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 0x7346f1197eb0fa5bb9c70238aaa19dcf85ab0e44b90f78665a0047a5152d1a21. 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/f740732c-5a4c-4cc9-8ea9-51ef24eec22b.json and https://artists.proofprofile.net/proofs/artist/f740732c-5a4c-4cc9-8ea9-51ef24eec22b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x878d8d7eb09d8db0ee2b54acb383b770010ab6feaa261d91adc4281c685e374f","isrc":"ARF412400201","name":"Water - Bossa Nova Version","registered_at":"2026-06-05T22:51:07Z","spotify_id":"6aSDjkiv7J8JtqGhUobO3Z","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 0x878d8d7eb09d8db0ee2b54acb383b770010ab6feaa261d91adc4281c685e374f. 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/6aSDjkiv7J8JtqGhUobO3Z.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/6aSDjkiv7J8JtqGhUobO3Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80671c3a2afdd6e983d141927229d16874f6c4002a99e3f8cbd532793d2a266d. 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/0paKqp6k6BubOuj6mtaZyW.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/0paKqp6k6BubOuj6mtaZyW.
Speed of Sound - Groove Da Praia Bossa Mix
{"copyright_id":"0x3151044532a0447195cea433dcfcb0f5a4c6b0414cabcb43a95f1145dc8646cf","isrc":"ARF412200173","name":"Speed of Sound - Groove Da Praia Bossa Mix","registered_at":"2026-06-09T19:02:55Z","spotify_id":"5qqmpWxcDD5zWGzsaqZmEi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3151044532a0447195cea433dcfcb0f5a4c6b0414cabcb43a95f1145dc8646cf. 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/5qqmpWxcDD5zWGzsaqZmEi.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/5qqmpWxcDD5zWGzsaqZmEi.
{"copyright_id":"0xaaf1b443506cdff0180b5e1be8373635c9cffd78d333dfebc361a9484d333551","isrc":"ARF412300345","name":"The Rhythm of the Night - Ronan Remix","registered_at":"2026-06-06T18:24:21Z","spotify_id":"2asxqo6EW5rTOiHYka70dX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf1b443506cdff0180b5e1be8373635c9cffd78d333dfebc361a9484d333551. 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/2asxqo6EW5rTOiHYka70dX.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/2asxqo6EW5rTOiHYka70dX.
{"copyright_id":"0x673f204b1193aa20ef04e6d1e17a8ed5a2c90bb20573cb0c98e15d44d4c22dfa","isrc":"ARF412400103","name":"Chained to the Rhythm - Ronan Remix","registered_at":"2026-06-09T09:14:36Z","spotify_id":"2mVCsFYhtUvrCNGWuxwXhU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673f204b1193aa20ef04e6d1e17a8ed5a2c90bb20573cb0c98e15d44d4c22dfa. 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/2mVCsFYhtUvrCNGWuxwXhU.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/2mVCsFYhtUvrCNGWuxwXhU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1606a54ef3e51a31ccc6f69cb465d0778a18cf4606caedf1dd928dd1b50846e6. 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/0vUIS3swIe6uE77gPzGRTk.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/0vUIS3swIe6uE77gPzGRTk.
{"copyright_id":"0xd99f0e97e84a918a093f9d19f204045fb0816ecfde38eb57d7d63ba4b7b650fc","isrc":"ARF412300268","name":"Digging Your Scene","registered_at":"2026-06-04T07:56:54Z","spotify_id":"3pZWfQPprqKmf6T425eyWM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99f0e97e84a918a093f9d19f204045fb0816ecfde38eb57d7d63ba4b7b650fc. 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/3pZWfQPprqKmf6T425eyWM.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/3pZWfQPprqKmf6T425eyWM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd743a0b767965b9f05ba05d8c00ae86d3677ed7b7afa6bdb74f460b2076adf9b. 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/0MUfIo6Xi3tPBcqSBDICga.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/0MUfIo6Xi3tPBcqSBDICga.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc131e68ef83e20d16a25380d6744b87f5b308508649a4becb56082f12e82fa15. 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/2mxnu8BYoKjI6IaK63YqdG.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/2mxnu8BYoKjI6IaK63YqdG.
{"copyright_id":"0x61727fd950f20912693a1dcd3d3e80759210430e125777de9866a3ee245a9ff9","isrc":"ARF412400249","name":"Is This Love - Ronan Instrumental Remix","registered_at":"2026-06-09T19:06:17Z","spotify_id":"6wtgVS4kNnULXCbu3ygfYH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61727fd950f20912693a1dcd3d3e80759210430e125777de9866a3ee245a9ff9. 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/6wtgVS4kNnULXCbu3ygfYH.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/6wtgVS4kNnULXCbu3ygfYH.
