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 0x7eafa88882e0ca8000949f94a1507d07d279fc399a42d0e2659438bb5685469c. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3e99a66-aff1-4df3-b4b1-d63eb7326680.json and https://artists.proofprofile.net/proofs/artist/e3e99a66-aff1-4df3-b4b1-d63eb7326680.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CAIM : Aiyoku no Eustia Original Character Song Series
Daitoshokan no Hitsujikai -Dreaming Sheep- & Hokago Shippo Days Original Sound Track
TV Animation Daitoshokan no Hitsujikai Original Sound Track
Daitoshokan no Hitsujikai Library Party OP&ED
Sen no Hatou, Tsukisome no Koki OP Theme
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 0x38593e49a700c70bd67839edd33065335e0581dc245413b000a171605c8ceb01. 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/TCJPF1727790.
Sen no Hatou, Tsukisome no Koki ED Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028cb32d503403a4d7cdec793a765ad8f489778487bbbe26bd8fc3d607b9fcf5. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCJPF1727813.
AUGUST LIVE! 2016 Acoustic Arrange Collection "Soto Nostalgie"
AUGUST LIVE! 2016 アコースティックアレンジ集 想桃ノスタルジー
トラベリング・オーガスト2017 アコースティックアレンジ集 桃幻ノスタルジー
Travelling August 2017 Acoustic Arrange Collection "Togen Nostalgie"
『大図書館の羊飼い-Library Party-』Original Sound Track
Daitoshokan no Hitsujikai -Library Party- Original Sound Track