250px|thumb|Kafr Kanna described as "Cana of Galilee". Holy Land Photographed by Daniel B. Shepp, 1894. Cana of Galilee (; ) is the location of the Wedding at Cana, at which the miracle of turning wa
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 0x96657c53d4dd17fce531df98651080cbe432c8096d49f76a0e0b8dfb360f05c9. 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/3c2e3066-91e9-47e4-9a14-982170a81b72.json and https://artists.proofprofile.net/proofs/artist/3c2e3066-91e9-47e4-9a14-982170a81b72.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 0x0f06424af2383371f389b7bfb9f83506a311fdecbd8b5ce18664ad1664c033c1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEZC62029030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46488a3de7a897ef7ea8e63f0f88091c26cb1cace26425738a802b3f0b5f796. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/DEZC62029033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aabf329533c4d30dfff18f56ef045903ff9b3d9dfd36568c8d25881cbcb4b2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZC62029034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dd3f2ea0f0b19001d766030eb8f10f16bbb6bea5ce178d1fb948a601e0eaed. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/DEZC62029035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec79507f5ad97319bf139f96010b3062885347b4a353c3f3d5012b0c0f04e9a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZC62029037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab2f33aa2f8e3141a2a71701357eb9dc4e365241bed1fff00cb04a8c052bb36. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEZC62288138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fbc1ae90373eec23c331de77e35f7deedde991fc1e45ba0758c7ba609f4bda. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZWFK2377463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f036fb6958c20b1e8b742585a7cdced82941ba6f4534fcdbd0402f4f933453d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZK6L2455829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3013aabefe40b57f0e359bb5fa0de934478578f083ed2bf2e026a5a27a82f649. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZHN52226114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c535a7ca596e725e10805ecd7a82e8d8f06007f18e6ed74d19cded9f9559ec. 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/QZES92287602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d267d59429aad9640929d046c0fce3a533a59bde7ff0721840dd2189225391d. 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/QZNWW2190996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b188820173f21c64dd8729fedd8c9e21e345689587e8cfaf89dfd1413904b6. 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/QZNWY2052321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9323f5d03fd4977abc0f53fa6d22b6302fc45f8d4ec3cb3bb1e5bc0c89037554. 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/QZNWQ2055017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64e714b88ac18123fa015f7160080a3d27ab703a8bfdecdbbd1e4296db46b48. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZWFQ2356175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9c7d3e70276cbb087efe5aba366478353cd11baf852e4a36a9741dfcee481d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZDA62413440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cff9ce95408743e543c4ee51a026c1c2392cd4664b227c0a36a3939133d39e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZFZ42205164.