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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a8cbfb4791b929ffc124437c4fa5f9e6533745ad0f133a5bbf90e305bebe4. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1158034e-48f6-4e75-b431-cc0475c5179b.json and https://artists.proofprofile.net/proofs/artist/1158034e-48f6-4e75-b431-cc0475c5179b.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794b6023ac752a689c87ece5dbe266e60d1e257d86e0d81d7d17b6a20218456e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UKN6K2200693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364bcc3088eb8127d68afa61913d786692c3602dddd644b9e76aa1195f95f0bb. 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/UKN6K2200694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e3a2ba3bf039d4fb62ca53ba681e677e4ddabc301fc1b07d65b5d50ae88e39. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKN6K2200695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d890fca5c2564290516e16ba72b277d1b9d49e92e3775c1ef511ffd3fa2a934. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/UKN6K2200696.
Amazon Prime (Jungle) - Interplanetary Criminal Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a41524be70ccabc9fd3437bdb7fa31a34449748fb6e2a4a26a33ea529b470e. 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/UKN6K2200697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ce4cf83ea481defb9b3fa1f5eef0381cf43f2caab90dec5cd002f08863dd97. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UKN6K2200698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16963a0c7636481b08e7faee2ca178195aaaf98aa948ad264d0403ae8829faf6. 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/UKN6K2200699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f7ee919e61ebefe77faef65418a0e92aced6e81079c668050f615be86776e1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UKN6K2200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380d837d208d0eed440e012bffab61b5c0ce95e664990e83b486446638d0f87a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKN6K2200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7492dab92db87a914a3351d501e2be95e165b0d44a6d762ee5359fee632032d1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UKN6K2200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621a9df88f78fe61b58f2946bec900f54d478f458e052522599e8ac5f5fa6bc9. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/UKN6K2200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfb62b03edd260eb2f8b621f1e91b8c19217948c139d4c97dd587e7f474bfa3. 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/UKN6K2200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d9579355d443e9f51118c2689e17647c2c1f202c29af4bf246d65ba903d5af. 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/UKN6K2200716.
That Got Dark - Interplanetary Criminal Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f17e1eb1364b8402e18ab859d9e30b6345d221e708c605be4d1be12d64e451. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UKN6K2200717.
Roof It - Soul Mass Transit System Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825a38f4e093411dae8489ebf3dd550faeabec667d765fff325ccad98ad5356c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKN6K2200719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc19605ffa548f223057700269627a24ac9a9c816185b51dc0804244d8e976b1. 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/UKN6K2200729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aadbbaff9e31fd7f9f402f01c3d281be37c5fcb94ebbdc85f3ea5d034a37d4. 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/UKN6K2200732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eab62689fff632a4ca8b89c5b4b1e2f567f9e29dd563052eae3446b41a1b327. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UKN6K2200734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7f6e8f9c5a221939a4b0b63f64f177027d129d7895368b5bea92827a246ed7. 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/UKN6K2200735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff665c47b3fd92585ec8f6a748ece0c7a91971e73fc18f960c616a5197c8516e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UKN6K2200740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14760e693870eb2e3c0c50c067b7e98398f0f6f763caaaf8e4105da23f7cae1d. 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/AUXN22450351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6392b45284119eaa7107937cc073ce08cd74ac648dfbdb6eb77f7d4f852ddba6. 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/AUXN22450352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690c5d585974a9ded00c8a568a0b6fffceebcbae41c251da485c5647531a5dd1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUXN22479257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173c8ba16863b910486001bf97dcef8bb69fece731ede11db9961c6e19bfd05b. 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/AUXN22479258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d07598d2eb78c957202621837a93647c411e9582f5d134bc6a0bfd299d81e4. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/UKN6K2301682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242f6d8f239485d16b73f8ee851bd8f4b0cf9e94b31e2c6d4dc48a71cf5504eb. 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/AUXN22407578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2477a1650e5a6b1fdf895cc63240402a5017b39f4f2f23d76f678ee29cc30b. 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/UKN6K2201779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850ef7871d1acb5c81c268c62b19bbf265db125c06fd803423c2a77e5b39c10d. 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/UKN6K2200691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506e6588de936b3dd274abbba6f219fa7b6fbadc6afcb2cd265dafebc531cc07. 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/UKN6K2200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99960cef38659bb14a7ae4b74267956992e3ce3a92ef1344d6912d4f0a055f60. 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/UKN6K2200687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f73ef52b62fc29cce4854539641088a38ab67d33310e9e886200182198e184. 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/UKN6K2201923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a174fa3ef613d7a332e20e78dd6bd1ae331b63315e34475d550fe5e68490077. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/GBKQU1915910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cf4445442a2b46b300e51fc7339dc757213bd6930868a6fefbaf6e04502cfe. 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/GBKQU1915933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21032f57d987a45a2959a0ba26a331fc5a7f7e5d579868d09206d57930e381c. 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/UKN6K2301652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f3161afeae48d59bfb1e896f7e7b5dece9db1bdb0a25b24b11aad614f19173. 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/AUXN22043126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fb95b32a02048ab2d453391c06237afd3dbb95908193a12d05e2885c1e1302. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBKQU2043754.