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 0x0a26906de3f0c03cb6060fcf62173313d85d2b7181f88d9c572c62e07cf404a8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5856a437-b143-4611-b73c-2f5299e1df53.json and https://artists.proofprofile.net/proofs/artist/5856a437-b143-4611-b73c-2f5299e1df53.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x2e3ccf48eac3f64d8fd0d5c509b6a1369514cd1eb53ad95fc35889d3a0ed9cfb","isrc":"SE5W32414489","name":"same wavelength","registered_at":"2026-06-21T23:19:02Z","spotify_id":"1UgePTGqsGL4BBhbwaC51R","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 0x2e3ccf48eac3f64d8fd0d5c509b6a1369514cd1eb53ad95fc35889d3a0ed9cfb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1UgePTGqsGL4BBhbwaC51R.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/1UgePTGqsGL4BBhbwaC51R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1a846711976c1fa403cea2e5fd5a7b3148882d7f38b4b4cd55ed23776eab1a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/54cXwos73HshvvqxMtJTfZ.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/54cXwos73HshvvqxMtJTfZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc578359135d81af9c1abe0f0c0c90e87790c695fea7d2369dec05968504573a. 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/1bjFs4YdSukDAn4xMMqGo6.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/1bjFs4YdSukDAn4xMMqGo6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39958229622192ec248b045c30135e376794e5ccdafaa583bc65883b9ac1d587. 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/6cbXhV9VqOwIDHI8FrDIOz.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/6cbXhV9VqOwIDHI8FrDIOz.
{"copyright_id":"0xde86a93d15f0c1fad0a30388191adb2a39480b82ea875c5ebc994f7f9d8e04ba","isrc":"SE5W32405291","name":"Chasing Sunset","registered_at":"2026-06-06T03:56:26Z","spotify_id":"5nEVkmu1pLSxz3ZWJLOIj3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde86a93d15f0c1fad0a30388191adb2a39480b82ea875c5ebc994f7f9d8e04ba. 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/5nEVkmu1pLSxz3ZWJLOIj3.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/5nEVkmu1pLSxz3ZWJLOIj3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69983ddbcbd208663be2f3a1fa966ab069975f5ef776ef1b679f036edbc49ae7. 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/3Nwxs0j9dykDDIBSsBPMcB.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/3Nwxs0j9dykDDIBSsBPMcB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310a611fcddae1d19cdf5d25ed024429ee46508b0b5361d472a175e18bdd0789. 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/1Nzk2qJbbk51iPc4qbw4eW.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/1Nzk2qJbbk51iPc4qbw4eW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe030f6ac40a2cfeae7a348510f2330ee6f4584450e50dd86710f2bc8e702fe67. 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/0MeFxDLrLaw3n0sSjIXYvn.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/0MeFxDLrLaw3n0sSjIXYvn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd1a08b32f7289bcc40bd1dff4d4a4c235f77b83ba64f65c263e7d93865e10a. 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/6OXrNh8asCu28gqFyTSw3Z.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/6OXrNh8asCu28gqFyTSw3Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a8d888677a1c9f86e9c1b4c1fe458932a1dfc4f14dcd158f1f8e239583bfc8. 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/40yQjVqMx52xTlY4KFZXnh.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/40yQjVqMx52xTlY4KFZXnh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca323b3edfea225df48a5c8c8b35c31b7fa55f257a4811fbc78368bbbd64fade. 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/52KobVe0PXvMMU9ESnAkXd.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/52KobVe0PXvMMU9ESnAkXd.
{"copyright_id":"0x3910449b709b8ac7d297ed9fce70134bf6b838e8a2fc2e6a0fa107e1b29ece48","isrc":"SE5W32201527","name":"Further Than Far","registered_at":"2026-06-06T17:05:55Z","spotify_id":"6lDhQE5NehNR4pizUh8B8p","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3910449b709b8ac7d297ed9fce70134bf6b838e8a2fc2e6a0fa107e1b29ece48. 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/6lDhQE5NehNR4pizUh8B8p.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/6lDhQE5NehNR4pizUh8B8p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b17f170f85dcf3288f69b753d3f137f4ab629d480c1a43ce719b7f9129ef3fa. 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/5l3iFPNLr9pWXeYOI7dDhs.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/5l3iFPNLr9pWXeYOI7dDhs.