getRecentBlockhash RPC Method

Description

Returns a recent block hash from the ledger, and a fee schedule that can be used to compute the cost of submitting a transaction using it.

Parameters

1. object (array, optional) - The configuration object with the following fields:
   • commitment (string, optional) - The level of commitment required for the query. Options:
     • finalized - The node will query the most recent block confirmed by the supermajority of the cluster as having reached maximum lockout, meaning the cluster has recognized this block as finalized.
     • confirmed - The node will query the most recent block that has been voted on by the supermajority of the cluster.
     • processed - The node will query its most recent block. Note that the block may not be complete.

Returns

• result - An RpcResponse JSON object with the following fields:
  • context - Metadata about the current state of the Solana network at the time of processing:
    • apiVersion - The version number.
    • slot - The current slot in the Solana cluster when the request was processed.
  • value - An object containing:
    • blockhash - The blockhash as a base-58 encoded string, used to calculate transaction fees.
    • feeCalculator - A JSON object representing the fee calculator:
      • lamportsPerSignature - The number of lamports required to process each signature in the transaction, encoded as a u64 integer.

Code Examples

curl "https://rpc-mainnet.solanatracker.io/?api_key=YOUR_API_KEY_HERE" \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","id":1, "method":"getRecentBlockhash"}'