is a Japanese musical ensemble and doujin circle from Sapporo, Japan. The group is primarily known for producing rearrangements of music from the Touhou Project series of shoot 'em up video games. Th
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 0x9dbd8cc0893e5f4e8cbaec7dc1d77a34612db093e8fd35838edaa49f5000e4cf. 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/9a82d1e5-7554-4976-8ece-fc5c16b893df.json and https://artists.proofprofile.net/proofs/artist/9a82d1e5-7554-4976-8ece-fc5c16b893df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
みんなのパーフェクトチルパ天国
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 0x0e5be2e06a11472d3123e56f1b376d66ac5fd266c25f7de96b41b86aa2cc3797. 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/JPI961900239.
チルノのパーフェクトさんすう教室 (feat. 抹, ｙｔｒ, らっぷびと) - TOS Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380ccf4a706edb995f422afbec4f7d5730f12628e6e3f07fef926a86148bba87. 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/JPI961900240.
チルノのパーフェクトさんすう教室 森羅万象 Ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0905a9a11295f65385b62896b828fe7670d52d9e7efefd58407ad962370d5fd0. 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/JPI961900244.
チルノのパーフェクトさんすう教室 さわわ疾走 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e200b3348edce854d03d8df10a654433e772ecda7f0e1d330f534750e324e0f. 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/JPI961900245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcfc8a921b935ae9d00adcd4079ebe56b1a58f7a810923d95ca5ab5019382bc. 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/JPI961900247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641dfa0ea048891dffd4433024e57a3b97ba930bef5c0e1078b841057aa206fa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW562112033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7eb1d04967a70f249b43550d03d52f117063702a390e9a08731e5d829343aa. 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/JPW562112036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8e7a132625c058a4018e834b0c88929a877bf69c88d0195f5aafb68b681225. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/JPI962300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f7bf7a1448680ec645ae1cb89c9f9a4394f3848e4c5d3500ed64c7f85d8b8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPI961900224.
【東方ニコカラ】秘神マターラ feat.魂音泉【IOSYS】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bb80bf348a354b143d457010b8cdd14ad5e293560c0e22775512d18590024c. 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/JPI961800031.
チルノのパーフェクトさんすう教室 ⑨周年バージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f968d5243f035219305b6221e38ba48e8573d7bafb92bed9a72250de8d0ef51. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI961700138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ef3a6a320fb5aafe84ac7cf451ac8e8aec6f7ee7c770dfa80c9127ba9925cc. 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/JPI961700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc4cbb3b1200ea2d8edb5aa86c2cb05b527eab23a7217c5749768dd84d9c08. 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/JPI961700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501fee816b54469212e42ede39b41aafd50589bad7f198d32c67596048339527. 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/JPI961700142.
はいぱぁ電波これくしょん！ ファンタスティック★大和編
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c16d896ccba5164b4e75eda469d0aea77cff1f2c7811b2f32efe6eebdf18a0. 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/JPI961700085.
東方ゴールデンタイム ─イオシス東方コンピレーション vol.25─
明日なき暴走！クラウンピースを追い詰めろ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aaa00a8598b592b9a64653c84dcb8a60eca0fb3ed30a2d0ae079d899392de0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI961700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a635dac487c5a585688f4dfdf5f52a4b38aa3d2ea0bc54eb65ddc87170475f1. 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/JPI961700103.
メイド・イン・きゅんクチュアリ☆
東方極楽湯界─イオシス東方コンピレーション vol.24─
むしみこうにゃーのハッピッピー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da313a8dd4a77f1b14a3fa9fcf9c938a7fbf5184206be37e46617c9db2b18a7. 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/JPI961600214.
イタ電はやめて！ ぼくらのスカーレット・コール
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe4ef5993bc6ef1c5f426d40f94557d45e5814217c1252dc5184435dcb1a8d9. 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/JPI961600216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb2d84ca1d74df6eabf8c5874a811f734867a7d8969bb1af73edd556df9f650. 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/JPI961600197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6c66a1cf6b8302c53ae23bfcf61f07b41f54f0d3260ce982f855b2ea1749c1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPI961600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291e2a3a4909f69f02995c7f409c1201ab395eb44b6b7a7a5591de086b9b649f. 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/JPI961600200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb379ad86a1ce0831538d1887e529fb97967c660dc0611a85b8b6c6cb1296d1c1. 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/JPI961600202.
魔理沙は大変なものを盗んでいきました
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bf7ef3cfc6188b6ad74f27ea21bacdc0b22e67841e787c0eed12b149957522. 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/JPI961900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe894e69bd7d6b9867f600f251958651e6700d9e2c2bfb9eee9e27a348496bc. 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/JPI961900165.
はいぱぁ電波これくしょん！ アメイジング★炎上編
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1f5fc669fb8bb753d6510d06faa024cca69f50c7fef81670a99a3a6ce395d8. 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/JPI961500145.
げきリミ！ ─げきおこシリーズリミックス─
PUNK IT!TOUHOU!3 -IOSYS HITS PUNK COVERS-
私を喰らわば花まで喰らいつくしてよ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eea0e558990dc87fd1f50753619f36634458ea6ac6a8fb6ada82563c0f04e7. 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/JPI961500065.
GENSOKYO DEMPA EXPO ─イオシス東方コンピレーション vol.23─
スカーレット警察のゲットーパトロール24時
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65795ca9cd58a2a815f2cad792efd4d81a0cf912dd125150ba95644e8fb5d304. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI961500059.
はいぱぁ電波これくしょん！ -フリーダム★東方編-
マスパでシュッ☆メイドウィッチまりさちゃん
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f220edd49a9ca3a3f8981909db5b1fdd896164fe6ac88d72e66b75b2e1d560. 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/JPI961400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e4c4222a2033c6671b3dad0d9fc72b8a32c71efbb2fe0b0635bd942a894235. 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/JPI961400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388850fc4740804cedefbf0323d169ee7351e2340968f658280abf5004485d70. 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/JPI961400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41be7248117710c4ba9edcd39110823bd62ce918034120228f1319689455b10c. 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/JPI961400102.
わかさぎ姫の命を懸けた寿司ネタ100本勝負
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa975f11d8d494d46256fff4813c48bca7f0fd46849aab0c8fa8565e936db9a17. 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/JPI961400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc553b8078d516ec8f38c8c9b0e086ec34ba7eed507db3c80d2ce6e1fe0f6d2. 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/JPW561904585.