Switch/逆先夏目(CV.野島健児)、青葉つむぎ(CV.石川界人)、春川宙(CV.山本和臣)
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 0xcd3e5f48c784cec1329c81dec6f12272842a2f819c319b4edfd2056ae97034c6. 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/94d39be6-9969-4e2a-8d9a-e15997171a2c.json and https://artists.proofprofile.net/proofs/artist/94d39be6-9969-4e2a-8d9a-e15997171a2c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
あんさんぶるスターズ！！ Switch「オモイノカケラ」 (Game Edit)
あんさんぶるスターズ！ アルバムシリーズ Switch
ENSEMBLE STARS! ALBUM SERIES PRESENT-Switch-
ENSEMBLE STARS!! ES idol song season1 Switch
あんさんぶるスターズ！！ Switch「Brilliant Smile」 (Game Edit)
Switch「Brilliant Smile」あんさんぶるスターズ！！ ESアイドルソング season2
Switch「Brilliant Smile」ENSEMBLE STARS!! ES idol song season2
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 0xd10b126196aa18f10d186f1e0d9ccbc59c875f1163a57aeb935d157295ab5df0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD642200102 — a six-check JSON result.
あんさんぶるスターズ！！ Switch「Romancing Cruise」 (Game Edit)
Switch「Romancing Cruise」ENSEMBLE STARS‼ES idol song season3
Switch「Romancing Cruise」あんさんぶるスターズ！！ ESアイドルソング season3
あんさんぶるスターズ！！ Switch「Chocola-Tic After School」 (Game Edit)
あんさんぶるスターズ！！アルバムシリーズ 『TRIP』 Switch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603f43f67d212962af6fe22bd8d45002b9c829663bc1105c45226195ebc0974b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD642300817 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22ac2ec4889694368965c9d2988a9a74e7cac7333a77df9fd5c04578e392c6e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD642300824 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c9a4dd8e1faee814887a70b2937e17500c2d2c8a74a573ce35fb0d7f000036. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD642300825 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc402303d7ca0eeb244dcd82941859ed8b9f59683db6da35b75fb91ae9778f25a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD642300827 — a six-check JSON result.