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 0xed6aac38538916a4f1f1e813b0bec6a93fcbce8f1590edc97709e53c3cebaa66. 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/33d489b6-3eff-4ebe-8b49-f1f6c2cd819a.json and https://artists.proofprofile.net/proofs/artist/33d489b6-3eff-4ebe-8b49-f1f6c2cd819a.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 0xef9b87e4d58b4853d274ab6b7797b923a15bc388738387d129e85678707616fe. 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/769ZcFPojOmnl182pWyVPz.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/769ZcFPojOmnl182pWyVPz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2bdf0abd8bd119a842e3c77d2a07a00b617231e27b1329fa921e29c71f8d07. 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/3c5SigGBwULAJ3jMYW6Bsp.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/3c5SigGBwULAJ3jMYW6Bsp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2971ae2ae6ce1a8b5ab17ee190a4cf3bc335a6c51e592e5d5fbde7d5b28f8291. 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/1CI5fDGkiJRpZSHx8vNtP9.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/1CI5fDGkiJRpZSHx8vNtP9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a04e0cce49452c0b29686d01839d06a36de4364342e2d151b9feaabc951b40a. 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/4107MXHumRBAdX3SRs6yAd.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/4107MXHumRBAdX3SRs6yAd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b75b0632f083f31076eb834c1b18c57ba71b00f1c224853fe1426d4d2fa191. 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/0CjMNFrEvZKwfP5mr4YNb7.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/0CjMNFrEvZKwfP5mr4YNb7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f1bf4024c738536e4293a68eed4345267068f46eab4abd67b9052800618d8d. 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/4XxlJwPvdz6VaIsktg242y.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/4XxlJwPvdz6VaIsktg242y.
{"copyright_id":"0xcd9855181b5ca216a235a200999ce2de6c85dc33f23c704a971874a143a2c339","isrc":"QZHZ41998326","name":"Aunque a Veces Tenga Miedo","registered_at":"2026-06-09T10:20:26Z","spotify_id":"3Ahm0LTWLy7k7YjLIBQlNY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9855181b5ca216a235a200999ce2de6c85dc33f23c704a971874a143a2c339. 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/3Ahm0LTWLy7k7YjLIBQlNY.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/3Ahm0LTWLy7k7YjLIBQlNY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f6be4b8fba239066ad12b9af77fdf913d7fef50faf22db7d1c2e4e8612078. 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/08XXZRGaPSo1V41LNG8J0k.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/08XXZRGaPSo1V41LNG8J0k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ba5091b4adcce6b4e58922f3b7b5131fd3b81a0c8b4a588de5be5e35c0dc0f. 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/6D5kJ5w3wGrAQzpGLV8hKE.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/6D5kJ5w3wGrAQzpGLV8hKE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785fa5f21837e0730ae607c836be77da89a1ed1ec1ec8fee0cd4c111fcbfbd19. 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/2Fu4M3xj2I84AsOypwG2pQ.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/2Fu4M3xj2I84AsOypwG2pQ.
{"copyright_id":"0x996facc60490baee09377a565060f2a191c66e965c4a7fb3b51d9be460ab9a94","isrc":"FR2X42406547","name":"LOS AMIGOS DE TU EX","registered_at":"2026-06-06T05:03:18Z","spotify_id":"4oX0TqBQPXiC56ToCKFzah","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996facc60490baee09377a565060f2a191c66e965c4a7fb3b51d9be460ab9a94. 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/4oX0TqBQPXiC56ToCKFzah.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/4oX0TqBQPXiC56ToCKFzah.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af7465a7cdb092871d229a85366ecf2284e8d02abe85a792db6e8e25f98a108. 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/07iWktWh4X7f78R7CkpwNs.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/07iWktWh4X7f78R7CkpwNs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2447ed78386bc563519ce63265ae5c6f1f47a768ed9a31347d227eb65692fba. 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/4qywP1H8P8MGnMTp1ztMqk.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/4qywP1H8P8MGnMTp1ztMqk.
Ay Equis, Nada Que Ver... (Pinche Raza Igualada)
{"copyright_id":"0x374cf5d31cf3c0b5e970800357a9f4f1fd5bcabbcc929c42d77556e07829c2ae","isrc":"FRX762333613","name":"Ay Equis, Nada Que Ver... (Pinche Raza Igualada)","registered_at":"2026-06-05T06:13:47Z","spotify_id":"4gXv8ukCY5oIpzVMMfSFAi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374cf5d31cf3c0b5e970800357a9f4f1fd5bcabbcc929c42d77556e07829c2ae. 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/4gXv8ukCY5oIpzVMMfSFAi.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/4gXv8ukCY5oIpzVMMfSFAi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841383031be05684a7f134014638e8c98500798dcf7e4e83c740fa1fb96c2cdf. 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/0Mg4oouz5ayXis8PQ42Q9E.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/0Mg4oouz5ayXis8PQ42Q9E.
