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 0xfef5b32855482c8c507bc1839072bf3690c590f1eee9ff026c3efa7b63cd0c2e. 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/b72d118c-7be9-4c48-ac04-1b5e81b33b9a.json and https://artists.proofprofile.net/proofs/artist/b72d118c-7be9-4c48-ac04-1b5e81b33b9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xdfb20130925f288f22ff44b769d4da5ede1faf17f9ad9ddbff470f30da81367c","isrc":"TCABD1246771","name":"We're All in This Together","registered_at":"2026-06-29T04:24:04Z","spotify_id":"428cC4nBhgRMLwkjMFjXhw","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 0xdfb20130925f288f22ff44b769d4da5ede1faf17f9ad9ddbff470f30da81367c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/428cC4nBhgRMLwkjMFjXhw.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/428cC4nBhgRMLwkjMFjXhw.
{"copyright_id":"0x0d513e36f1b75db73a5718e57c9c27e01ca1b8b79eb3e0c72ef4c165cf99e6bc","isrc":"USUM71310291","name":"We Belong","registered_at":"2026-06-07T13:12:40Z","spotify_id":"6asOwqjK2YppOx2gpMJM8R","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d513e36f1b75db73a5718e57c9c27e01ca1b8b79eb3e0c72ef4c165cf99e6bc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6asOwqjK2YppOx2gpMJM8R.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/6asOwqjK2YppOx2gpMJM8R.
{"copyright_id":"0x2835a89728bc3fbc31c015bb0d4727f2f1c84c2868a127a70de0edbfda3dbef6","isrc":"USUM71501390","name":"We Belong - Odesza Remix","registered_at":"2026-06-11T05:58:35Z","spotify_id":"7s3SMFR99xvZuJtQtc5z3A","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2835a89728bc3fbc31c015bb0d4727f2f1c84c2868a127a70de0edbfda3dbef6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7s3SMFR99xvZuJtQtc5z3A.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/7s3SMFR99xvZuJtQtc5z3A.
Animal Crackers (Original Motion Picture Soundtrack)
Grey's Anatomy (Original Soundtrack Volume 4)
{"copyright_id":"0xec09e5dd10762f560957ea1a485539c27ef7385c1a64b2916355562deabf59b5","isrc":"USCJ81100636","name":"Way to the Future - Soundtrack Version","registered_at":"2026-06-08T17:24:10Z","spotify_id":"71YVpCaUM1WZzDmQ3tbSK8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec09e5dd10762f560957ea1a485539c27ef7385c1a64b2916355562deabf59b5. 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/71YVpCaUM1WZzDmQ3tbSK8.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/71YVpCaUM1WZzDmQ3tbSK8.
Drop Dead Diva (Music from the Original Television Series)
{"copyright_id":"0x0d513e36f1b75db73a5718e57c9c27e01ca1b8b79eb3e0c72ef4c165cf99e6bc","isrc":"USUM71310291","name":"We Belong","registered_at":"2026-06-07T13:12:40Z","spotify_id":"4lwG8dRdfxa8zzuWBs8bEa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d513e36f1b75db73a5718e57c9c27e01ca1b8b79eb3e0c72ef4c165cf99e6bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4lwG8dRdfxa8zzuWBs8bEa.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/4lwG8dRdfxa8zzuWBs8bEa.