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 0x8143e684c605d8d05fe3d7ad5d72eb0eb51f643b5ed66865dcead33a5f5587fd. 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/1daf2955-74ee-4d8d-b164-c5cc38953650.json and https://artists.proofprofile.net/proofs/artist/1daf2955-74ee-4d8d-b164-c5cc38953650.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Food for Thot (Freestyle) [feat. Shisui]
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 0x63282cc023bcbe09898fd286949fbf784461721093aa69a26b4ea956f0e663a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZRP42321487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f7da622475743965440b5d91a0d710531192875551049d738031842cf8ba47. 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/QZRP42321488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e6ce9957d176b8d6ae3e749b8e7a2aba946fefefdbd3d0784a6005b5960240. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:09:25Z), 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/QZNWR2300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9335884c850961844235ce81169f206fc8a230cc1abf798374d22524218f72. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:52:56Z), 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/QZK6J2391356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c02d1978734de9f62ea31466bf5e8feb0736c6cb414b25fbfd8108b32b469f. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZRP42321489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5880ab6edbd0b7aeb66e8f0a53b6a37b4ac4d7bc9152a6a5538c4301bacc8425. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZRP42321490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2ee8cb1defdba060affcdde351202eb290558a90cde509014fa4a2b41058c7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:41:58Z), 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/QZRP42321491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0281c44fb1db6ec1b38e3cafa71f4ad386d53f63cddb6818bf70a4e1121a094f. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZRP42321492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dcd3fc0f91a9e260991349581a64407dff89c324e3fa9d3e5068c1f6626cc9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:03:52Z), 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/QZTB52403823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6d499d18b95ab5be4979d4e3376cfc4655df2221dffb219ff8deef88b15d54. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:30:42Z), 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/QZDA82474968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a5fb6c18bf84bfd9df63a5c24dffc885d57477b1847953e90ea00ef7a0d6e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZK6M2422325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197e0f3dea624fe0f1a50c7d686467d96cbc175d99dd54b06c28b7b2fc769e74. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZTB52403824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3287b55fc3df535ffd3c64fdf08bd287f4864efd18e8ddd99e1d80bb913546. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB52403825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71250b38770dac02174f221a110a6eda67db3a3d278961fedd036b32e191d539. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZTB52403826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb995e50b69471a151b3f87ba47468ddcd95440acdb931d4db24cfed01e8994. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZWFE2460720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f8a1e23cee64b30bf15b5368309a56afb9a91d1f0ed0ea9569eaa5fafd424b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZZ7M2472168.