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 0xae018cf4420afc0af7f08271cb0b6b4e8705d53827fcb2ce3ca659b5f393b80b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7377a27-e313-46ce-b836-57be9eba9d7c.json and https://artists.proofprofile.net/proofs/artist/e7377a27-e313-46ce-b836-57be9eba9d7c.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 0xaa65b0f5cb92e1837a64fc6fce7b0d1b9ec0257a66ccde4767b2fa6cb5713fda. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BAA052032185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37159c184b73a4267acecfc13c29dab90a5ee8c7d698956d5314c58dadf69717. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/RSA221812591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e02175054ddcef6cae0893a6deb354a2161c0638937ba1508f04201abce3679. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/RSA221812598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf2586a6e40f49fa5f5201b97de63c519b1751581b75bc4e36b6d15a532f425. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T04:58:59Z), 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/DEQM91203089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0152a58f584a0399e112b5a1663520a42012abf8979998ec94a89f5d7b86c1a5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:54:53Z), 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/DEQM91203090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527a6570207bef1041a76d75beffb4c681adb84b71a0d0970ab8ef64715717fb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:01Z), 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/DEQM91200421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188d7775685a0d9eebfa91f8c8e26eee290d180580b0162d75503523bcd634ab. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RSA222301284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91f224622741b60a58fa3efe1b041e80892db98535765d39f4b91d39c02e77c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/RSA222301288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d657ec4581249d97445cea291e86757b5e837df023cdaf779a881d96125238c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RSA141333737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e0992f635b93c0714d5e10fcd72b9f2579ff1e159bbe5b436f6415a7a4ca8f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:36Z), 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/RSA141333739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf727e93225834bb2e432ff80eefa7154e0ede1fb9779383d576f334dee2fb640. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/RSA141333743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ba5323b1aa409104e653a10ec6de4f184855c4a04a1ddd81a99008c097b31a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/RSA141333745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0434f43b6a1b187f894b7b9eb1962c21179181f956731b5b2ba29a334cfa45a. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:19:48Z), 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/RSA222300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098398a381051596357131af21e2a9686d1f642d299dbd8f0b6999abe9205512. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QM6N21436995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283bc0bb8581aa3599ad3098da39f812e03b335e043743c9cebc944fe1467e08. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/RSA221815610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f159cb7110a489e00a6648f03fb627b2d9db10a2ed82da1a2be7df4c41d5bb. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/RSA221815604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c26ddfa713e695ada54d09d939678cf711cec1d1f32f02bfa0d6367a24e207. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RSA221900668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea17e0fd4ce3163709a22293cb85a5a8d000b2cd9ec42e6aa2f182462561d6c5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATAJ12300878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ece4d1cb98b6fb21721ba225b9319e78e1e872e823785d043e3e7fd167f3eec. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:18Z), 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/ATAJ12400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bb794fdd3a471dc28222a38cbd8db3ccb05aeb18c85e19c104cdb8392202e2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:11Z), 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/DEKB72523652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce43955de3153d11f2555ac619386e50fe3bf81f30c511503c85473c0a104c42. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:10:06Z), 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/DEKB72523654.