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 0xa1215993ef0db8213e3a93c5fd45be25ed287e1cba5b2efb469e848536757649. 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/ac7a2b87-40ee-4b5f-9648-6c5c75487f3d.json and https://artists.proofprofile.net/proofs/artist/ac7a2b87-40ee-4b5f-9648-6c5c75487f3d.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 0x41d7565fc8e9195c9ef7966f83b0aeae02736c45351c850247544ec938131051. 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/1ly43YD4MNXwcr7a3282gc.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/1ly43YD4MNXwcr7a3282gc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e110f82236d63011eea6e8d344f8126f1f3b5035b35b61865633f2a1fca836c. 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/2S3qyxxudy0KdrY82x04Kp.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/2S3qyxxudy0KdrY82x04Kp.
{"copyright_id":"0xefd8f9d144d35ec35092b8dbb153d9b5e20a5a018c2a2ed5280f3666b66c3ce7","isrc":"BRWMB2400740","name":"Geração Fazendinha #3: Caipirinha","registered_at":"2026-06-07T07:35:46Z","spotify_id":"0BvhGMRhuQSdissGQFdYFi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd8f9d144d35ec35092b8dbb153d9b5e20a5a018c2a2ed5280f3666b66c3ce7. 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/0BvhGMRhuQSdissGQFdYFi.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/0BvhGMRhuQSdissGQFdYFi.
{"copyright_id":"0x94b74c544e6591842f447da5b22818f3e5c63e7ccbeb06a5c8373a498460ea5e","isrc":"BRWMB2400742","name":"Se o Amorzinho Não Muda","registered_at":"2026-06-10T17:41:09Z","spotify_id":"7wpSYWDIQdway8KCG037GE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b74c544e6591842f447da5b22818f3e5c63e7ccbeb06a5c8373a498460ea5e. 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/7wpSYWDIQdway8KCG037GE.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/7wpSYWDIQdway8KCG037GE.
{"copyright_id":"0xdd86005e0d685d3f2b62c3642b5f3e9e124b09e1791ff3f8fd8e875b5062a8dc","isrc":"BRWMB2400744","name":"Última Noite da Gente","registered_at":"2026-06-09T08:30:39Z","spotify_id":"6Tyk7OnDoVTgZJWJIqqCMS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86005e0d685d3f2b62c3642b5f3e9e124b09e1791ff3f8fd8e875b5062a8dc. 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/6Tyk7OnDoVTgZJWJIqqCMS.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/6Tyk7OnDoVTgZJWJIqqCMS.
{"copyright_id":"0xd527e699357d19133a394f5eb11f73328aa5a4b488ce59c2e87d42eaf2ad54d1","isrc":"BRWMB2400743","name":"Blogueirinha do Agro","registered_at":"2026-06-11T02:55:30Z","spotify_id":"4nDMv1aFyeUCrhf7SMibFx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd527e699357d19133a394f5eb11f73328aa5a4b488ce59c2e87d42eaf2ad54d1. 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/4nDMv1aFyeUCrhf7SMibFx.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/4nDMv1aFyeUCrhf7SMibFx.
{"copyright_id":"0x5999aff20aff01613843b432faccdab63837c5ea51a929b947a16f123f8add9d","isrc":"BRWMB2400741","name":"Chica Perversa","registered_at":"2026-06-18T00:56:42Z","spotify_id":"2hzWvr3c1IM1jGyUK2Lcm7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5999aff20aff01613843b432faccdab63837c5ea51a929b947a16f123f8add9d. 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/2hzWvr3c1IM1jGyUK2Lcm7.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/2hzWvr3c1IM1jGyUK2Lcm7.
{"copyright_id":"0x94b74c544e6591842f447da5b22818f3e5c63e7ccbeb06a5c8373a498460ea5e","isrc":"BRWMB2400742","name":"Se o Amorzinho Não Muda","registered_at":"2026-06-10T17:41:09Z","spotify_id":"6bf9XtU8Z8Mjlvhq9BrGpW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b74c544e6591842f447da5b22818f3e5c63e7ccbeb06a5c8373a498460ea5e. 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/6bf9XtU8Z8Mjlvhq9BrGpW.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/6bf9XtU8Z8Mjlvhq9BrGpW.
{"copyright_id":"0xbf366be4c71edc995b53f5084d5697cfee6fc9dbe5f8b0b5b2b7e6c3a45fbf06","isrc":"QZNJV2419776","name":"Disk Saudade - Remix","registered_at":"2026-06-19T11:27:50Z","spotify_id":"5UvTCdZBExy2bpxApjDIKN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf366be4c71edc995b53f5084d5697cfee6fc9dbe5f8b0b5b2b7e6c3a45fbf06. 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/5UvTCdZBExy2bpxApjDIKN.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/5UvTCdZBExy2bpxApjDIKN.
{"copyright_id":"0x693f9d058751c4319743904c2c2d9ff1d8c1aca4d11749b2d7ca9d2e1b28ef02","isrc":"QZ5AB2471405","name":"Gostosinho e Ordinario - Ao Vivo","registered_at":"2026-06-20T06:23:24Z","spotify_id":"113cAvoaD4ABNIh5p0q0d6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693f9d058751c4319743904c2c2d9ff1d8c1aca4d11749b2d7ca9d2e1b28ef02. 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/113cAvoaD4ABNIh5p0q0d6.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/113cAvoaD4ABNIh5p0q0d6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68533358d284cde828fff8fa21d0aab5e91265ee00e324d4653b497265a9993. 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/2ZsTKjpjIvdNksq4dD2GLx.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/2ZsTKjpjIvdNksq4dD2GLx.
