diff --git a/mainnet/2026-02-19-superchain-separation/.env b/mainnet/2026-02-19-superchain-separation/.env
new file mode 100644
index 00000000..d2640b69
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/.env
@@ -0,0 +1,130 @@
+# ==============================================================================
+# Environment Configuration
+# ==============================================================================
+# This file contains all environment variables required for the Superchain
+# separation contract deployment and upgrade scripts.
+# ==============================================================================
+
+# ==============================================================================
+# DEPENDENCY VERSIONS
+# ==============================================================================
+# Git commits for library dependencies checked out during `make deps`
+
+# Optimism monorepo commit hash (ethereum-optimism/optimism)
+# Used for: SystemConfig, SuperchainConfig, and other OP Stack contracts
+OP_COMMIT=018f5ae926ec3277746b56a1c4ddb715c568603d
+
+# Base contracts repository commit hash (base/contracts)
+# Used for: MultisigScript and other base-specific utilities
+BASE_CONTRACTS_COMMIT=be7c7a642e430fa64b04b63203839f8c81f48466
+
+# ==============================================================================
+# SAFE ADDRESSES - L1 (Ethereum)
+# ==============================================================================
+# Gnosis Safe multisig addresses on L1 for governance and operations
+
+# Main owner Safe that controls the ProxyAdmin
+# Used by: DeploySuperchainConfigAndSystemConfig, UpdateProxyAdminOwnerSigners, UpgradeSystemConfig
+OWNER_SAFE=0x7bB41C3008B3f03FE483B28b8DB90e19Cf07595c
+
+# Coinbase signer Safe (will have EOA signers after UpdateCBSafeSigners)
+# Used by: UpdateCBSafeSigners (as the target Safe being updated)
+CB_SIGNER_SAFE_ADDR=0x9855054731540A48b28990B63DcF4f33d8AE46A1
+
+# Coinbase nested Safe (contains EOAs that will become direct signers)
+# Used by: UpdateCBSafeSigners, UpgradeFeeDisburser
+CB_NESTED_SAFE_ADDR=0x9C4a57Feb77e294Fd7BF5EBE9AB01CAA0a90A110
+
+# Coinbase Security Council Safe
+# Used by: UpdateCBSafeSigners, UpdateProxyAdminOwnerSigners, AddSecurityCouncilSigner
+CB_SC_SAFE_ADDR=0x20AcF55A3DCfe07fC4cecaCFa1628F788EC8A4Dd
+
+# New Security Council signer to be added
+# Used by: AddSecurityCouncilSigner
+NEW_SC_SIGNER_ADDR=
+
+# Optimism Foundation signer Safe (mainnet only - to be replaced by SC)
+# Used by: UpdateProxyAdminOwnerSigners
+OP_SIGNER_SAFE_ADDR=0x9BA6e03D8B90dE867373Db8cF1A58d2F7F006b3A
+
+# Incident response multisig (guardian for SuperchainConfig)
+# Used by: DeploySuperchainConfigAndSystemConfig
+INCIDENT_MULTISIG=0x14536667Cd30e52C0b458BaACcB9faDA7046E056
+
+# ==============================================================================
+# SAFE ADDRESSES - OP Mainnet (for SmartEscrow operations)
+# ==============================================================================
+# Gnosis Safe addresses on OP Mainnet for SmartEscrow termination/withdrawal
+# Note: These are only needed for mainnet SmartEscrow operations
+
+# Safe with TERMINATOR_ROLE on SmartEscrow contract
+# Used by: TerminateSmartEscrow
+CB_SAFE_ON_OP=0x6e1DFd5C1E22A4677663A81D24C6BA03561ef0f6
+
+# Required signer for approving the SmartEscrow withdrawal
+# Used by: WithdrawSmartEscrow
+OP_SAFE_ON_OP=0x2501c477D0A35545a387Aa4A3EEe4292A9a8B3F0
+
+# Safe with DEFAULT_ADMIN_ROLE on SmartEscrow contract
+# Used by: WithdrawSmartEscrow
+OWNER_SAFE_ON_OP=0x0a7361e734cf3f0394B0FC4a45C74E7a4Ec70940
+
+# ==============================================================================
+# DeployFeeDisburser.s.sol
+# ==============================================================================
+# Configuration for deploying the FeeDisburser contract on L2
+
+# L1 address that receives bridged fees from L2 FeeVaults
+# This is typically the BalanceTracker contract address
+BALANCE_TRACKER=0x23B597f33f6f2621F77DA117523Dffd634cDf4ea
+
+# Minimum time in seconds between fee disbursements (must be >= 86400 / 24 hours)
+FEE_DISBURSEMENT_INTERVAL=86400
+
+# ==============================================================================
+# UpgradeSystemConfig.s.sol
+# ==============================================================================
+# Configuration for upgrading the SystemConfig proxy
+
+# ProxyAdmin contract that manages the SystemConfig proxy
+PROXY_ADMIN=0x0475cBCAebd9CE8AfA5025828d5b98DFb67E059E
+
+# Current SystemConfig proxy address to be upgraded
+SYSTEM_CONFIG=0x73a79Fab69143498Ed3712e519A88a918e1f4072
+
+# New SystemConfig implementation address (deployed by DeploySuperchainConfigAndSystemConfig)
+SYSTEM_CONFIG_IMPLEMENTATION=
+
+# New SuperchainConfig proxy address (deployed by DeploySuperchainConfigAndSystemConfig)
+# This replaces the OP Superchain's SuperchainConfig with Base's own
+NEW_SUPERCHAIN_CONFIG=
+
+# ==============================================================================
+# UpgradeFeeDisburser.s.sol
+# ==============================================================================
+# Configuration for upgrading the FeeDisburser proxy on L2 via deposit transaction
+
+# OptimismPortal2 contract address on L1
+OPTIMISM_PORTAL_ADDR=0x49048044D57e1C92A77f79988d21Fa8fAF74E97e
+
+# FeeDisburser proxy contract address on L2
+FEE_DISBURSER_ADDR=0x09C7bAD99688a55a2e83644BFAed09e62bDcCcBA
+
+# New FeeDisburser implementation address on L2
+FEE_DISBURSER_IMPL_ADDR=
+
+# ==============================================================================
+# TerminateSmartEscrow.s.sol / WithdrawSmartEscrow.s.sol (Mainnet only)
+# ==============================================================================
+# Configuration for SmartEscrow termination and withdrawal on OP Mainnet
+
+# SmartEscrow contract address on OP Mainnet
+SMART_ESCROW=0xb3C2f9fC2727078EC3A2255410e83BA5B62c5B5f
+
+# ==============================================================================
+# MULTISIG OPERATIONS (runtime variables)
+# ==============================================================================
+# These variables are typically passed at runtime during signing/approval
+
+# Required for the task signer tool to work properly
+RECORD_STATE_DIFF=true
\ No newline at end of file
diff --git a/mainnet/2026-02-19-superchain-separation/FACILITATORS.md b/mainnet/2026-02-19-superchain-separation/FACILITATORS.md
new file mode 100644
index 00000000..9a2cf76d
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/FACILITATORS.md
@@ -0,0 +1,228 @@
+# Facilitator Instructions
+
+This document describes how to execute the Superchain separation mainnet transactions after collecting signatures.
+
+## Prerequisites
+
+### 1. Update repo and install dependencies
+
+```bash
+cd contract-deployments
+git pull
+cd mainnet/2026-02-19-superchain-separation
+make deps
+```
+
+## General Procedure
+
+1. Collect outputs from all participating signers.
+2. Concatenate all signatures and export as the `SIGNATURES` environment variable:
+   `export SIGNATURES="[SIGNATURE1][SIGNATURE2]..."`
+3. Run the appropriate `make approve-*` command(s) for each nested Safe.
+4. Run the appropriate `make execute-*` command to execute the transaction.
+
+## Important: Execution Order
+
+**Transactions MUST be executed in order** due to nonce dependencies:
+
+1. CB Nested Safe: Approve UpdateProxyAdminOwnerSigners
+
+```bash
+make approve-proxyadminowner-signers-cb
+```
+
+2. SC Safe: Approve UpdateProxyAdminOwnerSigners
+
+```bash
+make approve-proxyadminowner-signers-sc
+```
+
+3. CB Parent Safe: Approve UpdateProxyAdminOwnerSigners
+
+```bash
+make approve-proxyadminowner-signers-cb-coord
+```
+
+4. OP Safe: Approve UpdateProxyAdminOwnerSigners
+
+```bash
+make approve-proxyadminowner-signers-op
+```
+
+5. ProxyAdminOwner: Execute UpdateProxyAdminOwnerSigners
+
+```bash
+make execute-proxyadminownersigners
+```
+
+6. CB Nested Safe: Approve CBSafeSigners
+
+```bash
+make approve-cbsafesigners-cb
+```
+
+7. SC Safe: Approve CBSafeSigners
+
+```bash
+make approve-cbsafesigners-sc
+```
+
+8. CB Parent Safe: Execute CBSafeSigners
+
+```bash
+make execute-cbsafesigners
+```
+
+9. CB Parent Safe: Approve UpgradeSystemConfig
+
+```bash
+make approve-systemconfig-cb
+```
+
+10. SC Safe: Approve UpgradeSystemConfig
+
+```bash
+make approve-systemconfig-sc
+```
+
+11. ProxyAdminOwner: Execute UpgradeSystemConfig
+
+```bash
+make execute-systemconfig
+```
+
+12. CB Nested Safe: Execute UpgradeFeeDisburser
+
+```bash
+make execute-feedisburser
+```
+
+13. OP CB Safe: Execute TerminateSmartEscrow
+
+```bash
+make execute-terminate-smartescrow
+```
+
+14. OP CB Safe: Approve WithdrawSmartEscrow
+
+```bash
+make approve-withdraw-smartescrow-cb
+```
+
+15. OP OP Safe: Approve WithdrawSmartEscrow
+
+```bash
+make approve-withdraw-smartescrow-op
+```
+
+16. OP Parent Safe: Execute WithdrawSmartEscrow
+
+```bash
+make execute-withdraw-smartescrow
+```
+
+17. SC Safe: Execute AddSecurityCouncilSigner
+
+```bash
+make execute-add-signer
+```
+
+### Example Signature Output
+
+If the quorum is 3 and you receive the following outputs:
+
+```shell
+Data:  0xDEADBEEF
+Signer: 0xC0FFEE01
+Signature: AAAA
+```
+
+```shell
+Data:  0xDEADBEEF
+Signer: 0xC0FFEE02
+Signature: BBBB
+```
+
+```shell
+Data:  0xDEADBEEF
+Signer: 0xC0FFEE03
+Signature: CCCC
+```
+
+Concatenate: `SIGNATURES=AAAABBBBCCCC`
+
+---
+
+## Part 1: UpdateCBSafeSigners (CB + SC)
+
+Updates the signers on the Coinbase Safe.
+
+### Approve
+
+Coinbase facilitator (with CB signer signatures):
+
+```bash
+SIGNATURES=<CB_SIGNATURES> make approve-cbsafesigners-cb
+```
+
+Coinbase facilitator (with SC signer signatures):
+
+```bash
+SIGNATURES=<SC_SIGNATURES> make approve-cbsafesigners-sc
+```
+
+### Execute
+
+Once all approvals are submitted:
+
+```bash
+make execute-cbsafesigners
+```
+
+---
+
+## Part 2: UpgradeSystemConfig (CB + SC)
+
+Upgrades the SystemConfig contract with the new SuperchainConfig.
+
+### Approve
+
+Coinbase facilitator (with CB signer signatures):
+
+```bash
+SIGNATURES=<CB_SIGNATURES> make approve-systemconfig-cb
+```
+
+Coinbase facilitator (with SC signer signatures):
+
+```bash
+SIGNATURES=<SC_SIGNATURES> make approve-systemconfig-sc
+```
+
+### Execute
+
+Once all approvals are submitted:
+
+```bash
+make execute-systemconfig
+```
+
+---
+
+## Part 3: UpgradeFeeDisburser (CB only)
+
+Upgrades the FeeDisburser contract via a deposit transaction on L1.
+
+> **Note:** This must be executed AFTER Part 1 (execute-cbsafesigners) due to nonce dependencies on `CB_NESTED_SAFE_ADDR`.
