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 0xa00c0be322f553471961def78602f5607f43a1f45fcc7a5924a9627089e1133f. 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/ace9c3f9-d9f1-45fe-989c-29c55216267f.json and https://artists.proofprofile.net/proofs/artist/ace9c3f9-d9f1-45fe-989c-29c55216267f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x919f3ce7046ea18d4ac7cca506a0ebf3a639f7745c1c847e092a80a57f6a369f","isrc":"TCACP1697745","name":"Wave (feat. Masego)","registered_at":"2026-06-29T04:00:05Z","spotify_id":"7xk0NjzXMfBPaWj35RWxhv","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 0x919f3ce7046ea18d4ac7cca506a0ebf3a639f7745c1c847e092a80a57f6a369f. 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/7xk0NjzXMfBPaWj35RWxhv.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/7xk0NjzXMfBPaWj35RWxhv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1396b470e5d5a1677cd2400e45fb123fe555f6537aa980d28e367c6cbcad0a5. 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/3udadddodhQy5HcvWEb4i9.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/3udadddodhQy5HcvWEb4i9.
Finest Hour (feat. Abir) - Acoustic Version
{"copyright_id":"0xb923bd1c77e13d05a56f213a6941a757b2276b7e16c63d5f0e03dc27b9a666e6","isrc":"USAT21811030","name":"Finest Hour (feat. Abir) - Acoustic Version","registered_at":"2026-06-08T18:32:38Z","spotify_id":"6ZMTQIeV5IZMTOFmVhDziW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb923bd1c77e13d05a56f213a6941a757b2276b7e16c63d5f0e03dc27b9a666e6. 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/6ZMTQIeV5IZMTOFmVhDziW.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/6ZMTQIeV5IZMTOFmVhDziW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bf2090ab9d86d5d94b81a0d2b19d02a41d0173fe042391db0cee9971834192. 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/1b6loDESBsvHRSV85FjbYI.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/1b6loDESBsvHRSV85FjbYI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2541771c14ae0527b25dc813e461475faf7c9bee0567937114b352c03ac542. 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/4rHsgOa6mZoQ50F6HVr4l6.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/4rHsgOa6mZoQ50F6HVr4l6.
Finest Hour (feat. Abir) - Madison Mars Remix
{"copyright_id":"0x871d89c86e09e96748e5e1319fb7daf2f749d24fb4e120242078f9d7e4b630bb","isrc":"USAT21802122","name":"Finest Hour (feat. Abir) - Madison Mars Remix","registered_at":"2026-06-07T18:42:37Z","spotify_id":"4NlO8s4WHOt7iHUcB1Ip8L","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871d89c86e09e96748e5e1319fb7daf2f749d24fb4e120242078f9d7e4b630bb. 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/4NlO8s4WHOt7iHUcB1Ip8L.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/4NlO8s4WHOt7iHUcB1Ip8L.
Finest Hour (feat. Abir) - Zookëper Remix
{"copyright_id":"0xa0c67f62bb1b8802895cea315130f933abee9b91220ed0bd5b7277fbabd99afd","isrc":"USAT21802757","name":"Finest Hour (feat. Abir) - Zookëper Remix","registered_at":"2026-06-11T04:45:37Z","spotify_id":"6ErXgaQWqpZQ4fQJpGxpcp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c67f62bb1b8802895cea315130f933abee9b91220ed0bd5b7277fbabd99afd. 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/6ErXgaQWqpZQ4fQJpGxpcp.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/6ErXgaQWqpZQ4fQJpGxpcp.
Finest Hour (feat. Abir) - Michael Calfan Remix
{"copyright_id":"0x614bd158ccf2d01ffa1474a7351adbeb56da6ded7a166abbedd31b652bb3ce53","isrc":"USAT21802759","name":"Finest Hour (feat. Abir) - Michael Calfan Remix","registered_at":"2026-06-07T06:29:42Z","spotify_id":"4DPwy3jP2Iy5XDxfiYxq6f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614bd158ccf2d01ffa1474a7351adbeb56da6ded7a166abbedd31b652bb3ce53. 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/4DPwy3jP2Iy5XDxfiYxq6f.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/4DPwy3jP2Iy5XDxfiYxq6f.
{"copyright_id":"0xa7526148c847c0419b68ff6346dbc3419a97c6a9091f2d5396e244e77183d7db","isrc":"USAT21802755","name":"Finest Hour (feat. Abir) - Savi Remix","registered_at":"2026-06-20T19:11:53Z","spotify_id":"25hAsNtpOYRV6nLIsTULw7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7526148c847c0419b68ff6346dbc3419a97c6a9091f2d5396e244e77183d7db. 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/25hAsNtpOYRV6nLIsTULw7.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/25hAsNtpOYRV6nLIsTULw7.
Finest Hour (feat. Abir) - Denis First & Reznikov Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bf2090ab9d86d5d94b81a0d2b19d02a41d0173fe042391db0cee9971834192. 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/0p0ljM6RxgpGt7wthGqBZa.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/0p0ljM6RxgpGt7wthGqBZa.
{"copyright_id":"0xacf9b59d9d371e72094c26bcd29aad3a65a3d410ef7d326e6961e01525fb49f9","isrc":"QZ8TY1700022","name":"Zara (feat. Abir)","registered_at":"2026-06-06T03:11:21Z","spotify_id":"4IlBZXHTwY7DoxA4piiHtM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf9b59d9d371e72094c26bcd29aad3a65a3d410ef7d326e6961e01525fb49f9. 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/4IlBZXHTwY7DoxA4piiHtM.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/4IlBZXHTwY7DoxA4piiHtM.