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 0x7cf2be2a4bd8ed9f2dbf2dd5809a5ee2303fcdb8c18ec962b7427614565db9ba. 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/71021f6b-a1c0-49e9-bb91-8cc4736e720c.json and https://artists.proofprofile.net/proofs/artist/71021f6b-a1c0-49e9-bb91-8cc4736e720c.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 0x4d721428d5d83f041ac00ba005ed4567a5670759fdc366aa32b6c8d51315042d. 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/1TU1tnDNJabdID5H5k9kdN.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/1TU1tnDNJabdID5H5k9kdN.
{"copyright_id":"0x97dafbb6e07e736af97f7b861867c9985c76a14757ea47c861dfbb22c2bc4b2c","isrc":"BXWSO2000001","name":"Nossa História","registered_at":"2026-06-09T17:35:21Z","spotify_id":"29GcD1l8nZVGPHj4l4UHB0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dafbb6e07e736af97f7b861867c9985c76a14757ea47c861dfbb22c2bc4b2c. 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/29GcD1l8nZVGPHj4l4UHB0.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/29GcD1l8nZVGPHj4l4UHB0.
{"copyright_id":"0x68719fd1b6ebcd97827bd0c8c6a59a2ca5438a00fddc015b4cf17ee70eec6fc9","isrc":"BXKG22302486","name":"Ritmista 1.0","registered_at":"2026-06-01T08:56:23Z","spotify_id":"3ZNjlT5zR0jkEVzSSZCQeJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68719fd1b6ebcd97827bd0c8c6a59a2ca5438a00fddc015b4cf17ee70eec6fc9. 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/3ZNjlT5zR0jkEVzSSZCQeJ.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/3ZNjlT5zR0jkEVzSSZCQeJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f10a5e874bc90c923dfb3e7cbb8349d465440cdd0ed3682ee336cd6109532b. 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/06VHFg61ePkcCQfYFEuz5c.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/06VHFg61ePkcCQfYFEuz5c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40261261ec31acc9815050a056f69e3a0388e2e190a702f01401bcc0fa4e2c22. 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/045ACyALPUiiLbqNyOBS7g.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/045ACyALPUiiLbqNyOBS7g.
{"copyright_id":"0xaebb608dbe7fd7c49ec5dde63910b6c1360d7b80bcbddc7cdcc413d402275020","isrc":"BXKG21900320","name":"Realidade Capotar","registered_at":"2026-06-17T22:29:24Z","spotify_id":"5hQ4ZFr2dxPx36cuB3V07U","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebb608dbe7fd7c49ec5dde63910b6c1360d7b80bcbddc7cdcc413d402275020. 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/5hQ4ZFr2dxPx36cuB3V07U.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/5hQ4ZFr2dxPx36cuB3V07U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08436b1ff614619e7bf11d707dfa482eaa872986302032dba0939de69b9738f. 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/1cwh7w3PZWX04UNrnN8nlr.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/1cwh7w3PZWX04UNrnN8nlr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7581edbe80905b750aeb3eb22813ecd0fd60f804915c349b33c497d858c7984. 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/1yaatV1dcCsi8AVOArk90J.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/1yaatV1dcCsi8AVOArk90J.
{"copyright_id":"0x77570c27db0adefac64346e99ffdc64dc58acce5a58d7b72c47459c36c195996","isrc":"BCSOR2300114","name":"Massagem No Pé","registered_at":"2026-06-10T01:07:40Z","spotify_id":"5lkfTVhbLhADLTMuVLQ0Ej","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77570c27db0adefac64346e99ffdc64dc58acce5a58d7b72c47459c36c195996. 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/5lkfTVhbLhADLTMuVLQ0Ej.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/5lkfTVhbLhADLTMuVLQ0Ej.
