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 0xc6e2d2cec78fab32c8a07b463df5ed1a7e88197ddb23e957cf30723f24c5198d. 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/QZNJY2404462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a7c8e8f2cd611da5e3d952d4688c5d05c3bbbe9aa34a6eaa70e9ba39f78dd0. 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/QZNJY2404463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f1f6ca89965a3b4de2d4fe7f97aa8ef4ea551ad6e695435589d9e450f1c469. 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/QZNJY2404464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf10253247016446c1a81b05cf39bc218a85335d70b8d64a072dcb34321e8ed. 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/QZNJY2404465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda55167f449954603c94d9e122f9dcedb7e37c4eed23eee02d4c0d03a7ebc5a7. 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/QZNJY2404466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f9d6bcdebd15a01d1676dc0587be6b14fc45e11070041ae4ce5a2b8ff30d5e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZNJY2404467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39fe0fadba40fc7c5480caa345d6574a826b3b7f8944457cf148785eea51219. 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/QZNJY2404468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2440d1acb768139599d540b646e947c750d02abe85de7b9817b2f5f204ec4fd0. 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/QZNJY2404469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c059ccd856341d4fd25d99cfba687abafb6ee4d52ac279acf3796fd54657e17. 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/QZNJX2484046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993fd45e87f08dd264c4076ceea9f5c6338bdb394ca36eeeeaa1d3496957ad2b. 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/QZNJX2484056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694a9b12eb61dc3376ab434579b37ea2d2b8e6d75c04ecd017f3c793b2353e6f. 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/QZGLM2031672.