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 0x976ccfc1c6cdd87d5f0512d9a95a43b86d3e348d936fb590ffbfa2fd937aa8b5. 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/136187bc-8b31-4340-afc1-fe6770b348a3.json and https://artists.proofprofile.net/proofs/artist/136187bc-8b31-4340-afc1-fe6770b348a3.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 0x344c6195040a23d4d4e3723d03384ee5c91c5f4aacd77b9f07c4cab19fe58a3a. 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/QZK6G2366180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f67b4a4ecc22ba3dd18fd38523f4c7e78fa0a1f81d7f38ebf7b1e74d14384e. 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/QZK6L2319941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb185af3be15248da0f641070fb278f6a2aaf83d6ba05444f873262a8646d1f2c. 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/QZES82422551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b965b6405aaa8c795ca63610d6c997dd8470d400e209b7594cf99556bfcc13. 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/QZES82422552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0bde35c38747ce13e4d4979d4434a150d185e542d8069c3634d40d572a65e8. 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/QZES82422556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76cc4e07a5cd674b95c29b7cbaf1bb9715fae64a518cda51137e8af7bef37b9. 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/QZES82422560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2429a8c83ca0c981b8577edb2efe7d4aa09f0ece2a4a69ea68903e3a0032cb6e. 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/QZES82422562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a33e4028a3de843d2c9f45fdf05ecf1c5163cbac7e004edab28c109070cbdf6. 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/QZES82422564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a6f19e00d7f9538c5a6b97b5f3241ea4730beab0b5a9f52ee7003464427b01. 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/QZWFP2355519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11179fe2b6af432c0a23e365f595a4f1e7622abf7f6284f5cafcacc229acde1. 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/QZMEN2195484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074e25e22e4d0e83221b27551e911b69aabffb9eeecd9a31929bdb27b81368d7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZMEN2195485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715ec36370330f831dd4491596afea27afac714d6900e8ed9de5e94cb7d351d3. 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/QZK6P2117062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046e96491dd9f890432b1d80fd6536516a45b482771a26f284238f7354c1eb77. 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/QZMEN2195486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ea43510e9fc0336bd06e93e2149bfc96502b22c64f5fa615c5e98a1181d7d5. 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/QZNWR2002943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86598376c6f89b407d5f9351a10f18b9a14265acec549d7f2f4be3ff3017ea35. 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/QZMEN2195488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe7826451b6a2c275f16156a142cef305c7e275cd3b2dbe03c7b0deecdd45e1. 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/QZDA42116851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c966bde5ae713f13f7f826497aa462923fbbfab3543236585a7d7b1319fed7. 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/QZMEN2195490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a76c6ae5e5468281fa080c376df1b5998edce6f950e996b6df553f32f070a. 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/QZK6Q2096339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba26c046b6627a42a9a998ef2d21103454289bc95ee2cc582fa84e7fd2cff03. 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/QZK6Q2096344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cccff81146cc23cc1a22b8b5ce17bd5a4168d05b1675d3a6be715cb3eeb186. 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/QZK6Q2096346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec816233040a711044848bd4fd20a2a7b93c2ed97a8d642af66029eb368f0669. 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/QZK6Q2096348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75184c71169a95b3f5349fa50ff289f414d9f274812510aba265cff825465267. 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/QZK6Q2096349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e32a1e1e9abdcb4679487c0365b346613d22bf2724d11da2258e17c5b5c7eb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZMEP2465396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a6f19e00d7f9538c5a6b97b5f3241ea4730beab0b5a9f52ee7003464427b01. 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/QZWFP2355519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95de10ef5cf2325928ed659604a829bc279a4c9c95d4ca646a7ed02a6c2a984b. 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/QZTAY2346982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449a4329f77ffe32f0a0fb4d94517755b4403fdb5c3baabe01f6a74b0f6d4876. 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/QZTBB2256042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c4b3f5d2ff5d775ed27958b5fa68583d013084bb4d5ebf117df19008e8cf29. 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/QZTB22280071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b9a5b7af8318cedb66145c6b0b9c26e9541374685b34b39f30466b83ff9062. 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/QZNWZ2294621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182b05817738031121ea59e79e427646d3a185fc19b2d5e50765a5bea2cfc90. 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/QZFZ62212718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715ec36370330f831dd4491596afea27afac714d6900e8ed9de5e94cb7d351d3. 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/QZK6P2117062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ea43510e9fc0336bd06e93e2149bfc96502b22c64f5fa615c5e98a1181d7d5. 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/QZNWR2002943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cdc7fad81abcdf73ebd1dc5dfc93456a9140dd3d69ee357c55e6124d6c8ebd. 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/UK6821733319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae2ae67b08e6f4a0c94dd018fcf1ba1f0431d59aab166d256093a01eba98884. 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/UK3AZ1512211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a75e44160d336ab561d265856e49f8d9d00a3fe477d9ddc68c37ec9193dfafd. 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/UK3AZ1411234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7844c3efe4350605232fb40c25536074f67a4f3bd4ce7322cf2161fa28fa2c77. 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/GBLFP1603518.