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 0x180ee84114e8d17166caddcdfad0160fbfcd1e341b28434b1babab47dcc87b59. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9487b9ca-009c-4b5b-88f2-ae2b00abe16f.json and https://artists.proofprofile.net/proofs/artist/9487b9ca-009c-4b5b-88f2-ae2b00abe16f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
東方戦車道オリジナルサウンドトラック
Instability（原曲：U.N.オーエンは彼女なのか？、ハルトマンの妖怪少女）
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 0x7504289798283891407cb546083d8840933cb2a1216e9cbeb564cb1f17ed2ab4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPW462229554.
紅魔激走劇 ～ Everlasting Reliance（原曲：ルナ・ダイアル、亡き王女の為のセプテット 他）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf113aa1ac90fbc0ea462a6a3f7675f3374fd54f9cc9c7dfa41f8c275d94b1bae. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPW462236979.
東方紅魔郷メドレー（原曲：U.N.オーエンは彼女なのか？、亡き王女の為のセプテット 他）
U.N.オーエンは彼女なのか？ -8th -（原曲：U.N.オーエンは彼女なのか？）
A-T.Tensi.On.PLeAse（原曲：有頂天変 ～ wonderful heaven）
恋色マスタースパーク（原曲：恋色マスタースパーク）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033b9c2a6385432c139b9ee4e8fb23e20a6c938f79d44bce131d484719903071. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPW462230085.
天空のグリニッジ -DiSoRdEr Of TiMe-（原曲：天空のグリニッジ）
U.N.オーエンは彼女なのか？ Ver.MG（原曲：U.N.オーエンは彼女なのか？）
U.N.Owenは亡き王女なのか？（原曲：U.N.オーエンは彼女なのか？、亡き王女の為のセプテット）
Crimson Edge of devil -SYMPHONIC SEPTET-（原曲：亡き王女の為のセプテット、U.N.オーエンは彼女なのか？）