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 0xc318a591e22cedf3cb0843f6167cd46a3cab088e00ab15337f02a6b5b6d4a19d. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96c25d96-7da8-4fad-93b4-207bf2654949.json and https://artists.proofprofile.net/proofs/artist/96c25d96-7da8-4fad-93b4-207bf2654949.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
HATSUKOINO EHON (feat. Hanaarare) [Cover]
Kawaikunaretaraiinoni (feat. Wasurena Miyu) [Cover]
Kawaikunaretaraiinoni (feat. Kikyou Himeno) [Cover]
Watashi Idol Sengen (feat. Wasurena Miyu) [Cover]
Kawaikunaretaraiinoni (feat. Aomi Hikaru) [Cover]
Sukichuuno (feat. Wasurena Miyu) [Cover]
Kawaikunaritai (feat. Kikyou Himeno) [Cover]
Helloween night party (feat. Kikyou Himeno) [Cover]
TOUKYOU SAMAA SESSHON (feat. Touka & Hanaarare) [Cover]
RABU HOISSURU (feat. Aomi Hikaru) [Cover]
Yakimochinokotae -Another Story- (feat. Kikyou Himeno) [Cover]
halloween night party (feat. Aomi Hikaru & Megu) [Cover]
ヤキモチの答え-another story- (feat. 桔梗姫乃) [Cover]
AINO SHINARIO (feat. Aomi Hikaru) [Cover]
Sukittyu-no (feat. Kikyou Himeno) [Cover]
SEKAIWA KOINI OCHITEIRU (feat. Hanaarare) [Cover]
JINSEIWA SAIKOUNO HIMATSUBUSHI (feat. Kikyou Himeno) [Cover]
HIROIN TARUMONO (feat. Wasurena Miyu) [Cover]
ハッピークリスマスパーティ (feat. 桔梗姫乃) [Cover]
HappyChristmasParty (feat. Kikyou Himeno) [Cover]
Kawaikutegomen (feat. Kikyou Himeno) [Cover] [Chinese Ver]
秘密のバレンタイン (feat. 勿忘みゆ, 桔梗姫乃 & 碧海ヒカル) [Cover]
Secret Valentine (feat. Wasurena Miyu, Kikyou Himeno & Aomi Hikaru) [Cover]
Doutan Kyohi (feat. Kikyou Himeno) [Cover]
センパイ。 (feat. 勿忘みゆ, 桔梗姫乃 & 碧海ヒカル) [Cover]
SENPAI (feat. Wasurena Miyu, Kikyou Himeno & Aomi Hikaru) [Cover]
motto ichigo ore (feat. Wasurena Miyu) [Cover]
OSHI HEN NANTE YURUSANAI (feat. Zashiki Warabi) [Cover]
WATASHI AIDORU SENGEN (feat. Kakyoin Papiko) [Cover]
hokoritakaki idol (feat. Zashiki Warabi) [Cover]
Kawaikunaritai (feat. Kakyoin Papiko) [Cover]
Aidorudeyokatta (feat. Aomi Hikaru) [Cover]
愛しちゃってるよ -another story- (feat. 勿忘みゆ) [Cover]
Aishichatteruyo -another story- (feat. Wasurena Miyu) [Cover]
Kirakira (feat. Aomi Hikaru & Zashiki Warabi) [Cover]
Biba! Wagabuisei (feat. Hanon, Kotoha, Wasurena Miyu, Kikyou Himeno & Aomi Hikaru)
ビバ！我ガV生 (feat. Hanon, Kotoha, 勿忘みゆ, 桔梗姫乃 & 碧海ヒカル)
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 0x905b454d14dd4a90fc8cef2619357e033e3506e4c3100a7cc17003f973124c42. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:33Z), 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/QT66J2563991.