thumb|Madison Square Garden An arena is a large enclosed venue, often circular or oval-shaped, designed to showcase theatre, musical performances or sporting events. It comprises a large open space s
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 0xb7d1dcfe1c8fec3bfe008d714bbfd0e850cd965c031b55c1f14b9c47c320bf80. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a610173-47c6-4d0a-8685-000427368a38.json and https://artists.proofprofile.net/proofs/artist/9a610173-47c6-4d0a-8685-000427368a38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).