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 0x68852e2d868bdd7224e2a57de9c788e308f1022d44fd8dcf65705d1a3a76d909. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2bee8e9-84c5-42cb-a8a9-c2c7d0ee138a.json and https://artists.proofprofile.net/proofs/artist/d2bee8e9-84c5-42cb-a8a9-c2c7d0ee138a.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 0x4e4d768c1e823cad17e754f627e417b3fcbb250dd97cd0e3b95ce8bc1056a276. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:58:28Z), 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/JPI102402477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ba4b2d1418f9f91e4d9581a587d36eed2fd1486c5321a663ced0e04019de07. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPI102402479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d7d705c284538f2f13b287b28bbb8c7c8c1845c242e7ff3ab89316b8a652f8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:20Z), 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/JPI102402480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd7bcf1ed4b4d153753fcd53e6d919e4cb3fa6c3db44c1b195439b5b0ba2d60. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPI102403575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de8204d3814ee8d07e379195d13b8b82a43612e8bf7e11ec62059395c3cd7f2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPI102500488.
そんなつもりはなかったんだけど