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TON CenterV2Blocks

applications/api/toncenter/v2/blocks/lookup-block

GET
/api/v2/lookupBlock

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

Query state at a specific block height. If omitted, returns the current state. Use this to look up historical data at a specific point in time.

Formatint32
lt?string

Logical time of a block

unixtime?integer

UNIX timestamp of a block

Formatint32

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

curl -X GET "https://example.com/api/v2/lookupBlock?workchain=0&shard=string"
{
  "ok": true,
  "result": {
    "@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": "failed to parse workchain"
}
{
  "ok": false,
  "code": 429,
  "error": "Ratelimit exceeded"
}
{
  "ok": false,
  "code": 504,
  "error": "LITE_SERVER_NETWORK timeout"
}

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