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 0x1401af3ff7c58196c3c1a13012867c5ee208da69a7eabad222135fb8b2abc14c. 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/501389e2-778a-4d57-ae9b-bc11f2251e05.json and https://artists.proofprofile.net/proofs/artist/501389e2-778a-4d57-ae9b-bc11f2251e05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x57c212a0ae3c18c20ed9826f83f199627ebbfe2b170aa85b84fed605c81f268d","isrc":"USNPW2300534","name":"RIGHT OR WRONG (HYPNOSIS)","registered_at":"2026-06-04T15:14:05Z","spotify_id":"51ZORoK6CjR2QO60CBPTIX","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 0x57c212a0ae3c18c20ed9826f83f199627ebbfe2b170aa85b84fed605c81f268d. 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/51ZORoK6CjR2QO60CBPTIX.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/51ZORoK6CjR2QO60CBPTIX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92750f23e4fd1844ea47d6921b27f54d602eafeb90faad95c618d2febbe88925. 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/38NFpvlDlMocYknYgS5IA7.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/38NFpvlDlMocYknYgS5IA7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536c3202a11ff6621b4fd4d6908ff41a9d02b2076ff9bcfd1eb8041d1dc95adf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5ozItXQxVIcYuAenhjROIg.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/5ozItXQxVIcYuAenhjROIg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95547796f5ce2e81fa89cd43db055a96d9992c7ff5055b31123f5b075db3d57. 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/6tG5dlQgmOK40DX44XkJJK.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/6tG5dlQgmOK40DX44XkJJK.
{"copyright_id":"0x81a9e1beca3d9c3382300029603efe3133c194bbf823951dc58aaf22ec59ccc8","isrc":"USA2P2314635","name":"Deep End (Computa Remix)","registered_at":"2026-06-21T03:42:44Z","spotify_id":"6HpA0h92a3t4XC6pFRrJNn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a9e1beca3d9c3382300029603efe3133c194bbf823951dc58aaf22ec59ccc8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6HpA0h92a3t4XC6pFRrJNn.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/6HpA0h92a3t4XC6pFRrJNn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa782b6c8423ebbe1ef466688221269be01ea3b5b33048cc07f73e15f34175cd1. 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/0S0OVtqHEMCMPw320PnklF.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/0S0OVtqHEMCMPw320PnklF.