+
+### Approve (if using nested safe)
+
+```bash
+SIGNATURES=<CB_SIGNATURES> make approve-feedisburser
+```
+
+### Execute
+
+```bash
+SIGNATURES=<CB_SIGNATURES> make execute-feedisburser
+```
diff --git a/mainnet/2026-02-19-superchain-separation/Makefile b/mainnet/2026-02-19-superchain-separation/Makefile
new file mode 100644
index 00000000..0677d94c
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/Makefile
@@ -0,0 +1,243 @@
+include ../../Makefile
+include ../../Multisig.mk
+
+include ../.env
+include .env
+
+##
+# Configuration
+##
+ifndef LEDGER_ACCOUNT
+override LEDGER_ACCOUNT = 0
+endif
+
+OP_RPC_URL = https://mainnet.optimism.io
+RPC_URL = $(L1_RPC_URL)
+
+# Comma variable for use in $(call ...) arguments
+COMMA := ,
+
+# Patch file for SystemConfig to use init version 4
+OP_CONTRACT_PATCH ?= patch/init-version.patch
+
+# Sender addresses for validation generation
+CB_NESTED_SENDER   := 0x6CD3850756b7894774Ab715D136F9dD02837De50
+CB_SIGNER_SENDER   := 0x9C4a57Feb77e294Fd7BF5EBE9AB01CAA0a90A110
+SC_SENDER          := 0x5ff5C78ff194acc24C22DAaDdE4D639ebF18ACC6
+OP_MAINNET_SENDER  := 0x42d27eEA1AD6e22Af6284F609847CB3Cd56B9c64
+OP_OP_SENDER       := 0x4d494C5F61b60752D3A10062276a0eFC22596151
+
+##
+# Phony Targets
+##
+.PHONY: deps-signer-tool \
+        gen-all-validations \
+        gen-validation-cb-1 gen-validation-cb-sc-1 gen-validation-op-1 \
+        gen-validation-cb-2 gen-validation-cb-sc-2 gen-validation-op-2 \
+        gen-validation-cb-3 gen-validation-cb-sc-3 \
+        gen-validation-cb-4 gen-validation-cb-sc-4 \
+		gen-validation-cb-5 gen-validation-cb-6 \
+        deploy-fee-disburser deploy-l1-contracts \
+		approve-proxyadminowner-signers-cb approve-proxyadminowner-signers-sc approve-proxyadminowner-signers-op \
+        approve-cbsafesigners-cb approve-cbsafesigners-sc \
+        approve-systemconfig-cb approve-systemconfig-sc \
+		approve-withdraw-smartescrow-cb approve-withdraw-smartescrow-op \
+		execute-proxyadminownersigners execute-cbsafesigners execute-systemconfig \
+        execute-feedisburser execute-terminate-smartescrow execute-withdraw-smartescrow \
+		execute-add-signer
+
+##
+# Signer Tool Setup
+##
+deps-signer-tool: checkout-signer-tool
+	cd $(SIGNER_TOOL_PATH) && npm ci
+
+##
+# Validation File Generation
+##
+# Generates validation files for multisig signing
+# Usage: GEN_VALIDATION(script_name, safe_addr, sender, output_file, env_vars)
+# Note: env_vars (5th param) is optional, used for nonce overrides when pre-signing multiple txs
+define GEN_VALIDATION
+	cd $(SIGNER_TOOL_PATH) && \
+		bun run scripts/genValidationFile.ts \
+			--rpc-url $(RPC_URL) \
+			--workdir .. \
+			--forge-cmd '$(5)forge script --rpc-url $(RPC_URL) $(1) --sig "sign(address[])" "[$(2)]" --sender $(3)' \
+			--ledger-id $(LEDGER_ACCOUNT) \
+			--out ../validations/$(4)
+endef
+
+# Helper to get current nonce for a safe
+# Usage: $(call GET_NONCE,safe_address)
+define GET_NONCE
+$(shell cast call $(1) "nonce()" --rpc-url $(RPC_URL) | cast to-dec)
+endef
+
+# Helper to convert address to uppercase for SAFE_NONCE env var
+# Usage: $(call ADDR_UPPER,safe_address)
+define ADDR_UPPER
+$(shell echo $(1) | tr '[:lower:]' '[:upper:]')
+endef
+
+# Part 1: UpdateProxyAdminOwnerSigners
+gen-validation-cb-1: deps-signer-tool
+	$(call GEN_VALIDATION,UpdateProxyAdminOwnerSigners,$(CB_NESTED_SAFE_ADDR)$(COMMA)$(CB_SIGNER_SAFE_ADDR),$(CB_NESTED_SENDER),coinbase-signer-part-1.json,)
+
+gen-validation-cb-sc-1: deps-signer-tool
+	$(call GEN_VALIDATION,UpdateProxyAdminOwnerSigners,$(CB_SC_SAFE_ADDR)$(COMMA)$(CB_SIGNER_SAFE_ADDR),$(SC_SENDER),security-council-signer-part-1.json,)
+
+gen-validation-op-1: deps-signer-tool
+	$(call GEN_VALIDATION,UpdateProxyAdminOwnerSigners,$(OP_SIGNER_SAFE_ADDR),$(OP_MAINNET_SENDER),optimism-signer.json,)
+
+# Part 2: UpdateCBSafeSigners
+# Task uses CB_SIGNER_SAFE_ADDR which will approve part 1 - needs nonce+1
+gen-validation-cb-2: deps-signer-tool
+	$(eval CB_PARENT_NONCE := $(shell expr $(call GET_NONCE,$(CB_SIGNER_SAFE_ADDR)) + 1))
+	$(eval CB_SIGNER_NONCE := $(shell expr $(call GET_NONCE,$(CB_NESTED_SAFE_ADDR)) + 1))
+	$(call GEN_VALIDATION,UpdateCBSafeSigners,$(CB_NESTED_SAFE_ADDR),$(CB_NESTED_SENDER),coinbase-signer-part-2.json,SAFE_NONCE_$(call ADDR_UPPER,$(CB_NESTED_SAFE_ADDR))=$(CB_SIGNER_NONCE) SAFE_NONCE_$(call ADDR_UPPER,$(CB_SIGNER_SAFE_ADDR))=$(CB_PARENT_NONCE) )
+
+# SC uses CB_SC_SAFE_ADDR which will approve part 1 - needs nonce+1
+gen-validation-cb-sc-2: deps-signer-tool
+	$(eval CB_PARENT_NONCE := $(shell expr $(call GET_NONCE,$(CB_SIGNER_SAFE_ADDR)) + 1))
+	$(eval SC_SIGNER_NONCE := $(shell expr $(call GET_NONCE,$(CB_SC_SAFE_ADDR)) + 1))
+	$(call GEN_VALIDATION,UpdateCBSafeSigners,$(CB_SC_SAFE_ADDR),$(SC_SENDER),security-council-signer-part-2.json,SAFE_NONCE_$(call ADDR_UPPER,$(CB_SC_SAFE_ADDR))=$(SC_SIGNER_NONCE) SAFE_NONCE_$(call ADDR_UPPER,$(CB_SIGNER_SAFE_ADDR))=$(CB_PARENT_NONCE) )
+
+# Part 3: UpgradeSystemConfig
+# ProxyAdminOwner will execute part 1 - needs nonce+1
+# CB uses CB_SIGNER_SAFE_ADDR which will approve part 1 and execute part 2 - needs nonce+2
+gen-validation-cb-3: deps-signer-tool
+	$(eval PROXY_ADMIN_OWNER_NONCE := $(shell expr $(call GET_NONCE,$(OWNER_SAFE)) + 1))
+	$(eval CB_PARENT_NONCE := $(shell expr $(call GET_NONCE,$(CB_SIGNER_SAFE_ADDR)) + 2))
+	$(call GEN_VALIDATION,UpgradeSystemConfig,$(CB_SIGNER_SAFE_ADDR),$(CB_SIGNER_SENDER),coinbase-signer-part-3.json,SAFE_NONCE_$(call ADDR_UPPER,$(CB_SIGNER_SAFE_ADDR))=$(CB_PARENT_NONCE) SAFE_NONCE_$(call ADDR_UPPER,$(OWNER_SAFE))=$(PROXY_ADMIN_OWNER_NONCE) )
+
+# SC uses CB_SC_SAFE_ADDR which has Part 1 and 2 txs pending - needs nonce+2
+gen-validation-cb-sc-3: deps-signer-tool
+	$(eval PROXY_ADMIN_OWNER_NONCE := $(shell expr $(call GET_NONCE,$(OWNER_SAFE)) + 1))
+	$(eval SC_NONCE := $(shell expr $(call GET_NONCE,$(CB_SC_SAFE_ADDR)) + 2))
+	$(call GEN_VALIDATION,UpgradeSystemConfig,$(CB_SC_SAFE_ADDR),$(SC_SENDER),security-council-signer-part-3.json,SAFE_NONCE_$(call ADDR_UPPER,$(CB_SC_SAFE_ADDR))=$(SC_NONCE) SAFE_NONCE_$(call ADDR_UPPER,$(OWNER_SAFE))=$(PROXY_ADMIN_OWNER_NONCE) )
+
+# Part 4: UpgradeFeeDisburser
+# Uses CB_NESTED_SAFE_ADDR which has Part 1 and 2 txs pending - needs nonce+2
+gen-validation-cb-4: deps-signer-tool
+	$(eval CB_NESTED_NONCE := $(shell expr $(call GET_NONCE,$(CB_NESTED_SAFE_ADDR)) + 2))
+	$(call GEN_VALIDATION,UpgradeFeeDisburser,,$(CB_NESTED_SENDER),coinbase-signer-part-4.json,SAFE_NONCE_$(call ADDR_UPPER,$(CB_NESTED_SAFE_ADDR))=$(CB_NESTED_NONCE) )
+
+# Part 5: TerminateSmartEscrow
+gen-validation-cb-5: RPC_URL = $(OP_RPC_URL)
+gen-validation-cb-5: deps-signer-tool
+	$(call GEN_VALIDATION,TerminateSmartEscrow,,$(CB_NESTED_SENDER),coinbase-signer-part-5.json,)
+
+# Part 6: WithdrawSmartEscrow
+# Uses CB_SAFE_ON_OP which executes part 5 - needs nonce+1
+gen-validation-cb-6: RPC_URL = $(OP_RPC_URL)
+gen-validation-cb-6: deps-signer-tool
+	$(eval CB_NONCE := $(shell expr $(call GET_NONCE,$(CB_SAFE_ON_OP)) + 1))
+	$(call GEN_VALIDATION,WithdrawSmartEscrow,$(CB_SAFE_ON_OP),$(CB_NESTED_SENDER),coinbase-signer-part-6.json,SAFE_NONCE_$(call ADDR_UPPER,$(CB_SAFE_ON_OP))=$(CB_NONCE) )
+
+gen-validation-op-2: RPC_URL = $(OP_RPC_URL)
+gen-validation-op-2: deps-signer-tool
+	$(call GEN_VALIDATION,WithdrawSmartEscrow,$(OP_SAFE_ON_OP),$(OP_OP_SENDER),optimism-op-mainnet-signer.json,)
+
+# Part 7: AddSecurityCouncilSigner
+# Uses CB_SIGNER_SAFE_ADDR which will approve part 1, 2 and 3 - needs nonce+3
+gen-validation-cb-sc-4: deps-signer-tool
+	$(eval SC_NONCE := $(shell expr $(call GET_NONCE,$(CB_SC_SAFE_ADDR)) + 3))
+	$(call GEN_VALIDATION,AddSecurityCouncilSigner,,$(SC_SENDER),security-council-signer-part-4.json,SAFE_NONCE_$(call ADDR_UPPER,$(CB_SC_SAFE_ADDR))=$(SC_NONCE) )
+
+##
+# Deployments
+##
+deploy-fee-disburser:
+ifndef VERIFIER_API_KEY
+	$(error VERIFIER_API_KEY is not set)
+endif
+	forge script script/DeployFeeDisburser.s.sol:DeployFeeDisburser \
+		--rpc-url $(L2_RPC_URL) \
+		--broadcast \
+		--verify \
+		--verifier-api-key $(VERIFIER_API_KEY) \
+		--ledger --hd-paths $(LEDGER_HD_PATH) \
+		-vvvv
+
+deploy-l1-contracts:
+ifndef VERIFIER_API_KEY
+	$(error VERIFIER_API_KEY is not set)
+endif
+	forge script script/DeploySuperchainConfigAndSystemConfig.s.sol:DeploySuperchainConfigAndSystemConfig \
+		--rpc-url $(L1_RPC_URL) \
+		--broadcast \
+		--verify \
+		--verifier-api-key $(VERIFIER_API_KEY) \
+		--ledger --hd-paths $(LEDGER_HD_PATH) \
+		-vvvv
+
+##
+# Approvals - UpdateProxyAdminOwnerSigners
+##
+approve-proxyadminowner-signers-cb:
+	SCRIPT_NAME=UpdateProxyAdminOwnerSigners $(call MULTISIG_APPROVE,$(CB_NESTED_SAFE_ADDR) $(CB_SIGNER_SAFE_ADDR),$(SIGNATURES))
+
+approve-proxyadminowner-signers-sc:
+	SCRIPT_NAME=UpdateProxyAdminOwnerSigners $(call MULTISIG_APPROVE,$(CB_SC_SAFE_ADDR) $(CB_SIGNER_SAFE_ADDR),$(SIGNATURES))
+
+approve-proxyadminowner-signers-op:
+	SCRIPT_NAME=UpdateProxyAdminOwnerSigners $(call MULTISIG_APPROVE,$(OP_SIGNER_SAFE_ADDR),$(SIGNATURES))
+
+approve-proxyadminowner-signers-cb-coord:
+	SCRIPT_NAME=UpdateProxyAdminOwnerSigners $(call MULTISIG_APPROVE,$(CB_SIGNER_SAFE_ADDR),0x)
+
+##
+# Approvals - UpdateCBSafeSigners
+##
+approve-cbsafesigners-cb:
+	SCRIPT_NAME=UpdateCBSafeSigners $(call MULTISIG_APPROVE,$(CB_NESTED_SAFE_ADDR),$(SIGNATURES))
+
+approve-cbsafesigners-sc:
+	SCRIPT_NAME=UpdateCBSafeSigners $(call MULTISIG_APPROVE,$(CB_SC_SAFE_ADDR),$(SIGNATURES))
+
+##
+# Approvals - UpgradeSystemConfig
+##
+approve-systemconfig-cb:
+	SCRIPT_NAME=UpgradeSystemConfig $(call MULTISIG_APPROVE,$(CB_SIGNER_SAFE_ADDR),$(SIGNATURES))
+
+approve-systemconfig-sc:
+	SCRIPT_NAME=UpgradeSystemConfig $(call MULTISIG_APPROVE,$(CB_SC_SAFE_ADDR),$(SIGNATURES))
+
+##
+# Approvals - WithdrawSmartEscrow
+##
+approve-withdraw-smartescrow-cb: RPC_URL = $(OP_RPC_URL)
+approve-withdraw-smartescrow-cb:
+	SCRIPT_NAME=WithdrawSmartEscrow $(call MULTISIG_APPROVE,$(CB_SAFE_ON_OP),$(SIGNATURES))
