/v1/beacon/headers | Alchemy Docs

curl https://eth-mainnetbeacon.g.alchemy.com/v2/docs-demo/eth/v1/beacon/headers

{
  "execution_optimistic": false,
  "finalized": false,
  "data": [
    {
      "root": "0x95656528b8dbed879305ffa67ed688f8e262b2dfa5f620e384056f49dec95267",
      "canonical": true,
      "header": {
        "message": {
          "slot": "12304896",
          "proposer_index": "1093008",
          "parent_root": "0x3590c9b1a918586a2dabde886abea7f26cfa3a11683be1ab73283e6af70733ba",
          "state_root": "0xf5bcaecf4eeaf601cdce952429a40fbe1b3cc24c25baba21f5eed360f6e636f2",
          "body_root": "0xb2d5058e1f4bc888fa4d6a859a88c975bee5d853aec239a2e67ecf92c3b2d6c5"
        },
        "signature": "0x8c5a8efa6e472c358dd7024fae6f6569cd60af754591ddc78ef9e9db287aa68cb7d38c171b96ae11d1b033c1f4921151021bc1d1f4541a5528d15e926d0ca8385286ca49670adcd0e8f26ec231895dc32d7146db55360e0f1ed5ab7757e34258"
      }
    }
  ]
}

Retrieves block headers matching the given query. By default, it will fetch the current head slot blocks.

Query parameters

slotstringOptional

Slot number. If provided, returns headers for this slot.

parent_rootstringOptionalformat: "hex"

Parent root hash to filter block headers by.

Response

Successfully retrieved block headers.

execution_optimisticboolean or null

Whether the execution payload is optimistic.

finalizedboolean or null

Whether the block is finalized.

datalist of objects or null

List of block headers.