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 0x5b3cec91c6b68c8e12545ed9681dae7f745655bf881197ad05486317335c7d87. 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/3ab5b800-c3f1-4257-8cc9-83f9d1bf1d69.json and https://artists.proofprofile.net/proofs/artist/3ab5b800-c3f1-4257-8cc9-83f9d1bf1d69.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 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 0x9a30bbb67fe18b4bdf71db58aba7c6fdb4a7d93d373117aedca0c38fddfa8ba2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BR5PP1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287a05d553415cd4f6d8ba94e91a155018487b4bbab0148a3dfbe1bf673f8a7. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/BR5PP1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6c08777bf53f9b1fc9a70b926e4c8e7380002cd2034b9a74593348464af12c. 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/BR5PP1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8374b4dc54a936cbc2874085b30c8d2fbc0cd26a01f4d583fc0db4e98bb4fad. 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/BR5PP1600001.
Daniel Profeta no Estúdio Showlivre Rio (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08d703e138800afe5f4a7bc061ead4f1ee8743588418743b1936d0d9db18a1e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BXO361900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5baa83a83b0566e35ceba7e8032bf70fd06037604fdef06296a466c3138513. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BXO361900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4c1d1b3169cfda01e1b51d0e7dfa8bb1e2296d18eabc62ebcc60160a320024. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXO361900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999d5067574d2372b817864c30135be1abdee346d0e803a0c3748efd301ff394. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/BXO361900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e7ec0a5826f0991968f73aff76abb676bc9f7297c287d548c287941fb16332. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/BXO361900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fe5ccfdad42423bcdbeeb0521ad9048b1cdbcd4946e61edfdb6d38a9aa8333. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BXO361900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd749ccb75ae442b71de141ae56bb18b7d95bf351bc4c41505030692b1b585ee9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXO361900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcfed8d2fd7b870af13fbd4926a20d693a44b54e06fe4a67953007ee2fa7672. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXO361900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ec54b8442710609cf33b31de9e3abbb102cd960d013e1bcd4ed3703cdb0914. 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/BXO361900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b13368ae35c7c7cea9a5d3eb09e45f68785d64821eb6ed3cae869e3c47576f9. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/BXIV82382135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1886a4263cbb15e56480f821a975fb6e5410b3e29840f1c639869fd718feb41a. 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/BXTSF1500002.