thumb|upright=0.7|TamS TamS is a theatre in Munich, Bavaria, Germany. Category:Theatres in Munich
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e6aeecba619504e0de6d73bcda5b001e1f52376fcabf1552ff3d3ef4948e94. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a48e06ed-e5f2-4bde-8641-5fc5988a072c.json and https://artists.proofprofile.net/proofs/artist/a48e06ed-e5f2-4bde-8641-5fc5988a072c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).