Get shard block proof
Returns a Merkle proof that links a shardchain block to a masterchain block. This proof cryptographically verifies that the shard block is part of the canonical chain. Used by light clients and cross-chain bridges to verify shard data without trusting the API.
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
Request Body
application/json
TypeScript Definitions
Use the request body type in TypeScript.
Response Body
application/json
application/json
curl -X POST "https://example.com/api/v2/getShardBlockProof" \ -H "Content-Type: application/json" \ -d '{ "workchain": "string", "shard": "string", "seqno": "string" }'{ "ok": true, "result": { "@type": "blocks.shardBlockProof", "from": { "@type": "ton.blockIdExt", "workchain": 0, "shard": "string", "seqno": 0, "root_hash": "string", "file_hash": "string" }, "mc_id": { "@type": "ton.blockIdExt", "workchain": 0, "shard": "string", "seqno": 0, "root_hash": "string", "file_hash": "string" }, "links": [ { "@type": "blocks.shardBlockLink", "id": { "@type": "ton.blockIdExt", "workchain": 0, "shard": "string", "seqno": 0, "root_hash": "string", "file_hash": "string" }, "proof": "string" } ], "mc_proof": [ { "@type": "blocks.blockLinkBack", "to_key_block": true, "from": { "@type": "ton.blockIdExt", "workchain": 0, "shard": "string", "seqno": 0, "root_hash": "string", "file_hash": "string" }, "to": { "@type": "ton.blockIdExt", "workchain": 0, "shard": "string", "seqno": 0, "root_hash": "string", "file_hash": "string" }, "dest_proof": "string", "proof": "string", "state_proof": "string" } ] }, "@extra": "string"}