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 0xff7288850588e923ccc542aece8066fc42912bff688c94daff97d6d10f7ccbf7. 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/0f9d3b7c-f3ff-4750-b0bd-7a829255d4d4.json and https://artists.proofprofile.net/proofs/artist/0f9d3b7c-f3ff-4750-b0bd-7a829255d4d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xeef4a45c29a6a2cd1f3c22324ecbfe04a54a5ffa0e0ebad22b9e667e654231c2","isrc":"QZS7J2201312","name":"¿Quién Dijo Miedo? (Worship) [En Vivo]","registered_at":"2026-06-08T04:05:19Z","spotify_id":"7lQELiIYtcnVcxp7xXGknf","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 0xeef4a45c29a6a2cd1f3c22324ecbfe04a54a5ffa0e0ebad22b9e667e654231c2. 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/7lQELiIYtcnVcxp7xXGknf.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/7lQELiIYtcnVcxp7xXGknf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9507550eb61f0988414da7307af0f1f83e57969e1556dfffea1b8eb430ba17. 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/5km2YwJFzxyE0mI7q5ulY9.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/5km2YwJFzxyE0mI7q5ulY9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd9adec815ca155185189cea385ea1bdb60a5f7dc5895902c0e20946c9c4e1b. 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/2lgIUOpqLN1UkuL0FPtx8b.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/2lgIUOpqLN1UkuL0FPtx8b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d51f7419e10d96f54d144dfe7a53a62a7195c398852645134a6ef0f8aead396. 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/7zXQ4PtAeKUHzsYmcOMOqm.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/7zXQ4PtAeKUHzsYmcOMOqm.
{"copyright_id":"0x5016ff233c8bd96427e88ece5b95d8d46ebbe60a53797aa6f77a687f3f1fbdec","isrc":"QZTLA2221241","name":"Me Llamas (Remix)","registered_at":"2026-06-04T11:18:47Z","spotify_id":"45GRXDjpg41oHCtnrzaAt7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5016ff233c8bd96427e88ece5b95d8d46ebbe60a53797aa6f77a687f3f1fbdec. 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/45GRXDjpg41oHCtnrzaAt7.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/45GRXDjpg41oHCtnrzaAt7.
{"copyright_id":"0x24e5f6121593a37c508c715ac87efd5cab31b748d55cb86c75396ef2d04137da","isrc":"US3DF2112003","name":"Amor Que Nunca Cambia","registered_at":"2026-06-07T07:59:01Z","spotify_id":"2D5RY9EzqvYUvsDC5vFqvk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e5f6121593a37c508c715ac87efd5cab31b748d55cb86c75396ef2d04137da. 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/2D5RY9EzqvYUvsDC5vFqvk.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/2D5RY9EzqvYUvsDC5vFqvk.
{"copyright_id":"0xedbde41f0baf570781db5748f5bb0c4ec270684da569cd168cf228002f5b4f7f","isrc":"QZS7J2338083","name":"Amor Tan Bonito","registered_at":"2026-06-07T01:24:23Z","spotify_id":"2XUL1w2IYVhKeeXkOu3zQX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbde41f0baf570781db5748f5bb0c4ec270684da569cd168cf228002f5b4f7f. 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/2XUL1w2IYVhKeeXkOu3zQX.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/2XUL1w2IYVhKeeXkOu3zQX.
{"copyright_id":"0xdb410adb63e27cf3edaa044f5ef7b8ea48f56a32efa0c98f456b7c9864da950b","isrc":"QZNJX2438223","name":"Buenas Noticias","registered_at":"2026-06-05T15:28:35Z","spotify_id":"3tMeipdhfCC6NcoyutI5yA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb410adb63e27cf3edaa044f5ef7b8ea48f56a32efa0c98f456b7c9864da950b. 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/3tMeipdhfCC6NcoyutI5yA.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/3tMeipdhfCC6NcoyutI5yA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1968e43d49444847292c1cee26800a69c06afa0de78e32d064a049494c0362cf. 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/4WlQn8EhFqpI8l8cddSQMZ.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/4WlQn8EhFqpI8l8cddSQMZ.
