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 0x142b2fb9077ea7d00a72bff53ae24883cf43b5537b065c7691a0323190dd8fd6. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63fe5471-4948-478e-9d16-3e09cbdb7b86.json and https://artists.proofprofile.net/proofs/artist/63fe5471-4948-478e-9d16-3e09cbdb7b86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ヴォカリーズ 〜ヴァイオリン名曲集
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 0x6b103f8e089c408cf94fd3be9b592be364237c7f4f6c590348e51926b12e30e8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPCO09236260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a011aec9e7f06ba65de8db90eaca6e3b76b37462d64d99315ecbc6c6f97454. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPCO09236360.
フランス・ヴァイオリン・ソナタ集
メンデルスゾーン：ヴァイオリン協奏曲／ヴュータン：ヴァイオリン協奏曲 第5番
フランク & シマノフスキ：ヴァイオリン・ソナタ
ラロ：スペイン交響曲／サン＝サーンス：ヴァイオリン協奏曲 第3番
ブラームス & R. シュトラウス：ヴァイオリン・ソナタ