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 0x6956920196c9a9e5e65ca5bf0614df21f294de8ffc949f148b302b5c87797f8c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be6391b6-6df6-4bdf-86b9-384ab0d2b792.json and https://artists.proofprofile.net/proofs/artist/be6391b6-6df6-4bdf-86b9-384ab0d2b792.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 0x8cc4cd5dd96406bc345073071d38c4d58ff2ffa34b6d6407b04de60382985538. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QT5M52539802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7cbeab5d08df48754636494616928218c1ac00cb8d67750d9f4acf6dde32fb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT5M52568972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fdbebfe12f5e54179f5b387a905505891239f618686e8567d7b148e84bbb69. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QT5M52589225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd9a52b61e66d331fffc68c594953505aa5b59023d43b50f1e17b9e273690e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT5M52510589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817248d152d62d6bb9f47822f48b197603230c750daeeb86e8c66b4c3726dd8e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT5M52512076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc79bc7573181ec8c2e9be694e1dcc8aeb842e79c72de4edbdcd388fe5aeb690. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT5M52519237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ac42b12d59584507c58693e0bba68655448863afb139476be21e71e5dbcf67. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QT5M52548484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fac3cea32b9db9e8925f9f85b6d405bf39c5904837b13c339bb5ab663bcc00. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QT5M52525432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20380f4544a9416258bca7c6151b28d9fadc5ba94737d384003a82489405f58. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:24:59Z), 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/QT5M52577415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7824429a08324f43d5398d01501958769c0cb61e577ce2e291b6246886f54a7. 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/QT5M52549651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16d81ef92b40573bbe8a39af96b72bec2d3f85324155ef5805e622165881dcd. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:58Z), 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/QT5M52552626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb734bbdfb1297e92ad3858889ba5f9f48b22542af66e07ae1fc9b09225b49302. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:15Z), 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/QT5M52552090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50274817a807cf2758e3a235f9f64fd33cf7fc174875b5e33e5cc02fc9c3780d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:54:43Z), 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/QT5M52587881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7012168eff79555dd4dfe6dddfcf3a03cbc9d6607c69de3a7805fde6f103305. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:47Z), 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/QT5M52507636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71d054665c03c72f986d88439a4d51d76dcd4363e6c25dfd0fc1a8804319ad5. 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/QT5M52505407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5033bdd2733c587ae1c6d071d053a2cf58992581c5d30a106373d84a502ccd5. 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/QT5M52582114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e50b261aac26df9f3f03555b40fcd545014a93eeee086fa7cda3d75de3f2de. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:04:38Z), 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/QT5M52553247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56d4929f73463c82f1cbbe07b0c683f942a03e93c9ec1f3fe96fdde26d2a4b3. 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/QT5M52533172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e3af2d166eb25f886d470478ae7b951aef587eb57b94993fe4a6e65fbe1ef. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:43:46Z), 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/QT5M52546551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f660b330c916f0271b26e471927c5a26a5de38b6ad240bc88a06106da79305d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:35Z), 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/QT5M52597006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a347df8cbe2add936d79ac10769eccbe640a5d3ed89b2f11aa1f04ea86482b. 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/QT5M52536551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc451c95a9cc529f1dfbf54e7741041d7665675de3e0ad27ad6313ee9ae5584c. 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/QT5M52519788.