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Add `prev_blockhash` validation to `CheckPoint` - #2115

Merged

evanlinjin merged 15 commits into

bitcoindevkit:masterfrom

evanlinjin:cp_entry

Apr 22, 2026

Merged

Add `prev_blockhash` validation to `CheckPoint`#2115
evanlinjin merged 15 commits into
bitcoindevkit:masterfrom
evanlinjin:cp_entry

Commits on Apr 22, 2026
- feat(core): Add `prev_blockhash` method to `ToBlockHash` trait
  evanlinjin
  committed
  d4bdff0
- feat(core): Initial work on `CheckPointEntry`
  evanlinjin
  committed
  68d1ef4
- fix(core): `push` now errors on `prev_blockhash` mismatch
  evanlinjin
  committed
  046a771
- fix(core): `Checkpoint::insert` now evicts on `prev_blockhash` mismatch
  
  evanlinjin
  and
  ValuedMammal
  committed
  f10ba0e
- fix(chain): `merge_chains` now takes account of `prev_blockhash`es
  evanlinjin
  committed
  c314b25
- test(chain): make `TestLocalChain` generic and add `prev_blockhash` test
  
  evanlinjin
  and
  claude
  committed
  3df0609
- test(chain): Test `apply_update` with a single `CheckPoint<Header>`
  
  ValuedMammal
  authored and
  evanlinjin
  committed
  9971fda
- test(core): add tests for CheckPoint::push and insert methods
  
  committed
  19b9006
- feat(chain)!: Relax the generic parameter for `LocalChain<D>`
  evanlinjin
  committed
  bf6541b
- feat(chain)!: Add `ApplyBlockError` for `prev_blockhash` validation
  
  evanlinjin
  and
  claude
  committed
  3ef6ed8
- docs(core): Add module-level docs for `checkpoint_entry`
  
  evanlinjin
  and
  claude
  committed
  9c0453c
- test(core): address review feedback on checkpoint tests
  
  evanlinjin
  and
  claude
  committed
  d8cb41f
- fix(chain)!: make genesis immutable in `merge_chains`
  
  evanlinjin
  and
  claude
  committed
  ef35b19
- docs(core): address review feedback on docs and tests
  
  evanlinjin
  and
  claude
  committed
  031b30f
- docs: address review feedback on `prev_blockhash` validation
  
  evanlinjin
  and
  claude
  committed
  c486ba7

Commits

Commits on Apr 22, 2026