Sign inGet started
Documentation index

getRecentBlockhash

Deprecated: This method is deprecated. Use getLatestBlockhash instead.

Returns a recent blockhash from the ledger and a fee schedule that can be used to compute the cost of submitting a transaction. This method has been deprecated in favor of getLatestBlockhash, which provides the same blockhash along with a lastValidBlockHeight for more reliable transaction expiration handling. All new applications should use getLatestBlockhash instead.

Parameters

#TypeRequiredDescription
1objectNoConfiguration object

Configuration object fields:

FieldTypeDescription
commitmentstringCommitment level: processed, confirmed, or finalized

Response

Returns an RpcResponse object:

FieldTypeDescription
context.slotu64The slot at which the value was read
value.blockhashstringA recent blockhash (base-58)
value.feeCalculator.lamportsPerSignatureu64Fee per signature in lamports

Code Examples

cURL

Terminal
curl http://88.216.36.108:7999 -X POST -H "Content-Type: application/json" -d '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "getRecentBlockhash",
  "params": []
}'

TypeScript

TypeScript
const response = await fetch("http://88.216.36.108:7999", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    jsonrpc: "2.0",
    id: 1,
    method: "getRecentBlockhash",
    params: []
  }),
});
const { result } = await response.json();
console.log("Blockhash:", result.value.blockhash);

Python

Python
import requests

response = requests.post("http://88.216.36.108:7999", json={
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getRecentBlockhash",
    "params": []
})
result = response.json()["result"]
print(f"Blockhash: {result['value']['blockhash']}")

Rust

Rust
use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();
    let res = client.post("http://88.216.36.108:7999")
        .json(&json!({
            "jsonrpc": "2.0",
            "id": 1,
            "method": "getRecentBlockhash",
            "params": []
        }))
        .send().await?
        .text().await?;
    println!("{}", res);
    Ok(())
}

Example Response

JSON
{
  "jsonrpc": "2.0",
  "result": {
    "context": { "slot": 123456789 },
    "value": {
      "blockhash": "GJxqhuxcgfn5Tcj6y3f8X4FeCDd2RQ6SnEMo1AAxrPRZ",
      "feeCalculator": { "lamportsPerSignature": 5000 }
    }
  },
  "id": 1
}