GET
https://ton-mainnet.core.chainstack.com/f2a2411bce1e54a2658f2710cd7969c3/api/v2
/
getMasterchainBlockSignatures
curl --request GET \
  --url https://ton-mainnet.core.chainstack.com/f2a2411bce1e54a2658f2710cd7969c3/api/v2/getMasterchainBlockSignatures
{
  "signatures": [
    {
      "node_id": "<string>",
      "r": "<string>",
      "s": "<string>"
    }
  ],
  "validator_set_hash": "<string>",
  "catchain_seqno": 123
}

The getMasterchainBlockSignatures method retrieves the signatures of a specific masterchain block in the TON blockchain. This method is crucial for verifying the authenticity and consensus of masterchain blocks.

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​
Parameters

  • seqno (integer, required) — The sequence number of the masterchain block for which to retrieve signatures. Example: 39064874.

​
JSON-RPC example

Shell
curl -X POST \

  'https://ton-mainnet.core.chainstack.com/f2a2411bce1e54a2658f2710cd7969c3/api/v2/jsonRPC' \

  -H 'Content-Type: application/json' \

  -d '{

    "jsonrpc": "2.0",

    "id": 1,

    "method": "getMasterchainBlockSignatures",

    "params": {

      "seqno": 39064874

    }

  }'

​
Response

  • signatures (array of objects) — An array of signature objects, each containing:
    • node_id (string) — The ID of the validator node that provided the signature.
    • r (string) — The ‘r’ component of the signature.
    • s (string) — The ‘s’ component of the signature.
  • validator_set_hash (string) — The hash of the validator set that signed this block.
  • catchain_seqno (integer) — The sequence number in the catchain (consensus protocol).

​
Use case

A possible use case for the getMasterchainBlockSignatures method in TON is for applications or services that need to verify the authenticity and consensus of masterchain blocks. This method can be used to:

  1. Implement custom block validation logic in light clients or explorers.
  2. Verify the consensus reached for a specific block by checking the signatures.
  3. Analyze validator participation and performance in block signing.
  4. Provide transparency and auditability for critical blockchain operations.

Query Parameters

​
seqno
integer
default:39064874
required

The sequence number of the masterchain block

Response

200 - application/json

Signatures of the specified masterchain block

The response is of type object.