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 0xdd106965a8e7febc8181822faac6a3a3437e64f1b37b89f09ff10a6c59fd28ba. 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/QZTAX2293685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4fb849d10baa1b1796c82e8f63e8f0fe41c4c13eaa5f2e3dc64fe7edd52942. 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/QZTB22281732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f30c7966b597772e2bd0abf68072fd7c7d431d671fdc208dd5f17c5b1c58bc. 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/QZFYZ2283227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa149b4ff41ee1e32baa88a9938301ec971bdf00b48e35ef1086aff1a66f29c. 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/QZK6Q2283269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9729a78c5464d9623020d1eea4b64b64fa2f48c62feee758fb2fa0fe49b1b43e. 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/QZK6N2250639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ded5bad26c0334f6893961f65fcbcb84bcff919fbce6997b3d61465d159e89. 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/QZNWS2211761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3bb695f9ec75af06e7c676abc5119ac38c41ac3c93a7a3cfd19aa29765dd7e. 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/QZHN32146990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae923075de60459155aae07a46eb708f60fcacc59bb19338866d318279bd363. 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/QZNWS2211762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fabfa0b8a8ef2316a1918d169208cf2d7963efd3d36357d02ce0c1fdb447161. 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/QZES62290851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc019b1d51e6d32778c78967f6d89cb6107f0b6678339744db2e2dc4a466148e9. 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/QZTB22281733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96533371303d16ba4b1f06c039b9f4159f6694c0c90f222acbeaa62b3961f7ff. 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/QZNWS2211763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa149b4ff41ee1e32baa88a9938301ec971bdf00b48e35ef1086aff1a66f29c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6Q2283269.