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 0xe246db91c13ea491af2356a3bd859dce3a31b8728a4a33ad2e2ca3b363665ddd. 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/a7443aeb-ca37-47f6-ba82-38b851d5e437.json and https://artists.proofprofile.net/proofs/artist/a7443aeb-ca37-47f6-ba82-38b851d5e437.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xebc8d6dd3798bac1e0aed9f7077367f7f203e57e1885c1cb64d14c54a97f7a7c","isrc":"BRU5R1100008","name":"Sambinha Bom","registered_at":"2026-06-04T13:44:47Z","spotify_id":"1xq3gzx4fZktCirj2oSzkA","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 0xebc8d6dd3798bac1e0aed9f7077367f7f203e57e1885c1cb64d14c54a97f7a7c. 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/1xq3gzx4fZktCirj2oSzkA.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/1xq3gzx4fZktCirj2oSzkA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af729b9f635f41320e91e7a213a5e75274335b2c3c5186a1da729e9328330ab. 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/0RLqvUS16BnHChpcLy9DYJ.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/0RLqvUS16BnHChpcLy9DYJ.
{"copyright_id":"0xf48bf462a68be8953749430e3481c8eba002695eb6e8f3b2b1f5d90f31f4e07c","isrc":"BXBMG2100001","name":"Só Pensando Em Você (Bonus Track)","registered_at":"2026-06-05T11:15:29Z","spotify_id":"6Qxdu9D8ZaNcFY221sHLsQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48bf462a68be8953749430e3481c8eba002695eb6e8f3b2b1f5d90f31f4e07c. 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/6Qxdu9D8ZaNcFY221sHLsQ.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/6Qxdu9D8ZaNcFY221sHLsQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b08b07290d1dcd997764eb0ebb2782d0d4fc6582855029e836009b1e94640dd. 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/3Y6rqC8tCu9VcfNilZ344S.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/3Y6rqC8tCu9VcfNilZ344S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643e6a4518768ecd6ad8b873981b69825ac3536720efaa1d04111cf4963ca5c6. 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/7CZWpdYINPXNHKhqCKgEMz.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/7CZWpdYINPXNHKhqCKgEMz.
A Tribute To The Beatles '69, Vol. 2: O Outro Lado da Abbey Road
Com a Ponta Dos Dedos (feat. Marcelo Camelo e Mallu Magalhães)
{"copyright_id":"0x06387fc86912cd9e6ade40f83f40ed6a94a0fe7b03a8c5e715f0a45e05ff55ba","isrc":"BRM631100015","name":"Com a Ponta Dos Dedos (feat. Marcelo Camelo e Mallu Magalhães)","registered_at":"2026-06-17T22:38:36Z","spotify_id":"71eoDJgH8HaxcN19kIX8OD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06387fc86912cd9e6ade40f83f40ed6a94a0fe7b03a8c5e715f0a45e05ff55ba. 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/71eoDJgH8HaxcN19kIX8OD.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/71eoDJgH8HaxcN19kIX8OD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f55bfaf1eaf7a3d1d304c720980777a92f25a694b2f13fef1b77c8e135965e4. 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/22QtqOOwAShcEEYgEcQvki.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/22QtqOOwAShcEEYgEcQvki.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70781ce6f191b687496f04b07683f50b05809dfc8261ca2ab0901ea92b4d431. 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/2vG00zjTYEmxa4xH8qQ01q.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/2vG00zjTYEmxa4xH8qQ01q.
{"copyright_id":"0xb4cf85a50ed34158cf997164cea3677743e867f0ec82db6af02b10e0391d15e9","isrc":"US7VG1526203","name":"Tropicalea Jacta Est","registered_at":"2026-06-08T03:54:09Z","spotify_id":"4dBmqHBmN4hipn2h6GUqRq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cf85a50ed34158cf997164cea3677743e867f0ec82db6af02b10e0391d15e9. 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/4dBmqHBmN4hipn2h6GUqRq.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/4dBmqHBmN4hipn2h6GUqRq.
{"copyright_id":"0xdef5c0f844b8b6aac9dcb0966d94dea05ad9bde44f062a9efcb2d010862b0a6d","isrc":"US7VG1526204","name":"O Motobói e Maria Clara","registered_at":"2026-06-18T02:37:03Z","spotify_id":"6n4n8jwvYQBgPWmw4BjH5X","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef5c0f844b8b6aac9dcb0966d94dea05ad9bde44f062a9efcb2d010862b0a6d. 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/6n4n8jwvYQBgPWmw4BjH5X.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/6n4n8jwvYQBgPWmw4BjH5X.