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 0x187503ab5cf4194211ae31c75f20d90d14c3b1da6451438f6660b994a10b1d37. 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/a4085e42-5d54-413b-8c0b-9956cf7d9084.json and https://artists.proofprofile.net/proofs/artist/a4085e42-5d54-413b-8c0b-9956cf7d9084.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
We Don’t Have To Take Our Clothes Off (The Voice Performance)