{"copyright_id":"0xce13b9f2edf4fdb698b2dc2f1f0c687e1b570501bd6b7444d5e41e1a4df005ac","name":"Suomen ortodoksinen kanttorikuoro","registered_at":"2026-06-17T08:40:41Z","symbol":"NIM1341269","token_address":"0x9eb364cb739859abdccb539ab8ce9431bff05055","type":"artist","uuid":"7b6308a6-dbb4-48a7-a2d8-552b1e2bd452"}
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 0xce13b9f2edf4fdb698b2dc2f1f0c687e1b570501bd6b7444d5e41e1a4df005ac. Chain 2 (Bitcoin): anchored in block 954124 (2026-06-17T18:22:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b6308a6-dbb4-48a7-a2d8-552b1e2bd452.json and https://artists.proofprofile.net/proofs/artist/7b6308a6-dbb4-48a7-a2d8-552b1e2bd452.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ORTODOKSISTEN KANTTORIEN LIITON 60-VUOTISJUHLA (Kanttorinkuoron sävelhartaus Uspenskin katedraalissa 26.9.1992)