/eth/v1/validator/attestation_data

Produce an attestation data

Requests the creation of an AttestationData by the beacon node.

If the block specified by the beacon_block_root answer is optimistic (i.e., the attestation attests to a block that has not been fully verified by an execution engine), a 503 error has to be returned.

Example Request and Result for /v1/validator/attestation_data

In this section, we provide an illustrative example of a request made to retrieve details contents using the /v1/validator/attestation_data endpoint. Additionally, we present the resulting response containing information about producing an attestation data.

Parameters

Fields	Type	Description
slot*	string	The slot for which the block should be proposed.
committee_index*	string	The committee index for which an attestation data should be created.

The example in this section uses a non-existing project id.

Make sure you replace it with your Ethereum Holesky Beacon endpoint when issuing the API calls.

Don't have a project id? Here's a straightforward guide on how to obtain one!

Produce an attestation data

GET https://eth-holesky-beacon.blastapi.io/<project-id>/eth/v3/validator/blocks/{slot}

Query Parameters

Name	Type	Description
slot*	string	1
committee_index*	string	1

200: OK Expand for a detailed response example

{
  "data": {
    "slot": "1",
    "index": "1",
    "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
    "source": {
      "epoch": "1",
      "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
    },
    "target": {
      "epoch": "1",
      "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
    }
  }
}

Curl Request example

curl -X 'GET' \
  'https://eth-holesky-beacon.blastapi.io/<project-id>/eth/v1/validator/attestation_data?slot=1&committee_index=1' \
  -H 'accept: application/json'