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 0xa759c4b949b11001d2a224ed713b2c62ec05eac07f3a257722c5cf144218833b. 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/GB8KE2308537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b465a78be6c4f91d25430975a099ba59e28fccbe63a9dd5f5fef5493d96a2f. 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/GB8KE2404173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1d69ea46617ca97326a8cdbc99e6a5366e5082ab816ea1b8e533dce1cd5af8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2532929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bec2d57a2960df9400b09d2ed29c4da5c44dfa7ee45b34909486e632e0be33. 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/GB8KE2507614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b2c9da04701419d995e447b5e84055b21c515f19654d2857d7d7728a28869a. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/GB8KE2507615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8b40ad06bea4431c0efc5db45d6d3aff1d270b350a3b2ee9af3ed81bb009ac. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBLV62316361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c16e511c607643e37443b900a2b1464ca64c60026be5f881f23e663bc33fa. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBLV62317603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a523c9bdc5d4dd58163a6bb43fb323f95c4af2373f487a710e53babbb93379. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBLV62322199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe733d0df870bef8c7eeeb368a5cc6987f494650e4ba2a93e2ee68c545156ea14. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBLV62323551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589cd6d3ed780b1e7ba062f2348413122eb301219ae33a6cc743b627f7648ee. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2407650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3686a9517d7f5d4a3791a53db446742799502f16b9477a680ca17df4640b677c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2415406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd2bfe2decf5f5ec4813e2a533edec71735175bc0ea153317dfefd5c3000ee1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2455110.