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 0xcbde471c53a5b5590482c147e006c5daaf0ac6b2ddec7691fdd148d82d81f6ec. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79855af6-748a-4736-a954-bd500c69ebee.json and https://artists.proofprofile.net/proofs/artist/79855af6-748a-4736-a954-bd500c69ebee.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 0x6e4347b8c559116be145d1ec775a1acdf63933ac39c31539adc543c5a78efa91. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2446313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f5361360d09ab1112e3e7295f41016cf80ac8f33dc7927aea7e4ed0f0e3b8e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITBHZ1500994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ca79a21cb0dfde78a07954acfa591a60d0eee6ee38246203e86886f414cd42. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITBHZ1500995.
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 0x2de90971a8dc3d37fb24efb1c9b792ff73a6691dcb93f2701e9e3159272e1e11. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBGD82300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a84957e14ac1b076140864316efae39b679da39d2973216709cd00570a761f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2362376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cba93d94c05fface8c35ea3c28b40256ed21c2292cba49916d52fb0b9725ae. 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/GBKQU2362377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb691c819294bc4be6080ab1b589c1c32fe4eacf15e34fc3546e478b953c25f19. 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/GBKQU2362378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c58abaa814fe63226ad1938fb9cde53007f03a1cdb9fc6d2d2bff2b550c2f. 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/ITA061302405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb73f605b8e61303c726b2b6dffb64e6d5d9df8313f7230471777d3c610080c. 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/ITA061302407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361fa3e7af113c218e80c4bbd55e95a615c2b45edf4d14aed5aa4654976f91a7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITBHZ1500879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aae4f6474f1f6ec79275d3659aee4db3a9f4a787626de2438b25fac8b5b6381. 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/ES94G2221805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6167587f1190b90f50a9bb39961ac8c5ef7d4b207c2a7856c73758d1c339a18. 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/ES94G2221807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cd90610bb15ad47bdec590a0c73a7a3fd5f46b88aca1e6c702db8a896cb4a8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ES94G2221806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cf553c43cbdde4e64494e08f66f92d6c1e053613237837410035e31303f46e. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/ES94G2221808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cccb2803ef5672b124c8eeb537e470b35cc3f15d843e1f8bcbddc56ffe3432a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITA061302240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669ceb14aa664f7b23e28fc6c7692968de7fa65d84fd4fb43c79fa36db8e1498. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ITA061302238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ddd4dff52a3749dc69e5c0a77a987193c7e2ee51302711a37df7c3f3199fd2. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ITA061302242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad583c8bbb089b389a983e7add2e98735545b7a7a72fbd050657602bbf0b465c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITA061302491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465d879c88570b850dc491a031bb14daf4b9682e520bbb110593daa5a6f7d68f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITA061302493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fc75ffc851408572024a609158ff0ecab37a3df8e33c5b72154e615e297032. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITA061302495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e527f58f401c4207f4cf193115caaa4ecce3878b8eef5493c6a86cecf979aef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX2488785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3769639bedf0e22a8869137e6efde4a464cadf2909d1eb41f2ab988eb00efc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TX2488810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fd42d9fbc14cd596f63b5c4b1a5f1496b2e1c54c4417d1e0454bc516dcbccf. 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/GXC7T2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6598874bd8b5bea088a888217b6ded34ed0bd224f804ec8ecdcd2d6bd35ebc65. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GXC7T2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3566308886e913e1b298aa4032b8d3f83c4d65f08c85152b8a73168db37e21ab. 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/QMFME2471496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a091a9a28c10b30f05b709660d5926576978b1aa9da0d655e54646ca3db6b72. 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/QMFME2471506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb767f1be715f32dec139a98045a026507a3be7a4d6dde354a8172b1a86f017. 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/QMFME2471508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2e536feb496bad2164f49102c640272bde56bf4e332c22c8c4ec0d214080a4. 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/ES94G2430102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc0a4f9896401ffa52cc2029b2426a23eeb7a51f19456dc96ffdbfe6a4f6f33. 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/GBKQU2449319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b61a34a3612e9b8a49833ace1beff6ed27d08945267daaaac1aa87f51ce4737. 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/GBKQU2449320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bed20a0f7d9a7285ffe4050e4b962a7e4e88d6ff1ec576f8040b1fa59b472ba. 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/GBKQU2449321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fcb9a77306f8b51c941cf77fce1cc629962c9374b2187ebcd2c4c8837b8aa7. 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/ES94G2120006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cf2cf4014dc88470236456246981e7bfe23c36f35ddc3b819f8054836c67c1. 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/ES94G2120009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21960f02d9049537d869a0faca2ea968ba6bd0982a681dde41584cdb90962832. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES94G2120105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90d7236e3a95c29e86e4cec34fe6b4bb9ab1c1524cea037a79fb1b6698825a9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GXC7T2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaebf6323d2430b84058f5e3406055dba2eec9b18eb5c8951cff95b774739db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GXC7T2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b01206b2a89153ffd3c443b0aac281cec1c019c0bce162d0b1400ca541370ea. 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/GBKQU2205932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb4c8aff32bac7082a1a4e1e370655242eb1b9b6495462cafc33fb1fa47524. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITBHZ1500911.
Voltaire Music Pres. 4 for the Floor, Vol. 27