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 0x4ee15adc5b5ae62cf621a6e06c16ad48de5295db482d8744623ff3264ae7a47a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06728b46-5bb7-4eb1-a60e-e5dd9fd58949.json and https://artists.proofprofile.net/proofs/artist/06728b46-5bb7-4eb1-a60e-e5dd9fd58949.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Narigón del Siglo, Yo Te Dejo Perfumado en la Esquina para Siempre
{"copyright_id":"0x5667ff8bfbad13d5fb739b729dcdb80688e92d6c28af6d83dc48b4266f591f9b","isrc":"ARF039901447","name":"Casi Estatua","registered_at":"2026-06-05T09:34:26Z","spotify_id":"5tnaDHQPfaW9FyL4Ao3R6p","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 0x5667ff8bfbad13d5fb739b729dcdb80688e92d6c28af6d83dc48b4266f591f9b. 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/5tnaDHQPfaW9FyL4Ao3R6p.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/5tnaDHQPfaW9FyL4Ao3R6p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19786a4222068f80defc79b04c37059952bd3912efcba3065a0e84bfd3dd89b. 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/0wUFXsXHZc2h6wKRcmJNWF.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/0wUFXsXHZc2h6wKRcmJNWF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618ad1bfe8e9d5a3d3b4f22827cb2b73927e9d016a313ac8b3c0555358b83697. 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/112BYiABeTmIti5p8U1wWG.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/112BYiABeTmIti5p8U1wWG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a06f84972dabfbc2224a39a63af4a32cff591447216e10bdb844168316a90a. 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/73m6ePlcl6zDPsNVq5ISv0.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/73m6ePlcl6zDPsNVq5ISv0.
{"copyright_id":"0xed76aef04cff79abf8ef20173043acc90ef140396b9fb7c44a42f44107cdad83","isrc":"ARF039901451","name":"Spaghetti del Rock","registered_at":"2026-06-01T11:21:39Z","spotify_id":"6rg1MBZqggsQ5olFGTw0rr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed76aef04cff79abf8ef20173043acc90ef140396b9fb7c44a42f44107cdad83. 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/6rg1MBZqggsQ5olFGTw0rr.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/6rg1MBZqggsQ5olFGTw0rr.
{"copyright_id":"0x0198c6eeea3e9cedd37aa868d55b1bba4b839e0705a17ead521c917cec317ee7","isrc":"ARF039901452","name":"Elefantes en Europa","registered_at":"2026-06-05T06:50:27Z","spotify_id":"6az0b2MBePax2Ha2KGBxNe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0198c6eeea3e9cedd37aa868d55b1bba4b839e0705a17ead521c917cec317ee7. 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/6az0b2MBePax2Ha2KGBxNe.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/6az0b2MBePax2Ha2KGBxNe.
{"copyright_id":"0x721a16d7045bf8e0004438dd454f2ebc82d1b86f4cb11fe5f1cb33544ea2dfb0","isrc":"ARF039901453","name":"Vida de Topos","registered_at":"2026-06-05T22:23:07Z","spotify_id":"7hRXRWuhgj9FjiIPPaKIwz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721a16d7045bf8e0004438dd454f2ebc82d1b86f4cb11fe5f1cb33544ea2dfb0. 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/7hRXRWuhgj9FjiIPPaKIwz.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/7hRXRWuhgj9FjiIPPaKIwz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fc2772145d82e5eee2aa1a1ee935056452b4166b1626be5cba03f8b7d8e71a. 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/0G1pJ1Ipi7owUXxfm4Amkd.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/0G1pJ1Ipi7owUXxfm4Amkd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da8777f010d73369d2ef5430a1b54fe50901cb77672accc1337a70013364533. 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/3EissuXjQZQrjpHh8gRCG1.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/3EissuXjQZQrjpHh8gRCG1.
