1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x50c901868a3cf5964d36600723b133ddb722fdb1b53f6f7f9cdaec4343cc2364. 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/172bf5a8-a43d-482f-8690-68e5cb101ab9.json and https://artists.proofprofile.net/proofs/artist/172bf5a8-a43d-482f-8690-68e5cb101ab9.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 → block OTSBitcoinBlock must exist at that height 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 0xf5f1e73b2f588d1d3b2d22d3f95f56b30fd7a9762a9b2bea6656e17fbfe70c19. 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/QZ4JJ1665812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc653354ec9ee5062881d4f80d4a4aac57784fc4183ffa43d057768370d97446. 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/QZ4JJ1665813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100174921e1dbfcb3f1b253ea8e5dfe4a931c9d869d1d1761a66223724ae8c03. 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/QZ4JJ1665814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97ac23ddc563a3ded1a9f0116c82f76dad2cb34335c8e25e25fb4937055e953. 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/QZ4JJ1665815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ead59215706d58059cc27718df04c595a7777cf7457f7d5719fed976068e95f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ4JJ1665816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305975777d9119753aea5dfcd1fb6ed10e586b8dcc463ae18f1a5aa24d0467c. 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/QZ4JJ1665817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97e8f851cee4d30b5dd9fd841cb15077c06331f7b98c608e555c20fe1084dfa. 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/QZ4JJ1665818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e08a7a3301898a93c44e6b2062a5524a77bb64e7de34402a638b2d6e87b0d59. 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/QZ4JJ1665819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48156f81001736423502c885df350262ec8c35b5c99bf2e5de15c42e300b5e0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZ4JJ1665820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fe4c53794784441b61202e83c8be0747461215f2cbaf30c80f10ea5787edaf. 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/QZ4JJ1665821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f24c8289422fa4c090fbd52e63d7e7f7bf7e40366cb79b01db5e34fbe3ae0. 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/QZ4JJ1665822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77775ba2e0030c049144aebdade25af345af944f78db4574d7d7a4eec160ab1b. 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/QZ4JJ1665823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a7db0533c4cf9e533e4b2a21390e11e355e0f3c3e9258dc377548918e37af. 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/QZ4JJ1665824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c96cad6b35ddbb8a480fc849c702af9d78cf94aa6fac25609a3bf920209f478. 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/QZ4JJ1665825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ee5c6b89f088dfae01b0772b07ad5f299524e553cb6133dc4d0f32f9ee75f2. 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/QZ4JJ1665827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bf7d65365c31d17e9e89387f69ebe931daf101c797094a7d2c04a69f98bac9. 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/QZ4JJ1665828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d72dd210d8507948616af2b384b4502fd25c02b9ba04e476182a3ddabdd20a9. 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/QZ4JJ1665829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb973c02f8780fd4ea0e804624ac19c505d5caab4ac3e326d227c924f3a6b973. 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/QZ4JJ1665830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53751f1d4e4e318c54ef08380e66f864e977db8724bfd5983ad16dd1576539e7. 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/QZ4JJ1665831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dfd1a4361fed13e56606a27fab94d921efe8f5e1582d2bfc06e17ffe0c3de2. 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/QZ4JJ1665832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea64fe08b32bc3dbbaad78f340d00c78c0b5e47e140c87a5665564782c5169a. 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/QZ4JJ1665833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8195e68e4e8952ab07de193962b0dc2dccbab892abe48e6b40c1b134601d9da1. 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/QZK6Q2032328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe482db61dadc20228c94c4d1b17b0a35f616bc76997280526826803481446f2b. 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/QZHNB2154217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73f87c21aed6d23020cb503fc4640d688a8b21a93d6b501dbbf877d65b591ee. 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/QZHNB2154218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a1bb3de12401213b61b78a06e654f69026b905819a93d59e1ad5e8329d1ce8. 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/QZHNB2154219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb078c38b00b233e963c8dbc6a410e83edb65dd52c8c61b3154b49f90a9cae8a3. 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/QZHNB2154222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3262b60c26ecdd3691ebd787a7b30e9222e7c24ed710b0784df6856104a320. 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/QZHNB2154223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d29a1267f794ff2358ed9efdc6e015794787caab90605a66a7ea87eb00d91f. 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/QZHNB2154224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2d03ae741e054eec4a5870bdaaf8f765b6298dbc680c39c8a7a9746e6321cb. 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/QZHNB2154226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e02807e30ebf79a1fdfa24c3e195b93ba0aedc53306481adb77900228b9963. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB32249639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2248d23ae107530cef48e9ee263a4b7672c92d253743de21ac9e37451cfdfd86. 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/QZDA82342351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5787528dd9d53d733ef2532c16310005336725900909a298f1eaed8e083533ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA82342352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2f38bc1719a71178dd99c89e76e062be1ff6b94e72f586b0c915e9bc9d08b1. 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/QZDA82342353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1d51e9521039c3e00a420c4a68b43a2bf41758214cdff9cc30dcc38bdbb95d. 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/QZDA82342355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edbe781ee575181db0176e55fc125cfd805d47b02c24099e26efe18d94a2fcb. 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/QZDA82342357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669069355bb5163374093a8f461668233bef422db8382ed28303da209479930a. 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/QZFYZ2030910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7052a41485eab83ff0af4598c78f99b75e21a27121bf52a2d9598c438e772908. 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/QMPKX1763223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0240a67df60d0dfcdbbf2c05c9749bf8431c59cc5674c546718ebf68add33786. 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/SE6A92317713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bda1a686fec83064df98bcc9d818501a071e514007fbaf2840e7b6595559acc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4DW1605008.