Dominican Friars of the Holy Trinity Convent in Cracow
{"copyright_id":"0xb7ae77ecd1201b94ebc62daec6c05e7d7ad2852e7f74986faf7dff26d5aa250b","name":"Dominican Friars of the Holy Trinity Convent in Cracow","registered_at":"2026-06-20T03:50:38Z","symbol":"NIM1503394","token_address":"0x85f3710b1851e00aeb532ab261d68511ab1a2659","type":"artist","uuid":"9bc69762-a037-4f3c-b87a-699a3183c9ab"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ae77ecd1201b94ebc62daec6c05e7d7ad2852e7f74986faf7dff26d5aa250b. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bc69762-a037-4f3c-b87a-699a3183c9ab.json and https://artists.proofprofile.net/proofs/artist/9bc69762-a037-4f3c-b87a-699a3183c9ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).