TWAIN and TWAIN Direct are application programming interfaces (APIs) and communication protocols that regulate communication between software and digital imaging devices, such as image scanners and di
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin 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 0x6f9e48639cd4cf82425a5caaaefded3f2f2c0a4db70770f978d4dc1299911d0d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28d6c1e0-f77a-4b0d-97c5-3baf3d8f4463.json and https://artists.proofprofile.net/proofs/artist/28d6c1e0-f77a-4b0d-97c5-3baf3d8f4463.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x2ade9eb26420a0d1594ade64b48eaee4598555a6e110c71d9864c0a79a07925b. 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/QZEPW1905401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecc85bb259f82fa8cd2d86abc6da67fa9fa9125d34ae4080646996b81180ef5. 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/QZEPW1905402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130e82c32030cab01b4fcd63d17fa8a4629ccea4f999ee2b154ddc431f619fe4. 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/QZEPW1905405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7af45eb2a1f209e9238f8646af034b29159e1e69852d92fa588536a79c78d3. 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/QZEPW1905406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866fb0783d26a3c04715bd1a5b7d16adecde6b9cba8168f888c390a9c7887145. 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/QZEPW1905408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd63c8ca938f4e07b58e6314d12367ef54ea81422dd025bf5a155bef7fc1e79. 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/QZEPW1905409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d177931904cd7bfa41dc304fbc6f2cf91e0a39b5ce5616f6b497534bc165c10. 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/QZEPW1905410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a62adbd4367fe9a437979df0a2eff9af160775c2fe8b7923630ad78fa450c6. 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/QZEPW1905412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ab332f0ea9abb97a821ba40b3f7095e8794c1ac678075fa514794f8acd0674. 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/QZEPW1905413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9f167dde58337f87d6aeec372f06b35a3a003d669845dffbba9d3d1355bcf2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAEY2026388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f20df9ebac58ce91bb17793fb37b03b1134b11a5d4f5dea47db7fa87c3fd99. 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/TCAEY2026392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1551e61187c9a552aa97a85777693ae099e2079dc7a78ab746045748baa9d69. 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/TCAEY2026393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e43ce985ae40ce13374a687214ab7ba3b262cba50a663b4ede807bc4921abe7. 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/TCAEY2026394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071689ea5665674905e79de86083ec5f0590d97a2fcba3e4a3220fb5002b3d42. 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/TCAEY2026396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bd9cfe00034a3a14c94eb08f2455db43cac048c085370e4068cbde56a53d42. 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/TCAEY2026399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c92a17fdc1f2c43c82e1420125bc7a0a0d6405eb1c7a7db488ba63cfb0144f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAEY2026403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8c279c10a274bcdec280a71dba9a42928241165bc27bf02d6f853d51d45acb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAEY2026404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a6329aa4ceff35bb0d4dfea64a27fb892010efba309fccbe742218a006383b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAEY2026410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5378a45e680a96b6b2c1d4f00298ba75a6e8b44655a40d9aea02c3e885e4e063. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZEPW1903501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75848f23b6bb77c5e72b5c42eb225a3694ad9536f83e1e1f17d9145499ca441. 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/QZEPW1903502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a25fa47bfdd78f53d8a371c458978fc36d22b9866a423ff8ec709e177f90a84. 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/QZEPW1903504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62daebdf743203f6cdb6ec4c6550b74ac3e80a9fb7451e5cd0b3e7a06be7d7b4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZEPW1903506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea20093fbbb115d6ff3f99314a391914277d9f1dfe8786b5bc6c9b83b28035a5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZEPW1903507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698f74a3d5782a44186e4e9c20a3bf7f70c4b34d98d2267b06752ec43f34ee42. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZEPW1903509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdc7d521880e193f89fc196480993992eee85f6d4a037340b2b024eb4ee5b50. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZEPW1803201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c7e35d8b4e7bb55acec352c8ef8cf9fa99227a9380a1921dec6389d476da94. 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/QZEPW1803202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5e68ae726e5140701a955b7e029ebaa6f607ed1f2dba7ad40ffbe327a27872. 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/QZEPW1803203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d00d2116394c12abfd223666333b442260ef16c17e27fa2ea435ece59186e0d. 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/QZEPW1803204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f6e74aa9f2277e92528ec1e601c6fca12c38a04a883583c25d4ceaae8d38ba. 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/QZEPW1803211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafabf85d3223fa137ab73f86427bf9ba0941bf9324a90015c74a9b3282a87f8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZEPW1803212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61adc632e3ae4d852fccb0e03efc38717d8817f57e7e30f0b6faa12fe1648ab. 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/QZEPW1803213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd12d2dcc0d71a0771d0533b3b4ad5c725c81ea9b7f64a6a900691b99360585. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADF1777838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cb333b49fee66e76eb39a5bf768246eb99742b56390a66922e9f212e941393. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2B1703692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42590dd56cba84ba2e2efdae43c11e713800514576cdbafa11a25893c56d5fec. 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/USA2B1703693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb286e7213cb6e603e8b7e56e33207ad2563c67c7dafcb439d3246b8a7954ae05. 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/USA2B1703694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06389cd3be1f0d2669bd28af293cc8cc85cc0c6009e077aeb75d99b1a7dff17. 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/USA2B1703695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d08682306918741de0a88d5b7008061b0d2318e3b92cb60994f55cac763d8ce. 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/USA2B1703696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce775162b678bf17e245f992b2f452ec323281478bdd8678fa3a138ee2b1c54c. 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/USA2B1703697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cd8eb82a2aab11f98d201ca81f54e9f85b828935f55bef81e5b28bfb8482cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2B1703698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0f51a0c67471e4ed8cca7939dee49a56c445a130d243339b0fba66c4f5280. 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/USA2B1703699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c0b8e0809074374df091ffb0c155077c7d72023308667fe958114863cc8688. 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/USHM91621986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbc368103db335062b6124f8c38c521674d7d1ec0bc4b7a6e7b8c88bc70b294. 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/USHM91621987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621686c1333650b2d43406914cbfe2e643c929c7167748e0e7198f05c5a807ca. 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/USHM91621989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c155f9cf06f931a68672b3fc159d600bbc5a8c7cdc38cd6d0c787b7953e4c1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USHM91621990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850824affe3e78afc072b8a131f48ee0abce3e79f04b7e66b41448197f4a25f8. 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/USHM91621992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83287e5509c3c43d7af4f439dc3dd68b7994339c20053f7954e01c8585c892ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM91621993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3445f6ab909ff7891bd10c8b79cb7efe91bf1d39772bd753e97255c18fa2a190. 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/USHM91621995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b2ed2a950176b4e728f3680a77b0278c6e4a8d64fbfa81af7b5caba1b36917. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USFVZ1990169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913afdd47859ca4288e292e3dca412c994bb909fa5535463fec2885c1a66f046. 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/QZEPW1803205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d124d20ca65a4be1541379805e008d11f01cc3fec551468917b9a3da46cefd0. 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/QZEPW1803210.