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 0x323720028a3b495a8931fcbe05f0d38c83c00e6af6025503dec266660361f95b. 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/QZDA52256333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0ee2f75ba924b49c69dce3c202938cf8400ae79418c30fb40ef6bdfcac5a22. 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/QZDA52256334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be9da5dc0abb7952bf58d8702176b8926f8631f8816245861849b53dae0842e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZDA52256335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf0e83119ca8a3fec80e4b5e8c29af71f227182cf7a5db30e1eaaec52c0888c. 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/QZDA52256336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8238157b481d7fb778340d20dc3cc3807b7e0b48ccfc75d34ae18da044bb5c. 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/QZDA52256337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b46bf3820aa642f25650e857a05f422cd4469ada7cbdcca19db2892577bb6dd. 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/QZDA52256338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8310a4f7b3975efaaee250c1d5164bad0fa3349dff64f31038654a8a71eeef64. 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/QZDA52256339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1298bd84f23f6582043600a78b2ba7b07598abcb5893ad35cd1442796d519fc8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZES72376180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d284c04fc90e83694949446e5a18f640f9c3c7cf17b8421e661b3ab561bdc9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CACWV2246209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfb2f1d87f8c9b8e98bdba1ec77e164a982363a2a0f0840942c028e67bb3301. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/CACWV2246214.