{"copyright_id":"0x0062a2e38fcbfdf689eeda0e418f0e8c701eb4c6ecadaa0b58470bccd3a8d2a9","isrc":"BXKG22302793","name":"Tropa do Sem Amor","registered_at":"2026-06-04T13:14:46Z","spotify_id":"5vJDVtIjsKtPBkyCZasEP9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0062a2e38fcbfdf689eeda0e418f0e8c701eb4c6ecadaa0b58470bccd3a8d2a9. 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/5vJDVtIjsKtPBkyCZasEP9.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/5vJDVtIjsKtPBkyCZasEP9.
Quem Me Protege Não Dorme (Papatracks#8)
{"copyright_id":"0x324b4f1cc59d189ea528a7e5fe3a403e0ba5462e28d1dd8ea1e92fab150b1e9c","isrc":"BR5TG2200002","name":"Quem Me Protege Não Dorme (Papatracks#8)","registered_at":"2026-06-04T10:57:14Z","spotify_id":"0nW89XeE8gQfojNJn7PDhx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324b4f1cc59d189ea528a7e5fe3a403e0ba5462e28d1dd8ea1e92fab150b1e9c. 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/0nW89XeE8gQfojNJn7PDhx.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/0nW89XeE8gQfojNJn7PDhx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aa9712a68a0b704229e1f363a5d06fb483044a47761dd7f5523a5ac780eb19. 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/3J5INndfEjt8UWiQ6BSgFe.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/3J5INndfEjt8UWiQ6BSgFe.
{"copyright_id":"0xbc242b37ee971a32e0ef0acea6da089e83a8e3d03b394084c08cf233b7b7b6bc","isrc":"BXKG22301209","name":"Quem Me Protege Não Falha","registered_at":"2026-06-04T11:12:33Z","spotify_id":"38JcKadsrfxVzU8kVI6E1d","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc242b37ee971a32e0ef0acea6da089e83a8e3d03b394084c08cf233b7b7b6bc. 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/38JcKadsrfxVzU8kVI6E1d.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/38JcKadsrfxVzU8kVI6E1d.
{"copyright_id":"0x1dabb6135c63e5b574e1c12bb866ceb90e2a256faa9acce10f9d6b3582f71383","isrc":"BXKG22300849","name":"Sonhos e Planos","registered_at":"2026-06-04T09:07:33Z","spotify_id":"34uQaKsFD3YG5D7jyF7pZp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dabb6135c63e5b574e1c12bb866ceb90e2a256faa9acce10f9d6b3582f71383. 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/34uQaKsFD3YG5D7jyF7pZp.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/34uQaKsFD3YG5D7jyF7pZp.
{"copyright_id":"0x0bdbf10ff655eac3f8228a8ac6fdd67af9954bc1d10b5c8520c90e57ee08dd77","isrc":"BXG6R2300268","name":"Nóis é Gold","registered_at":"2026-06-07T11:41:35Z","spotify_id":"1znIukYTYjjOgcfleTnX99","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdbf10ff655eac3f8228a8ac6fdd67af9954bc1d10b5c8520c90e57ee08dd77. 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/1znIukYTYjjOgcfleTnX99.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/1znIukYTYjjOgcfleTnX99.
{"copyright_id":"0xa369a087410f9e310fb47cb28de8e6924c7bb7fd4fb569c90f98d55cca0f0d18","isrc":"BRWMB2300635","name":"Flores de Plástico","registered_at":"2026-06-04T08:17:50Z","spotify_id":"7iCvXjYGNFwQd7sK4sOTOW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa369a087410f9e310fb47cb28de8e6924c7bb7fd4fb569c90f98d55cca0f0d18. 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/7iCvXjYGNFwQd7sK4sOTOW.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/7iCvXjYGNFwQd7sK4sOTOW.
{"copyright_id":"0x0c1ff377ffcc4571e5853d93817eb1ebce5f42f83446a14b0838f976b4efa333","isrc":"BXKG22401996","name":"Nóis É os Cara 2","registered_at":"2026-06-05T20:43:53Z","spotify_id":"7scUgGGgyKaDLEXK9EYPWi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1ff377ffcc4571e5853d93817eb1ebce5f42f83446a14b0838f976b4efa333. 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/7scUgGGgyKaDLEXK9EYPWi.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/7scUgGGgyKaDLEXK9EYPWi.