kernel: Chainparams and headerssync updates from Core #34677

[luke-jr]

Backport of bitcoin#34677 on Knots 29

When reviewing, please verify every change's correctness, not only that it works. These instructions may help

Also open to conceptual input on whether to apply the non-mainnet updates (currently the PR applies them and rolls them back)

[kwsantiago]

utACK ea4e349

[kwsantiago]

Independently verified all mainnet values against a fully synced Knots 29.3 node:

defaultAssumeValid (height 938343):

• getblockhash 938343 -> 00000000000000000000ccebd6d74d9194d8dcdc1d177c478e094bfad51ba5ac

nMinimumChainWork:

• getblockheader chainwork -> 0000000000000000000000000000000000000001128750f82f4c366153a3a030

chainTxData (getchaintxstats 4096 @ 938343):

• nTime: 1772055173
• tx_count: 1315805869
• dTxRate: 5.40111006496122

assumeutxo (dumptxoutset rollback=935000):

• txoutset_hash: e4b90ef9eae834f56c4b64d2d50143cee10ad87994c614d7d04125e2a6025050
• base_hash: 0000000000000000000147034958af1652b2b91bba607beacc5e72a56f0fb5ee
• nchaintx: 1305397408

All values match the PR.

[Retropex]

All value match with my own node.

consensus.nMinimumChainWork -> 0000000000000000000000000000000000000001128750f82f4c366153a3a030
consensus.defaultAssumeValid -> 00000000000000000000ccebd6d74d9194d8dcdc1d177c478e094bfad51ba5ac

hash_serialized -> e4b90ef9eae834f56c4b64d2d50143cee10ad87994c614d7d04125e2a6025050
m_chain_tx_count -> 1305397408
blockhash -> 0000000000000000000147034958af1652b2b91bba607beacc5e72a56f0fb5ee

nTime -> 1772055173
tx_count -> 1315805869
dTxRate -> 5.40111006496122

[Retropex]

Also open to conceptual input on whether to apply the non-mainnet updates

Is there any reason not to apply them?

[luke-jr]

Also open to conceptual input on whether to apply the non-mainnet updates

Is there any reason not to apply them?

Lack of review, at least :)

[Retropex]

Then I will verify all value for other networks and bring a review shortly