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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1629c6565aefba8ea9ae37f34e06ec1b6871f8dab5c87af560286b17a187318. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5de85b79-7a0a-42eb-9d6a-1b19f382d6ad.json and https://artists.proofprofile.net/proofs/artist/5de85b79-7a0a-42eb-9d6a-1b19f382d6ad.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb2fc3b948862dcef078fc53faddfbe5d443f4caf4e098a91f825cf6e4d7af0. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN001400138 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f33aecaec869a4bbf27ba7d6d8aa4680166e63361f48715f146a14a43db04f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN001400300 — a six-check JSON result.
「REAL-リアル-/恋色パッション」 (【橋本環奈×アイカツ!コラボver】Loppi(ローソン/ミニストップ)・HMV盤)
「REAL-リアル-／恋色パッション」【橋本環奈×アイカツ！コラボver】Loppi(ローソン/ミニストップ)・HMV盤
「君がいて僕がいた/愛がーる」 (通常盤Type-B)
「君がいて僕がいた/愛がーる」通常盤Type-A
「君がいて僕がいた/愛がーる」 (通常盤Type-A)
「君を見つけたあの日から僕の想いは一つだけ」 (通常盤Type-A)
「君を見つけたあの日から僕の想いは一つだけ」 (通常盤Type-B)
「君を見つけたあの日から僕の想いは一つだけ」 (WEB盤)
「君を見つけたあの日から僕の想いは一つだけ」WEB盤