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 0x7210f31146559ac1a780632c83e57cd23520ca17d6a74904564cda6cfd1fe320. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/PLA520400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bc0982a1cc9b7c5d6a7790c3c672aa3d1dec7d9d7edb372df8553b38d61e4c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/PLA520400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb11f1e7df86fa756b970dbc05352ebe97419603a3b1344708d45ceaedb4bd3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/PLA520400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226a71a3493ec821b4bf52ebc549116fab5e17b4bdea382ed6e3cd67f818988c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA520400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375697379f5c0eb521f291446f09981f6fcf5ff2a91e1d94c37cf7e94489ace2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA520400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0627592d7014f93356bf0b9c7c55068ec43185d4174bf1e7fb08071486c49c67. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA520400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc51a6fc2983d9cc74eb6588eddce9efcf90379f959701655d41f7a2048482a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA520400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6a52ef974ce19f7ac82e1923e4b833c74167719aab284ae5d5af16a1254e3e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA520400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999130dab8a12b4cf01f1dca71eb5155e5d7251784d8f04b6c5c9cfa9d28b550. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA520400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb72cd698206a09ecf5bcf1d8a6c1aa5e0cc3fa724f63604bbf2e97c1e9c244. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/PLA520400007.