{"copyright_id":"0x73aa939c19e1fdc75fbd4ea703627307a9c84ab94301f9c1b9007b77a757898d","isrc":"QZGLM2449914","name":"Seguir Vale La Pena","registered_at":"2026-06-06T11:09:01Z","spotify_id":"1VuDgj21Bp4PBlVtZCxsaz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73aa939c19e1fdc75fbd4ea703627307a9c84ab94301f9c1b9007b77a757898d. 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/1VuDgj21Bp4PBlVtZCxsaz.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/1VuDgj21Bp4PBlVtZCxsaz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32433978a5bc36ceac374416e810965293a823fa63335159ce8610831721b9ca. 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/3mKi4cpnLfGiL9cmNG2x8c.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/3mKi4cpnLfGiL9cmNG2x8c.
{"copyright_id":"0xbbd6094ccc3f9a020f5bb5c3da053fea8b30b1db6a3e9f515f13d05ae0e87028","isrc":"QZNJX2432458","name":"Fuera De Línea","registered_at":"2026-06-07T05:46:14Z","spotify_id":"3ieQt7DXN4IJguw2gdTOuu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd6094ccc3f9a020f5bb5c3da053fea8b30b1db6a3e9f515f13d05ae0e87028. 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/3ieQt7DXN4IJguw2gdTOuu.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/3ieQt7DXN4IJguw2gdTOuu.
{"copyright_id":"0x2e49e3295cb4f72f93c4c7991e744ebf8fdcb5720f20d138722950aae1edc4f5","isrc":"QZNJX2438225","name":"Faltabas Tú","registered_at":"2026-06-07T01:03:28Z","spotify_id":"7olDedNGU4IQqHXJzJNRtW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e49e3295cb4f72f93c4c7991e744ebf8fdcb5720f20d138722950aae1edc4f5. 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/7olDedNGU4IQqHXJzJNRtW.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/7olDedNGU4IQqHXJzJNRtW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9c5a01f774ad921d60cf25558c714d5745eac569c8ec3a871fccf69f07b023. 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/1UJqQreQdqsi311cHtt581.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/1UJqQreQdqsi311cHtt581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd60bd8e4c1ba5c128f31afa360f8145f479ed587da6809011b4176009136f8. 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/4XA9yMFXGXG2rmWLZxjZR2.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/4XA9yMFXGXG2rmWLZxjZR2.
{"copyright_id":"0x8f73a3a3750cc3c04c7dbad6064ab9dff5eb038860cad37cdb1350c8ed226611","isrc":"QZNJX2438228","name":"Nada Sin Ti","registered_at":"2026-06-04T16:50:54Z","spotify_id":"7JNvaZ6ODRUsPi9R4C5fCP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f73a3a3750cc3c04c7dbad6064ab9dff5eb038860cad37cdb1350c8ed226611. 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/7JNvaZ6ODRUsPi9R4C5fCP.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/7JNvaZ6ODRUsPi9R4C5fCP.
{"copyright_id":"0xa36c15936d056fa653287d19e427b65ac40e21e4db5c380d7c9c4daf85689e13","isrc":"QZNJX2438229","name":"Dame De Beber","registered_at":"2026-06-09T07:50:57Z","spotify_id":"1PmUSUppWJYRsjKYsLRkGN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36c15936d056fa653287d19e427b65ac40e21e4db5c380d7c9c4daf85689e13. 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/1PmUSUppWJYRsjKYsLRkGN.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/1PmUSUppWJYRsjKYsLRkGN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d0d3766ffdd96f4c7a77928e0ec2964fcb3058f683518539abb704a924137e. 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/14uv317XWwPYE4CYO9StrT.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/14uv317XWwPYE4CYO9StrT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ad5e18cf2b271f3ec9103ae656bb45e28461657187a89166d078d8d8272d27. 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/1oH75Ndu1najIJ1YwJE6vZ.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/1oH75Ndu1najIJ1YwJE6vZ.