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 0x8c4421a173be963a411334a719755096dcde1311b47bfab591282546491d76dc. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afbb2b13-30eb-48d8-8c5d-2eac08cd34a9.json and https://artists.proofprofile.net/proofs/artist/afbb2b13-30eb-48d8-8c5d-2eac08cd34a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
フォレスタ珠玉の名曲集 vol.1 ～あなたといるとき～
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 0x20275ecb604cea3b5f3d49fe096996a62929d02310e2192a42fb8d01c4e437a4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPTE02005630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abe4331a28a122a381f4584d0a43188fdd9932288b65043388685b06f79d3f5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:01:03Z), 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/JPTE02005680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9785071f6e1cf55b91ee242c943d72629674554a2738a2bed16202ef987e180e. 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/JPTE02005690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf444f366293deeefb8bb7e15c245697947a8c12bb54d951c64b14887194aab20. 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/JPTE02005700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95227eab020da42f1bfdc68b4e51773f52fc721667c85ee42647c77bd98f7103. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPTE02005720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcfc624c851fb78b18c299d4fcc839d6afe0d33685499d3b3d20a2af850057f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:55:58Z), 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/JPTE02105870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5bac7afbf94eda65d0359daf0863880229d19eb5d1a0c36c08299a3d270578. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:21:54Z), 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/JPTE02308650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbed3fc9b47b4e538cd73f8bde5674b30209fe06ff20540da1fc58c7b6136d2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:01Z), 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/JPTE02308660.