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engine_forkchoiceUpdatedV1

Updates the forkchoice state

Parameters (by position)​

Forkchoice state object required

Forkchoice state object V1

Show Forkchoice state object

Forkchoice state fields​

  • headBlockHash string

    Head block hash

    Match pattern: ^0x[0-9a-f]{64}$

  • safeBlockHash string

    Safe block hash

    Match pattern: ^0x[0-9a-f]{64}$

  • finalizedBlockHash string

    Finalized block hash

    Match pattern: ^0x[0-9a-f]{64}$

  • additionalProperties true

Payload attributes object

Payload attributes object V1

Show Payload attributes object

Payload attributes fields​

  • timestamp string

    Timestamp

    Match pattern: ^0x(0|[1-9a-f][0-9a-f]{0,15})$

  • prevRandao string

    Previous randao value

    Match pattern: ^0x[0-9a-f]{64}$

  • suggestedFeeRecipient string

    Suggested fee recipient

    Match pattern: ^0x[0-9a-fA-F]{40}$

  • additionalProperties true

Result​

Response object object

Forkchoice updated response

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Response object fields​

  • payloadStatus object required

    Payload status

    Show payloadStatus object

    payloadStatus fields​

    • status string required

      Set of possible values is restricted to VALID, INVALID, SYNCING

      Allowed values: VALID INVALID SYNCING

    • latestValidHash string

      The hash of the most recent valid block

      Match pattern: ^0x[0-9a-f]{64}$

    • validationError string

      Validation error message

    • additionalProperties true

  • payloadId string

    Payload id

    Match pattern: ^0x[0-9a-f]{16}$

  • additionalProperties true

Errors​

Error code: -38002

  • code

    -38002

  • message

    Invalid forkchoice state

Error code: -38003

  • code

    -38003

  • message

    Invalid payload attributes

Examples​

engine_forkchoiceUpdatedV1 example

Request​

{
  "params": [
    {
      "headBlockHash": "0x3559e851470f6e7bbed1db474980683e8c315bfce99b2a6ef47c057c04de7858",
      "safeBlockHash": "0x3559e851470f6e7bbed1db474980683e8c315bfce99b2a6ef47c057c04de7858",
      "finalizedBlockHash": "0x3b8fb240d288781d4aac94d3fd16809ee413bc99294a085798a589dae51ddd4a"
    },
    {
      "timestamp": "0x5",
      "prevRandao": "0x0000000000000000000000000000000000000000000000000000000000000000",
      "suggestedFeeRecipient": "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b"
    }
  ]
}

Response​

{
  "payloadStatus": {
    "status": "VALID",
    "latestValidHash": "0x3559e851470f6e7bbed1db474980683e8c315bfce99b2a6ef47c057c04de7858",
    "validationError": null
  },
  "payloadId": "0x0000000021f32cc1"
}
Request