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 0x2d8299d755743eae0b2420a594febd19cdb0b135addfdc09b892d8e56a37c760. 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/5d428b53-2abb-4a46-8b81-ce95464983f7.json and https://artists.proofprofile.net/proofs/artist/5d428b53-2abb-4a46-8b81-ce95464983f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Nacht Van Mijn Leven - Karaoke versie
{"copyright_id":"0x13f4b956028e4bfee2c3a685de1d757e1b40f4c96289a31811c6905e99b8f05e","isrc":"NLH2L2200439","name":"M'n Favoriet - Hardstyle Remix","registered_at":"2026-06-04T11:27:07Z","spotify_id":"56pHVXLMTLoCqCKFrvfH9V","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 0x13f4b956028e4bfee2c3a685de1d757e1b40f4c96289a31811c6905e99b8f05e. 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/56pHVXLMTLoCqCKFrvfH9V.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/56pHVXLMTLoCqCKFrvfH9V.
De Twaalfde Man (Iedereen Staat In Oranje)
{"copyright_id":"0x26dbeb33fa5234b280ad296e6f6057f0b709a409155a7928a575fd853eef67b3","isrc":"NLQ272400052","name":"Ja [Opgeblazen Remix] - Radio Versie","registered_at":"2026-06-09T21:47:29Z","spotify_id":"2FgnpJdzS5EwFKPtMdTz9F","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dbeb33fa5234b280ad296e6f6057f0b709a409155a7928a575fd853eef67b3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2FgnpJdzS5EwFKPtMdTz9F.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/2FgnpJdzS5EwFKPtMdTz9F.
Ja [Opgeblazen Remix] - Extended Version
{"copyright_id":"0x56b455cdb90940d0044b198969d9c60953c10e2752c311a31ad968cd0d283496","isrc":"NLQ272400053","name":"Ja [Opgeblazen Remix] - Extended Version","registered_at":"2026-06-26T20:19:01Z","spotify_id":"7MZuupY8ebxPcBJMiZQ1V9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b455cdb90940d0044b198969d9c60953c10e2752c311a31ad968cd0d283496. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7MZuupY8ebxPcBJMiZQ1V9.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/7MZuupY8ebxPcBJMiZQ1V9.
{"copyright_id":"0x13f4b956028e4bfee2c3a685de1d757e1b40f4c96289a31811c6905e99b8f05e","isrc":"NLH2L2200439","name":"M'n Favoriet - Hardstyle Remix","registered_at":"2026-06-04T11:27:07Z","spotify_id":"1TWZSw3h7ccMfeJO7f4xrT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f4b956028e4bfee2c3a685de1d757e1b40f4c96289a31811c6905e99b8f05e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1TWZSw3h7ccMfeJO7f4xrT.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/1TWZSw3h7ccMfeJO7f4xrT.