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 0x8005581078d870648c951942805cefbf43589d589d933e8389ce6f7fabdc5f1c. 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/3263fd1a-61fc-446e-8cee-07fd942811c0.json and https://artists.proofprofile.net/proofs/artist/3263fd1a-61fc-446e-8cee-07fd942811c0.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 0xa2e3b5ab06455048f2ca11722cd9dd4024fed3988ecc433652b1be32999e10da. 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/6T1FGOC96wa0vaZ6qIz8VK.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/6T1FGOC96wa0vaZ6qIz8VK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac19492c37f3d722fe3cccc0872a013076b7d4af6afc24b188843ec3788b12c8. 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/1Ov4E4nE7E0yzeqpbhEE5g.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/1Ov4E4nE7E0yzeqpbhEE5g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac19492c37f3d722fe3cccc0872a013076b7d4af6afc24b188843ec3788b12c8. 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/28hgx2bWXcaBJeC9zVwrBq.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/28hgx2bWXcaBJeC9zVwrBq.
Oral Fixation, Vol. 2 (Expanded Edition)
{"copyright_id":"0x8e08477e4a6c0d51bb13c552b3cda95427c8e94c7f9ac94efdc48c69dc08c407","isrc":"USSM10600677","name":"Hips Don't Lie (feat. Wyclef Jean)","registered_at":"2026-06-01T02:43:21Z","spotify_id":"3ZFTkvIE7kyPt6Nu3PEa7V","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08477e4a6c0d51bb13c552b3cda95427c8e94c7f9ac94efdc48c69dc08c407. 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/3ZFTkvIE7kyPt6Nu3PEa7V.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/3ZFTkvIE7kyPt6Nu3PEa7V.
{"copyright_id":"0x90c16cdcf0af21b38496b7cb5f079b28defd2fb009f58366303df187f504c993","isrc":"USUG11901490","name":"Dear Future Self (Hands Up)","registered_at":"2026-06-04T09:40:20Z","spotify_id":"1tm4Bl2E5RwTevOiBs4gtH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c16cdcf0af21b38496b7cb5f079b28defd2fb009f58366303df187f504c993. 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/1tm4Bl2E5RwTevOiBs4gtH.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/1tm4Bl2E5RwTevOiBs4gtH.
Spanish Fly (feat. Ludacris, Wyclef Jean)
{"copyright_id":"0x7d496d168bdee1d83e5d9313347f212fe301ec9ffab32ba98419560648447b42","isrc":"US83W0970006","name":"Spanish Fly (feat. Ludacris, Wyclef Jean)","registered_at":"2026-06-04T15:17:03Z","spotify_id":"4Wyrppmuf8Gwi9v8dQwGxy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d496d168bdee1d83e5d9313347f212fe301ec9ffab32ba98419560648447b42. 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/4Wyrppmuf8Gwi9v8dQwGxy.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/4Wyrppmuf8Gwi9v8dQwGxy.
Cluck Cluck (feat. Wyclef Jean) - Dr. Dolittle 2 Soundtrack Version
{"copyright_id":"0x8d4940d47f4a0c4c3b85297890fea15803db6c2e38147ff77b384945954f538e","isrc":"USJAY0100230","name":"Cluck Cluck (feat. Wyclef Jean) - Dr. Dolittle 2 Soundtrack Version","registered_at":"2026-06-08T18:37:55Z","spotify_id":"7j63c6gAQ56U86vPQl80aA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4940d47f4a0c4c3b85297890fea15803db6c2e38147ff77b384945954f538e. 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/7j63c6gAQ56U86vPQl80aA.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/7j63c6gAQ56U86vPQl80aA.
{"copyright_id":"0x8e08477e4a6c0d51bb13c552b3cda95427c8e94c7f9ac94efdc48c69dc08c407","isrc":"USSM10600677","name":"Hips Don't Lie (feat. Wyclef Jean)","registered_at":"2026-06-01T02:43:21Z","spotify_id":"7sLxtsFaexe1yVDtkUsddw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08477e4a6c0d51bb13c552b3cda95427c8e94c7f9ac94efdc48c69dc08c407. 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/7sLxtsFaexe1yVDtkUsddw.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/7sLxtsFaexe1yVDtkUsddw.
