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TON CenterV2Blocks

applications/api/toncenter/v2/blocks/get-block-header

GET
/api/v2/getBlockHeader

Authorization

X-API-Key<token>

API key header of the form X-API-Key: <token>, where <token> is the API key. Requests without a key are limited to 1 RPS. Refer to the authentication guide for details.

In: header

Query Parameters

workchain*integer

The workchain to query. Use -1 for masterchain (validators, system contracts, config) or 0 for basechain (regular accounts and contracts). Most user transactions happen on workchain 0.

Formatint32
shard*string

The shard identifier. Masterchain always uses -9223372036854775808. For basechain, shards split and merge dynamically. Use the shards endpoint to discover current shard configuration.

seqno*integer

Masterchain block sequence number (block height). Used to query state at a specific point in time. If omitted, returns the current state.

Formatint32
root_hash?string

The block's root hash for verification. Together with file_hash, this uniquely and cryptographically identifies a block. Only needed when proof of block identity is required.

file_hash?string

The block's file hash for verification. Together with root_hash, this provides cryptographic proof of block identity. Only needed for trustless verification.

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

curl -X GET "https://example.com/api/v2/getBlockHeader?workchain=0&shard=string&seqno=0"
{
  "ok": true,
  "result": {
    "@type": "blocks.header",
    "id": {
      "@type": "ton.blockIdExt",
      "workchain": 0,
      "shard": "string",
      "seqno": 0,
      "root_hash": "string",
      "file_hash": "string"
    },
    "global_id": 0,
    "version": 0,
    "after_merge": true,
    "after_split": true,
    "before_split": true,
    "want_merge": true,
    "want_split": true,
    "validator_list_hash_short": 0,
    "catchain_seqno": 0,
    "min_ref_mc_seqno": 0,
    "is_key_block": true,
    "prev_key_block_seqno": 0,
    "start_lt": "string",
    "end_lt": "string",
    "gen_utime": 0,
    "prev_blocks": [
      {
        "@type": "ton.blockIdExt",
        "workchain": 0,
        "shard": "string",
        "seqno": 0,
        "root_hash": "string",
        "file_hash": "string"
      }
    ]
  },
  "@extra": "string"
}
{
  "ok": false,
  "code": 401,
  "error": "API key does not exist"
}
{
  "ok": false,
  "code": 403,
  "error": "Network not allowed"
}
{
  "ok": false,
  "code": 422,
  "error": "workchain required"
}
{
  "ok": false,
  "code": 429,
  "error": "Ratelimit exceeded"
}
{
  "ok": false,
  "code": 504,
  "error": "LITE_SERVER_NETWORK timeout"
}

Last updated on

applications/api/toncenter/v2/accounts/get-wallet-information

applications/api/toncenter/v2/blocks/get-consensus-block