---
title: "Publish multiple contribution and proofs"
method: POST
path: "/eth/v1/validator/contribution_and_proofs"
tags: ["ValidatorRequiredApi", "Validator"]
---

# Publish multiple contribution and proofs

`POST /eth/v1/validator/contribution_and_proofs`

## Request

- Base URL: `eth2-beacon-mainnet.nodereal.io/v1/api_key` (relative, and the document’s source URL is not known)
- URL: `eth2-beacon-mainnet.nodereal.io/v1/api_key/eth/v1/validator/contribution_and_proofs`
- Auth: none declared

Publish multiple signed sync committee contribution and proofs

## Request body

- object[]
  - `message` object
    - `aggregator_index` string: Index of validator in validator registry.
    - `selection_proof` string
    - `contribution` object
      - `slot` string: The slot at which the validator is providing a sync committee contribution.
      - `beacon_block_root` string: Block root for this contribution.
      - `subcommittee_index` string: The index of the subcommittee that the contribution pertains to.
      - `aggregation_bits` string: A bit is set if a signature from the validator at the corresponding index in the subcommittee is present in the aggregate `signature`.
      - `signature` string: Signature by the validator(s) over the block root of `slot`
  - `signature` string

## Response `200`

Successful response

## Other responses

- `400`: Invalid request syntax.
- `500`: Beacon node internal error.

---

[API](https://skmtc.dev/nodereal/apis/eth-beacon-node-api.md) - [All operations](https://skmtc.dev/nodereal/apis/eth-beacon-node-api/llms.txt) - [OpenAPI document](https://skmtc.dev/nodereal/apis/eth-beacon-node-api/revisions/1878ea8657a1?raw)