getLatestBlockhash RPC Method

Returns the latest blockhash

Version Restriction

This method is only available in solana-core v1.9 or newer. Please use getRecentBlockhash for solana-core v1.8 and below.

Parameters

object optional

Configuration object containing the following fields:

commitment string optional

minContextSlot number optional

The minimum slot that the request can be evaluated at

Result

RpcResponse<object> - RpcResponse JSON object with value field set to a JSON object including:

blockhash: <string> - a Hash as base-58 encoded string
lastValidBlockHeight: <u64> - last block height at which the blockhash will be valid

Code sample

curl https://api.devnet.solana.com -s -X POST -H "Content-Type: application/json" -d '
  {
    "id":1,
    "jsonrpc":"2.0",
    "method":"getLatestBlockhash",
    "params":[
      {
        "commitment":"processed"
      }
    ]
  }
'

Response

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "slot": 2792
    },
    "value": {
      "blockhash": "EkSnNWid2cvwEVnVx9aBqawnmiCNiDgp3gUdkDPTKN1N",
      "lastValidBlockHeight": 3090
    }
  },
  "id": 1
}