add Khromosome (chainId 777001)

[jdunn7]

Summary

Adds Khromosome — an identity-anchored EVM L1 — at chainId 777001.

• Native token: KHROME (18 decimals)
• Consensus: Ethereum PoS (Reth execution + Lighthouse consensus)
• Block time: ~12 s
• Explorer (EIP-3091): https://explorer.khromosome.network (Otterscan reading the chain directly via ots_ namespace)
• Public RPC: https://rpc.khromosome.xyz and wss://ws.khromosome.xyz
• Faucet: https://faucet.khromosome.network (10 KHROME + 1000 KDEMO per address, 24 h cooldown)
• Network site: https://khromosome.network

Live checks

$ curl -sX POST -H 'content-type: application/json' \
       -d '{"jsonrpc":"2.0","id":1,"method":"eth_chainId","params":[]}' \
       https://rpc.khromosome.xyz
{"jsonrpc":"2.0","id":1,"result":"0xbdb29"}    # 777001 ✓

Explorer EIP-3091 endpoints all return 200 OK:

• /tx/<hash> — block-explorer transaction view
• /block/<n> — block view
• /address/<addr> — address view

Notes

• Icon will be added in a follow-up PR once the asset is pinned to IPFS.
• Chain ID 777001 is currently unclaimed in _data/chains/.
• EIP155 + EIP1559 supported (Reth defaults).

[github-actions]

You successfully submitted a PR! Due to the amount of PRs coming in: we will only look at PRs that the CI is happy with. We can also not hold your hand getting the CI green - just look how others that where merged did it and RTFM. So as long as there is any CI check that reports an error - no human will look at this. You might be able to ask for some support after supporting the project - e.g. by sending funds to lists.eth. When you fixed things after a requested change - then you also need to (re-)request a review.