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 0x5eac3a1020eb89ee6477254c64432935b5ef5d962b2c2b2597c08c75ccfe2657. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd42f42e-9a5a-4372-8eb1-e0e7c0e1c224.json and https://artists.proofprofile.net/proofs/artist/fd42f42e-9a5a-4372-8eb1-e0e7c0e1c224.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
パワフルプロ野球 VOCAL TRACKS パワプロ 30th Anniversary Edition
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 0x60978e1233928a087bc17f68176e596642346571545968aa96dccc6f3d4ec3fe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPM202400655.
胸いっぱいの夢（実況パワフルプロ野球11サクセスエンディングテーマ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ce7b6445a0607d1287b2db59455cb89f68f3b78fdc3c7b1f865a6481c999a7. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:08:28Z), 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/JPM202400670.
Catch Up Dream!（実況パワフルプロ野球10主題歌 ロングバージョン）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7708e43293cda3da459743eb961e16b38ca1862918c6cc4ec02c2f63f73b424a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPM202400677.