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 0xe942e57afed55737e2428f2b0aedd17cc01113c27ceefde5fc9ee6b34a8ff1a7. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69edc89e-e8bd-413e-9c3f-8b283411ba43.json and https://artists.proofprofile.net/proofs/artist/69edc89e-e8bd-413e-9c3f-8b283411ba43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
「男はつらいよ サウンドトラック・ベスト」 (サウンドトラック)
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 0xec946da92eaa0333ebc66d8264fa6d1fe7700991b11adb70f0692720b85b2d39. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:20Z), 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/JPPO00876860.
男はつらいよ『男はつらいよ フーテンの寅』版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3e802d8d3ee6823de5bd5f95633dd8fbc4e3bb4c3439dff0ef0b3c468d7cf3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPZ921906473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32ed18ca27f1d7eb6d167510526484516904640dc2ee3f8f46f1cf47053cbdd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPPO00876960.
殺しの烙印 オリジナル･サウンドトラック
日本映画音楽の巨匠たち シンフォニック・フィルム・スペクタキュラー 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2f89e0e06dc7a30123bce1858407d1b66ffd33b69fd252f4f0f5bd3345cc4d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPKI02113729.