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 0x6621a647880b4c5f618e9d3811f3ee147b6d5fef7b2b5e8e5fbabb2591cb6c25. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEYA92021485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2011f889ae802a0c025175f530b5e7782f6e5fb59d9460b196e8971ed7f8e92. 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/DEYA92021486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfb0cbdaa553142556fdd2d5a6433a8e5741aae99b7104ed22c7ca4bbfe74ad. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEYA92021487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47160e2a4b9681b0c2e0b2308e81953fa4f1c092769e3fcb3895a48f66c5a2a7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEYA92021488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efc0ce80a5fbdba04e354006f2c955ba7f5a45e5457d467af493b876940c1ec. 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/DEYA92021489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf055cf9a095017fb04fc4d8f22ccd08ebea47add0a5549a56f2bfe36d5493c8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEYA92021490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd06f6483debbd086c2ef5083c9aca6b1fd3b7eeebd7b68956c3180539b19d9. 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/DEYA92021491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd68e294cdfe02c3e9cbff342a11a20d006029e10368669c619cd519e6a456d2. 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/DEYA92021496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5fab46dbfaf7c2f0a7e4a8ad6771dd0dd70b843d83bd21d27de2517e232390. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEYA92021502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256d2e6b4ce6a4aec477885996e48cfad1acbc0c16572fb0936fc0f3829990f9. 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/DEYA92021503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266284c64dd90ba64520f21c93c21e6aa3fc3e9d4ea472dc53851098fd520870. 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/DEYA92021504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e63cdb88db3341f4f643e58f214fad86e4788adde8ef15902588fbfc65ed7ef. 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/DEYA92021506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3628cc78c4a7382ac8c40fa4c3741aa05cb1a0eeff96c4f93440f4bd3f2fb62. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEYA92021507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162f703afa38710bf08d1ccaf73bacb5ce8afa39cff6bada4e48d6f463d2f41f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEYA92021510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c7a3407e5a6785572335a849fc676a6464455eaf0af746fe0489d605043764. 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/DEYA92021511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028d04a2ea7af5d306fd6c9cd9e766ce2b99121a8368ac390d866f80afab74ca. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEYA92021518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f475f16523d6893cc99893741c579c660134a3a20832d6b5eb3134d93e6835. 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/DEYA92021521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce5e6cb54319844f404874638b739413a0f2a416cc98873dcd7f287118b60f1. 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/DEYA92021522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e691a04e4f3e5593aa1e913515b5c1636ac9d06ecb11442c7dc265de55d9f9. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEYA92021523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb079e1cca12a230086082457ddcb9efb39c527c8f11290aac774dd322db0f053. 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/DEYA92021527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9ab3a17214a485eef336ae067be66ceef99ef67db322409b036dace12822d3. 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/DEYA92021529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3a405b98625bd1ff89923fed4b10a3718b010603627590f4da8748f45fb26a. 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/DEYA92021532.