{"copyright_id":"0x1f60ecd918fc6d9d40d2a238a4fca0f7cceb35b408088dbccc54e85e2a06dab2","isrc":"US7VG2414608","name":"Ô Novin","registered_at":"2026-06-20T06:24:42Z","spotify_id":"6j1D8WHcTn8dS3aEVx3UpG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f60ecd918fc6d9d40d2a238a4fca0f7cceb35b408088dbccc54e85e2a06dab2. 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/6j1D8WHcTn8dS3aEVx3UpG.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/6j1D8WHcTn8dS3aEVx3UpG.
{"copyright_id":"0xdd5d55b46fd4bea738ab1bb8ece2d75bf4a0a8332f3289b3044320cbe132f957","isrc":"QZTVM2349086","name":"Príncipe Encantado","registered_at":"2026-06-05T08:03:15Z","spotify_id":"2dQUPbqIvyhXiExIovBfMJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5d55b46fd4bea738ab1bb8ece2d75bf4a0a8332f3289b3044320cbe132f957. 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/2dQUPbqIvyhXiExIovBfMJ.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/2dQUPbqIvyhXiExIovBfMJ.
{"copyright_id":"0xde5e440ec601f7c90e4507af1633b9e78035fd90f1ec6793fd42b23a4ff21ae0","isrc":"BCX5C2300013","name":"Gostosin Demais","registered_at":"2026-06-17T04:13:12Z","spotify_id":"2XKDBkcYKqHdC0dx6CtywQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5e440ec601f7c90e4507af1633b9e78035fd90f1ec6793fd42b23a4ff21ae0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:31:03Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2XKDBkcYKqHdC0dx6CtywQ.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/2XKDBkcYKqHdC0dx6CtywQ.
{"copyright_id":"0xf909341097a96ce61c6c15d27edade16ad00b7d29f6cd96dd7c9420657eeeed4","isrc":"QZNJY2380839","name":"Cachorro - Remix","registered_at":"2026-06-10T15:45:44Z","spotify_id":"123xOERZ6T6RJT9xDwrLGZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf909341097a96ce61c6c15d27edade16ad00b7d29f6cd96dd7c9420657eeeed4. 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/123xOERZ6T6RJT9xDwrLGZ.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/123xOERZ6T6RJT9xDwrLGZ.
{"copyright_id":"0x4a514b3ed8477838550779c0ee1fad5eb6d57110b96ee2300f4b71fa20f4455e","isrc":"QZNJW2382760","name":"Revoada das Gurias - Ao Vivo","registered_at":"2026-06-21T18:16:57Z","spotify_id":"2hWxfrUrtWX4TCk1k9rWpk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a514b3ed8477838550779c0ee1fad5eb6d57110b96ee2300f4b71fa20f4455e. 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/2hWxfrUrtWX4TCk1k9rWpk.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/2hWxfrUrtWX4TCk1k9rWpk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba443f71bf311e0df0f7d14cabaaa3ae0d92066a10714a15b2887ddcfe9f7d0. 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/5JX0vDUFnVrr6iym4Ius3Y.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/5JX0vDUFnVrr6iym4Ius3Y.
{"copyright_id":"0xbe56521bb77ecc2044df4d86d56cbda5cc30c4c8c7ad60948481f05b550c3c37","isrc":"BCX5C2300007","name":"Fiu Fiu - Ao Vivo","registered_at":"2026-06-10T17:38:09Z","spotify_id":"5ZYp0FKEv6lUKKdfqo1GPr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe56521bb77ecc2044df4d86d56cbda5cc30c4c8c7ad60948481f05b550c3c37. 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/5ZYp0FKEv6lUKKdfqo1GPr.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/5ZYp0FKEv6lUKKdfqo1GPr.
{"copyright_id":"0xcfab71614f58988a385d22a85a546facdfeae01346bf51d66f11db37f6ec824f","isrc":"BCX5C2300003","name":"Cachorro - Ao Vivo","registered_at":"2026-06-04T12:00:58Z","spotify_id":"2kl5AfMntQ80N7E3Yo5ipP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfab71614f58988a385d22a85a546facdfeae01346bf51d66f11db37f6ec824f. 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/2kl5AfMntQ80N7E3Yo5ipP.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/2kl5AfMntQ80N7E3Yo5ipP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bafbab0eb849496811dc590e1d0e5f96a0c740c14303146e273d497be3fd13. 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/63TwRG3lDa66CZExRkuyUm.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/63TwRG3lDa66CZExRkuyUm.
{"copyright_id":"0xb795eeed21ce1b0dbce30bc6f58b72576e5d5403d383234169da53e0be3131d7","isrc":"BCUG22100004","name":"Cê Complica - Ao Vivo","registered_at":"2026-06-24T13:33:55Z","spotify_id":"7x1KwQ7irFPckrlhjTe0TY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb795eeed21ce1b0dbce30bc6f58b72576e5d5403d383234169da53e0be3131d7. 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/7x1KwQ7irFPckrlhjTe0TY.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/7x1KwQ7irFPckrlhjTe0TY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acc6743dc4922e78c4a9ac49cd49038d2377860d9902687a05dd4b8e5d55009. 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/7JHobuDmM8n3yx4XCYhRXC.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/7JHobuDmM8n3yx4XCYhRXC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e6361214f8b75ca91e2102fc81c300d67d3861ac307ca6c85558a7c0f7f242. 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/6fAvluSLEtdDJ7B8eQ574r.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/6fAvluSLEtdDJ7B8eQ574r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf3f28c9709c9bb02dbd294f9d8a7956e317ed23068e78de31f0a608bf9a112. 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/4CX8oz7KjjZTBGmHvlBvxy.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/4CX8oz7KjjZTBGmHvlBvxy.