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 0x66cd2cb40519f456a003a8cfcb4ad234a60b514df0c1f1d031b676a2b5b58cba. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f97c3fb2-c7d2-4128-8921-f35101af7dc9.json and https://artists.proofprofile.net/proofs/artist/f97c3fb2-c7d2-4128-8921-f35101af7dc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When I Give My Heart To You Freestyle (Prod DJ Mentat)