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 0xe5a55fbb91668062a119e5de2eb1d20d2bcebd52eb005cf3348c86ff3b468716. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8580c5f-4a52-48e3-821e-a3f621bbe7c5.json and https://artists.proofprofile.net/proofs/artist/e8580c5f-4a52-48e3-821e-a3f621bbe7c5.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 0xf50dfcd836ee6b9b247ee062af219050f8c78b79bfe248265a5aecaab51df9a5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QMDA72137599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e03ba645800deca399d988944b9b7b33decf4b64d54354d601a307fb638c067. 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/QMDA72137623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221bdffb20a1b905ecad006b09b0754a43eb1e90bd99f0df1e07e793bb6b1928. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMF2136047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc21423d3c3c9f3c0becbccd91a41ebaabd8c1ef37f219fff661955fa6c4be3d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM4TW2247862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88af98df4beed995e314430c4ca1b970bf92d630485e16f16828f86552fa81bd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TX2210677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bf32390652e9d2fd77bbbd64ab6cfb7444dd20baa921f0a532584bed0bab15. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6N22270825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5134103f6137a2330b4c2d3f93841d75c52d0b3f389e340257ee6ebadc9cd1cc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6P42206914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80dd1580efca3ef2d7689df4b50b97086d0bb4c0935790feeb901c3a71ae767. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QMDA62262831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb311cc2bf2944825a2c2088b729584bbdb35bcf8275f51603faac2b19dfacd7. 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/QMDA72205792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7d593f8838e8a82de7be055fd796a85331895540c8df610b4b24e967c343e1. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QMFME2292861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c74b506ea4c57190d7de4d275730bfde058f5183168e28171b46126f1028ac. 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/QM6MZ2369684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cff5b9abe44e8c098489be076346206333cc05f7b4b2e9c76e4c8da99f60e17. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QM6P42312169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd6035c7232d6478244888bdeb19a960f20efd88d681852b226d523a7b34184. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMDA72327194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6c7df0bcf364a6d698b4e51e8da4a951b6ded6735e4c92b1ffb6b5d7a1885a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QM4TW2417907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562198e1b2b249cf6a206c35964ad27e66a0e16a9dcbfd37d11da5cce939b1a2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:51:30Z), 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/QM4TW2484916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf40f3ad96aae7c8a94160723946faf45c1378484aa62f5e4f51a753f2393f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:57:48Z), 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/QM6P42428371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475b24caef1e30a8835b30ab7dce52f4a38d4c24b60c95f6c18c2cec035d04f3. 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/QM7282488072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f52a6aad74e2fe7bf332346488e8a8cbe34c5e3e2333e60f3b129da3f0c1f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM4TW2515449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd23bb4352836d837f022756f5d70e3733481520a2053d1bf05d383a8a29c41c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TW2547746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cb760333a181f935fa7f5d549f16e6bffacd2e8bdded369ca4812aede0a5ad. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QM4TW2576637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacea556bf187236759aee5163e7094bb856b99ed16ea339cb048537f245369a0. 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/QM4TW2583383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e98508ee65a4c83c1495db7484667cafb2240f0b3ca855c2fa11222b973910d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QM4TX2553592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cc43c26a9fb0c8415fdb977d7ae69cf563d3949e4b02b5843e2aa0507913dd. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QM6N22558053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d2d26ab60fddd048de2091c321372c9537445d733f2679fb54635bd6ee8ea0. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6P42527523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5206127ab2d0c1b46ba87cfb32ebacaf94bb1afbffd605f2132e54a5f2807a07. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMBZ92507257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a03a68d7ebca9370aa66b19f3e1c8d844550d8a82374f1212cd1da4312f4e7. 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/QMBZ92507260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f88c601cb6857bbdcee1cda014830df1cf5b1a75374ae17fc476c7a08e2dca3. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QMBZ92507261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8362a8705ba0a449878c91c8b08673a29876be3f2b188a182fa3b28e3ba04976. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:56Z), 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/QMBZ92507262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0199139ce045767d860d3d8d4ae455aec5f5c3d4242f833316a4bc5caa9f32e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMBZ92507264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224ca750d1a47e38769e9f66ac68b9413e16de013a8b1033c7d1cb0b964f5c66. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:50Z), 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/QMBZ92507265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a68d18c71b9a6207fe632f453cfebe454add4f250423433afb600149ac8dbeb. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QMBZ92507266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb722fcfc6c8f564618da12085013bf20dd7d35714e121aab997bbcdb69d0bd7b. 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/QMBZ92573302.