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 0xd225c537d5b3df2d5dc35f4932049f30ba586df6832fb932d36e2a4eced4994d. 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/9fb88ce7-1eff-4614-8010-df3041985a83.json and https://artists.proofprofile.net/proofs/artist/9fb88ce7-1eff-4614-8010-df3041985a83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x3a48ea3eb97553f57048f06dc0a44e28da309de77943451733e8afea227292cb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0ieZaDUjDQIxialHX00VdB.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/0ieZaDUjDQIxialHX00VdB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a14c3e5fbe23a346e78d802e015960889c63f10bd40d73d13b19e97462fef7. 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/35EZifQqNo6q2thyCITP2B.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/35EZifQqNo6q2thyCITP2B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198fd6a25acba4bf1494305c6a3404565fa07c978da8845e9c8fe77882e684b9. 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/2v0nc4CmfsOgiVVmVR388k.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/2v0nc4CmfsOgiVVmVR388k.
{"copyright_id":"0x268f2d178d3bf437d929d43bdde3301aeda756d0b71e7304ae91571d36f34cf1","isrc":"QZQAY2429571","name":"SAYONARA REMIX","registered_at":"2026-06-10T16:32:57Z","spotify_id":"3aPB8AZfENZ2SG0lQSoMrA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268f2d178d3bf437d929d43bdde3301aeda756d0b71e7304ae91571d36f34cf1. 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/3aPB8AZfENZ2SG0lQSoMrA.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/3aPB8AZfENZ2SG0lQSoMrA.
{"copyright_id":"0x40be02fe15fdb1051f89b5d39aa989051f1b1b77362e919adfd51b8bebb29b10","isrc":"QM6P42460432","name":"LA MANTECA DE CACAO","registered_at":"2026-06-08T02:45:54Z","spotify_id":"21kjuLXxQ846VphVdHBvkc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be02fe15fdb1051f89b5d39aa989051f1b1b77362e919adfd51b8bebb29b10. 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/21kjuLXxQ846VphVdHBvkc.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/21kjuLXxQ846VphVdHBvkc.