is a Japanese composer, arranger and guitarist. Kikuya is best known for composing original soundtracks for anime series, including most notably Nisekoi, Eromanga Sensei, Bocchi the Rock!, Yuuna and
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 0x42ee0bb1eca04078c192102ff29c816c589165241456f97108afe3d79ac5b8a6. 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/91c19b92-caa6-42e1-bc2b-21625a1e6dec.json and https://artists.proofprofile.net/proofs/artist/91c19b92-caa6-42e1-bc2b-21625a1e6dec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ『ひだまりスケッチ』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 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 0x8150fea4309a31cf608cafe6a606d04a0dfd20cf3609f68fa50537537426d4f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI100700348.
TVアニメ『ひだまりスケッチ×365』オリジナルサウンドトラック
TVアニメ『ひだまりスケッチ×☆☆☆』オリジナルサウンドトラック「ひだまり・でいず・ないと」
Higehiro: After Being Rejected, I Shaved and Took in a High School Runaway Orijinal Soundrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c1739c80d46b10fa33841da170d196d2927fb0e8c09340290007402486b3a. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:26Z), 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/JPPC02110182.
TVアニメ「ひげを剃る。そして女子高生を拾う。」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05867a29bd89d473d323d8a459ab69d7f44fac4016dbe3cccde271ae3eb52361. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPX942100079.
TVアニメ「女神寮の寮母くん。」オリジナルサウンドトラック
TV SERIES "MERAMIGYOU NO RYOUBOKUN" ORIGINAL SOUNDTRACK
TVアニメ『4人はそれぞれウソをつく』オリジナル・サウンドトラック
TV Animation "The Little Lies We All Tell" Original Soundtrack
TVアニメ「ぼっち・ざ・ろっく！」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2a09167c242004122c0e0b57afc54e7a1cca4d22b84440bce55f253299b06. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/JPE302201152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2305b5f5dc1f242bfcafb9ffe0a13b03ececd25beadd2ddcbcc0eeff7f100c22. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPE302201153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46dab63adf3296b884194f0e02275a1cd7069e5c70c75ea9217eb4c3978c72e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:03:06Z), 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/JPE302201156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7238f8f4b176d2900f746436ae3763b5059580df357c88a592a984783f9c3aa7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPE302201168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899f06c4490bd73583557b8439b1022658ac35cc3e2b161412b72087f124dd9e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/JPE302201176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22226ea5df2ee0b97d3a521637494f620dce4d75a930a2b9101862c186b5e2ae. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/JPE302201179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb531eb81d45be057c3f9e83fae629a887bf0200545d8bafce61fb82f6e3dfd7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPE302201182.
BGM FROM TV SERIES ”HAREM IN THE LABYRINTH OF ANOTHER WORLD”
TVアニメ「異世界迷宮でハーレムを」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181c9181e8ed397d648b1624c986c49d82fde917c143c8e8f0829dce3e57c59. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPD732400845.
TVアニメ「忘却バッテリー」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181c9181e8ed397d648b1624c986c49d82fde917c143c8e8f0829dce3e57c59. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPD732400845.
TVアニメ「ネガポジアングラー」オリジナルサウンドトラック#1
TV SERIES ”NEGATIVE POSITIVE ANGLER” ORIGINAL SOUNDTRACK#1
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