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Signed-off-by: Yacov Manevich <yacov.manevich@avalabs.org>
Also self-sign during aggregation - Introduces ApprovalStore (msm/approvals.go) — an in-memory store of validator approvals for epoch transitions, keyed by (NodeID, PChainHeight). It verifies BLS signatures on ingest, deduplicates by timestamp (newer wins, older is dropped), and prunes per-node entries to at most len(validators) by evicting the oldest timestamp. - Adds Timestamp to ValidatorSetApproval (msm/encoding.go) so the store can order/evict approvals deterministically. - computeNewApprovals (msm/msm.go) now optimistically self-signs the next epoch's P-chain reference height each round and appends its own ValidatorSetApproval to the peer set since the store deduplicates it later. Signed-off-by: Yacov Manevich <yacov.manevich@avalabs.org>
Signed-off-by: Yacov Manevich <yacov.manevich@avalabs.org>
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