eth_getHeaderByHash

POST

/{apiKey}

Returns the block header identified by the given block hash. Structurally identical to eth_getBlockByHash but omits body-level fields (size, transactions, uncles, withdrawals), making it cheaper to fetch when only consensus fields are needed (e.g., chain-tip anchoring for light clients or stateless validators).

Path Parameters

stringrequireddefaults to docs-demo

For higher throughput, create your own API key

Request

stringformat: "^0x[0-9a-f]{64}$"required

The 32-byte hash of the block to retrieve.

Responses

200

The block header object, or null if no block with the given hash is known.

POST/v2/{apiKey}

curl --request POST \  --url https://megaeth-mainnet.g.alchemy.com/v2/docs-demo \  --header 'Content-Type: application/json' \  --data '{  "jsonrpc": "2.0",  "id": 1,  "method": "eth_getHeaderByHash",  "params": [    "0xec3c34973b6ba593643668f2279a715e241fc0ffe95f593b2d49fda556f1c512"  ]}'

200Success

{  "jsonrpc": "2.0",  "id": 1,  "result": {    "hash": "0xec3c34973b6ba593643668f2279a715e241fc0ffe95f593b2d49fda556f1c512",    "parentHash": "0x85b055abc1eab8d988d160dd8ae9a2c07d6548f9609746348c53077cebd80262",    "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",    "miner": "0x4200000000000000000000000000000000000011",    "stateRoot": "0x80d2e1ad2720c9f9f3fd25a7312e0c9e158c792a37f0ce37f7f6ba2d5a8cfa04",    "transactionsRoot": "0x92e3342c97eba7aaf7da9d96755ddda67c00574b4d90518a3ab051e5d05d7886",    "receiptsRoot": "0x42d0fd6b9b85b2da166fb9cf8b73d6f0325b14d676a2913fd7e3c8876d7430b7",    "logsBloom": "0x0000000100000040001000000000000000200000020080008000000000200500000002000200008000000001000000000000000020000800000040000840008000000000000000000000010840040010001000000000000000010000000100000000000002000000000000000000880080004400000000000004001000000000000000000068000000000001000000001000000000004102000000000040000010080000000000000200000000000004402000402000000000008002000201000000000200a2000000000000000440000000000000000000400000000000a0000400000000008000000000000000000000000080080440000000000000000000",    "difficulty": "0x0",    "number": "0x14855a6",    "gasLimit": "0x2540be400",    "gasUsed": "0x855371",    "timestamp": "0x6a5a7b79",    "extraData": "0x00000000fa00000001",    "mixHash": "0xcb1f34415ed865cc2a378d1dd767225c8f594560dd39fbf92c29aadec3a4ab78",    "nonce": "0x0000000000000000",    "baseFeePerGas": "0xf4240",    "withdrawalsRoot": "0xcd9d73e1502e68817b06212100d7529fc71d1e8741d712ef8e68310e3600cc26",    "blobGasUsed": "0x0",    "excessBlobGas": "0x0",    "parentBeaconBlockRoot": "0x602625e5c228d3ea1c71f2c9a596ce93c7c9a9e2f2a1c733c832e3a0369cb31c",    "requestsHash": "0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"  }}

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eth_getHeaderByHash

Path Parameters

apiKey

Request

Block hash

Responses

200