{"copyright_id":"0x81ef52a940a4b194896250c96446197bff4bdbcc1202faa3e454679501be41c6","isrc":"ARF412000065","name":"Talking in Your Sleep - Bossa Nova Mix","registered_at":"2026-06-04T10:22:49Z","spotify_id":"29FhrrmDlHJbtLYRTvznEc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef52a940a4b194896250c96446197bff4bdbcc1202faa3e454679501be41c6. 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/29FhrrmDlHJbtLYRTvznEc.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/29FhrrmDlHJbtLYRTvznEc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5776063c594879e9940eb87ccae8fed5b74378ee52b6d8f7b25f1c177cc33f. 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/1lnzZ5EH1o9diU4N1u4F5P.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/1lnzZ5EH1o9diU4N1u4F5P.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439a668ec55658c3ef980ca7c71a31cab84a5ba2943998d8109506da26f7b47. 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/3JgnEyjiZYZcntZyWE8MWQ.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/3JgnEyjiZYZcntZyWE8MWQ.
{"copyright_id":"0xd99f0e97e84a918a093f9d19f204045fb0816ecfde38eb57d7d63ba4b7b650fc","isrc":"ARF412300268","name":"Digging Your Scene","registered_at":"2026-06-04T07:56:54Z","spotify_id":"4nIG4dzc895hsw9kYUwigk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99f0e97e84a918a093f9d19f204045fb0816ecfde38eb57d7d63ba4b7b650fc. 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/4nIG4dzc895hsw9kYUwigk.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/4nIG4dzc895hsw9kYUwigk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b2bbfbf47cd5485f1da848918a40e818935fb121168e74d6ba3f8fe67c5c2b. 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/6oM4Zc9XsIaGGaXJuRQ01b.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/6oM4Zc9XsIaGGaXJuRQ01b.
{"copyright_id":"0xc513cceea1476c1eced76133b0fa3f233f8822ecef7170e4db3abd04cbb10bc3","isrc":"ARF410600528","name":"Used to Love Her - New Vocal Mix","registered_at":"2026-06-08T02:40:41Z","spotify_id":"0nRZa3CBDGYc7WEBKODArQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc513cceea1476c1eced76133b0fa3f233f8822ecef7170e4db3abd04cbb10bc3. 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/0nRZa3CBDGYc7WEBKODArQ.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/0nRZa3CBDGYc7WEBKODArQ.
{"copyright_id":"0x3aad86bc36bfa8656c724db7a00419c612577c1f7c2fa9a52583fafb70521efa","isrc":"ARF410500010","name":"Miss You - Back 2 Remixes","registered_at":"2026-06-08T04:39:35Z","spotify_id":"5IzPVLAz4RBBOWEm8WhMIW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aad86bc36bfa8656c724db7a00419c612577c1f7c2fa9a52583fafb70521efa. 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/5IzPVLAz4RBBOWEm8WhMIW.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/5IzPVLAz4RBBOWEm8WhMIW.
{"copyright_id":"0x81ef52a940a4b194896250c96446197bff4bdbcc1202faa3e454679501be41c6","isrc":"ARF412000065","name":"Talking in Your Sleep - Bossa Nova Mix","registered_at":"2026-06-04T10:22:49Z","spotify_id":"5SW41DBFypRSJKVbk04Jhl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef52a940a4b194896250c96446197bff4bdbcc1202faa3e454679501be41c6. 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/5SW41DBFypRSJKVbk04Jhl.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/5SW41DBFypRSJKVbk04Jhl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89975792d0bffbcc46f75f73f177cec8906615c58ae89fc1e8ed1cf99d34efee. 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/1ai42SqNPYU2l8w1bXmpUE.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/1ai42SqNPYU2l8w1bXmpUE.
Brazil - The Complete Bossa Nova Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb58f758b1a30e9f6e37abb86fa6a3d354c6d83bd66640dcee515f16468cc7c. 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/4G4r8sxZ8ElS52y3gi8vai.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/4G4r8sxZ8ElS52y3gi8vai.
{"copyright_id":"0x6ddc16a84af88d0ad29d79097454953d8f1bcc6b8c4f470125b76ba34718ee63","isrc":"ARF412000045","name":"The Rhythm of the Night","registered_at":"2026-06-09T16:37:59Z","spotify_id":"2i28hv9ClaXljIexJy1Kzc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddc16a84af88d0ad29d79097454953d8f1bcc6b8c4f470125b76ba34718ee63. 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/2i28hv9ClaXljIexJy1Kzc.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/2i28hv9ClaXljIexJy1Kzc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e490deb86fb783021ec1b71208694f081b4715423e1ae720b2293462b20aee. 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/4avOZqFUd8UtwEp27jak9h.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/4avOZqFUd8UtwEp27jak9h.