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Gnosis Beacon — Beacon (1/3)

API reference for Gnosis Beacon. All methods ->

Part 1 of 3: 1 · 2 · 3

Beacon

GET /eth/v1/beacon/genesis

Retrieves the details of the chain's genesis.

Returns the details of the chain's genesis which can be used to identify chain.

Parameters

None.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/genesis" \
-H "Accept: application/json"

Response example

{
"data": {
"genesis_time": "1606824023",
"genesis_validators_root": "0x4b363db94e286120d76eb905340fdd4e54bfe9f06bf33ff6cf5ad27f511bfe95",
"genesis_fork_version": "0x00000000"
}
}

GET /eth/v1/beacon/states/{state_id}/root

Retrieves the state SSZ HashTreeRoot.

Calculates HashTreeRoot for state with given 'stateId'. If stateId is root, same value will be returned.

Parameters

  • state_id (string; path; required): state identifier. Can be one of: head (canonical head in node's view), genesis, finalized, justified, <slot>, <hex encoded stateRoot with 0x prefix>.
    Example: head.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/state/{state_id}/root" \
-H "Accept: application/json"

Request example

{
"execution_optimistic": false,
"data": {
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
}
}

GET /eth/v1/beacon/states/{state_id}/fork

Retrieves the Fork object for a requested state.

Retrieves the Fork object for state with given 'stateId'.

Parameters

  • state_id (string; path; required): state identifier. Can be one of: head (canonical head in node's view), genesis, finalized, justified, <slot>, <hex encoded stateRoot with 0x prefix>.
    Example: head.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/state/{state_id}/fork" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": {
"previous_version": "0x00000000",
"current_version": "0x00000000",
"epoch": "1"
}
}

GET /eth/v1/beacon/states/{state_id}/finality_checkpoints

Retrieves state finality checkpoints.

Returns finality checkpoints for state with given 'stateId'. In case finality is not yet achieved, checkpoint should return epoch 0 and ZERO_HASH as root.

Parameters

  • state_id (string; path; required): state identifier. Can be one of: head (canonical head in node's view), genesis, finalized, justified, <slot>, <hex encoded stateRoot with 0x prefix>.
    Example: head.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/states/{state_id}/finality_checkpoints" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": {
"previous_justified": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"current_justified": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"finalized": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
}
}
}

GET /eth/v1/beacon/states/{state_id}/validators

Retrieves validators from state.

Returns filterable list of validators with their balance, status, and index.

Information will be returned for all indices or public key that match known validators. If an index or public key does not match any known validator, no information will be returned but this will not cause an error. There are no guarantees for the returned data in terms of ordering; both the index and public key are returned for each validator, and can be used to confirm for which inputs a response has been returned.

Parameters

  • state_id (string; path; required): state identifier. Can be one of: head (canonical head in node's view), genesis, finalized, justified, <slot>, <hex encoded stateRoot with 0x prefix>.
    Example: head.
  • id (array[string]; query): either a hex encoded public key (any bytes48 with 0x prefix) or validator index.
  • status (array; query): a validator status specification; Available values : pending_initialized, pending_queued, active_ongoing, active_exiting, active_slashed, exited_unslashed, exited_slashed, withdrawal_possible, withdrawal_done, active, pending, exited, withdrawal

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/states/{state_id}/validators" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": [
{
"index": "1",
"balance": "1",
"status": "active_ongoing",
"validator": {
"pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
"withdrawal_credentials": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"effective_balance": "1",
"slashed": false,
"activation_eligibility_epoch": "1",
"activation_epoch": "1",
"exit_epoch": "1",
"withdrawable_epoch": "1"
}
}
]
}

GET /eth/v1/beacon/states/{state_id}/validators/{validator_id}

Retrieves the validator from state by ID.

Returns validator specified by state and id or public key along with status and balance.

Parameters

  • state_id (string; path; required): state identifier. Can be one of: head (canonical head in node's view), genesis, finalized, justified, <slot>, <hex encoded stateRoot with 0x prefix>.
    Example: head.
  • validator_id (string; path; required): either a hex encoded public key (any bytes48 with 0x prefix) or validator index.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/states/{state_id}/validators/{validator_id}" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": {
"index": "1",
"balance": "1",
"status": "active_ongoing",
"validator": {
"pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
"withdrawal_credentials": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"effective_balance": "1",
"slashed": false,
"activation_eligibility_epoch": "1",
"activation_epoch": "1",
"exit_epoch": "1",
"withdrawable_epoch": "1"
}
}
}

GET /eth/v1/beacon/states/{state_id}/validator_balances

Retrieves validator balances from state.

Returns filterable list of validators balances.

Balances will be returned for all indices or public key that match known validators. If an index or public key does not match any known validator, no balance will be returned but this will not cause an error. There are no guarantees for the returned data in terms of ordering; the index and is returned for each balance, and can be used to confirm for which inputs a response has been returned.

Parameters

  • state_id (string; path; required): state identifier. Can be one of: head (canonical head in node's view), genesis, finalized, justified, <slot>, <hex encoded stateRoot with 0x prefix>.
    Example: head.
  • id (array[string]; query): either a hex encoded public key (any bytes48 with 0x prefix) or validator index.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/states/{state_id}/validator_balances" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": [
{
"index": "1",
"balance": "1"
}
]
}

GET /eth/v1/beacon/states/{state_id}/committees

Retrieves all committees for a state.

