queryLedgerState_tip - Cardano

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

This method returns the ledger tip: the slot and block hash of the most recent block reflected in the ledger state.

Parameters

This method does not require parameters.

Request

cURL

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

JavaScript

example.js

const response = await fetch(
    'https://go.getblock.io/<ACCESS-TOKEN>/',
    {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({"jsonrpc": "2.0", "method": "queryLedgerState/tip", "id": "getblock.io"})
    }
);
console.log(await response.json());

Python

example.py

import requests

response = requests.post(
    'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={"jsonrpc": "2.0", "method": "queryLedgerState/tip", "id": "getblock.io"}
)

print(response.json())

Response

{
    "jsonrpc": "2.0",
    "method": "queryLedgerState/tip",
    "result": {
        "slot": 123456789,
        "id": "3e6f2d8c9a1b4e7f0c2d5a8b1e4f7a0c3d6b9e2f5a8c1d4e7b0f3a6c9d2e5b8f"
    },
    "id": "getblock.io"
}

Response Parameters

Field	Type	Description
slot	integer	Absolute slot number of the ledger tip
id	string	Block hash of the ledger tip

Use Cases

• State Anchoring: Record the point a ledger query was answered against

• Consistency Checks: Confirm several queries share the same ledger tip

• Sync Verification: Compare ledger tip against the network tip

• Snapshotting: Pin analysis to a specific ledger point

Error Handling

Error Code	Message	Description
-32602	Invalid params	A required field is missing or has the wrong type
-32000	Query unavailable	The query is not available in the current ledger era
-32603	Internal error	The node failed to answer the query