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 0x89df58c7caaf85271500e9b07932baf3dafb94f63eb282a2394ef8162b3f7ba2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bce3c96-95cf-4413-a156-39529a937bce.json and https://artists.proofprofile.net/proofs/artist/0bce3c96-95cf-4413-a156-39529a937bce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Is Dit Nu De Liefde - Live / Bonus Track
Had Je Niet Even Kunnen Bellen - Live / Bonus Track
Iedereen - Bonus Track / Live bij 'Evers Staat Op'
Voltooid Verleden Tijd - Bonustrack (Live)
Zaterdagnacht (lange versie - bonustrack)
{"copyright_id":"0x729f3138ff981de8ac8afd6b22bdd9414e29bf82e442e959ca5a8eb3d3f05401","isrc":"NLA950600411","name":"Voltooid Verleden Tijd","registered_at":"2026-06-04T15:21:44Z","spotify_id":"5NNzSXY8cAbUhU7Viaird6","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 0x729f3138ff981de8ac8afd6b22bdd9414e29bf82e442e959ca5a8eb3d3f05401. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5NNzSXY8cAbUhU7Viaird6.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/5NNzSXY8cAbUhU7Viaird6.