+
+approve-withdraw-smartescrow-op: RPC_URL = $(OP_RPC_URL)
+approve-withdraw-smartescrow-op:
+	SCRIPT_NAME=WithdrawSmartEscrow $(call MULTISIG_APPROVE,$(OP_SAFE_ON_OP),$(SIGNATURES))
+
+##
+# Execute
+##
+execute-proxyadminownersigners:
+	SCRIPT_NAME=UpdateProxyAdminOwnerSigners $(call MULTISIG_EXECUTE,0x)
+
+execute-cbsafesigners:
+	SCRIPT_NAME=UpdateCBSafeSigners $(call MULTISIG_EXECUTE,0x)
+
+execute-systemconfig:
+	SCRIPT_NAME=UpgradeSystemConfig $(call MULTISIG_EXECUTE,0x)
+
+execute-feedisburser:
+	SCRIPT_NAME=UpgradeFeeDisburser $(call MULTISIG_EXECUTE,$(SIGNATURES))
+
+execute-terminate-smartescrow: RPC_URL = $(OP_RPC_URL)
+execute-terminate-smartescrow:
+	SCRIPT_NAME=TerminateSmartEscrow $(call MULTISIG_EXECUTE,$(SIGNATURES))
+
+execute-withdraw-smartescrow: RPC_URL = $(OP_RPC_URL)
+execute-withdraw-smartescrow:
+	SCRIPT_NAME=WithdrawSmartEscrow $(call MULTISIG_EXECUTE,0x)
+
+execute-add-signer:
+	SCRIPT_NAME=AddSecurityCouncilSigner $(call MULTISIG_EXECUTE,$(SIGNATURES))
diff --git a/mainnet/2026-02-19-superchain-separation/README.md b/mainnet/2026-02-19-superchain-separation/README.md
new file mode 100644
index 00000000..c98483c9
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/README.md
@@ -0,0 +1,57 @@
+# Mainnet OP Stack Separation
+
+Status: READY TO SIGN
+
+## Description
+
+This task executes our migration away from the shared Superchain configuration to a Base-owned configuration.
+
+## Procedure
+
+### Install dependencies
+
+#### 1. Update foundry
+
+```bash
+foundryup
+```
+
+#### 2. Install Node.js if needed
+
+First, check if you have node installed:
+
+```bash
+node --version
+```
+
+If you see a version output from the above command, you can move on. Otherwise, install node:
+
+```bash
+brew install node
+```
+
+### Approve the transaction
+
+#### 1. Update repo
+
+```bash
+cd contract-deployments
+git pull
+```
+
+#### 2. Run the signing tool
+
+```bash
+make sign-task
+```
+
+#### 3. Open the UI at [http://localhost:3000](http://localhost:3000)
+
+- Select the correct signer role from the list of available users to sign.
+- After completion, close the signer tool with `Ctrl + C`.
+
+#### 4. Send signature to facilitator
+
+Copy the signature output and send it to the designated facilitator via the agreed communication channel. The facilitator will collect all signatures and execute the transaction.
+
+For facilitator instructions, see [FACILITATORS.md](./FACILITATORS.md).
diff --git a/mainnet/2026-02-19-superchain-separation/foundry.toml b/mainnet/2026-02-19-superchain-separation/foundry.toml
new file mode 100644
index 00000000..7245813a
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/foundry.toml
@@ -0,0 +1,23 @@
+[profile.default]
+src = 'src'
+out = 'out'
+libs = ['lib']
+broadcast = 'records'
+fs_permissions = [{ access = "read-write", path = "./" }]
+optimizer = true
+optimizer_runs = 999999
+via-ir = true
+remappings = [
+    '@eth-optimism-bedrock/=lib/optimism/packages/contracts-bedrock/',
+    '@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts',
+    '@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts',
+    '@rari-capital/solmate/=lib/solmate/',
+    '@base-contracts/=lib/base-contracts',
+    'solady/=lib/solady/src/',
+    '@lib-keccak/=lib/lib-keccak/contracts/lib',
+]
+
+[lint]
+lint_on_build = false
+
+# See more config options https://github.com/foundry-rs/foundry/tree/master/config
diff --git a/mainnet/2026-02-19-superchain-separation/script/AddSecurityCouncilSigner.s.sol b/mainnet/2026-02-19-superchain-separation/script/AddSecurityCouncilSigner.s.sol
new file mode 100644
index 00000000..e293e3b4
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/AddSecurityCouncilSigner.s.sol
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {Vm} from "forge-std/Vm.sol";
+
+import {MultisigScript} from "@base-contracts/script/universal/MultisigScript.sol";
+import {Simulation} from "@base-contracts/script/universal/Simulation.sol";
+import {IGnosisSafe, Enum} from "@base-contracts/script/universal/IGnosisSafe.sol";
+
+/// @title AddSecurityCouncilSigner
+/// @notice Adds a new signer to the Security Council Safe and increases the threshold to 3.
+/// @dev Uses addOwnerWithThreshold to add the new signer and set the threshold in a single call.
+contract AddSecurityCouncilSigner is MultisigScript {
+    /// @notice The new threshold after adding the signer.
+    uint256 public constant NEW_THRESHOLD = 8;
+
+    /// @notice The Security Council Safe whose signers are being updated.
+    address public immutable SECURITY_COUNCIL = vm.envAddress("CB_SC_SAFE_ADDR");
+
+    /// @notice The new signer address to be added.
+    address public immutable NEW_SIGNER = vm.envAddress("NEW_SC_SIGNER_ADDR");
+
+    /// @notice The current threshold before the update.
+    uint256 public currentThreshold;
+
+    /// @notice The current number of owners before the update.
+    uint256 public currentOwnerCount;
+
+    function setUp() external {
+        // Prechecks: Verify initial state
+        require(!IGnosisSafe(SECURITY_COUNCIL).isOwner(NEW_SIGNER), "Precheck: NEW_SIGNER must not already be an owner");
+
+        currentThreshold = IGnosisSafe(SECURITY_COUNCIL).getThreshold();
+        currentOwnerCount = IGnosisSafe(SECURITY_COUNCIL).getOwners().length;
+
+        require(currentThreshold < NEW_THRESHOLD, "Precheck: Current threshold must be less than NEW_THRESHOLD");
+        require(currentOwnerCount + 1 >= NEW_THRESHOLD, "Precheck: Owner count after adding must be >= NEW_THRESHOLD");
+    }
+
+    function _postCheck(Vm.AccountAccess[] memory, Simulation.Payload memory) internal view override {
+        // Verify new signer was added
+        require(IGnosisSafe(SECURITY_COUNCIL).isOwner(NEW_SIGNER), "Postcheck: NEW_SIGNER must be an owner");
+
+        // Verify threshold was updated
+        require(
+            IGnosisSafe(SECURITY_COUNCIL).getThreshold() == NEW_THRESHOLD, "Postcheck: Threshold must be NEW_THRESHOLD"
+        );
+
+        // Verify owner count increased by 1
+        require(
+            IGnosisSafe(SECURITY_COUNCIL).getOwners().length == currentOwnerCount + 1,
+            "Postcheck: Owner count must increase by 1"
+        );
+    }
+
+    function _buildCalls() internal view override returns (MultisigScript.Call[] memory) {
+        MultisigScript.Call[] memory calls = new MultisigScript.Call[](1);
+
+        // Add new signer and set threshold to NEW_THRESHOLD in a single call
+        calls[0] = MultisigScript.Call({
+            operation: Enum.Operation.Call,
+            target: SECURITY_COUNCIL,
+            data: abi.encodeCall(IGnosisSafe.addOwnerWithThreshold, (NEW_SIGNER, NEW_THRESHOLD)),
+            value: 0
+        });
+
+        return calls;
+    }
+
+    function _ownerSafe() internal view override returns (address) {
+        return SECURITY_COUNCIL;
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/script/DeployFeeDisburser.s.sol b/mainnet/2026-02-19-superchain-separation/script/DeployFeeDisburser.s.sol
new file mode 100644
index 00000000..9fef1e31
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/DeployFeeDisburser.s.sol
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.25;
+
+import {Script} from "forge-std/Script.sol";
+import {console} from "forge-std/console.sol";
+
+import {FeeDisburser} from "@base-contracts/src/revenue-share/FeeDisburser.sol";
+
+/// @title DeployFeeDisburser
+/// @notice Deploys the FeeDisburser contract which collects fees from L2 FeeVaults and bridges them to L1.
+/// @dev Required environment variables:
+///      - L1_WALLET: The L1 address that will receive bridged fees
+///      - FEE_DISBURSEMENT_INTERVAL: Minimum time in seconds between disbursements (must be >= 24 hours)
+contract DeployFeeDisburser is Script {
+    /// @notice The L1 address that will receive the bridged fees.
+    address public immutable L1_WALLET = vm.envAddress("BALANCE_TRACKER");
+
+    /// @notice The minimum time in seconds between fee disbursements.
+    uint256 public immutable FEE_DISBURSEMENT_INTERVAL = vm.envUint("FEE_DISBURSEMENT_INTERVAL");
+
+    function run() external {
+        vm.startBroadcast();
+
+        FeeDisburser feeDisburser = new FeeDisburser(L1_WALLET, FEE_DISBURSEMENT_INTERVAL);
+
+        console.log("FeeDisburser deployed at:", address(feeDisburser));
+        console.log("  L1_WALLET:", L1_WALLET);
+        console.log("  FEE_DISBURSEMENT_INTERVAL:", FEE_DISBURSEMENT_INTERVAL);
+
+        vm.stopBroadcast();
+
+        // Post-deployment checks to ensure immutables match expected values
+        // (guards against shell env variables overriding .env file)
+        require(
+            feeDisburser.L1_WALLET() == 0x23B597f33f6f2621F77DA117523Dffd634cDf4ea,
+            "DeployFeeDisburser: L1_WALLET mismatch"
+        );
+        require(
+            feeDisburser.FEE_DISBURSEMENT_INTERVAL() == 86400, "DeployFeeDisburser: FEE_DISBURSEMENT_INTERVAL mismatch"
+        );
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/script/DeploySuperchainConfigAndSystemConfig.s.sol b/mainnet/2026-02-19-superchain-separation/script/DeploySuperchainConfigAndSystemConfig.s.sol
new file mode 100644
index 00000000..4536925f
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/DeploySuperchainConfigAndSystemConfig.s.sol
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {Script} from "forge-std/Script.sol";
+
+import {Proxy} from "@base-contracts/src/universal/Proxy.sol";
+import {ProxyAdmin} from "@base-contracts/src/universal/ProxyAdmin.sol";
+import {SystemConfig} from "@base-contracts/src/L1/SystemConfig.sol";
+import {SuperchainConfig} from "@base-contracts/src/L1/SuperchainConfig.sol";
+
+/// @title DeploySuperchainConfigAndSystemConfig
+/// @notice Deploys a new SuperchainConfig proxy and a patched SystemConfig implementation.
