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 0xce65283a0706e26f7444f6b9d7a1b9b120b0571b70502239802bf7a11663e8f3. 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/fbf66dfc-267d-4c2e-b2e6-fa5b76fd07ba.json and https://artists.proofprofile.net/proofs/artist/fbf66dfc-267d-4c2e-b2e6-fa5b76fd07ba.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 0x45a3ce9f50a92022a77e22ee486b6b7345091690d3faf87f83ca5b533d6e8b28. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRJ5V1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0dc5b1e24eb8d59e0af179dc82a125491f024893425345decdfb74974a173f. 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/BRJ5V1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ac75e99a7267c8e08943e844e90dec0c2df03ece58050cf33e0e4702c6b0a1. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:49:45Z), 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/BR4GX1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caf987e452960c5d613a1178750b2e4ec8384b1197fc2e61f7414c314ddd4c6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:25Z), 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/BR4GX1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647f7e334e9763e4db2d873cf967f4c63916594cdc0aeee30fea789f79f01d40. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BR4GX1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87dc52d6d11882453a105c28e28697b715e1f844742d8b0d0d470c7a6789a86. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/BR4GX1700016.
Banda Marília Gabriela no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb5772de5abbc37e5ff14bab8dbc53885a2d980cfa4ce5982f9e80a76f5b506. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBMA21979722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55744f2fb0c23c2be1fb9bfdd56ff0b6c645296c9780ef4807a8603bd7ee376d. 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/BRRGE8300057.