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 0x3646313e066b7bffec628263f5a046c942e304c46d2271bb5a83df88a7c7a959. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92056f9e-33cd-41c8-bc82-3194fe7868f6.json and https://artists.proofprofile.net/proofs/artist/92056f9e-33cd-41c8-bc82-3194fe7868f6.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 0xeef974a8d26d03691db6b768edd64e74fe13958255e12614e6d9360c53e1db91. 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/CA5KR2309075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3295b78ce1905a5bc2a09c77dccfa922a4b1e90d180b03c8b106ae050bb0abf1. 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/CA5KR2309069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701655565f9205a3a7b579478dd8ea51631c292ec1f41793f53d8be017dbec59. 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/CA5KR2309076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413252a572312c39823fb6a412cc03d67ed2c55dca8b78726a3a9a452cbf1d1b. 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/CA5KR2309078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5cbc81c9c267da7608e65c9dc8ebe9a8f84f2c3cad45ec148f84a78b25d859. 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/CA5KR2309079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c75c1942ff2acf02f4c6cce1fa93c2bc4df27f8a5864488be3f04b575950f8. 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/CA5KR2309080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54db83a5bda4907d3b9e107e56f5d5e9bf31b6bc5883aecadff6e54e29fcc976. 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/CA5KR2309081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf1a01826cdee6ccc57a451a1f5dafb9f3feaf3f21c827067bde871e8ed5eac. 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/CA5KR2309082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee99eb18a86611b56382ece5d81d82bd0494205741af04a41b35712737936baa. 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/CA5KR2272895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d15e0764f76b0c057243a97eff95846de01cc769072f4001153dad96e241e1. 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/CA5KR2309085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fad428b7c62ac3737901fdacbab33d5fb89604a0c2b404e771bdc3b88ce86e. 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/QZRP52130347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4f2b7f3272182c1f0f044a85a883914239fae11532136d1d739b8ce008e81a. 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/QZRP52130350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faa81e584225038e4756a1eb66747949d584616df87b7b35a961c2e99c6e58c. 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/QZRP52130351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e59e48854d752b18f715397e99a142fcedf7ad36ce4e5d2616edb54c728d599. 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/QZRP52130353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7ec8ac2ef6e2c12afdedf1a8b77807d11b4f235519da531c6f4110c489f7bd. 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/QZRP52130354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d188e0b31e13eeb8bef57661950ab772ba81591f84813073ee90c453291d2. 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/QZK6M2116500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7ecd9d050b1732fa53db7df5327120c6d9019e0cf2fbc1f70d9a8ac55df34a. 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/QZK6F2010152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9518bb7f03086c83b58795ef009c1aec5107e6d5c1bc39b2184118b8dd3bf88a. 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/QZK6F2010155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830395628b5d58aa156334459dddbee57dc26199adb8b65806e8238b267f6fc7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:18:16Z), 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/QZK6F2010158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f1d9b6777349ebbe181c1d28d89856d54511a77c6210db83cc773ccbed46ab. 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/QZK6F2010159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ebed3d54de7ff3d5dd92236966113b39c75228a1fff4610f87e6aa171b2a1e. 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/QZHN82044897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56284580dc12ba810ae1d047becf42af7fc9414024f25ff87b158c06b5f719. 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/QZK6F2010160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f62b3cd7551f82cf71c3157e968e58fd5708e1d5551355393c519e94c9b0a0. 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/QZK6F2010161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a49c3bb47403cc681e4f0a86ea749a2ce8c176cf2919dae7c5e759f1a409fd. 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/QZPLS2442363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53588837389a9045f79a511de2ca75c2f353d898419c656dc4dda15ee1d7872. 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/QZES92454840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d9d2de50490b7a7bbe36fa88c0e6ff19134587dc6701a408ed980073aefed8. 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/QZWFJ2338377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3295b78ce1905a5bc2a09c77dccfa922a4b1e90d180b03c8b106ae050bb0abf1. 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/CA5KR2309069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f481e1b478ea4e2baf6a8eaee3d8aa863f6457b357662890c1b1495513a913c. 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/QZPLS2259759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60de1bcb9811fea6b8db59808176cbcaf6d28ca2d355798266f43c3fb19b8c8c. 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/CA5KR2286110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee99eb18a86611b56382ece5d81d82bd0494205741af04a41b35712737936baa. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T17:29:18Z), 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/CA5KR2272895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d188e0b31e13eeb8bef57661950ab772ba81591f84813073ee90c453291d2. 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/QZK6M2116500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88725a8d544561bd8cd6e22e5dc9053f7ac5c0096542bfe73dd6e6f86f6ae1ab. 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/QZDA52159308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56f7cca39171a541eec701931368c2fa9be6b741006714813d4a94d557522d0. 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/QZFZ62163607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d274768d3e6f926ea81715f374628c9e28d9b003e93cfff302f1f604ae2dda. 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/US6YF2000014.