kernel: add mainnet assumeutxo param at height 910'000
What the developer wrote
Authored by fanquake
kernel: add mainnet assumeutxo param at height 910'000
What changed, and why it matters
This commit adds a new precomputed snapshot point for Bitcoin's 'assumeutxo' feature at mainnet block height 910,000. This is a routine network-parameter update that helps new nodes sync faster; it does not change consensus rules, fix a bug, or introduce a security vulnerability.
No security action required. Operators and downstream packagers may verify the published assumeutxo hash against an independently computed UTXO snapshot at height 910,000 before distributing or using it.
Security signals we found
No strong security signals were identified.
Evidence from the diff
The patch appends an additional assumeutxo entry to CMainParams::m_assumeutxo_data in src/kernel/chainparams.cpp. The entry provides the serialized UTXO set hash, cumulative chain transaction count, and block hash for mainnet height 910,000. This data is used only as an optional trusted starting point for initial block download; it is not consensus-critical and any mismatch is detectable by the node operator.
Changed components
src/kernel/chainparams.cppCMainParams::m_assumeutxo_dataInspect captured patch +6 / −0
diff --git a/src/kernel/chainparams.cpp b/src/kernel/chainparams.cpp
index d756e6fe..a60e2350 100644
--- a/src/kernel/chainparams.cpp
+++ b/src/kernel/chainparams.cpp
@@ -180,6 +180,12 @@ public:
.hash_serialized = AssumeutxoHash{uint256{"dbd190983eaf433ef7c15f78a278ae42c00ef52e0fd2a54953782175fbadcea9"}},
.m_chain_tx_count = 1145604538,
.blockhash = consteval_ctor(uint256{"000000000000000000010b17283c3c400507969a9c2afd1dcf2082ec5cca2880"}),
+ },
+ {
+ .height = 910'000,
+ .hash_serialized = AssumeutxoHash{uint256{"4daf8a17b4902498c5787966a2b51c613acdab5df5db73f196fa59a4da2f1568"}},
+ .m_chain_tx_count = 1226586151,
+ .blockhash = consteval_ctor(uint256{"0000000000000000000108970acb9522ffd516eae17acddcb1bd16469194a821"}),
}
};
Why this scored 20/100
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