nmc(P1f): HeaderChain::get_locator — BIP31 block locator (+6 KATs, 52->58) - #199
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frstrtr wants to merge 1 commit into
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nmc(P1f): HeaderChain::get_locator — BIP31 block locator (+6 KATs, 52->58)#199frstrtr wants to merge 1 commit into
frstrtr wants to merge 1 commit into
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…estry Build a getheaders block locator by walking the tip ancestry through m_previous_block with BIP31-style exponential backoff: dense near the tip, doubling the stride past the first 10 entries, chain root always anchored. Walking parent links follows the best chain we just fork-chose, so the locator stays correct across reorgs without a separate height index. Mirrors src/impl/btc/coin/header_chain.hpp. +6 KATs (empty / single / dense-short / long-contiguous-anchored / backoff / follows-tip-after-reorg); suite 52 -> 58 green.
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P1f — block locator (NMC HeaderChain)
P1e is complete (#197). This opens P1f:
HeaderChain::get_locator()— the getheaders locator the SPV header-sync path needs.What it does
m_previous_block: dense near the tip, stride doubles past the first 10 entries, chain root always anchored.src/impl/btc/coin/header_chain.hppshape.Tests
+6 KATs (empty / single / dense-short / long-contiguous+root-anchored / backoff-stride / follows-tip-after-work-reorg). Full
nmc_auxpow_merkle_testsuite 52 -> 58 green; build clean.Stacking
Based on #197 (
nmc/p1e-work-reorg-forkchoice). Rebase to master once #197 lands. I do not self-merge.