nmc(P1 PE 2b-0): pin testnet genesis + chain_id=1 in NMCChainParams - #233
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Replace the TO-CONFIRM placeholders in NMCChainParams::testnet() with the real Namecoin testnet genesis, pinned against a live namecoind on .140 (getblockhash 0 / getblockheader, 2026-06-19): version=1 time=1296688602 bits=0x1d07fff8 nonce=384568319 merkleroot=4a5e1e4b..deda33b -> hash=00000007..367b008 Add NMCChainParams::testnet_genesis_header() (the 80-byte parent the embedded HeaderChain seeds at height 0) and pin aux_chain_id=1 (Namecoin nAuxpowChainId=0x0001, both nets). New GenesisTestnet KAT re-derives the pinned hash via block_hash() (external daemon truth, not self-derived). Rides the allowlisted nmc_auxpow_wire_test exe -> no build.yml change. Mainnet genesis stays TO-CONFIRM: pinning needs a namecoin MAINNET node (.140 is currently on testnet, height 0). Fence: src/impl/nmc/ only.
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NMC P1 PE — slice 2b-0 (genesis pin, prerequisite to the cid=1 registration block)
Replaces the
TO-CONFIRMplaceholders inNMCChainParams::testnet()with the real Namecoin testnet genesis, pinned against a live namecoind on .140 (getblockhash 0/getblockheader, 2026-06-19) and re-derived locally:Also adds
NMCChainParams::testnet_genesis_header()(the 80-byte parent the embedded HeaderChain will seed at height 0) and pinsaux_chain_id = 1(NamecoinnAuxpowChainId = 0x0001, both nets) — the cid the registration block (2b) keys on.Test
New
NmcP1Genesis.TestnetHeaderRederivesPinnedHashKAT re-derives the pinned hash viablock_hash()— the expected hash is external daemon truth, not self-derived from the header. Rides the allowlistednmc_auxpow_wire_testexe → no build.yml change.nmc_auxpow_wire_test: 3/3 PASS.Fence / isolation
git diff --name-only: coin/header_chain.hpp, test/auxpow_wire_test.cpp). No shared seam, no other coin tree, no CI change.Known limitation (carried to 2b)
Mainnet genesis stays
TO-CONFIRM: pinning needs a namecoin MAINNET node. .140 is currently on testnet, height 0 (card237 recorded it as a synced mainnet node — it has since been repointed). The 2e won-block proof for the mainnet path needs a mainnet namecoind back online.Signed, zero-attribution. NMC-tree-only → auto-merge-eligible; I do not self-merge.