nmc(PF): pin mainnet_genesis_header() 80-byte seed (node-verified) - #262
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Retire the deferred mainnet genesis-header seed. Fields pinned against a live SYNCED mainnet namecoind (getblockhash 0 / getblockheader <hash> false; .140 PID 5860, blocks=830010, IBD=false; 2026-06-20): version=1 time=1303000001 bits=0x1c007fff nonce=0xa21ea192 merkleroot=41c62dbd..cb0d SHA256d(header) == 000000000062b72c..c770 (mainnet genesis hash), verified locally and by the new MainnetHeaderRederivesPinnedHash KAT. The KAT asserts against the external literal hash (daemon truth), not params.genesis_hash, so it holds regardless of merge order with the mainnet genesis_hash pin (#261). Fenced to src/impl/nmc/; rides the allowlisted nmc_auxpow_wire_test exe, no build.yml touch.
frstrtr
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…262/#264 + 2b-ii) (#284) The merge-mining consensus-parameters block-header comment still claimed NONE of the fields were committed and were placeholder sentinels pending pinning. That is stale: auxpow_activation_height (#258), pow_limit + genesis_hash (#261/#262), aux_chain_id (#264) and p2p_magic (2b-ii) are all pinned against namecoin-core chainparams.cpp and cross-checked on the synced .140 namecoind, with per-field provenance in the inline comments. Comment-only; fenced to src/impl/nmc/. Brings the conformance doc-state in line with the pinned reality so a reader does not wrongly conclude the params are unbaked. Co-authored-by: frstrtr <frstrtr@users.noreply.github.com>
frstrtr
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Jun 23, 2026
…262/#264 + 2b-ii) (#284) The merge-mining consensus-parameters block-header comment still claimed NONE of the fields were committed and were placeholder sentinels pending pinning. That is stale: auxpow_activation_height (#258), pow_limit + genesis_hash (#261/#262), aux_chain_id (#264) and p2p_magic (2b-ii) are all pinned against namecoin-core chainparams.cpp and cross-checked on the synced .140 namecoind, with per-field provenance in the inline comments. Comment-only; fenced to src/impl/nmc/. Brings the conformance doc-state in line with the pinned reality so a reader does not wrongly conclude the params are unbaked. Co-authored-by: frstrtr <frstrtr@users.noreply.github.com>
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NMC PF — retire the deferred mainnet genesis-header seed
Adds
NMCChainParams::mainnet_genesis_header()(mirror of the existingtestnet_genesis_header()) + theMainnetHeaderRederivesPinnedHashKAT.Source (node truth, not memory)
Fields pinned against a live SYNCED mainnet namecoind on .140 (PID 5860,
blocks=830010,initialblockdownload=false), 2026-06-20:Parsed:
version=1 time=1303000001 bits=0x1c007fff nonce=0xa21ea192 merkleroot=41c62dbd..cb0d.SHA256d(header)reproduces the genesis hash exactly (verified locally + by KAT).Fence / CI
src/impl/nmc/— no shared core, no other coin touched.nmc_auxpow_wire_testexe; no build.yml touch (avoids the NOT_BUILT sentinel).params.genesis_hash, so it is independent of merge order with the genesis_hash pin (nmc(PF): pin powLimit + mainnet genesis from namecoin-core (consensus values) #261). Non-colliding regions with nmc(PF): pin powLimit + mainnet genesis from namecoin-core (consensus values) #261.Verification
Consensus-VALUE pin -> operator tap (same class as #258/#259/#261). I do not self-merge.