R.O.O.T.S. (Route of Overcoming the Struggle)
{"copyright_id":"0x1cdf88695d9751a4b95d5a2b93adb4c9310d7afd17af4ef903328ec267d2652e","isrc":"USAT20900462","name":"Rewind (feat. Wyclef Jean)","registered_at":"2026-06-08T10:29:38Z","spotify_id":"2C29ebkVQrHv9LTnGPyy2F","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdf88695d9751a4b95d5a2b93adb4c9310d7afd17af4ef903328ec267d2652e. 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/2C29ebkVQrHv9LTnGPyy2F.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/2C29ebkVQrHv9LTnGPyy2F.
{"copyright_id":"0x100702e97e4a6c677e53797dffdcea466a60fc6d6b7edaa36a47c41fedccb752","isrc":"US38W1229211","name":"Reach for the Stars","registered_at":"2026-06-09T16:53:34Z","spotify_id":"7qUnGPnRM0YMwBvfmYhObt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100702e97e4a6c677e53797dffdcea466a60fc6d6b7edaa36a47c41fedccb752. 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/7qUnGPnRM0YMwBvfmYhObt.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/7qUnGPnRM0YMwBvfmYhObt.
{"copyright_id":"0xd040a8b5cbd79a9ae601e62ba981b637f16c07d0dd41cd8df6e62fa8b2f0d28d","isrc":"USTV10400345","name":"Slow Motion [Remix]","registered_at":"2026-06-08T18:37:26Z","spotify_id":"2emv7E4xpJh1uanArJu1qV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd040a8b5cbd79a9ae601e62ba981b637f16c07d0dd41cd8df6e62fa8b2f0d28d. 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/2emv7E4xpJh1uanArJu1qV.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/2emv7E4xpJh1uanArJu1qV.
{"copyright_id":"0x8e08477e4a6c0d51bb13c552b3cda95427c8e94c7f9ac94efdc48c69dc08c407","isrc":"USSM10600677","name":"Hips Don't Lie (feat. Wyclef Jean)","registered_at":"2026-06-01T02:43:21Z","spotify_id":"0du50z7U84o1fyKCrACmDZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08477e4a6c0d51bb13c552b3cda95427c8e94c7f9ac94efdc48c69dc08c407. 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/0du50z7U84o1fyKCrACmDZ.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/0du50z7U84o1fyKCrACmDZ.
{"copyright_id":"0x8e08477e4a6c0d51bb13c552b3cda95427c8e94c7f9ac94efdc48c69dc08c407","isrc":"USSM10600677","name":"Hips Don't Lie (feat. Wyclef Jean)","registered_at":"2026-06-01T02:43:21Z","spotify_id":"63UhG6cbRWoqDKHKgqWQWi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08477e4a6c0d51bb13c552b3cda95427c8e94c7f9ac94efdc48c69dc08c407. 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/63UhG6cbRWoqDKHKgqWQWi.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/63UhG6cbRWoqDKHKgqWQWi.
{"copyright_id":"0xa17c9c1578689a133c51f97f93bcddfde172f0ebbe6fad38c87cb41e301fa1ed","isrc":"USBB40707174","name":"Five-O (feat. Wyclef & P. Diddy)","registered_at":"2026-06-24T09:36:48Z","spotify_id":"3cttR5mtQZ5xRFxpE1pohl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c9c1578689a133c51f97f93bcddfde172f0ebbe6fad38c87cb41e301fa1ed. 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/3cttR5mtQZ5xRFxpE1pohl.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/3cttR5mtQZ5xRFxpE1pohl.
Five-O (feat. Wyclef, Swizz Beatz, Assassin, Yung Joc & P. Diddy) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2419f83f620e66835bf31d0c814d4c781cbc8ef1298e491bf6c3c46698a70d. 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/5StUs128KSibE16fxntBSL.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/5StUs128KSibE16fxntBSL.