getLatestBlockhash

Returns the latest block hash.

Parameters

• config: (object) [optional] - Configuration object with the following options:
  • commitment: (string) [optional] - The commitment level to use for the query. The default is finalized. Possible values are:
    • finalized - Queries the most recent block confirmed by a super majority of the cluster as having reached maximum lockout, meaning the cluster has recognized this block as finalized.
    • confirmed - Queries the most recent block that has been voted on by a super majority of the cluster.
    • processed - Queries its most recent block. The block may still be skipped by the cluster.
  • minContextSlot: [optional] - The minimum slot to use for the query.

Returns

result - An object with the following fields:

• context - An object containing the following keys:
  • slot - The slot number of the block that was queried.
  • apiVersion - The API version used for the query.
• value - An object containing the following keys:
  • blockhash - The base58 encoded block hash.
  • lastValidBlockHeight - The last block height at which the block hash will be valid.

Request

• curl

curl https://solana-mainnet.infura.io/v3/<YOUR-API-KEY> \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1, "method": "getLatestBlockhash", "params": []}'

Response

• JSON

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "apiVersion": "2.2.3",
      "slot": 372758352
    },
    "value": {
      "blockhash": "4zuGA4EyEjaN25qMVnwwij4UMRWcmEpFn1txrzMMk5xw",
      "lastValidBlockHeight": 360735720
    }
  },
  "id": 1
}