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-rw-r--r--consensus/consensus.go3
1 files changed, 3 insertions, 0 deletions
diff --git a/consensus/consensus.go b/consensus/consensus.go
index e318e57c0..c199e627f 100644
--- a/consensus/consensus.go
+++ b/consensus/consensus.go
@@ -40,6 +40,9 @@ type ChainReader interface {
// GetHeaderByNumber retrieves a block header from the database by number.
GetHeaderByNumber(number uint64) *types.Header
+ // GetHeaderByHash retrieves a block header from the database by its hash.
+ GetHeaderByHash(hash common.Hash) *types.Header
+
// GetBlock retrieves a block from the database by hash and number.
GetBlock(hash common.Hash, number uint64) *types.Block
}