1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005844944c2a141ec68afa3ce92650d6bbb7e7b0d3f1b33aad455b5d63329c62. 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/166d4479-18b4-4383-b08c-0cc8776d1bbc.json and https://artists.proofprofile.net/proofs/artist/166d4479-18b4-4383-b08c-0cc8776d1bbc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sem Razão (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Luís Severo, Modernos, Rapaz Ego, Reis da República & ZARCO)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696973947e7b5656c10d242998ae362d05346bf8bf321908840409e1364cb96d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000131.
Tou na Moda (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5314b92282bb22ae315fd9e7c417f3989a3e868bd04742415e46d8d44b17a4f3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000139.
Má Vontade (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7131bf9b2834477b6d797860a7a81e115954235f4176804cb9444cfc3006a6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:01:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000134.
Travessia (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Luís Severo, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d65606be80fe6368c9583d4331389f43be0fdcfe1269be052166741c7211eb0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000137.
Liberdade (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf125551a44860095cc35a047635130bff2d1af9645768915215189f122e3a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000135.
Proporções Bíblicas (Absolutamente à Porta) (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531819a5c854a4d59b9e0c5d94162163c4f89b616884fd6ff65a3cdc767fda32. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000130.
Se Algum Día (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca36c9c90ff21d34104e6c422193bdd01296788b09e3ce49a33854d4f1515ae. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000133.
Casa Andante (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048f94e6432045792d5e0a7d9c72806aa57d28984ee8115ca5707cb58125cb81. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000138.
Os Amigos (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f160a3269138fc7fda040158bace0e06eea6f6b157a432b08f18a25b118d3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY2000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9765d2cc634f37d4f079f410723a785fe71a8d04fdfaa0b4a949a3afba6155. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152c904f69289a681b3791427e68fc5b530490c554024912dddd14fcc623e8c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c5b2b1c5de6a13a0fdd84052f366b40708dd2cdbff9a75256d11cbfcfaa2ac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccee514607723bf279dc8203c9190fe75f893d0317b402acfbc790dc3eef0a85. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3e7c9ba6cc0100aa7eb3941e0f92c270781570d3ce63dc4021b05d9bee101e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1c12bfe2d89414e9f01de36ba1f99ec8df014251de3680e8d0e8cbd7f78a3f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db4581ddb077c384ab1d6207ee32e3ed69c954f36c86614e48a22846dddfc24. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f7efa36d07d7a5b871f25ccf5b02c4e6daaa24cb8c6979d2c5aa28fdca6d6d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc46da98ad3392fb3a3df015813aee9d17844f520c8109afdd48ffb300980e8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda81201b4911efcdc71b6cd64a0bed9271e3ea67fa02d82353b74ca8abb2e27. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40c38a6593a478efa0bba38471c116236765c8f1c7d6d5309320e7864207845. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdef3710b291197850cfadb6e801c1e9253585b1e9dece1fc444479aca293da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f5860ca26fbb883102faa388a792724fdb9f0f0b7c0910b663e2ce9efdc8ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dee2f170b05d903821e2fcce6697708b7042d5435d19c28dd1075061d517b12. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca6e9a36553dd6db5b2e110aa573fb644a3cdbf8a58fb7217bcba29e60e5a48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfb0880f08ddd52fac37eb4ac0b1d8c30908cefbd11dd2cf3f57524525d4fc7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a34de7f942d788eb5f32125401cee8c6caf73d2888b2a57a232d23b4b3678ab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea3e7270a80a744da5af4fb898f35a44334c0c6557ed2026b2150f3bf68c8e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1604586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585ba27c315146431c82cd9d6e993d2d92af776c4b7e2b3096458dcaf96196bd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1604587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b01227f8503c2024ce1ceda7c01e9180e3e2e358d44c62bd450dda19a5b8aed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1604588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd202d04dd38fb827165121d1eceec16d7f88c4c7c24a254fa7b16fe0da456bd3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1604589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eec0f714164627f9d797e42d55476d57caf5015d285fb2f3d4e8a795dedbb24. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1604593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3e061380c9fbafb5c2fbae6e342a04a28263d2c4e70fe2b50e3375a61b9e20. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2382352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aeee4a89e16c88b3af1d6cc1f2974756496565c90bcacce14adb7bf950d345. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0H2312313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c4b59c6513e02f7fab31be788fdb63b1c5d5954dfd814236ba6f52a6c8294c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT9EY1900128.