{"copyright_id":"0xcd9855181b5ca216a235a200999ce2de6c85dc33f23c704a971874a143a2c339","isrc":"QZHZ41998326","name":"Aunque a Veces Tenga Miedo","registered_at":"2026-06-09T10:20:26Z","spotify_id":"3NtymRSp0GJUBeiNUk3ZRL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9855181b5ca216a235a200999ce2de6c85dc33f23c704a971874a143a2c339. 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/3NtymRSp0GJUBeiNUk3ZRL.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/3NtymRSp0GJUBeiNUk3ZRL.
{"copyright_id":"0x8a5f6be4b8fba239066ad12b9af77fdf913d7fef50faf22db7d1c2e4e8612078","isrc":"QZHZ41998327","name":"El Mar - Sesión Acústica","registered_at":"2026-06-20T09:43:19Z","spotify_id":"7ztZ1gnNt5UvolAMJ0xb8I","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f6be4b8fba239066ad12b9af77fdf913d7fef50faf22db7d1c2e4e8612078. 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/7ztZ1gnNt5UvolAMJ0xb8I.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/7ztZ1gnNt5UvolAMJ0xb8I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b75b0632f083f31076eb834c1b18c57ba71b00f1c224853fe1426d4d2fa191. 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/3J1h1MEOOJ6UxPsWbjPe0T.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/3J1h1MEOOJ6UxPsWbjPe0T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea166bf1d5e95795de23e17274b7dc24448cfa423e092b942860952a2188aec8. 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/7GbdW91N8bOaKutWax0Rok.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/7GbdW91N8bOaKutWax0Rok.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2971ae2ae6ce1a8b5ab17ee190a4cf3bc335a6c51e592e5d5fbde7d5b28f8291. 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/3mq56qSN8bciXcdM7umd1N.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/3mq56qSN8bciXcdM7umd1N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5281cb09b1fc23679ee245cbf7df0fa2b73ece950e585566289e9c2545840f. 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/6QcnBA93F0rIKCGIBb1Ocx.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/6QcnBA93F0rIKCGIBb1Ocx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26886bfa0550c2a2d996938183122451b43af5b8a49ac8878284dcaf91835889. 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/1lEtB3uq56qEjW5XDBQaxV.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/1lEtB3uq56qEjW5XDBQaxV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8b83b66a5380d091dde8bc556d6a7588f2d5341cb95e72855a92148df9d019. 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/5YhDL6xw1UTmNUy1fHYbwQ.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/5YhDL6xw1UTmNUy1fHYbwQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbdc103a7c8e674cdbe2edae79dab26570fcdb5c80e8ca8a92e6365dc9b9726. 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/7HWiFpuxnXuOtQaHnUxMRd.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/7HWiFpuxnXuOtQaHnUxMRd.
{"copyright_id":"0x912b70f0ad08f7407c180e53f4da96897b889467b7caba13724bebd1b901244c","isrc":"US7VG1757382","name":"Préstame un Sentimiento","registered_at":"2026-06-06T06:08:09Z","spotify_id":"62R1DuyEfvPIiiEaYn0TKv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912b70f0ad08f7407c180e53f4da96897b889467b7caba13724bebd1b901244c. 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/62R1DuyEfvPIiiEaYn0TKv.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/62R1DuyEfvPIiiEaYn0TKv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90f47e048ae56f68df6ddf07a7ce4fcfc8a3dee0bae0992b9a01ee4868d5701. 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/78ApqRYRndX6i9PBqXjK9s.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/78ApqRYRndX6i9PBqXjK9s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855e272c573f95af4e1c380461b53a547a0eb9b92d88475da8902dbe4692099f. 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/1KqcSpHB2UxEvbdH0c1B52.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/1KqcSpHB2UxEvbdH0c1B52.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14725779eab6d72df08cc322987e00ea42a709b8cef6ff625f7416a68d478fa. 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/6HWDcvoI6T3BfBueYXFEJr.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/6HWDcvoI6T3BfBueYXFEJr.
{"copyright_id":"0xbb9d6e15e2dcd8d8ea011be80732e8d14d1b3374baf600dcf9ffcd1846aeda64","isrc":"US7VG1549790","name":"Un Lugar Mejor - Acústica","registered_at":"2026-06-11T02:14:49Z","spotify_id":"5rd0A2pYkKAnDlvXicugzf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9d6e15e2dcd8d8ea011be80732e8d14d1b3374baf600dcf9ffcd1846aeda64. 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/5rd0A2pYkKAnDlvXicugzf.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/5rd0A2pYkKAnDlvXicugzf.