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 0x87cf092eff987309b173200b6cc6d4ba51640a96043d531b70aaf1b461a5bb10. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfa0d19f-226b-41fe-9b6f-0c073669d103.json and https://artists.proofprofile.net/proofs/artist/bfa0d19f-226b-41fe-9b6f-0c073669d103.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 0x8c0956491895e4d9681140c4b4e1b92bea30f5f804f7a4d4502e6814cce5e5c0. 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/CHF032200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d43cfcb51d182c27179e9ea295d7880df828e4c95e5e43f9ccade9ac052de7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN82259415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad1b2a4956ccfc61ce90baa8de9fa1e9efc7a48f152386a09cbeb98c6bb533e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:41:52Z), 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/QM6N22243778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304b1aa237acf70e0a7dbd201a6a16558c23459acf9ed7e68d4239455cce0a37. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2259642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f3b27ea0c82148fdb9d4648e6afd2c8dc162935d5cda53ba387b5cf0e3dd96. 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/QM6N22258589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4cf727a244c9357ae2ca0fb343090aa5445135422d7fe812bd9e4469ab2ce7. 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/QMBZ92272512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd527022c9f752deb1b4365c8ab59ae4ffb61784b4a8b7893d8acc4a4ce80bf. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZTAS2226113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef4b71550a7f8e681c53bcfd97855ace14bc9c05f186b1eede1103a6015e62. 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/QMFME2208921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da377f8ef586f34257fe953bcac65494b67c82168ec54f57834c4238addcd24. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:53Z), 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/QZDA62354596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf49f65696e46a9454a58e0909cc2cc512289c533a3d209fd79e666ae17cb4d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM4TX2333189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfbe73cf05a24b7ca427b5f5bf29c9ef422bc56cbfc5711bdbec8fcc0159259. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:16Z), 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/QM6MZ2338302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26ad357e03eed15e45fa8b29c16c9d4ded8dc41cdd29ae19c3bc5ac95d985f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6N22316676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8e39999473186a4af1f27a96891c057c5760c471459b4d563c523d8b1176af. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QM6P42389138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdca41822f8b7025eeb2b9ddb97f3177b33813d78ecd75f6fde552620c68e8b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMBZ92361431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100217c4bada854639b466147b602a02c9480ee032393b3687a3f84eff2a72b0. 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/GB8KE2317594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6740d4e7dd9de2ffe917dd417714a1fd7ee8876d7a9ef11c040207a9e28b955b. 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/GB8KE2317595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fee9397c3ef4f05ffcd1ebfda89d8286fdf8c267bab248279de08bbc465c909. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB8KE2326180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf3ad9d9eac3273439c8aa74c1608ecdf228fd7b4dc7c562ee05559d4ced0c3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB8KE2326181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff26bc51e2d951953a77d98a21e89e51128c343a1e91480ac9627b851366a58c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB8KE2326182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165a0b0933d3398503b2f65880e93fae00aade11f472a6fb82a2a26d6abd8074. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GB8KE2328441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca431d572a998a55be748a345bd62ee899c6e86b5ebd6426cc2bec1a3e4f3be. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GB8KE2401549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47708d08d7b9e3eb9fe994144ba437e05042e0a8812e0f45cf5c70c1f019ed01. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:29:52Z), 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/GB8KE2401550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899ad7316744b60ca54268794708bcac8f1a7143ebcd7abfe5c6b24394ca6bc5. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GB8KE2415711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfa81dec53230cbbbe7ba60b8145e051fa4c29973104325d8b8bae1b0366811. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GB8KE2424117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28eadd955b055d96e4d3f707c3a661df70f9ed44d0be1155d83dadc969b10ed7. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GB8KE2424116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f5cf5b51c5bc056d7088e9eb8022cdc0fd8578bfc941e16fb41db48b99acc8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:43Z), 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/GB8KE2502646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb61369c09389d483a402d08e4a15d5dfa4719d7a602d0e3f725e2a1c0ea9855. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GB8KE2518485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e7050e3f8624cd99574d47bbec10bdf152691f72fe21469f973856dd6c1a36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZS7J2244781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e7050e3f8624cd99574d47bbec10bdf152691f72fe21469f973856dd6c1a36. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS7J2244781.