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 0x5a9e1dda128635b9bb0ac87fcedcdf02631b477efa0e2798dd340ce535dc6447. 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/05fb22fd-c314-469e-8847-7400f3e4df3b.json and https://artists.proofprofile.net/proofs/artist/05fb22fd-c314-469e-8847-7400f3e4df3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nossa Senhora do Brasil (feat. Bruno & Marrone)
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 0x1affdee644388fb6b564c880195519301a85d2b5462fa6c89ceb5e472fa350de. 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/BRSME1500756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1093bda6dfe9f9d2f0a97981912a3952d677148fcae576ace0538d33a3faa255. 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/BRSME1500758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ef29e210f6bdecb4e9eb9780d1a5a5851298ef88e941c7d23863d4d672ac1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRSME1500759.
Maria de Nazaré / Dai-Nos a Benção / 13 de Maio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc91cb2baf6ab46c0f5519dc3946017a7d1ce5cbab10f5d3ad2acd12d04d98b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRSME1500761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d50c1981ca875e7b7f90a7a0fc9018915b2fe5f9afc173e566a4ea18be9b40. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRSME1500764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689ad3f4fdefa91798c8d3bf8ddde00d6fe4199a3ff3db4f74d10b1cc4117da4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRSME1500766.
Reflexão e Benção Divino Pai Eterno / Oração
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3660597c4a2bc515f6ac18ccc176a661487298edcd42e813daa4e016102046. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BRSME1500767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acabad67f4c3a1a3549e8a7ff2fa8ba28f1958de9dcb936a02929bf2fad0d9b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BRSME1500753.
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 0xf53fcd77f939be0f9ca546a77129783f447da09c2c9ed1d40f098419c0ffeffd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRSME1500754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafea24c1491fc6bda8b835c8ffed3d46ce7d17ab27901a3102e3572d75abce40. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRSME1500755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d3c70f4061828e6b424dc47dcde58bb6992340d55d7ca271c90a8efbcdc8ba. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRSME1500757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441a140fea6d6f8c21771c5a6d071983e22dfb1cad5e9e6ee67249153e71a397. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRSME1500760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668b37bff0f943299a77ccbbea6b763793871c461ba2a88a892867a0089cdbfa. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRSME1500762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7302eb3df4e468647559ac38190eab8913dcfb3b1b03dfda92a4c7cecfa55fac. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRSME1500763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b077c8b7b5a6b8a2abc1933286448ebe9cbda423ec2becaca25d33262721456. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BRSME1500765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a03003a41625e0f1ff171380e28edda0555ef9288bcc7b6b337193504a5266. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BRNWU1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8328346e84e29ffefc5f6cd5a2f664e97c71f8ed2c0e8d3a4af3fc560f611. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRNWU1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d652852cb8dacd87ec59146214f499a8c6a0fb4692205307cd000909a0e9e41. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRNWU1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095f75ae6c5285cee75ab75a345171968ae5fb78a34611e5ccd66320fb48e81c. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/BRNWU1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886712c98ebf517eede1f40afcaf37e34fea9d8d5cc81a500e976bd4ddb47636. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BRNWU1300003.