+///         The SuperchainConfig proxy is initialized with the guardian address and admin
+///         is transferred to the ProxyAdmin contract. The SystemConfig implementation uses
+///         init version 4 to allow re-initialization on existing proxies.
+contract DeploySuperchainConfigAndSystemConfig is Script {
+    /// @notice The ProxyAdmin contract that will be the admin of the SuperchainConfig proxy.
+    address public immutable PROXY_ADMIN = vm.envAddress("PROXY_ADMIN");
+
+    /// @notice The Safe that owns the ProxyAdmin.
+    address public immutable OWNER_SAFE = vm.envAddress("OWNER_SAFE");
+
+    /// @notice The guardian address that can pause and perform dispute game operations.
+    address public immutable GUARDIAN = vm.envAddress("SECURITY_COUNCIL");
+
+    /// @notice The incident responder address that can only pause.
+    address public immutable INCIDENT_RESPONDER = vm.envAddress("INCIDENT_MULTISIG");
+
+    function run() external {
+        vm.startBroadcast();
+
+        // Deploy SuperchainConfig implementation with guardian and incident responder as constructor args
+        SuperchainConfig superchainConfigImpl = new SuperchainConfig(GUARDIAN, INCIDENT_RESPONDER);
+
+        // Deploy SuperchainConfig proxy
+        Proxy superchainConfigProxy = new Proxy(address(this));
+        superchainConfigProxy.upgradeTo(address(superchainConfigImpl));
+        superchainConfigProxy.changeAdmin(PROXY_ADMIN);
+
+        // Deploy patched SystemConfig implementation (uses init version 4)
+        new SystemConfig();
+
+        vm.stopBroadcast();
+
+        // Post-deployment verification
+        SuperchainConfig superchainConfig = SuperchainConfig(address(superchainConfigProxy));
+        require(superchainConfig.GUARDIAN() == GUARDIAN, "Postcheck: Guardian not set correctly");
+        require(
+            superchainConfig.INCIDENT_RESPONDER() == INCIDENT_RESPONDER,
+            "Postcheck: Incident responder not set correctly"
+        );
+        require(!superchainConfig.paused(), "Postcheck: SuperchainConfig should not be paused");
+
+        // Verify proxy admin is set correctly
+        vm.prank(address(0));
+        require(superchainConfigProxy.admin() == PROXY_ADMIN, "Postcheck: Proxy admin not set correctly");
+
+        // Verify proxy admin owner is correct
+        require(ProxyAdmin(PROXY_ADMIN).owner() == OWNER_SAFE, "Postcheck: ProxyAdmin owner not set correctly");
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/script/TerminateSmartEscrow.s.sol b/mainnet/2026-02-19-superchain-separation/script/TerminateSmartEscrow.s.sol
new file mode 100644
index 00000000..74c798d2
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/TerminateSmartEscrow.s.sol
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {Vm} from "forge-std/Vm.sol";
+
+import {MultisigScript, Enum} from "@base-contracts/script/universal/MultisigScript.sol";
+import {Simulation} from "@base-contracts/script/universal/Simulation.sol";
+
+interface ISmartEscrow {
+    function terminate() external;
+    function contractTerminated() external view returns (bool);
+}
+
+/// @title TerminateSmartEscrow
+/// @notice Script to terminate the SmartEscrow contract via a multisig transaction.
+///         The caller must have the TERMINATOR_ROLE on the SmartEscrow contract.
+///         Termination releases any vested tokens to the beneficiary before setting
+///         the contract to a terminated state.
+contract TerminateSmartEscrow is MultisigScript {
+    /// @notice The Safe address that has the TERMINATOR_ROLE on the SmartEscrow contract.
+    address public immutable OWNER_SAFE = vm.envAddress("CB_SAFE_ON_OP");
+
+    /// @notice The SmartEscrow contract address to terminate.
+    address public immutable SMART_ESCROW = vm.envAddress("SMART_ESCROW");
+
+    /// @notice Verifies that the SmartEscrow contract was successfully terminated.
+    function _postCheck(Vm.AccountAccess[] memory, Simulation.Payload memory) internal view override {
+        require(ISmartEscrow(SMART_ESCROW).contractTerminated(), "Postcheck: SmartEscrow contract was not terminated");
+    }
+
+    /// @notice Builds the call to SmartEscrow.terminate().
+    function _buildCalls() internal view override returns (MultisigScript.Call[] memory) {
+        MultisigScript.Call[] memory calls = new MultisigScript.Call[](1);
+
+        calls[0] = MultisigScript.Call({
+            operation: Enum.Operation.Call,
+            target: SMART_ESCROW,
+            data: abi.encodeCall(ISmartEscrow.terminate, ()),
+            value: 0
+        });
+
+        return calls;
+    }
+
+    /// @notice Returns the Safe address that will execute this transaction.
+    function _ownerSafe() internal view override returns (address) {
+        return OWNER_SAFE;
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/script/UpdateCBSafeSigners.s.sol b/mainnet/2026-02-19-superchain-separation/script/UpdateCBSafeSigners.s.sol
new file mode 100644
index 00000000..b45fd552
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/UpdateCBSafeSigners.s.sol
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {Vm} from "forge-std/Vm.sol";
+
+import {MultisigScript} from "@base-contracts/script/universal/MultisigScript.sol";
+import {Simulation} from "@base-contracts/script/universal/Simulation.sol";
+import {IGnosisSafe, Enum} from "@base-contracts/script/universal/IGnosisSafe.sol";
+
+/// @title UpdateCBSafeSigners
+/// @notice Updates the CB signer safe to replace nested safe signers with individual EOAs.
+/// @dev Execution order:
+///      1. Remove SECURITY_COUNCIL from OWNER_SAFE (threshold temporarily set to 1)
+///      2. Add each CB EOA from CB_NESTED_SAFE as direct signers (threshold stays at 1)
+///      3. Remove CB_NESTED_SAFE and set final threshold to FINAL_THRESHOLD
+contract UpdateCBSafeSigners is MultisigScript {
+    /// @notice Sentinel address used by Safe's linked list implementation.
+    address internal constant SENTINEL = address(0x1);
+
+    /// @notice Interim threshold used during owner modifications.
+    uint256 internal constant INTERIM_THRESHOLD = 1;
+
+    /// @notice Final threshold after all owner modifications are complete.
+    uint256 public constant FINAL_THRESHOLD = 3;
+
+    /// @notice The Safe whose signers are being updated.
+    address public immutable OWNER_SAFE = vm.envAddress("CB_SIGNER_SAFE_ADDR");
+
+    /// @notice The security council Safe to be removed as a signer.
+    address public immutable SECURITY_COUNCIL = vm.envAddress("CB_SC_SAFE_ADDR");
+
+    /// @notice The nested Safe whose EOA owners will become direct signers.
+    address public immutable CB_NESTED_SAFE = vm.envAddress("CB_NESTED_SAFE_ADDR");
+
+    /// @notice The previous owner in Safe's linked list, needed for removeOwner.
+    address public prevOwnerOfSecurityCouncil = SENTINEL;
+
+    /// @notice The EOA addresses from CB_NESTED_SAFE that will become direct signers.
+    address[] public cbEoas;
+
+    function setUp() external {
+        // Prechecks: Verify initial state
+        require(IGnosisSafe(OWNER_SAFE).isOwner(SECURITY_COUNCIL), "Precheck: SECURITY_COUNCIL must be an owner");
+        require(IGnosisSafe(OWNER_SAFE).isOwner(CB_NESTED_SAFE), "Precheck: CB_NESTED_SAFE must be an owner");
+
+        // Find prevOwner for SECURITY_COUNCIL in Safe's linked list.
+        // Safe's getOwners() returns owners in linked list order.
+        // The first owner has SENTINEL (0x1) as its prevOwner.
+        address[] memory owners = IGnosisSafe(OWNER_SAFE).getOwners();
+
+        for (uint256 i; i < owners.length; i++) {
+            if (owners[i] == SECURITY_COUNCIL) break;
+            prevOwnerOfSecurityCouncil = owners[i];
+        }
+
+        // Get EOAs from nested safe to add as direct signers
+        cbEoas = IGnosisSafe(CB_NESTED_SAFE).getOwners();
+        require(cbEoas.length > 0, "Precheck: CB_NESTED_SAFE must have at least one owner");
+        require(cbEoas.length >= FINAL_THRESHOLD, "Precheck: CB_NESTED_SAFE must have at least FINAL_THRESHOLD owners");
+    }
+
+    function _postCheck(Vm.AccountAccess[] memory, Simulation.Payload memory) internal view override {
+        // Verify removed signers
+        require(!IGnosisSafe(OWNER_SAFE).isOwner(SECURITY_COUNCIL), "Postcheck: SECURITY_COUNCIL must be removed");
+        require(!IGnosisSafe(OWNER_SAFE).isOwner(CB_NESTED_SAFE), "Postcheck: CB_NESTED_SAFE must be removed");
+
+        // Verify all EOAs are now direct signers
+        for (uint256 i = 0; i < cbEoas.length; i++) {
+            require(IGnosisSafe(OWNER_SAFE).isOwner(cbEoas[i]), "Postcheck: CB EOA must be an owner");
+        }
+
+        // Verify threshold
+        require(
+            IGnosisSafe(OWNER_SAFE).getThreshold() == FINAL_THRESHOLD, "Postcheck: Threshold must be FINAL_THRESHOLD"
+        );
+    }
+
+    function _buildCalls() internal view override returns (MultisigScript.Call[] memory) {
+        // Total calls: 1 (remove SECURITY_COUNCIL) + cbEoas.length (add EOAs) + 1 (remove CB_NESTED_SAFE)
+        MultisigScript.Call[] memory calls = new MultisigScript.Call[](2 + cbEoas.length);
+
+        // Step 1: Remove SECURITY_COUNCIL, set threshold to 1
+        calls[0] = MultisigScript.Call({
+            operation: Enum.Operation.Call,
+            target: OWNER_SAFE,
+            data: abi.encodeCall(
+                IGnosisSafe.removeOwner, (prevOwnerOfSecurityCouncil, SECURITY_COUNCIL, INTERIM_THRESHOLD)
+            ),
+            value: 0
+        });
+
+        // Step 2: Add each CB EOA as a direct signer (keep threshold at 1)
+        // Note: addOwnerWithThreshold adds new owners to the FRONT of Safe's linked list.
+        // After adding cbEoas[0..n-1], the order will be:
+        //   SENTINEL -> cbEoas[n-1] -> ... -> cbEoas[0] -> CB_NESTED_SAFE -> ...
+        // Therefore, cbEoas[0] will be the prevOwner of CB_NESTED_SAFE.
+        for (uint256 i = 0; i < cbEoas.length; i++) {
+            calls[i + 1] = MultisigScript.Call({
+                operation: Enum.Operation.Call,
+                target: OWNER_SAFE,
+                data: abi.encodeCall(IGnosisSafe.addOwnerWithThreshold, (cbEoas[i], INTERIM_THRESHOLD)),
+                value: 0
+            });
+        }
+
+        // Step 3: Remove CB_NESTED_SAFE and set final threshold
+        // cbEoas[0] is the prevOwner because it was added first and is now
+        // immediately before CB_NESTED_SAFE in the linked list.
+        calls[calls.length - 1] = MultisigScript.Call({
+            operation: Enum.Operation.Call,
+            target: OWNER_SAFE,
+            data: abi.encodeCall(IGnosisSafe.removeOwner, (cbEoas[0], CB_NESTED_SAFE, FINAL_THRESHOLD)),
+            value: 0
+        });
+
+        return calls;
+    }
+
+    function _ownerSafe() internal view override returns (address) {
+        return OWNER_SAFE;
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/script/UpdateProxyAdminOwnerSigners.s.sol b/mainnet/2026-02-19-superchain-separation/script/UpdateProxyAdminOwnerSigners.s.sol
new file mode 100644
index 00000000..d8f68bac
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/UpdateProxyAdminOwnerSigners.s.sol
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {Vm} from "forge-std/Vm.sol";
+
+import {MultisigScript} from "@base-contracts/script/universal/MultisigScript.sol";
+import {Simulation} from "@base-contracts/script/universal/Simulation.sol";
+import {IGnosisSafe, Enum} from "@base-contracts/script/universal/IGnosisSafe.sol";
+
+/// @title UpdateProxyAdminOwnerSigners
+/// @notice Swaps OP_SAFE for SECURITY_COUNCIL as an owner on the ProxyAdmin owner Safe.
+/// @dev This script expects the Safe to have exactly 2 owners and threshold of 2 before and after the swap.
+contract UpdateProxyAdminOwnerSigners is MultisigScript {
+    /// @notice Sentinel address used by Safe's linked list implementation.
+    address internal constant SENTINEL = address(0x1);
+
+    /// @notice Expected owner count before and after the swap.
+    uint256 internal constant EXPECTED_OWNER_COUNT = 2;
+
+    /// @notice The Safe whose signers are being updated.
