Skip to main content

engine_forkchoiceUpdatedV1

Updates the forkchoice state

Parameter Name​

  • Forkchoice state

Schema​

Object​

title : Forkchoice state object​

properties​

headBlockHash​

title : Head block hash​
type : string​

safeBlockHash​

title : Safe block hash​
type : string​

finalizedBlockHash​

title : Finalized block hash​
type : string​
  • Payload attributes

Schema​

Object​

title : Payload attributes object V1​

properties​

timestamp​

title : Timestamp​
type : string​

prevRandao​

title : Previous randao value​
type : string​

suggestedFeeRecipent​

title : Suggested fee recipent​
type : string​

Example Request​

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "engine_forkchoiceUpdatedV1",
  "params": [
    {
      "headBlockHash": "0x3559e851470f6e7bbed1db474980683e8c315bfce99b2a6ef47c057c04de7858",
      "safeBlockHash": "0x3559e851470f6e7bbed1db474980683e8c315bfce99b2a6ef47c057c04de7858",
      "finalizedBlockHash": "0x3b8fb240d288781d4aac94d3fd16809ee413bc99294a085798a589dae51ddd4a"
    },
    {
      "timestamp": "0x5",
      "prevRandao": "0x0000000000000000000000000000000000000000000000000000000000000000",
      "suggestedFeeRecipient": "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b"
    }
  ]
}

Result​

Name - Response Object Object title - Forkchoice updated response

properties

payloadStatus​

Object

title : Payload status​

properties

status​

title : Payload validation status​
type : string​
description : Set of possible values is restricted to VALID, INVALID, SYNCING​

Enum​

  • VALID

  • INVALID

  • SYNCING

latestValidHash​

title : Payload validation status​
type : string​

validationError​

title : Validation error message​
type : string​

payloadId​

title : Payload id​
type : string​

Errors​

Code - 38002​

Message - Invalid forkchoice state​

Code - 38003​

Message - Invalid payload attributes​


{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "payloadStatus": {
      "status": "VALID",
      "latestValidHash": "0x3559e851470f6e7bbed1db474980683e8c315bfce99b2a6ef47c057c04de7858",
      "validationError": null
    },
    "payloadId": "0x0000000021f32cc1"
  }
}