CreateBloom creates a new bloom filter from a set of receipts.

deriveChainId derives the chain id from the given v parameter.

ExtractIstanbulExtra extracts all values of the IstanbulExtra from the header.

Hex2Bytes returns the bytes represented by the hexadecimal string str.

IstanbulFilteredHeader returns a filtered header which some information (like seal, committed seals) are clean to fulfill the Istanbul hash rules.

EmptyRootHash is the root when there are no transactions.

EmptyUncleHash is the root when there are no uncles.

ErrInvalidIstanbulHeaderExtra is returned if the length of extra-data is less than 32 bytes.

IstanbulDigest represents a hash of "Istanbul practical byzantine fault tolerance" to identify whether the block is from Istanbul consensus engine.

Fixed number of extra-data bytes reserved for validator seal.

Fixed number of extra-data bytes reserved for validator vanity.

Header represents a block header in the Ethereum blockchain.

Big marshals/unmarshals as a JSON string with 0x prefix.

Uint64 marshals/unmarshals as a JSON string with 0x prefix.