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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02be7fcf414886eb8255fb4245a1b7b246634c2e1062f2990477f5d35371c86. 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/99c77965-825d-4afd-9c2b-4a6b4c566c18.json and https://artists.proofprofile.net/proofs/artist/99c77965-825d-4afd-9c2b-4a6b4c566c18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90abf2dda001087ebe6505e53ac92993d6cb778e871b53249e1083b9314495e. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/BR7EU1100007.
Ao Vivo no Auditório Ibirapuera (Faixas Extras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f80eaaffa6d0af951be87fdf73d0db29e4f0f8a8c2f56f074a2be446ec2128. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:18Z), 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/BR7EU1100011.
Ao Vivo no Auditório Ibirapuera - Faixas Extras
Ao Vivo no Auditório Ibirapuera: Faixas Extras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4c25cc3852f30c56df324e07170cffa7eb481929549b32097e69a4b12a9391. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:21Z), 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/BR7EU1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40af8f0b28f0d8d3cba43d945e959ff00fbdcc8e35ffe66dee29802aa8478773. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BR7EU1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8165be7199398c430d9460102174402389648e0928496fe5dd44e08968b79fa8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BR7EU1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cad9c7f75657a3ada67a8d53e0cfcb8834268fdbfe02e788a60ff22cb01e95. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BR7EU1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9246407740da2ee769a44e9beeb713f7a43eef4e33892f74e928233721eb8f7c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BR7EU1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afd08329eed61dc562622bce020951397bcac41ade35110e62767ba99ec904e. 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/BRUZ21800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a6741992cb617ca53b09a185b9b74f7e3aa532d1cdb7c9eddf228907740336. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRUZ21800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23672519973d2dcaa0f42bb2614a55577a9198e98d7888b8b56c9c106ecd82c4. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRUZ21800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023b11dbb39440bd15e19d243c95cde51a8a896ff1f93a616e2512f35514af50. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BRUZ21800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ace8bd2f6da7ab932488a0a654482496daecde369bf6b395cf016ed55f5b6e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRUZ21800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5227bc4d0ea599dc42fc39a032721fc57bf67b3c459f22aa80b016b76a9ac9f4. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/BXD2W1900011.
5 a seco e OCAM: Outra Noite No Ibirapuera
5 a Seco e OCAM: Outra Noite No Ibirapuera (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbf455e3cdb16bedd1a4ac3960071c379abcd5c87ca538a4f4ab4581c64448. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRRGE1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7959b0042b758b573431823e7b5cecec3ca044539947fbe0c85a51e5218a86c1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRECI1200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8555c01f6abdc1bbf0a1f5788ebae19ecaa1b4fdba3c26816b48ca2b9c6aaf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRKMM1300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e03608e996b4c43254f7cdd08d96c303e250b47844b1d951e4c8781db9bcbd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRF0O1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187f6fe47d7ae0740e73d6a7ffc339c63780b6f6128707fe6f7853009657dcc1. 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/BXPOL2100008.
Mpb Brazil: Brazil, Samba, Bossa Nova And Beyond / A Nova Canção Brasileira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7c8c9f4a3d7a328eb14934ce7d1d7b41e4e54df3e95aa5f3b306d0e991d484. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BR7EU1400011.
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