## Description Add single signer support to coldcard "edge" firmware ## Purpose Create working proof of concept for testing PSBT v2 with working BIP 375 example **Repository:** https://github.com/Coldcard/firmware/pull/587 **Development Team:** Lead: @macgyver13 <!-- ROADMAP_SYNC: {"status":"In Progress","release_phase":"Q1 2026 - Jan-Mar","area":"Wallet","last_sync":"2025-11-26T15:01:02.505Z"} -->