+    address public immutable OWNER_SAFE = vm.envAddress("OWNER_SAFE");
+
+    /// @notice The OP signer Safe to be removed as an owner.
+    address public immutable OP_SAFE = vm.envAddress("OP_SIGNER_SAFE_ADDR");
+
+    /// @notice The security council Safe to be added as an owner.
+    address public immutable SECURITY_COUNCIL = vm.envAddress("CB_SC_SAFE_ADDR");
+
+    /// @notice The previous owner in Safe's linked list, needed for swapOwner.
+    address public prevOwner = SENTINEL;
+
+    function setUp() external {
+        // Prechecks: Verify initial state
+        require(IGnosisSafe(OWNER_SAFE).isOwner(OP_SAFE), "Precheck: OP_SAFE must be an owner");
+        require(
+            !IGnosisSafe(OWNER_SAFE).isOwner(SECURITY_COUNCIL),
+            "Precheck: SECURITY_COUNCIL must not already be an owner"
+        );
+        require(
+            IGnosisSafe(OWNER_SAFE).getOwners().length == EXPECTED_OWNER_COUNT,
+            "Precheck: Must have EXPECTED_OWNER_COUNT owners"
+        );
+
+        // Find prevOwner for OP_SAFE in Safe's linked list.
+        // Safe's getOwners() returns owners in linked list order.
+        // The first owner has SENTINEL (0x1) as its prevOwner.
+        address[] memory owners = IGnosisSafe(OWNER_SAFE).getOwners();
+
+        for (uint256 i; i < owners.length; i++) {
+            if (owners[i] == OP_SAFE) break;
+            prevOwner = owners[i];
+        }
+    }
+
+    function _postCheck(Vm.AccountAccess[] memory, Simulation.Payload memory) internal view override {
+        require(IGnosisSafe(OWNER_SAFE).isOwner(SECURITY_COUNCIL), "Postcheck: SECURITY_COUNCIL must be an owner");
+        require(!IGnosisSafe(OWNER_SAFE).isOwner(OP_SAFE), "Postcheck: OP_SAFE must be removed");
+        require(
+            IGnosisSafe(OWNER_SAFE).getOwners().length == EXPECTED_OWNER_COUNT,
+            "Postcheck: Must have EXPECTED_OWNER_COUNT owners"
+        );
+    }
+
+    function _buildCalls() internal view override returns (MultisigScript.Call[] memory) {
+        MultisigScript.Call[] memory calls = new MultisigScript.Call[](1);
+
+        calls[0] = MultisigScript.Call({
+            operation: Enum.Operation.Call,
+            target: OWNER_SAFE,
+            data: abi.encodeCall(IGnosisSafe.swapOwner, (prevOwner, OP_SAFE, SECURITY_COUNCIL)),
+            value: 0
+        });
+
+        return calls;
+    }
+
+    function _ownerSafe() internal view override returns (address) {
+        return OWNER_SAFE;
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/script/UpgradeFeeDisburser.s.sol b/mainnet/2026-02-19-superchain-separation/script/UpgradeFeeDisburser.s.sol
new file mode 100644
index 00000000..e089edb1
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/UpgradeFeeDisburser.s.sol
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {Vm} from "forge-std/Vm.sol";
+
+import {MultisigScript, Enum} from "@base-contracts/script/universal/MultisigScript.sol";
+import {Simulation} from "@base-contracts/script/universal/Simulation.sol";
+
+interface IOptimismPortal2 {
+    function depositTransaction(address _to, uint256 _value, uint64 _gasLimit, bool _isCreation, bytes memory _data)
+        external
+        payable;
+}
+
+interface IProxy {
+    function upgradeTo(address newImplementation) external;
+}
+
+/// @title UpgradeFeeDisburser
+/// @notice Script to upgrade the FeeDisburser proxy on L2 via a deposit transaction from L1.
+///         The FeeDisburser proxy is owned by CB_NESTED_SAFE_ADDR on L1, so this upgrade
+///         must be executed as a deposit transaction through OptimismPortal2.
+contract UpgradeFeeDisburser is MultisigScript {
+    /// @notice The L1 Safe that owns the FeeDisburser proxy (aliased address is the admin).
+    address public immutable OWNER_SAFE = vm.envAddress("CB_NESTED_SAFE_ADDR");
+
+    /// @notice The OptimismPortal2 contract on L1 used for deposit transactions.
+    address public immutable OPTIMISM_PORTAL = vm.envAddress("OPTIMISM_PORTAL_ADDR");
+
+    /// @notice The FeeDisburser proxy contract on L2.
+    address public immutable FEE_DISBURSER_PROXY = vm.envAddress("FEE_DISBURSER_ADDR");
+
+    /// @notice The new FeeDisburser implementation contract on L2.
+    address public immutable FEE_DISBURSER_IMPL = vm.envAddress("FEE_DISBURSER_IMPL_ADDR");
+
+    /// @notice Post-check is a no-op since we cannot verify L2 state from L1 simulation.
+    ///         The upgrade result should be verified on L2 after the deposit transaction is processed.
+    function _postCheck(Vm.AccountAccess[] memory, Simulation.Payload memory) internal override {}
+
+    /// @notice Builds the call to OptimismPortal2.depositTransaction that will upgrade
+    ///         the FeeDisburser proxy on L2.
+    function _buildCalls() internal view override returns (MultisigScript.Call[] memory) {
+        MultisigScript.Call[] memory calls = new MultisigScript.Call[](1);
+
+        // Build the upgradeTo calldata to call directly on the FeeDisburser proxy
+        bytes memory upgradeCalldata = abi.encodeCall(IProxy.upgradeTo, (FEE_DISBURSER_IMPL));
+
+        // Parameters for the deposit transaction
+        address to = FEE_DISBURSER_PROXY;
+        uint256 value = 0;
+        uint64 gasLimit = 100_000; // Sufficient gas for proxy upgrade
+        bool isCreation = false;
+
+        calls[0] = MultisigScript.Call({
+            operation: Enum.Operation.Call,
+            target: OPTIMISM_PORTAL,
+            data: abi.encodeCall(
+                IOptimismPortal2.depositTransaction, (to, value, gasLimit, isCreation, upgradeCalldata)
+            ),
+            value: 0
+        });
+
+        return calls;
+    }
+
+    /// @notice Returns the Safe address that will execute this transaction on L1.
+    function _ownerSafe() internal view override returns (address) {
+        return OWNER_SAFE;
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/script/UpgradeSystemConfig.s.sol b/mainnet/2026-02-19-superchain-separation/script/UpgradeSystemConfig.s.sol
new file mode 100644
index 00000000..fe2a60f1
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/UpgradeSystemConfig.s.sol
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {Vm} from "forge-std/Vm.sol";
+
+import {MultisigScript, Enum} from "@base-contracts/script/universal/MultisigScript.sol";
+import {Simulation} from "@base-contracts/script/universal/Simulation.sol";
+import {SystemConfig, IResourceMetering, ISuperchainConfig} from "@base-contracts/src/L1/SystemConfig.sol";
+import {IProxyAdmin} from "@base-contracts/interfaces/universal/IProxyAdmin.sol";
+
+/// @title UpgradeSystemConfig
+/// @notice Script to upgrade the SystemConfig proxy to a new implementation and reinitialize
+///         it with a new SuperchainConfig address. This preserves all existing configuration
+///         parameters while updating the SuperchainConfig reference.
+contract UpgradeSystemConfig is MultisigScript {
+    /// @notice The Safe that owns the ProxyAdmin and will execute this upgrade.
+    address public immutable OWNER_SAFE = vm.envAddress("OWNER_SAFE");
+
+    /// @notice The ProxyAdmin contract that manages the SystemConfig proxy.
+    address public immutable PROXY_ADMIN = vm.envAddress("PROXY_ADMIN");
+
+    /// @notice The SystemConfig proxy contract to be upgraded.
+    address public immutable SYSTEM_CONFIG = vm.envAddress("SYSTEM_CONFIG");
+
+    /// @notice The new SystemConfig implementation contract.
+    address public immutable SYSTEM_CONFIG_IMPLEMENTATION = vm.envAddress("SYSTEM_CONFIG_IMPLEMENTATION");
+
+    /// @notice The new SuperchainConfig address to set during reinitialization.
+    address public immutable NEW_SUPERCHAIN_CONFIG = vm.envAddress("NEW_SUPERCHAIN_CONFIG");
+
+    /// @notice Validates the post-upgrade state.
+    /// @dev Verifies that:
+    ///      1. The implementation was updated correctly
+    ///      2. The SuperchainConfig was set to the new address
+    ///      3. All existing parameters were preserved
+    function _postCheck(Vm.AccountAccess[] memory, Simulation.Payload memory) internal view override {
+        SystemConfig systemConfig = SystemConfig(SYSTEM_CONFIG);
+
+        // Verify the implementation was updated
+        address currentImpl = IProxyAdmin(PROXY_ADMIN).getProxyImplementation(SYSTEM_CONFIG);
+        require(currentImpl == SYSTEM_CONFIG_IMPLEMENTATION, "Postcheck: Implementation not updated");
+
+        // Verify the SuperchainConfig was updated
+        require(
+            address(systemConfig.superchainConfig()) == NEW_SUPERCHAIN_CONFIG, "Postcheck: SuperchainConfig not updated"
+        );
+    }
+
+    /// @notice Builds the upgrade call to ProxyAdmin.upgradeAndCall.
+    /// @dev Reads all existing SystemConfig parameters and rebuilds the initialize calldata
+    ///      with the new SuperchainConfig address. All other parameters are preserved.
+    function _buildCalls() internal view override returns (MultisigScript.Call[] memory) {
+        SystemConfig systemConfig = SystemConfig(SYSTEM_CONFIG);
+
+        // Get all existing SystemConfig parameters
+        address owner = systemConfig.owner();
+        uint32 basefeeScalar = systemConfig.basefeeScalar();
+        uint32 blobbasefeeScalar = systemConfig.blobbasefeeScalar();
+        bytes32 batcherHash = systemConfig.batcherHash();
+        uint64 gasLimit = systemConfig.gasLimit();
+        address unsafeBlockSigner = systemConfig.unsafeBlockSigner();
+        IResourceMetering.ResourceConfig memory resourceConfig = systemConfig.resourceConfig();
+        address batchInbox = systemConfig.batchInbox();
+        uint256 l2ChainId = systemConfig.l2ChainId();
+
+        // Get the Addresses struct
+        SystemConfig.Addresses memory addresses = systemConfig.getAddresses();
+
+        // Build the initialize calldata with the new SuperchainConfig
+        bytes memory initializeCalldata = abi.encodeCall(
+            SystemConfig.initialize,
+            (
+                owner,
+                basefeeScalar,
+                blobbasefeeScalar,
+                batcherHash,
+                gasLimit,
+                unsafeBlockSigner,
+                resourceConfig,
+                batchInbox,
+                addresses,
+                l2ChainId,
+                ISuperchainConfig(NEW_SUPERCHAIN_CONFIG)
+            )
+        );
+
+        MultisigScript.Call[] memory calls = new MultisigScript.Call[](1);
+
+        calls[0] = MultisigScript.Call({
+            operation: Enum.Operation.Call,
+            target: PROXY_ADMIN,
+            data: abi.encodeCall(
+                IProxyAdmin.upgradeAndCall, (payable(SYSTEM_CONFIG), SYSTEM_CONFIG_IMPLEMENTATION, initializeCalldata)
+            ),
+            value: 0
+        });
+
+        return calls;
+    }
+
+    /// @notice Returns the Safe address that will execute this transaction.
+    function _ownerSafe() internal view override returns (address) {
+        return OWNER_SAFE;
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/script/WithdrawSmartEscrow.s.sol b/mainnet/2026-02-19-superchain-separation/script/WithdrawSmartEscrow.s.sol
new file mode 100644
index 00000000..976b2169
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/script/WithdrawSmartEscrow.s.sol
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import {Vm} from "forge-std/Vm.sol";
+
+import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
+import {MultisigScript, Enum} from "@base-contracts/script/universal/MultisigScript.sol";
+import {Simulation} from "@base-contracts/script/universal/Simulation.sol";
+
+interface ISmartEscrow {
+    function withdrawUnvestedTokens() external;
+    function contractTerminated() external view returns (bool);
+}
+
+/// @title WithdrawSmartEscrow
+/// @notice Script to withdraw unvested tokens from the SmartEscrow contract via a multisig transaction.
+///         The caller must have the DEFAULT_ADMIN_ROLE on the SmartEscrow contract.
+///         The contract must be terminated before calling this function.
+///         This withdraws all remaining OP tokens to the benefactor address.
+contract WithdrawSmartEscrow is MultisigScript {
+    /// @notice OP token contract address.
+    IERC20 public constant OP_TOKEN = IERC20(0x4200000000000000000000000000000000000042);
+
+    /// @notice Storage slot for the `contractTerminated` variable in the SmartEscrow contract.
