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 0x9295a201a31cc76d890f24c618d0962afe4da8e11a9c505232185624517429aa. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d39c435-d4c3-4c61-9ff3-bfd651ce926b.json and https://artists.proofprofile.net/proofs/artist/2d39c435-d4c3-4c61-9ff3-bfd651ce926b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x4e4578cf2c70da2dd373acd438d5f8eeee05825813cb199c102aa0c6ef12eeeb. 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/JPW562112662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd901654e1285bab5ba72361a00e78ffa6f8ce4466f0d81c5b729c735de450d81. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:38Z), 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/JPW562112663.
シングルズベストVol.1 果てなき風の軌跡さえ(リニューアル)
シングルベストVol.4 無限の旅、僕らの選択
色は匂へど散りぬるを(Fractal 1.5ver.)[with 天宮みや & 柚木梨沙]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa538c137e8aec6e88d8bd0094b69ba86bb1b4a6abfa3d034534d83607493c52a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPW562001667.
シングルズベストVol.2 無邪気と言う名の正義
シングルズベストVol.1「果てなき風の軌跡さえ」(アニメMV使用曲「果てなき風の軌跡さえ」収録)」
3in1CD「彷徨いの冥」 Orig.Ver.(幻想万華鏡挿入歌「必然のカタストロフィ」、アニメMV使用曲「彷徨いの冥」収録)
東方アレンジ 神楽めあ＆幽閉少女コラボ vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff95a9c4f1a4835c684ba109e3052a83ba5213b6c3bca065d505f33fbc92764. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:00:58Z), 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/JPW562111877.
東方アレンジ 神楽めあ＆幽閉少女コラボ vol.1
時計仕掛けの命に抱かれ(with 神楽めあ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34673e113866ef7a0f45659cd9c416a1de163a2b8519af2a7b7245a9c5970fd6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPW562111869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1169eaaba6644eb7b852f46fe81a7b7e833197d671e495e23be36a7ca235b29. 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/JPW562111870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22cab54c3d1c46dcd24610a8272c01e9eda2caac5c250fe996569a1d8c6893c. 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/JPW562111918.
オリジナル楽曲 神楽めあ＆幽閉少女コラボ vol.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09916751ed7dcdc2423d9d8ea54ad5392fd076513d8f905e4ff59b32405e3d9d. 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/JPW562105400.
星空を地に堕として [with 神月紅璃夢&十色奏音&凪ユイナ]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd80627633ccc17570b5708c0569c8ce2ae8fd4fd6e46face9a15ee3f21f449f. 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/JPW562103936.
雲隠レシ空、誰を想フ。 [with 天宮みや&姫城碧海]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd3a44540767f092dff77b21af4ddac795e54adfdc766cd3d08809697a4b9fc. 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/JPW562103919.
不可測的メトロポリス[with 天宮みや & 姫城碧海]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1a736a97b274f260f9ae1e5909d766c4923fed1f626f17f74737b33a3f3b38. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPW562000936.
シングルズベストVol.3 その日、夢想は共鳴する