{"copyright_id":"0xab0ea57658fbf1b331137b3e32c2b25d40bc5d27fd842617a034daafdffbc924","isrc":"ARF039901456","name":"Sopa de Tortuga","registered_at":"2026-06-08T01:14:08Z","spotify_id":"0Ufpfnqc5mB9pUZjhY5WMA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0ea57658fbf1b331137b3e32c2b25d40bc5d27fd842617a034daafdffbc924. 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/0Ufpfnqc5mB9pUZjhY5WMA.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/0Ufpfnqc5mB9pUZjhY5WMA.
{"copyright_id":"0x0e323a1084eff56fcadd930275e30b5de102674a7991b15cce599b2b1de34b0a","isrc":"ARF039901457","name":"Pasiones Zurdas Derechas","registered_at":"2026-06-08T05:22:15Z","spotify_id":"1kXDNk35zm5GpsNXyMDLc5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e323a1084eff56fcadd930275e30b5de102674a7991b15cce599b2b1de34b0a. 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/1kXDNk35zm5GpsNXyMDLc5.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/1kXDNk35zm5GpsNXyMDLc5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6254c6b7d86fdd4694b931988272c7d782d74027a548bcee78df94249327ff. 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/67ltNH27HhavZ4cwWVRUYM.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/67ltNH27HhavZ4cwWVRUYM.
{"copyright_id":"0x9349e1aaa30f239ad9365dd8bbf2e7648fefc06b7ce9cca6969ecb1c85d7d1cb","isrc":"ARF039901459","name":"La Firma del Opa","registered_at":"2026-06-10T06:45:26Z","spotify_id":"2cyOCKsxerJhCr75peZzxB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9349e1aaa30f239ad9365dd8bbf2e7648fefc06b7ce9cca6969ecb1c85d7d1cb. 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/2cyOCKsxerJhCr75peZzxB.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/2cyOCKsxerJhCr75peZzxB.
Rock de Mi Ciudad - Rockin' Buenos Aires
{"copyright_id":"0xed76aef04cff79abf8ef20173043acc90ef140396b9fb7c44a42f44107cdad83","isrc":"ARF039901451","name":"Spaghetti del Rock","registered_at":"2026-06-01T11:21:37Z","spotify_id":"0Iy8PmQkSG5hgSoYpbzv9m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed76aef04cff79abf8ef20173043acc90ef140396b9fb7c44a42f44107cdad83. 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/0Iy8PmQkSG5hgSoYpbzv9m.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/0Iy8PmQkSG5hgSoYpbzv9m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf513c843d777449fec586487e5ab405715d7f0a6f358ee9e276f73d0d16c2861. 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/2UOJsDtVLCdSbwbhd2qSl3.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/2UOJsDtVLCdSbwbhd2qSl3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9995f29c02a1ea35d536b02cbe4ff902e3a8682bc914f1cce79f8db733429af7. 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/4ilXuNlP1PaydiuqPHa3og.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/4ilXuNlP1PaydiuqPHa3og.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9802f319304afc533115de90c0ecc8d55d9d6f23b65ac6e3c4f8dc61e82e7b. 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/2NO3hNPuxuhIjFNoS9oFIL.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/2NO3hNPuxuhIjFNoS9oFIL.
{"copyright_id":"0xc9daae10fe29309aad950eef955142c62b9668a6ecd1aa3d75ae1627a69c2071","isrc":"AR3692300015","name":"Cuadros Colgados","registered_at":"2026-06-07T14:30:25Z","spotify_id":"1QLs6BPNQxorXtxWjebwyg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9daae10fe29309aad950eef955142c62b9668a6ecd1aa3d75ae1627a69c2071. 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/1QLs6BPNQxorXtxWjebwyg.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/1QLs6BPNQxorXtxWjebwyg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334199827e12f0c890c85aa227da8b0fd09aa268aa8cc00b71d1f967dd84e374. 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/1JOFjTeP8zJfPF0iU0mXrm.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/1JOFjTeP8zJfPF0iU0mXrm.