+    /// @dev    This slot was determined using `forge inspect SmartEscrow storage-layout`.
+    bytes32 public constant CONTRACT_TERMINATED_SLOT = bytes32(uint256(6));
+
+    /// @notice The Safe address that has the DEFAULT_ADMIN_ROLE on the SmartEscrow contract.
+    address public immutable OWNER_SAFE = vm.envAddress("OWNER_SAFE_ON_OP");
+
+    /// @notice The SmartEscrow contract address to withdraw from.
+    address public immutable SMART_ESCROW = vm.envAddress("SMART_ESCROW");
+
+    /// @notice Verifies that the SmartEscrow contract's OP token balance is zero after withdrawal.
+    function _postCheck(Vm.AccountAccess[] memory, Simulation.Payload memory) internal view override {
+        require(ISmartEscrow(SMART_ESCROW).contractTerminated(), "Postcheck: SmartEscrow contract must be terminated");
+        require(OP_TOKEN.balanceOf(SMART_ESCROW) == 0, "Postcheck: SmartEscrow OP token balance is not zero");
+    }
+
+    /// @notice Builds the call to SmartEscrow.withdrawUnvestedTokens().
+    function _buildCalls() internal view override returns (MultisigScript.Call[] memory) {
+        MultisigScript.Call[] memory calls = new MultisigScript.Call[](1);
+
+        calls[0] = MultisigScript.Call({
+            operation: Enum.Operation.Call,
+            target: SMART_ESCROW,
+            data: abi.encodeCall(ISmartEscrow.withdrawUnvestedTokens, ()),
+            value: 0
+        });
+
+        return calls;
+    }
+
+    function _simulationOverrides()
+        internal
+        view
+        virtual
+        override
+        returns (Simulation.StateOverride[] memory overrides_)
+    {
+        // If the contract is not yet terminated, override the storage slot to simulate termination.
+        if (!ISmartEscrow(SMART_ESCROW).contractTerminated()) {
+            Simulation.StorageOverride[] memory storageOverrides = new Simulation.StorageOverride[](1);
+            storageOverrides[0] = Simulation.StorageOverride({
+                key: CONTRACT_TERMINATED_SLOT,
+                value: bytes32(uint256(1)) // true
+            });
+
+            overrides_ = new Simulation.StateOverride[](1);
+            overrides_[0] = Simulation.StateOverride(SMART_ESCROW, storageOverrides);
+        }
+    }
+
+    /// @notice Returns the Safe address that will execute this transaction.
+    function _ownerSafe() internal view override returns (address) {
+        return OWNER_SAFE;
+    }
+}
diff --git a/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-1.json b/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-1.json
new file mode 100644
index 00000000..1ddadb23
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-1.json
@@ -0,0 +1,131 @@
+{
+  "cmd": "forge script --rpc-url https://eth-mainnet.public.blastapi.io UpdateProxyAdminOwnerSigners --sig sign(address[]) [0x9C4a57Feb77e294Fd7BF5EBE9AB01CAA0a90A110,0x9855054731540A48b28990B63DcF4f33d8AE46A1] --sender 0x6CD3850756b7894774Ab715D136F9dD02837De50",
+  "ledgerId": 0,
+  "rpcUrl": "https://eth-mainnet.public.blastapi.io",
+  "expectedDomainAndMessageHashes": {
+    "address": "0x7bB41C3008B3f03FE483B28b8DB90e19Cf07595c",
+    "domainHash": "0xfb308368b8deca582e84a807d31c1bfcec6fda754061e2801b4d6be5cb52a8ac",
+    "messageHash": "0xe3a5f42b5613c94fe4d367f9eb630b04bb659529c04b6a094f49ecf3ac33f4ef"
+  },
+  "stateOverrides": [
+    {
+      "name": "Proxy Admin Owner - Mainnet",
+      "address": "0x7bb41c3008b3f03fe483b28b8db90e19cf07595c",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Coordinator Safe - Mainnet",
+      "address": "0x9855054731540a48b28990b63dcf4f33d8ae46a1",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Signer Safe - Mainnet",
+      "address": "0x9c4a57feb77e294fd7bf5ebe9ab01caa0a90a110",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xfbb587efcd31a015069060729500c9da1b0b21ab0266eeb64ac69ae06fa73749",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Simulates an approval from msg.sender in order for the task simulation to succeed.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "stateChanges": [
+    {
+      "name": "Proxy Admin Owner - Mainnet",
+      "address": "0x7bb41c3008b3f03fe483b28b8db90e19cf07595c",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x000000000000000000000000000000000000000000000000000000000000000c",
+          "after": "0x000000000000000000000000000000000000000000000000000000000000000d",
+          "description": "Increments the Safe nonce from 12 to 13 after executing the swapOwner transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x656ef5b4b14cbca072b202c6f6f3a34c59dc29c67dfbbbd0f8de50e5f9e11249",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets approvedHashes[CB Coordinator Safe][txHash] = 1, recording the CB Coordinator Safe's approval for this transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xad7f222f29a1b375bb6b2847405c3279f1dff83a30de9e555815353d94c2306b",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Removes OP Safe (0x9ba6e03d8b90de867373db8cf1a58d2f7f006b3a) from the owners linked list by clearing its entry.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xb79e2255a19f37f0fc20cbcd8e46bdb84bf2577e147dcf50c4471a96c0623f53",
+          "before": "0x0000000000000000000000009ba6e03d8b90de867373db8cf1a58d2f7f006b3a",
+          "after": "0x00000000000000000000000020acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+          "description": "Updates the owners linked list pointer to replace OP Safe with Security Council Safe (0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xc68c82056a4782e6920506248dec06b7949eabf81d66a13e5e8ec70d4e8f4b13",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Adds Security Council Safe to the owners linked list by setting its entry to point to SENTINEL (0x1).",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Coordinator Safe - Mainnet",
+      "address": "0x9855054731540a48b28990b63dcf4f33d8ae46a1",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000019",
+          "after": "0x000000000000000000000000000000000000000000000000000000000000001a",
+          "description": "Increments the Safe nonce from 25 to 26 after executing the nested approval transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x5a2e7399a603e2f21ccde8c01d9d1493ce6bcd93b3bc7c7d048defe77279ec45",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets approvedHashes[CB Signer Safe][txHash] = 1, recording the CB Signer Safe's approval for the nested transaction to the Proxy Admin Owner.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Signer Safe - Mainnet",
+      "address": "0x9c4a57feb77e294fd7bf5ebe9ab01caa0a90a110",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "description": "Increments the Safe nonce from 5 to 6 after the signer submits their approval.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "balanceChanges": []
+}
diff --git a/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-2.json b/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-2.json
new file mode 100644
index 00000000..15e8b82e
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-2.json
@@ -0,0 +1,167 @@
+{
+  "cmd": "SAFE_NONCE_0X9C4A57FEB77E294FD7BF5EBE9AB01CAA0A90A110=6 SAFE_NONCE_0X9855054731540A48B28990B63DCF4F33D8AE46A1=26 forge script --rpc-url https://eth-mainnet.public.blastapi.io UpdateCBSafeSigners --sig sign(address[]) [0x9C4a57Feb77e294Fd7BF5EBE9AB01CAA0a90A110] --sender 0x6CD3850756b7894774Ab715D136F9dD02837De50",
+  "ledgerId": 0,
+  "rpcUrl": "https://eth-mainnet.public.blastapi.io",
+  "expectedDomainAndMessageHashes": {
+    "address": "0x9855054731540A48b28990B63DcF4f33d8AE46A1",
+    "domainHash": "0xfb308368b8deca582e84a807d31c1bfcec6fda754061e2801b4d6be5cb52a8ac",
+    "messageHash": "0xcf218ba5d243072a2ee37f449c5fde85ca0d6f6629545e6f5fa8a257603b01d5"
+  },
+  "stateOverrides": [
+    {
+      "name": "CB Coordinator Safe - Mainnet",
+      "address": "0x9855054731540a48b28990b63dcf4f33d8ae46a1",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur with a single signer.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "value": "0x000000000000000000000000000000000000000000000000000000000000001a",
+          "description": "Override the nonce to 26, the expected value after Part 1 (UpdateProxyAdminOwnerSigners) executes.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Signer Safe - Mainnet",
+      "address": "0x9c4a57feb77e294fd7bf5ebe9ab01caa0a90a110",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur with a single signer.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "description": "Override the nonce to 6, the expected value after Part 1 (UpdateProxyAdminOwnerSigners) executes.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x02096db9dce13194ab343de91965eb80e6976f198a5bbec4430338949271d2fb",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets approvedHashes[msg.sender][txHash] = 1 to simulate an approval from the signer, allowing the transaction simulation to succeed.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "stateChanges": [
+    {
+      "name": "CB Coordinator Safe - Mainnet",
+      "address": "0x9855054731540a48b28990b63dcf4f33d8ae46a1",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000003",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000002",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "description": "Updates the owner count from 2 to 6 (removes Security Council Safe and CB Nested Safe, adds 6 individual EOA signers).",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000003",
+          "description": "Updates the Safe execution threshold from 1 to 3 (3-of-6 required for execution).",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x000000000000000000000000000000000000000000000000000000000000001a",
+          "after": "0x000000000000000000000000000000000000000000000000000000000000001b",
+          "description": "Increments the Safe nonce from 26 to 27 after executing the UpdateCBSafeSigners transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x1772a703ae675a1daf302df5578a40ec15df2da0f370aaae76c24b3dc3cf5a82",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Adds EOA signer to owners linked list by setting its entry to point to SENTINEL (0x1), marking it as the last owner.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x41ed7d57be3aeb16e937147407ec4fe9778850776e44a977f984860d4294c66f",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000003cd692ece8b6573a2220ae00d0deb98f0dffa9a1",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0x3cd692ece8b6573a2220ae00d0deb98f0dffa9a1).",
+          "allowDifference": false
+        },
+        {
+          "key": "0x758f7362f1c252e82fc720287a93c81366f743607812809705593fe1d7c3853f",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x000000000000000000000000b011a32ed8b4f70d9943a2199f539bbecd7b62f7",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0xb011a32ed8b4f70d9943a2199f539bbecd7b62f7).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xc2eb038642409cacb7427667d194e7ffc6322f605a293c3088ea50e7387c0be8",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000001c870776b168a9ffae80c51f050c611edd246741",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0x1c870776b168a9ffae80c51f050c611edd246741).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xc68c82056a4782e6920506248dec06b7949eabf81d66a13e5e8ec70d4e8f4b13",
+          "before": "0x0000000000000000000000009c4a57feb77e294fd7bf5ebe9ab01caa0a90a110",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Removes CB Nested Safe (0x9c4a57feb77e294fd7bf5ebe9ab01caa0a90a110) from the owners linked list by clearing its entry.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xdaf8a00b5bed19da86efcb9f47bb7ded536a0ee70f1c43b062cb09e630709778",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000003dad2200849925bb46d9bf05afa5f7f213f4c18e",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0x3dad2200849925bb46d9bf05afa5f7f213f4c18e).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xe90b7bceb6e7df5418fb78d8ee546e97c83a08bbccc01a0644d599ccd2a7c2e0",
+          "before": "0x00000000000000000000000020acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+          "after": "0x000000000000000000000000f9e320f3da12e68af219d9e2a490dd649f6b177c",
+          "description": "Updates SENTINEL pointer (head of owners linked list) from Security Council Safe (0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd) to new first EOA signer (0xf9e320f3da12e68af219d9e2a490dd649f6b177c).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xf2703bf6aed371ed0006c3f1370d925046c90122272e607d356ede2c94165357",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Removes Security Council Safe (0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd) from owners linked list by clearing its entry (was pointing to SENTINEL).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xf50027dc233102bb13bb30a38326315505fe2452eaf2e2f78f1c0da0084d86c4",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000006cd3850756b7894774ab715d136f9dd02837de50",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0x6cd3850756b7894774ab715d136f9dd02837de50).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xfc3210f35f35f3bd1bd9c69b0b63bcfe5c94eefb24b5d3ec1c36a82d273ec2f7",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Stores approval on behalf of CB Safe.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Signer Safe - Mainnet",
+      "address": "0x9c4a57feb77e294fd7bf5ebe9ab01caa0a90a110",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000007",
+          "description": "Increments the Safe nonce from 6 to 7 after the signer submits their approval.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "balanceChanges": []
+}
diff --git a/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-5.json b/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-5.json
