---
title: "GetBeaconBlocksAttestationsByBlockId"
method: GET
path: "/{apiKey}/eth/v1/beacon/blocks/{blockId}/attestations"
---

# GetBeaconBlocksAttestationsByBlockId

`GET /{apiKey}/eth/v1/beacon/blocks/{blockId}/attestations`

Get block attestations. Retrieves attestation included in requested block.

## Path parameters

- `apiKey` string, required — <style> .custom-style { color: #048FF4; } </style> For higher throughput, please <span class="custom-style"><a href="../docs/quick-start-guide#-creating-your-api-key-on-the-zan-platform" target="_blank">create your own API key</a></span>.
- `blockId` string, required

## Response `200`

Block attestations.

- object
  - `execution_optimistic` boolean, required — True if the response references an unverified execution payload. Optimistic information may be invalidated at a later time. If the field is not present, assume the False value.
  - `finalized` boolean, required — True if the response references the finalized history of the chain, as determined by fork choice. If the field is not present, additional calls are necessary to compare the epoch of the requested information with the finalized checkpoint.
  - `data` object[], required
    - `aggregation_bits` string, hex, required — Attester aggregation bits.
    - `signature` string, hex, required — BLS aggregate signature.
    - `data` object, required — The [`AttestationData`](https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/beacon-chain.md#attestationdata) object from the CL spec.
      - `slot` string, required
      - `index` string, required
      - `beacon_block_root` string, hex, required — LMD GHOST vote.
      - `source` object, required — The [`Checkpoint`](https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/beacon-chain.md#checkpoint
        - `epoch` string, required
        - `root` string, hex, required
      - `target` object, required — The [`Checkpoint`](https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/beacon-chain.md#checkpoint
        - `epoch` string, required
        - `root` string, hex, required

---

[API](https://skmtc.net/zan/apis/zan-getnftmetadata.md) · [All operations](https://skmtc.net/zan/apis/zan-getnftmetadata/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/zan/zan-getnftmetadata/versions/be8fa2338895/schema)