Polygon has special “Sync-State” transactions added to the blocks https://polygonscan.com/address/0x0000000000000000000000000000000000000000 . Transaction hash returned by eth_getBlockByNumber does not match Keccak-256(RLP(nonce,gasPrice,gasLimit,to,value,data,v,r,s).

Do any of you have any insight on this?.

1 Answer 1


There is at most 1 state-sync transaction in one block. Polygon's geth clone bor computed the hash using the block-number, block-hash.

Concrete algorithm to compute hash is Keccak256(“matic-bor-receipt-” + block-number + block-hash).

Polygon team responded to my question at https://github.com/maticnetwork/bor/issues/411

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