new file mode 100644
index 00000000..eec657db
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-5.json
@@ -0,0 +1,86 @@
+{
+  "cmd": "forge script --rpc-url https://mainnet.optimism.io TerminateSmartEscrow --sig sign(address[]) [] --sender 0x6CD3850756b7894774Ab715D136F9dD02837De50",
+  "ledgerId": 0,
+  "rpcUrl": "https://mainnet.optimism.io",
+  "expectedDomainAndMessageHashes": {
+    "address": "0x6e1DFd5C1E22A4677663A81D24C6BA03561ef0f6",
+    "domainHash": "0x4ac8f60706331537a33c4a4cbda024cb722855e6b160a3e8b28ab487510598b1",
+    "messageHash": "0xff53888d026d3cf3557a3c91bd99ca58e97d342cef8dc2ed5a190c4a3352f799"
+  },
+  "stateOverrides": [
+    {
+      "name": "CB Signer Safe - Optimism",
+      "address": "0x6e1dfd5c1e22a4677663a81d24c6ba03561ef0f6",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x13c86125570d7981706f2b7a58917ffc9e8ea8faf77052182023566ddb61da6c",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Simulates an approval from msg.sender in order for the task simulation to succeed.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "stateChanges": [
+    {
+      "name": "Governance Token - Optimism",
+      "address": "0x4200000000000000000000000000000000000042",
+      "changes": [
+        {
+          "key": "0x9c7ffc2d159d7a0a8143e9bb815194a3d0239701011646f61c42aefd6122e68c",
+          "before": "0x0000000000000000000000000000000000000000000766c7cfe16d7e0d200000",
+          "after": "0x00000000000000000000000000000000000000000003b363e7f0b6bf06900000",
+          "description": "Decreases SmartEscrow's (0xb3c2f9fc2727078ec3a2255410e83ba5b62c5b5f) OP token balance from 8,947,848 OP to 4,473,924 OP as vested tokens are released to the beneficiary.",
+          "allowDifference": true
+        },
+        {
+          "key": "0xa25c112a98bc980e2e953a0c73e7bfb4ea80467bb8f79b4fb803243e3595db67",
+          "before": "0x0000000000000000000000000000000000000000002a303fb9d34d5f1c0b0000",
+          "after": "0x0000000000000000000000000000000000000000002de3a3a1c4041e229b0000",
+          "description": "Increases the beneficiary's (0x635fb974f09b269bc750bf96338c29cf41430125) OP token balance by 4,473,924 OP, receiving the vested tokens released during termination.",
+          "allowDifference": true
+        }
+      ]
+    },
+    {
+      "name": "CB Signer Safe - Optimism",
+      "address": "0x6e1dfd5c1e22a4677663a81d24c6ba03561ef0f6",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000003",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "description": "Increments the Safe nonce from 3 to 4 after executing the TerminateSmartEscrow transaction.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "SmartEscrow - Optimism",
+      "address": "0xb3c2f9fc2727078ec3a2255410e83ba5b62c5b5f",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000002a303fcdf2bcb0685c0000",
+          "after": "0x0000000000000000000000000000000000000000002de3a3b5e3736f6eec0000",
+          "description": "Increases totalAmountReleased from 51,002,735 OP to 55,476,659 OP, tracking the cumulative 4,473,924 OP released to the beneficiary during termination.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets contractTerminated from false (0) to true (1), marking the SmartEscrow contract as permanently terminated.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "balanceChanges": []
+}
diff --git a/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-6.json b/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-6.json
new file mode 100644
index 00000000..bcccc192
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/validations/coinbase-signer-part-6.json
@@ -0,0 +1,116 @@
+{
+  "cmd": "SAFE_NONCE_0X6E1DFD5C1E22A4677663A81D24C6BA03561EF0F6=4 forge script --rpc-url https://mainnet.optimism.io WithdrawSmartEscrow --sig sign(address[]) [0x6e1DFd5C1E22A4677663A81D24C6BA03561ef0f6] --sender 0x6CD3850756b7894774Ab715D136F9dD02837De50",
+  "ledgerId": 0,
+  "rpcUrl": "https://mainnet.optimism.io",
+  "expectedDomainAndMessageHashes": {
+    "address": "0x0a7361e734cf3f0394B0FC4a45C74E7a4Ec70940",
+    "domainHash": "0x4ac8f60706331537a33c4a4cbda024cb722855e6b160a3e8b28ab487510598b1",
+    "messageHash": "0xe47bca5a208fb4739ae2381f86cb91d5386307481a7381c8381fe0e5f99186bb"
+  },
+  "stateOverrides": [
+    {
+      "name": "Owner Safe - Optimism",
+      "address": "0x0a7361e734cf3f0394b0fc4a45c74e7a4ec70940",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Signer Safe - Optimism",
+      "address": "0x6e1dfd5c1e22a4677663a81d24c6ba03561ef0f6",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "description": "Override the nonce to 4 to simulate the state after parts 1-5 have been executed.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x3d9213bb9c16b3af7b48531e517a418f86c1ed190cf932410b9396a84c06eb31",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Simulates an approval from msg.sender in order for the task simulation to succeed.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "SmartEscrow - Optimism",
+      "address": "0xb3c2f9fc2727078ec3a2255410e83ba5b62c5b5f",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Overrides contractTerminated from false (0) to true (1), marking the SmartEscrow contract as permanently terminated.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "stateChanges": [
+    {
+      "name": "Owner Safe - Optimism",
+      "address": "0x0a7361e734cf3f0394b0fc4a45c74e7a4ec70940",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000002",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000003",
+          "description": "Increments the Safe nonce from 2 to 3 after executing the WithdrawSmartEscrow transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xdaefa18710789b315c073a0a6715e936e4dd091921c4de5bca445545fd20e45a",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets approvedHashes[CB Signer Safe][txHash] = 1, recording the CB Signer Safe's (0x6e1dfd5c1e22a4677663a81d24c6ba03561ef0f6) approval for this transaction.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "Governance Token - Optimism",
+      "address": "0x4200000000000000000000000000000000000042",
+      "changes": [
+        {
+          "key": "0x9c7ffc2d159d7a0a8143e9bb815194a3d0239701011646f61c42aefd6122e68c",
+          "before": "0x0000000000000000000000000000000000000000000766c7cfe16d7e0d200000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Decreases SmartEscrow's (0xb3c2f9fc2727078ec3a2255410e83ba5b62c5b5f) OP token balance to 0 as all remaining unvested tokens are withdrawn to the benefactor. Note: The 'before' value reflects current state; after part-5 executes, the actual balance will be ~4,473,924 OP.",
+          "allowDifference": true
+        },
+        {
+          "key": "0xcac14c40c8d3847e740432064e9977516347ef1cecdd901d8d3a7d24e118edde",
+          "before": "0x000000000000000000000000000000000000000001ae577902e80b80e9414e71",
+          "after": "0x000000000000000000000000000000000000000001b5be40d2c978fef6614e71",
+          "description": "Increases the benefactor's (Owner Safe: 0x0a7361e734cf3f0394b0fc4a45c74e7a4ec70940) OP token balance, receiving the unvested tokens withdrawn from the SmartEscrow contract. Note: The actual amount will be ~4,473,924 OP after part-5 executes.",
+          "allowDifference": true
+        }
+      ]
+    },
+    {
+      "name": "CB Signer Safe - Optimism",
+      "address": "0x6e1dfd5c1e22a4677663a81d24c6ba03561ef0f6",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "description": "Increments the Safe nonce from 4 to 5 after the CB Signer Safe submits its approval for the WithdrawSmartEscrow transaction.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "balanceChanges": []
+}
diff --git a/mainnet/2026-02-19-superchain-separation/validations/optimism-op-mainnet-signer.json b/mainnet/2026-02-19-superchain-separation/validations/optimism-op-mainnet-signer.json
new file mode 100644
index 00000000..eedfc36c
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/validations/optimism-op-mainnet-signer.json
@@ -0,0 +1,110 @@
+{
+  "cmd": "forge script --rpc-url https://mainnet.optimism.io WithdrawSmartEscrow --sig sign(address[]) [0x2501c477D0A35545a387Aa4A3EEe4292A9a8B3F0] --sender 0x4d494C5F61b60752D3A10062276a0eFC22596151",
+  "ledgerId": 0,
+  "rpcUrl": "https://mainnet.optimism.io",
+  "expectedDomainAndMessageHashes": {
+    "address": "0x0a7361e734cf3f0394B0FC4a45C74E7a4Ec70940",
+    "domainHash": "0xb34978142f4478f3e5633915597a756daa58a1a59a3e0234f9acd5444f1ca70e",
+    "messageHash": "0x3ffed7c94bddf882232c2ec9ff3ccabb16ea3fb6396e716a53b9310b867c8e31"
+  },
+  "stateOverrides": [
+    {
+      "name": "Owner Safe - Optimism",
+      "address": "0x0a7361e734cf3f0394b0fc4a45c74e7a4ec70940",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "Optimism Signer Safe - Optimism",
+      "address": "0x2501c477d0a35545a387aa4a3eee4292a9a8b3f0",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x5aafabfc11918d52e3ca9c466bb8697b5dd2c738d05a136f44e4855dd8ba934f",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Simulates an approval from msg.sender in order for the task simulation to succeed.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "SmartEscrow - Optimism",
+      "address": "0xb3c2f9fc2727078ec3a2255410e83ba5b62c5b5f",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Overrides contractTerminated from false (0) to true (1), marking the SmartEscrow contract as permanently terminated.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "stateChanges": [
+    {
+      "name": "Owner Safe - Optimism",
+      "address": "0x0a7361e734cf3f0394b0fc4a45c74e7a4ec70940",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000002",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000003",
+          "description": "Increments the Safe nonce from 2 to 3 after executing the WithdrawSmartEscrow transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xb1c95fcac4fdae1ba0795d84c4fcffb6e0c71dec884cdedbdde2ed87bdc4541f",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets approvedHashes[Optimism Signer Safe][txHash] = 1, recording the Optimism Signer Safe's (0x2501c477d0a35545a387aa4a3eee4292a9a8b3f0) approval for this transaction.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "Optimism Signer Safe - Optimism",
+      "address": "0x2501c477d0a35545a387aa4a3eee4292a9a8b3f0",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x00000000000000000000000000000000000000000000000000000000000000b5",
+          "after": "0x00000000000000000000000000000000000000000000000000000000000000b6",
+          "description": "Increments the Safe nonce from 181 to 182 after the Optimism Signer Safe submits its approval for the WithdrawSmartEscrow transaction.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "Governance Token - Optimism",
+      "address": "0x4200000000000000000000000000000000000042",
+      "changes": [
+        {
+          "key": "0x9c7ffc2d159d7a0a8143e9bb815194a3d0239701011646f61c42aefd6122e68c",
+          "before": "0x0000000000000000000000000000000000000000000766c7cfe16d7e0d200000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Decreases SmartEscrow's (0xb3c2f9fc2727078ec3a2255410e83ba5b62c5b5f) OP token balance to 0 as all remaining unvested tokens are withdrawn to the benefactor. Note: The 'before' value reflects current state; after part-5 executes, the actual balance will be ~4,473,924 OP.",
+          "allowDifference": true
+        },
+        {
+          "key": "0xcac14c40c8d3847e740432064e9977516347ef1cecdd901d8d3a7d24e118edde",
+          "before": "0x000000000000000000000000000000000000000001ae577902e80b80e9414e71",
+          "after": "0x000000000000000000000000000000000000000001b5be40d2c978fef6614e71",
+          "description": "Increases the benefactor's (Owner Safe: 0x0a7361e734cf3f0394b0fc4a45c74e7a4ec70940) OP token balance, receiving the unvested tokens withdrawn from the SmartEscrow contract. Note: The actual amount will be ~4,473,924 OP after part-5 executes.",
+          "allowDifference": true
+        }
+      ]
+    }
+  ],
+  "balanceChanges": []
+}
diff --git a/mainnet/2026-02-19-superchain-separation/validations/optimism-signer.json b/mainnet/2026-02-19-superchain-separation/validations/optimism-signer.json
new file mode 100644
index 00000000..99f4c629
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/validations/optimism-signer.json
@@ -0,0 +1,99 @@
+{
+  "cmd": "forge script --rpc-url https://eth-mainnet.public.blastapi.io UpdateProxyAdminOwnerSigners --sig sign(address[]) [0x9BA6e03D8B90dE867373Db8cF1A58d2F7F006b3A] --sender 0x42d27eEA1AD6e22Af6284F609847CB3Cd56B9c64",
+  "ledgerId": 0,
+  "rpcUrl": "https://eth-mainnet.public.blastapi.io",
+  "expectedDomainAndMessageHashes": {
+    "address": "0x7bB41C3008B3f03FE483B28b8DB90e19Cf07595c",
+    "domainHash": "0x2e5ad244d335c45fbace4ebd1736b0fad81b01591a2819baedad311ead5bce76",
+    "messageHash": "0x7f5de36359f775e1c37d61905081bc7dffd5ed6905f209a3d24fcc2ef7171014"
+  },
+  "stateOverrides": [
+    {
+      "name": "Proxy Admin Owner - Mainnet",
+      "address": "0x7bb41c3008b3f03fe483b28b8db90e19cf07595c",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "OP Signer Safe - Mainnet",
+      "address": "0x9ba6e03d8b90de867373db8cf1a58d2f7f006b3a",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x084f23a835476254f554ff008fb4f329b511becce8e5c2e5beb3e32ffaf3cf68",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Simulates an approval from msg.sender in order for the task simulation to succeed.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "stateChanges": [
+    {
+      "name": "Proxy Admin Owner - Mainnet",
+      "address": "0x7bb41c3008b3f03fe483b28b8db90e19cf07595c",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x000000000000000000000000000000000000000000000000000000000000000c",
