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 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
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 0xe6fdc1331033daeb08ae07811dca4c13ee91ea0179aee878f01340e1a2bd27be. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW561906108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f2cd4f9a81cc9f3d7e2e9ecd4ea10eadaeb416bb50b187f3e2569e72d58b92. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPW562112018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00492c034842ab630f3e74e2ced0a0750b7fe5cc7c6cd9f403b0d616fb634959. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW562112022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efd61885fad098c6e83bc0bcc49c383e8a094dec49aaceed1bad62d4c2b6aa8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW562112023.
U.N.オーエンは彼女なのか？ -16th-（原曲：U.N.オーエンは彼女なのか？）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7960e01b5f4db76d81dde8f5f83ddbd6d406a0fb421f77479335b8b2fb7834. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPW462409063.
恋色マスタースパーク -G.X.EURO-（原曲：恋色マスタースパーク）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec36e2534ae78bc2fd3f945a4ec362d876be987a564d23150bfa7e3243f037f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW462409071.
少女綺想曲 -G.X.EURO-（原曲：少女綺想曲 〜 Dream Battle）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a77097b22d890690339e3466e9d779aa2d09e5250156b1a6237b7e64897a02. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPW462409064.
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
U.N.オーエンは彼女なのか？ -12th STAGE-（原曲：U.N.オーエンは彼女なのか？）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7350ea0e9b0595218cc7e384924fab1eb305fa7dbbe512f0728caaf9323eec. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPW462409067.
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）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7504289798283891407cb546083d8840933cb2a1216e9cbeb564cb1f17ed2ab4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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.
ハルトマンの妖怪少女 2016（原曲：ハルトマンの妖怪少女）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbd9d13ba37736b1dd9bdb8d6eef955a9e7ae92eeb7f007faa5138a6d3c538e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW462229555.
U.N.オーエンは彼女なのか？ -9th-（原曲：U.N.オーエンは彼女なのか？）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4115072cb21c0cab194a80271edcbc0bdb0b92c49e85902bd528ea3d6221815a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPW462229556.
XT-SCARLET（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）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ad32639ec025744e5fe6deddb2ad62ae3a840f7ea49251f0c5c9f39c63ef75. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW462229557.
U.N.オーエンは彼女なのか？ -14th-（原曲：U.N.オーエンは彼女なのか？）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ffe0a6c2f87670eaea1256a036263de1bfe69d0eb25f0f26d85891610fb792. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPW462229550.
月まで届け、不死の煙 -G.X.N. MIX-（原曲：月まで届け、不死の煙）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af7e81412af0bffe52bb9a02843de41632fa28b4b9070cafaf85863c0494e7e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPW462229552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6303b497d0b1266bd921602d27d61c6dca35fd0bfbaf595e4772779fff0bb1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPW462229553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7d690a521fdf81bdd22b1697d926657aa46cd7fe7c50572a786da547ae617a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPW462229543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b99a721974639da394fd667a0bbff08b28b7d556e8e44c222fe667ce5211fd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPW462229547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f9638ab144200bf891254c1c9823d8e33735fa00ac5f0f227a7f3b75ab6c79. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPW462229545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803ef94a4b03c8a9e97dc5a6cfeb1424bb5e5471b11893ace4c38c32a634e1b3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPW462229548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bafd47100488b3b63bc3a24dbf13b931026823e54501df6128df21307115d8. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/JPW462229549.
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 956351 (2026-07-02T11:38:34Z), 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？）