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: Note: The following is an excerpt from the official Ethereum site. It is provided here as a connivence and is not authoritative. Refer to the original document as the authoritative reference.
| Title | Add `blockHash` to JSON-RPC methods which accept a default block parameter |
| Author | Charles Cooper |
| Status | Draft |
| Created | 2019-04-01 |
| Description | http://eips.ethereum.org/EIPS/eip-1898 |
| Specification | http://eips.ethereum.org/EIPS/eip-1898#Specification |
| Category | Interface |