1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x13014f742f766e680fa6a5fd6bf81da9648feabd0aa2230b9585135b3c3dccea. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22f9e54a-d471-4bea-9282-c250870f5799.json and https://artists.proofprofile.net/proofs/artist/22f9e54a-d471-4bea-9282-c250870f5799.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Black Violin (Live in Los Angeles, CA 2020)
Impossible is Possible - Jam in the Van Live Session
{"copyright_id":"0xcf97f7826f5485669d9a9dbb7c06422cb884b4e577fa65f3b37fce61c41104f9","isrc":"USA5W2000229","name":"Dark Skin (feat. Black Violin)","registered_at":"2026-06-07T20:17:38Z","spotify_id":"7jB8SaTcggKVHRffLcLs9W","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf97f7826f5485669d9a9dbb7c06422cb884b4e577fa65f3b37fce61c41104f9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7jB8SaTcggKVHRffLcLs9W.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7jB8SaTcggKVHRffLcLs9W.