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Add types for representing LC Merkle branches #6324

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nflaig opened this issue Jan 18, 2024 · 0 comments
Open

Add types for representing LC Merkle branches #6324

nflaig opened this issue Jan 18, 2024 · 0 comments
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good first issue Issues that are suitable for first-time contributors. help wanted The author indicates that additional help is wanted. meta-feature-request Issues to track feature requests. scope-light-clients All issues regarding light client development.

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nflaig commented Jan 18, 2024 •
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Add named ssz types introduced in ethereum/consensus-specs#3563 for representing LC Merkle branches.

Name SSZ equivalent Description
FinalityBranch Vector[Bytes32, floorlog2(FINALIZED_ROOT_GINDEX)] Merkle branch of finalized_checkpoint.root within BeaconState
CurrentSyncCommitteeBranch Vector[Bytes32, floorlog2(CURRENT_SYNC_COMMITTEE_GINDEX)] Merkle branch of current_sync_committee within BeaconState
NextSyncCommitteeBranch Vector[Bytes32, floorlog2(NEXT_SYNC_COMMITTEE_GINDEX)] Merkle branch of next_sync_committee within BeaconState
ExecutionBranch Vector[Bytes32, floorlog2(EXECUTION_PAYLOAD_GINDEX)] Merkle branch of execution_payload within BeaconBlockBody

The types should be added and exported as part of @lodestar/types package

lodestar/packages/types/src/altair/sszTypes.ts

Line 206 in 8cc5f04

finalityBranch: new VectorCompositeType(Bytes32, FINALIZED_ROOT_DEPTH),

lodestar/packages/types/src/capella/sszTypes.ts

Line 209 in 8cc5f04

executionBranch: new VectorCompositeType(Bytes32, EXECUTION_PAYLOAD_DEPTH),

@nflaig nflaig added good first issue Issues that are suitable for first-time contributors. meta-feature-request Issues to track feature requests. labels Jan 18, 2024
@philknows philknows added the scope-light-clients All issues regarding light client development. label Jan 19, 2024
@philknows philknows added the help wanted The author indicates that additional help is wanted. label Oct 22, 2024
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good first issue Issues that are suitable for first-time contributors. help wanted The author indicates that additional help is wanted. meta-feature-request Issues to track feature requests. scope-light-clients All issues regarding light client development.
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