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 0xb3d101976c123d77e60de3cf16b59240e5235a8c7b76c28bf125322f8a67ea3b. 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/284b91a3-b5d4-4555-887e-84d9483d30ff.json and https://artists.proofprofile.net/proofs/artist/284b91a3-b5d4-4555-887e-84d9483d30ff.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 0x7267d18a4dc812fc258a345fee9f4b7426cce24b51881cdc7f39579df01757c8. 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/QZNWX2390203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877dd0517860c2595dc1a7d139a7ef460ff093e0276b61605ddab6542f4022ec. 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/QZNWQ2381923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c54b04bf003ad301f2d77bf586d0c7793fa8918e065eb383cdb7856eb63e7df. 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/QZHN72338538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa64f3364dff29653f88628f1e4729138eb480c0ddfb4a93c384284dafd2353. 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/QZES82304708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7756ac8ab29b80f3789f8ddb6ea36f375388c2a2203e12c0a062372e2029a369. 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/QZDA62341965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da35888aed47510aaf9359cb4fa2b9300f1322aa714c45ee8da84706e84c30b. 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/QZMEQ2247374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b860b4936f1aa986d64e039a28439e7810072eb50fed626940291f4869806. 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/QZMEP2230857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e940e573dd1dc25c4a658a19335e36d62a6338748e50bf500c05cfd427e433. 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/QZNWR2321148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d69ab1a598fddaad78b22a4339adc6824485efe3cbbe310009de7854bd099d. 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/QZK6L2354393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf77bf33789aba73e1f0b8efd3aee48c4a38d1741eaa7dfc126d1e4fea83441e. 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/QZFZ22405068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf149316e94bf3f47ea14ddb9f5bdf2a94a2fa433eb66d2cd3c40e5ce75b3d20. 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/QZTAU2318510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef44b1a72da7f680275bc2193dfac6aa5571f669b360f02c10f1e571f4a35d2. 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/QZTBD2468380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d7ae67873bbb48fda6ba1df2b6a4e555a8db10d5542ba86550e21b2590c649. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZK6H2374800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a406c0b85b8f78c3444c5da377ba567c584425b658f069244e659127f1bc46. 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/QZK6K2339001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7292d4aba56bafc9b2a7d745b1d8edeb96b73d25cf9014118fde92f3d4f9e9c. 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/QZK6K2339004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c26e1b12653dccbba780a02620a22079883fb98555706baa2000df76f32c5c9. 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/QZK6H2374802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2458292a58c3e7e658ab08695a788a1dd5c10fa2e9e0661d9bfd2c6b4557dd6. 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/QM6N22482299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1f8949f6946d08f6dee23c889d8a57a1a9e2d821826ef63311fad235104682. 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/ES64E2204153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1121c4e336a359923be3c8f205edec66b3f76f8950bb5937dccdd80fe8313c5b. 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/QZK6Q2201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084fe2ed7998754e97581b1a06d223d369f7d59e75b06c854355042be5fe2eb5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6Q2201250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97dd03fc8499b5eb64e02ad208ae6e3c09dd5347bf4664b35682ffb8a14520f. 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/QZK6Q2201251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d15d1fb4b6d43a2afa54307bb346468c80aa2f18ba3a6455ef73d72b02e7605. 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/QZK6Q2201254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224b9b565b231be1609e73d7203d0fc671e2d538e7910299de63d8c866cd9ed0. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZNWV2523315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e9d4573a359a8822de8319cad667ba3da4143c4025f30c6b3584c8f2176a5c. 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/QZMEP2534353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15de250696a2d46fac8f160acb9599aa1f53772241c6f165f415fe3e5d8527da. 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/QZGLM2525183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda768bbf183e2a4c6ca858faac0de36a41a271442b9f68e9fea768884baa6ed8. 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/QM4TW2576746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde226484357f7951d4fbb345b3d7f9ad51d8637b8fe251e188eb0b271b66498. 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/QM4TW2576763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c6415c0c14e301c03ccfba63fd35cf4695d764ef548954e5806cbdbd99ce86. 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/QM4TW2576771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41126df256dc76865651a26266c8fc35f5db6f92dd70f74be99ffa97c28147b3. 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/QZW9M2465156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13549ce146398fda2170855b1a866e3f1d77676c682cad75f507319a727fb618. 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/QZWFU2461753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50be963a4e0b48427e79d3eaab85f121e4ee711b3bcd49771be56e6a0c53eeef. 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/QZRP52466055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bddeebf761743fe8fd8705d9bc3956f33ab6777074b2511b1c2fb468bbf6ac. 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/QZNWY2475452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9c329a8684d8a67f725d39116aedcf118cda1fc86b1bcd4e8672132c6fd4ac. 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/QZHN92414953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6384ce7b7c78d569ee28b9d0deea66ca7376fe6784aca1b7718e5df780f767a. 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/QZES62499554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6384ce7b7c78d569ee28b9d0deea66ca7376fe6784aca1b7718e5df780f767a. 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/QZES62499554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb999f28fb2911e45d077fcc0bbba6dba0516e6fad5921f0d00630ce71fd256. 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/QZES52310381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe437cde1320f045a3f6892ed6d693fd1d01dca70ef9d22e2062cb32a63dde2f. 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/QZFYZ2361519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e27cc63cfd1ae90eb03e284534a6ef666a2b3d1c8961bc164fc2bd2c648813. 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/QMDA62324181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd673b9173ef4d867e699f1d53b9c08961929c03972d15e87dcd112764de65955. 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/ES75E2204735.