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GET
/
api
/
v2
/
getShardBlockProof
Get shard block proof
curl --request GET \
  --url https://toncenter.com/api/v2/getShardBlockProof \
  --header 'X-API-Key: <api-key>'
{
  "ok": true,
  "result": {
    "@type": "blocks.shardBlockProof",
    "from": {
      "@type": "ton.blockIdExt",
      "workchain": 123,
      "shard": "<string>",
      "seqno": 123,
      "root_hash": "<string>",
      "file_hash": "<string>"
    },
    "mc_id": {
      "@type": "ton.blockIdExt",
      "workchain": 123,
      "shard": "<string>",
      "seqno": 123,
      "root_hash": "<string>",
      "file_hash": "<string>"
    },
    "links": [
      {
        "@type": "blocks.shardBlockLink",
        "id": {
          "@type": "ton.blockIdExt",
          "workchain": 123,
          "shard": "<string>",
          "seqno": 123,
          "root_hash": "<string>",
          "file_hash": "<string>"
        },
        "proof": "<string>"
      }
    ],
    "mc_proof": [
      {
        "@type": "blocks.blockLinkBack",
        "to_key_block": true,
        "from": {
          "@type": "ton.blockIdExt",
          "workchain": 123,
          "shard": "<string>",
          "seqno": 123,
          "root_hash": "<string>",
          "file_hash": "<string>"
        },
        "to": {
          "@type": "ton.blockIdExt",
          "workchain": 123,
          "shard": "<string>",
          "seqno": 123,
          "root_hash": "<string>",
          "file_hash": "<string>"
        },
        "dest_proof": "<string>",
        "proof": "<string>",
        "state_proof": "<string>"
      }
    ]
  },
  "@extra": "<string>"
}

Authorizations

​
X-API-Key
string
header
required

API key header of the form X-API-Key: <token>, where <token> is your API key. Requests without a key are limited to 1 RPS. More info here.

Query Parameters

​
workchain
integer<int32>
required

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.

​
shard
string
required

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<int32>
required

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

​
from_seqno
integer<int32>

Seqno of masterchain block starting from which proof is required. If not specified latest masterchain block is used

Response

Returns a cryptographic proof chain linking a shard block to the masterchain.

​
ok
boolean
default:true
required

Returns true if the request succeeded; otherwise false. See the error field for details.

​
result
object
required

Response data. Present only when ok is true.

​
@extra
string

Optional request ID that you can pass in the request and receive back in the response. Useful for matching async responses.