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 0xa9b76c8686492a6e425b7e9f6ed2900e26872e4acecb21384447c1a0bc7a9589. 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/0654f870-ada9-4206-b9df-284d5d293d60.json and https://artists.proofprofile.net/proofs/artist/0654f870-ada9-4206-b9df-284d5d293d60.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 0xe4814aef3f86a81013fecc95278d2d498529038a4e204289147e5508c855fc5a. 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/4zsDA31stWMtLveU61hejd.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/4zsDA31stWMtLveU61hejd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c865c3c08d9701ae89309c632c8ef52b820249b38cea9a609d0eb106895012. 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/1crk0MXXyFQ1zVow6YTJOo.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/1crk0MXXyFQ1zVow6YTJOo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70503b908b8d1f6887af75dd3427c4874d9c3034fc15e7644c9e32031155dee. 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/1NvW2TiZvxhhxJLU8tz4fD.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/1NvW2TiZvxhhxJLU8tz4fD.
{"copyright_id":"0xa70ce576ffebfa9956c0fc4467ae0e64126c144acc289e8e851341fbfca2dbc0","isrc":"QM4TW1948274","name":"El Sur de la Ciudad","registered_at":"2026-06-09T20:43:51Z","spotify_id":"7cpmOUEq5w1ixakEBwhYDm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70ce576ffebfa9956c0fc4467ae0e64126c144acc289e8e851341fbfca2dbc0. 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/7cpmOUEq5w1ixakEBwhYDm.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/7cpmOUEq5w1ixakEBwhYDm.
{"copyright_id":"0x5dad4e77085105ad794423f1c4b3bbaa7984d7c8f9d97bfbe7defbc7b884315a","isrc":"USSM11205510","name":"Cold, Cold Heart (with Vicentico)","registered_at":"2026-06-17T22:25:16Z","spotify_id":"6V5kMW3vhcduEgFp5TPYsG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dad4e77085105ad794423f1c4b3bbaa7984d7c8f9d97bfbe7defbc7b884315a. 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/6V5kMW3vhcduEgFp5TPYsG.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/6V5kMW3vhcduEgFp5TPYsG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70503b908b8d1f6887af75dd3427c4874d9c3034fc15e7644c9e32031155dee. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7AlaJNO643CTf7Kx1Ddi0S.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/7AlaJNO643CTf7Kx1Ddi0S.
Cuerpo (Canciones a Partir de Mariano Ferreyra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3acd4e3836f1643b4dc67865acc3846357f5089592912ec17732317e34e8f0b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5eDGqpXUlJ6fPZKQP8XvAK.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/5eDGqpXUlJ6fPZKQP8XvAK.
{"copyright_id":"0xcacae06cea1288a6f3f1eac5fc3450e919cd2f0e73c29f64f9409d84a8d9d11f","isrc":"MX1722001149","name":"Cómo Te Voy a Olvidar","registered_at":"2026-06-04T07:44:23Z","spotify_id":"6OryDJSbObHMfaRF0nkErq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacae06cea1288a6f3f1eac5fc3450e919cd2f0e73c29f64f9409d84a8d9d11f. 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/6OryDJSbObHMfaRF0nkErq.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/6OryDJSbObHMfaRF0nkErq.
Cómo Te Voy a Olvidar ¡Edición de Súper Lujo!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f41386c634142b48ad9ef901cb55e0c935371b15368c326bae6af11bb87ecea. 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/6WhBAbnrhPrBkTwI3uMBwZ.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/6WhBAbnrhPrBkTwI3uMBwZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f41386c634142b48ad9ef901cb55e0c935371b15368c326bae6af11bb87ecea. 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/3zNHMb8lMrub8tfl450Ixr.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/3zNHMb8lMrub8tfl450Ixr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3cfed87546ca3c115c5ade83a8ed377a967a02f57c63caf50302df92dbd786. 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/3zblokSLEcvzpQF3esxFvO.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/3zblokSLEcvzpQF3esxFvO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3cfed87546ca3c115c5ade83a8ed377a967a02f57c63caf50302df92dbd786. 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/1SXPlj3wH0Luz40LmBFjso.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/1SXPlj3wH0Luz40LmBFjso.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5defc24d86e0b1913ad9b5747c2b68bb900f425232877a7420b566704488bd5a. 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/29bZ0wIYlZtLxX2lQejkj9.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/29bZ0wIYlZtLxX2lQejkj9.
Pelo Music Quince Años - Colección Pop Singles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa4830468f10bfaeeda4624d50bd06de366a52e54410374159d162bedf1904d. 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/74b6K0AZr4tNKeA3gab9UU.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/74b6K0AZr4tNKeA3gab9UU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4814aef3f86a81013fecc95278d2d498529038a4e204289147e5508c855fc5a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3opFWFs7wcrzfGKIoUvsR6.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/3opFWFs7wcrzfGKIoUvsR6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3acd4e3836f1643b4dc67865acc3846357f5089592912ec17732317e34e8f0b. 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/0dlmUQeY8dRxmQGeoSm3Hw.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/0dlmUQeY8dRxmQGeoSm3Hw.
Tres Marías (feat. Pablo Lescano & Vicentico) - Pablo Lescano Mix
{"copyright_id":"0xfddace328661ff32434bd33355787716a225ed78c58492300f90350ff4af9926","isrc":"ES5151000523","name":"Tres Marías (feat. Pablo Lescano & Vicentico) - Pablo Lescano Mix","registered_at":"2026-06-08T11:24:44Z","spotify_id":"3SZqflrXDXJb0M2piKcBOb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddace328661ff32434bd33355787716a225ed78c58492300f90350ff4af9926. 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/3SZqflrXDXJb0M2piKcBOb.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/3SZqflrXDXJb0M2piKcBOb.