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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727e782a93b3278fefcaf4bd20e298bf7cf0ec89e641c4cee04ad12e487d100a. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e47e2ba5-7194-4efe-b68f-6327ae5dcbdf.json and https://artists.proofprofile.net/proofs/artist/e47e2ba5-7194-4efe-b68f-6327ae5dcbdf.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabff8660b4015ce9f7e7551981cae9f9efd4ed4afe995e2cb8f075ced945384f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:39Z), 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/FR96X1926074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d78c390af8ed0dc8c285263e67eaf45fb23a4e04ffda06e2d63186ebaef3bec. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX201924985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aafd93801d67dd6152f9410eb26c3cd1ffcb7d36b03183f1ac38896865d0b1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX872137750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d53815004c8b15d49e0b33ba52d3fe74c9c582a5fd3290e82edfb174690260. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX872137751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962062d541bda49638e0773774e38b40bf81ad607f6eebf1acf79e0fa3f81fed. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S2138416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeff1149d8d075c735d2a63b3e09f2f27f7669aa61ea6c09b09c0402f8a98a31. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX872137755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb575d92af8472cb56d7d478f87e8313399377a4347c0aeceea556b9343407590. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUAGT2505754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345d4d2799b7fc3f3f57df8d1c8d9c60a2a44aad5e54fb8f36a1d058b82bf06f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/RUAGT2519067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb575d92af8472cb56d7d478f87e8313399377a4347c0aeceea556b9343407590. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUAGT2505754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89b816872efe554c55bc49b4d031c249ac22dcdbbaffd8ecb4ff380bc455084. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/RUAGT2530535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb858ddfc987586c0280080e7f1df78c7fc4f87140406cf95c54ebd0fb3deddc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:54Z), 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/RUAGT2530536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4963033e7bd5f810d19f08433dc4ebff79206292ffa71ac87d55e359b86879b9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:23Z), 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/RUAGT2530537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914722cdf8bc39a35b6a8c41c1750b349b96bc578b0abb86bfa45cc51dca6d1c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/RUAGT2530538.