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 0x029a10fdd7917fae8df6c44c666a1dd57c7ddc9076d173f981f6a8dd6e744ce4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bdfd813-9841-4553-8e3e-e45fe4578865.json and https://artists.proofprofile.net/proofs/artist/4bdfd813-9841-4553-8e3e-e45fe4578865.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 0xf6cb6f03e56a7982bd5248d7d1f8ec54c157b105dc86e8a0beeb0a019072c044. 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/BRSME1200422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5c89b2f0c000d788e3407565bc149f17a30c887f6796c8f04baedfd7846c9e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRMZA1200236.
Jornada Mundial da Juventude Rio 2013 - O Melhor da Música Católica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5c89b2f0c000d788e3407565bc149f17a30c887f6796c8f04baedfd7846c9e. 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/BRMZA1200236.
Força E Vitória - Live From Aterro Do Flamengo,Brazil/2011
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bb04c286562e5ebc2a2544a6bb2f2570f6b018ab432f44814f8dd28821fc2a. 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/BRGKL1100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c31f1f2276265fa3bf6ce12ddeaf044ecbfc41085bd6eb6645bb02f6e7efba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKMSD2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f24853f01b1316e4de8b528652696906d03579e031f84bf979141bbfb4f9b95. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM81583338.
Estamos em Festa / Festa do Rei Jesus / Eu Tenho Paz Como um Rio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0d5c392746fd979eef1bf436a94b544d91d476857fe238dd26d7462f2d464. 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/USHM81583345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439966f79b672c5da3c3c7f3744b3ca1106c122ddacac0e46b62007637a0dd27. 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/USCGH1609660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ea66cba97c4042c8f6382f6cc4e2518e7f84855ddb5b6d5a939f0766d5c7b5. 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/USCGH1609662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e3f62d851459070071d0eb00601e4ad3a7638cecb853abb919c40ffbefa9d7. 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/USDY41524950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a7b50ef25849d444fe0b2cef47164670572a5d77167a7744a70c4441c6148b. 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/USDY41524951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4759dc7061c4ee3af3d490892741081ab1999e673e7fc716a95c6ac6ff9ac5ab. 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/USDY41524952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc14d3be79fe6b75d159bb57cd10e46e7d7176e384495b97a540c0b29370116. 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/USDY41524953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa592619c14c738d6f8a648faeaae2af558d15f5b58a3a3922f76df27a21babb1. 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/USDY41524954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465ac974125ae5bbc667e38c2597134ddaf22b8ae51e89e9eb00f6430b35cd58. 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/USDY41524955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99afd40bfa4ce6692a3bb7473a4a3b1bc7a851777224998149c3be0577eeab9. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/BR5CJ1000007.
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 0x6c4255f3290c940e76b156ecd46fea7394e0c0dce248d35d55dc36258b1d31af. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BXKXM2100103.