consensus_getLatest - Tempo

Example code for the consensus_getLatest JSON-RPC method. Complete guide on how to use consensus_getLatest JSON-RPC in GetBlock Web3 documentation.

Returns the current consensus state snapshot: the latest finalized block and (if ahead) the latest notarized block. Useful for monitoring consensus liveness and catching reorgs at the consensus layer (though Tempo's deterministic finality means notarized → finalized is fast and reliable).

VALIDATOR-NODE-ONLY METHOD. This method is part of the consensus_* namespace and is only available on Tempo validator nodes. It is not available on shared RPC infrastructure such as GetBlock's standard shared endpoints. Calling this method against a non-validator node returns -32601 Method not found. If you need access, contact GetBlock for dedicated validator node access.

Parameters

None

Request Example

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "consensus_getLatest",
    "params": [],
    "id": "getblock.io"
}'

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "consensus_getLatest",
    "params": [],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

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

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "consensus_getLatest",
        "params": [],
        "id": "getblock.io"
});

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "finalized": {
            "epoch": 42,
            "view": 387213,
            "digest": "0x6baa8fa86b9a7e5d3f1c8a4b6e9d2f5a8c3e7b1d4f9a6c2e5b8d3f7a1c4e9b2d",
            "certificate": "0xc4b5a6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6",
            "block": {
                "number": "0x9c40",
                "hash": "0x6baa8fa86b9a7e5d3f1c8a4b6e9d2f5a8c3e7b1d4f9a6c2e5b8d3f7a1c4e9b2d"
            }
        },
        "notarized": {
            "epoch": 42,
            "view": 387214,
            "digest": "0x4f3a1d6e8c2b9a7e5d3f1c8a4b6e9d2f5a8c3e7b1d4f9a6c2e5b8d3f7a1c4e9b",
            "certificate": "0xa1b2c3d4...",
            "block": {
                "number": "0x9c41",
                "hash": "0x4f3a1d6e8c2b9a7e..."
            }
        }
    }
}

Response Parameters

Field

Type

Description

result.finalized

CertifiedBlock | null

Latest finalized block

result.notarized

CertifiedBlock | null

Latest notarized block, if ahead of finalized; null otherwise

Use Cases

Validator-side consensus liveness monitoring
Detecting notarized-but-not-yet-finalized blocks for low-latency UX
Building consensus-layer dashboards

Error Handling

Status Code

Error Message

Cause

403

Forbidden

Missing or invalid <ACCESS-TOKEN>

-32602

Invalid params

Request parameters are missing or malformed

-32601

Method not found

Method does not exist or is not enabled on this node

429

Too Many Requests

Rate limit exceeded for your plan

-32601

Method not found

This is a validator-only method — not exposed on shared infrastructure

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Last updated 1 month ago

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