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 0xb09949ac4d00ff4371388cdb27f0d096bc30504f2b36ccadd34a9d9c0ebfdaf5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZD2069471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e8d5173832a31d9a662a7b1290eadf5776151afbef7e30090bc467f4cc95c2. 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/QZHZD2069475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39657495e796ca66ba9c73de5ce281310d7a4dc6af537efa3f1be6ab8a016d01. 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/QZHZD2069478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cffdeaffd5e64089b2553b86eb595b4eb3d1aaaa18d3a547d98fa3a2c612f4d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZD2069479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b6f402a8d5842de91a12556835b9af5a14b672fe4843346233048509c655b9. 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/QZHZD2069492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4030b6ee990223a13f92eef8a6cc9c2be2327c837e887bcda152275f6e8ad4a5. 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/QZHZD2069523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7748ec7b99024aec3cc85412c1d0599df88653fce1c6addb47cb1b319e96fab8. 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/QZHZD2069586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc946159ac8728a2b68e629f9593cd98d3ed615247b6abaa6656a79d51e0b7130. 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/QZHZD2069594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfe3d6629f2cb40ae8df248acf025a44ad811c9df5b9c152aa3cca09f72dcb8. 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/QZ5FN2151074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3330936e1e0c3dfcefd3ce163f59e13850836085204c5f3535056fe3273b54. 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/QZ5FN2151082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593735a0d8e7761eb710b52e78ceecb05ab5506e38b081881a360840d3ce6d12. 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/QZ5FN2151083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc393af7ef11f1e59d8948e3ae636cef51eed554b139dccfdb8bc14efac40c375. 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/QZ5FN2151086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bb2bf39fd3dbc2c647c50828d8269ea779da5d36180d020f922e9544cc20ec. 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/QZ5FN2151087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6336152fad025f7fb04a3abcb0c5b022c742cdd9a9a9c53fb108f64095532b. 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/QZ5FN2151093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc4918029bfbd671f127a63ee0289bb40409f6ddf05dc8d9e2af999cfbca1be. 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/QZ5FN2151097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc667b9003315b07a041e11d572ee7d8e526221ffcbab03a11880120d45c857. 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/QZ5FN2151105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2b03b548cf59dfbdfa2e6d95fb89ece463fc90c13f819522e5ccf495572e11. 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/QZ5FN2151107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cf350c78008d9922aa39b17d960d1744d8dcff2c6c141af2b27ed5eec8bd41. 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/QZ5FN2151109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144c85c67bd813f1974870dc2b3ebeda9db9de181a48510e091680527eda8586. 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/QZ5FN2151132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cccbebce9d27624e237c33bfc16c6e0d611570f1431f92b584e7116d4b12724. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2151133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8888dd9a682d96b3c752e3174afb93b0c3a1f523bbd1a1d1e693c1fd9fa71c5d. 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/QZ5FN2151134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dfdf5abba79d02adf0e7544ca991db28c2ae06c2d3884792592001ac59e24d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ5FN2151136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce326698b66d3bece541ee0aff90c234a7fdd4d470338bd81d6d9d2774492bd0. 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/QZ5FN2151143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895b2461e016fa1559c746722f254da79cff258cdc3f65e40a4948bc8e7437ad. 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/QZ5FN2151146.