+          "after": "0x000000000000000000000000000000000000000000000000000000000000000d",
+          "description": "Increments the Safe nonce from 12 to 13 after executing the swapOwner transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x32a1a1697b7d58db65fedf41799bee0099320ee6b08d854617ae83bf8f45f996",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets approvedHashes[OP Safe][txHash] = 1, recording the OP Safe's approval for this transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xad7f222f29a1b375bb6b2847405c3279f1dff83a30de9e555815353d94c2306b",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Removes OP Safe (0x9ba6e03d8b90de867373db8cf1a58d2f7f006b3a) from the owners linked list by clearing its entry.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xb79e2255a19f37f0fc20cbcd8e46bdb84bf2577e147dcf50c4471a96c0623f53",
+          "before": "0x0000000000000000000000009ba6e03d8b90de867373db8cf1a58d2f7f006b3a",
+          "after": "0x00000000000000000000000020acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+          "description": "Updates the owners linked list pointer to replace OP Safe with Security Council Safe (0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xc68c82056a4782e6920506248dec06b7949eabf81d66a13e5e8ec70d4e8f4b13",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Adds Security Council Safe to the owners linked list by setting its entry to point to SENTINEL (0x1).",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "OP Signer Safe - Mainnet",
+      "address": "0x9ba6e03d8b90de867373db8cf1a58d2f7f006b3a",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000071",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000072",
+          "description": "Increments the Safe nonce from 113 to 114 after the signer submits their approval.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "balanceChanges": []
+}
diff --git a/mainnet/2026-02-19-superchain-separation/validations/security-council-signer-part-1.json b/mainnet/2026-02-19-superchain-separation/validations/security-council-signer-part-1.json
new file mode 100644
index 00000000..1bf491fb
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/validations/security-council-signer-part-1.json
@@ -0,0 +1,131 @@
+{
+  "cmd": "forge script --rpc-url https://eth-mainnet.public.blastapi.io UpdateProxyAdminOwnerSigners --sig sign(address[]) [0x20AcF55A3DCfe07fC4cecaCFa1628F788EC8A4Dd,0x9855054731540A48b28990B63DcF4f33d8AE46A1] --sender 0x5ff5C78ff194acc24C22DAaDdE4D639ebF18ACC6",
+  "ledgerId": 0,
+  "rpcUrl": "https://eth-mainnet.public.blastapi.io",
+  "expectedDomainAndMessageHashes": {
+    "address": "0x7bB41C3008B3f03FE483B28b8DB90e19Cf07595c",
+    "domainHash": "0x1fbfdc61ceb715f63cb17c56922b88c3a980f1d83873df2b9325a579753e8aa3",
+    "messageHash": "0xbf33ec62fca0fa5d0ac4e2cc63314a9c881452ce8f46e5371c8cd062559b69db"
+  },
+  "stateOverrides": [
+    {
+      "name": "Security Council Safe - Mainnet",
+      "address": "0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x4e0751c71d4768f76bad2873e575def814ef86ee49f2b483a42df7f3a38af0cb",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Simulates an approval from msg.sender in order for the task simulation to succeed.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "Proxy Admin Owner - Mainnet",
+      "address": "0x7bb41c3008b3f03fe483b28b8db90e19cf07595c",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Coordinator Safe - Mainnet",
+      "address": "0x9855054731540a48b28990b63dcf4f33d8ae46a1",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "stateChanges": [
+    {
+      "name": "Security Council Safe - Mainnet",
+      "address": "0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "description": "Increments the Safe nonce from 4 to 5 after the signer submits their approval.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "Proxy Admin Owner - Mainnet",
+      "address": "0x7bb41c3008b3f03fe483b28b8db90e19cf07595c",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x000000000000000000000000000000000000000000000000000000000000000c",
+          "after": "0x000000000000000000000000000000000000000000000000000000000000000d",
+          "description": "Increments the Safe nonce from 12 to 13 after executing the swapOwner transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x656ef5b4b14cbca072b202c6f6f3a34c59dc29c67dfbbbd0f8de50e5f9e11249",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets approvedHashes[CB Coordinator Safe][txHash] = 1, recording the CB Coordinator Safe's approval for this transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xad7f222f29a1b375bb6b2847405c3279f1dff83a30de9e555815353d94c2306b",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Removes OP Safe (0x9ba6e03d8b90de867373db8cf1a58d2f7f006b3a) from the owners linked list by clearing its entry.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xb79e2255a19f37f0fc20cbcd8e46bdb84bf2577e147dcf50c4471a96c0623f53",
+          "before": "0x0000000000000000000000009ba6e03d8b90de867373db8cf1a58d2f7f006b3a",
+          "after": "0x00000000000000000000000020acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+          "description": "Updates the owners linked list pointer to replace OP Safe with Security Council Safe (0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xc68c82056a4782e6920506248dec06b7949eabf81d66a13e5e8ec70d4e8f4b13",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Adds Security Council Safe to the owners linked list by setting its entry to point to SENTINEL (0x1).",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Coordinator Safe - Mainnet",
+      "address": "0x9855054731540a48b28990b63dcf4f33d8ae46a1",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000019",
+          "after": "0x000000000000000000000000000000000000000000000000000000000000001a",
+          "description": "Increments the Safe nonce from 25 to 26 after executing the nested approval transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xaa10226b3a9d61778d3a357d07f03e02ac17f7c61d581b9724ea2e14760ce99b",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Sets approvedHashes[SC Signer Safe][txHash] = 1, recording the SC Signer Safe's approval for the nested transaction to the Proxy Admin Owner.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "balanceChanges": []
+}
diff --git a/mainnet/2026-02-19-superchain-separation/validations/security-council-signer-part-2.json b/mainnet/2026-02-19-superchain-separation/validations/security-council-signer-part-2.json
new file mode 100644
index 00000000..71ba7c4b
--- /dev/null
+++ b/mainnet/2026-02-19-superchain-separation/validations/security-council-signer-part-2.json
@@ -0,0 +1,167 @@
+{
+  "cmd": "SAFE_NONCE_0X20ACF55A3DCFE07FC4CECACFA1628F788EC8A4DD=5 SAFE_NONCE_0X9855054731540A48B28990B63DCF4F33D8AE46A1=26 forge script --rpc-url https://eth-mainnet.public.blastapi.io UpdateCBSafeSigners --sig sign(address[]) [0x20AcF55A3DCfe07fC4cecaCFa1628F788EC8A4Dd] --sender 0x5ff5C78ff194acc24C22DAaDdE4D639ebF18ACC6",
+  "ledgerId": 0,
+  "rpcUrl": "https://eth-mainnet.public.blastapi.io",
+  "expectedDomainAndMessageHashes": {
+    "address": "0x9855054731540A48b28990B63DcF4f33d8AE46A1",
+    "domainHash": "0x1fbfdc61ceb715f63cb17c56922b88c3a980f1d83873df2b9325a579753e8aa3",
+    "messageHash": "0x7154e24460ea33c5b171dfc4afdea3d8dbf68aeeeda39ddefb156e2a843ff580"
+  },
+  "stateOverrides": [
+    {
+      "name": "Security Council Safe - Mainnet",
+      "address": "0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "description": "Override the nonce to be our expected value after initial execution.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x20e68b4998d5b9dcd509344b3da5ccb127c8777b46427794ec01b23b3134f849",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Simulates an approval from msg.sender in order for the task simulation to succeed.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Coordinator Safe - Mainnet",
+      "address": "0x9855054731540a48b28990b63dcf4f33d8ae46a1",
+      "overrides": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "value": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Override the threshold to 1 so the transaction simulation can occur.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "value": "0x000000000000000000000000000000000000000000000000000000000000001a",
+          "description": "Override the nonce to be our expected value after initial execution.",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "stateChanges": [
+    {
+      "name": "Security Council Safe - Mainnet",
+      "address": "0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "description": "Increments the Safe nonce from 5 to 6 after the signer submits their approval.",
+          "allowDifference": false
+        }
+      ]
+    },
+    {
+      "name": "CB Coordinator Safe - Mainnet",
+      "address": "0x9855054731540a48b28990b63dcf4f33d8ae46a1",
+      "changes": [
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000003",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000002",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000006",
+          "description": "Updates the owner count from 2 to 6 (removes Security Council Safe and CB Nested Safe, adds 6 individual EOA signers).",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000004",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000003",
+          "description": "Updates the Safe execution threshold from 1 to 3 (3-of-6 required for execution).",
+          "allowDifference": false
+        },
+        {
+          "key": "0x0000000000000000000000000000000000000000000000000000000000000005",
+          "before": "0x000000000000000000000000000000000000000000000000000000000000001a",
+          "after": "0x000000000000000000000000000000000000000000000000000000000000001b",
+          "description": "Increments the Safe nonce from 26 to 27 after executing the UpdateCBSafeSigners transaction.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x1772a703ae675a1daf302df5578a40ec15df2da0f370aaae76c24b3dc3cf5a82",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Adds EOA signer to owners linked list by setting its entry to point to SENTINEL (0x1), marking it as the last owner.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x2147295fdb477f732b4c1cdbe7372bb22db8dfb3d987f35032751f057d24cd71",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "description": "Stores approval on behalf of SC Safe.",
+          "allowDifference": false
+        },
+        {
+          "key": "0x41ed7d57be3aeb16e937147407ec4fe9778850776e44a977f984860d4294c66f",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000003cd692ece8b6573a2220ae00d0deb98f0dffa9a1",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0x3cd692ece8b6573a2220ae00d0deb98f0dffa9a1).",
+          "allowDifference": false
+        },
+        {
+          "key": "0x758f7362f1c252e82fc720287a93c81366f743607812809705593fe1d7c3853f",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x000000000000000000000000b011a32ed8b4f70d9943a2199f539bbecd7b62f7",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0xb011a32ed8b4f70d9943a2199f539bbecd7b62f7).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xc2eb038642409cacb7427667d194e7ffc6322f605a293c3088ea50e7387c0be8",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000001c870776b168a9ffae80c51f050c611edd246741",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0x1c870776b168a9ffae80c51f050c611edd246741).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xc68c82056a4782e6920506248dec06b7949eabf81d66a13e5e8ec70d4e8f4b13",
+          "before": "0x0000000000000000000000009c4a57feb77e294fd7bf5ebe9ab01caa0a90a110",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Removes CB Nested Safe (0x9c4a57feb77e294fd7bf5ebe9ab01caa0a90a110) from the owners linked list by clearing its entry.",
+          "allowDifference": false
+        },
+        {
+          "key": "0xdaf8a00b5bed19da86efcb9f47bb7ded536a0ee70f1c43b062cb09e630709778",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000003dad2200849925bb46d9bf05afa5f7f213f4c18e",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0x3dad2200849925bb46d9bf05afa5f7f213f4c18e).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xe90b7bceb6e7df5418fb78d8ee546e97c83a08bbccc01a0644d599ccd2a7c2e0",
+          "before": "0x00000000000000000000000020acf55a3dcfe07fc4cecacfa1628f788ec8a4dd",
+          "after": "0x000000000000000000000000f9e320f3da12e68af219d9e2a490dd649f6b177c",
+          "description": "Updates SENTINEL pointer (head of owners linked list) from Security Council Safe (0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd) to new first EOA signer (0xf9e320f3da12e68af219d9e2a490dd649f6b177c).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xf2703bf6aed371ed0006c3f1370d925046c90122272e607d356ede2c94165357",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000001",
+          "after": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "description": "Removes Security Council Safe (0x20acf55a3dcfe07fc4cecacfa1628f788ec8a4dd) from owners linked list by clearing its entry (was pointing to SENTINEL).",
+          "allowDifference": false
+        },
+        {
+          "key": "0xf50027dc233102bb13bb30a38326315505fe2452eaf2e2f78f1c0da0084d86c4",
+          "before": "0x0000000000000000000000000000000000000000000000000000000000000000",
+          "after": "0x0000000000000000000000006cd3850756b7894774ab715d136f9dd02837de50",
+          "description": "Adds EOA signer to owners linked list, setting its entry to point to next owner (0x6cd3850756b7894774ab715d136f9dd02837de50).",
+          "allowDifference": false
+        }
+      ]
+    }
+  ],
+  "balanceChanges": []
+}