Retrieves the committees for the given state.

Parameters

  • state_id (string; path; required): state identifier. Can be one of: head (canonical head in node's view), genesis, finalized, justified, <slot>, <hex encoded stateRoot with 0x prefix>.
    Example: head.
  • epoch (string; query): fetches committees for the given epoch; if not present then the committees for the epoch of the state will be obtained.
  • index (string; query): restricts returned values to those matching the supplied committee index.
  • slot (string; query): restricts returned values to those matching the supplied slot.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/states/{state_id}/committees" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": [
{
"index": "1",
"slot": "1",
"validators": [
"1"
]
}
]
}

GET /eth/v1/beacon/states/{state_id}/sync_committees

Retrieves sync committees for a state.

Retrieves the sync committees for the given state.

Parameters

  • state_id (string; path; required): state identifier. Can be one of: head (canonical head in node's view), genesis, finalized, justified, <slot>, <hex encoded stateRoot with 0x prefix>.
    Example: head.
  • epoch (string; query): fetches sync committees for the given epoch; if not present then the sync committees for the epoch of the state will be obtained.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/states/{state_id}/sync_committees" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": {
"validators": [
"1"
],
"validator_aggregates": [
[
"1"
]
]
}
}

GET /eth/v1/beacon/headers

Retrieves block headers.

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

Parameters

  • slot (string; query): a slot.
  • parent_root (string; query): a parent root.

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/headers" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": [
{
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"canonical": true,
"header": {
"message": {
"slot": "1",
"proposer_index": "1",
"parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
}
}
]
}

GET /eth/v1/beacon/headers/{block_id}

Retrieves a block header.

Retrieves a block header for a given block ID.

Parameters

  • block_id (string; path; required): a block identifier. Can be one of: head (canonical head in node's view), genesis, finalized, <slot>, <hex encoded blockRoot with 0x prefix>.
    Example : head

Request example

curl -X GET "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/headers/{block_id}" \
-H "Accept: application/json"

Response example

{
"execution_optimistic": false,
"data": {
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"canonical": true,
"header": {
"message": {
"slot": "1",
"proposer_index": "1",
"parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
}
}
}

POST /eth/v1/beacon/blocks

Publishes a signed block.

Instructs the beacon node to broadcast a newly signed beacon block to the beacon network, to be included in the beacon chain. The beacon node is not required to validate the signed BeaconBlock, and a successful response (20X) only indicates that the broadcast has been successful. The beacon node is expected to integrate the new block into its state, and therefore validate the block internally, however blocks which fail the validation are still broadcast but a different status code is returned (202).

Parameters

  • Eth-Consensus-Version (header): a version of the block being submitted, if using SSZ encoding. Available values : phase0, altair, bellatrix.
  • <request body> (required): the SignedBeaconBlock object composed of the BeaconBlock object (produced by beacon node) and validator signature.
{
"message": {
"slot": "1",
"proposer_index": "1",
"parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"body": {
"randao_reveal": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
"eth1_data": {
"deposit_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"deposit_count": "1",
"block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"graffiti": "0xdEFeAFdc312b725d00Dd16b4A627fCBfa6B8aAF1d8AF7bCfd82bbFca700A0645",
"proposer_slashings": [
{
"signed_header_1": {
"message": {
"slot": "1",
"proposer_index": "1",
"parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
},
"signed_header_2": {
"message": {
"slot": "1",
"proposer_index": "1",
"parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
}
}
],
"attester_slashings": [
{
"attestation_1": {
"attesting_indices": [
"1"
],
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
"data": {
"slot": "1",
"index": "1",
"beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"source": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"target": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
}
}
},
"attestation_2": {
"attesting_indices": [
"1"
],
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
"data": {
"slot": "1",
"index": "1",
"beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"source": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"target": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
}
}
}
}
],
"attestations": [
{
"aggregation_bits": "0x01",
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
"data": {
"slot": "1",
"index": "1",
"beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"source": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
},
"target": {
"epoch": "1",
"root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
}
}
}
],
"deposits": [
{
"proof": [
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
],
"data": {
"pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
"withdrawal_credentials": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
"amount": "1",
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
}
}
],
"voluntary_exits": [
{
"message": {
"epoch": "1",
"validator_index": "1"
},
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
}
]
}
},
"signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
}

Request example

curl -X POST "https://rpc.ankr.com/premium-http/gnosis_beacon/YOUR_ANKR_API_KEY/eth/v1/beacon/blocks" \
-H "Eth-Consensus-Version: bellatrix" \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-d '{your_request_body}'

Responses

  • Code 200: The block was validated successfully and has been broadcast. It has also been integrated into the beacon node's database.

  • Code 202: The block failed validation, but was successfully broadcast anyway. It was not integrated into the beacon node's database.

  • Code 400: The SignedBeaconBlock object is invalid.

{
"code": 400,
"message": "Invalid block: missing signature"
}
  • Code 500: Beacon node internal error.
{
"code": 500,
"message": "Internal server error"
}
  • Code 503: Beacon node is currently syncing, try again later.
{
"code": 503,
"message": "Beacon node is currently syncing and not serving request on that endpoint"
}