1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x533778ca308872b8a63db25c01c6947ddf927228fabe50432d128cbdcaeb1a6a. 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/e5eababa-8016-4616-b619-ed6b37ee190f.json and https://artists.proofprofile.net/proofs/artist/e5eababa-8016-4616-b619-ed6b37ee190f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
바리스타 블렌드(Barista Blend Vol.11): 아인슈페너(Cafe Einspanner) Barista Blend Vol.11 : Cafe Einspanner
녹차덕후 (Eng Ver.) Green Tea Mania (Eng Ver.)
바리스타 블렌드(Barista Blend Vol.16): 터키 커피(Turkish Coffee) Barista Blend Vol.16 : Turkish Coffee)
그냥 모자가 갖고 싶다니까 (Eng Ver.) I want a hat (Eng Ver.)
아이스크림 또또 (Eng Ver.) Ice Cream, Ice Cream (Eng Ver.)
그냥 모자가 갖고 싶다니까 (Inst.) I want a hat (Inst.)
아이스크림 또또 (Inst.) Ice Cream, Ice Cream (Inst.)
축하해요 기쁜 크리스마스 We Wish You A Merry Christmas
바리스타 블렌드(Barista Blend Vol.13): 과테말라 우에우에테낭고(Guatemalan Huehuetenango) Barista Blend Vol.13 : Guatemalan Huehuetenango
아이스크림 데이트 (Eng Ver.) Ice Cream Date (Eng Ver.)
아이스크림 데이트 (Inst.) Ice Cream Date (Inst.)
튀김 앤 순대 (baby ver.) Crispy & Sundae (baby ver.)
편의점 앞에서 In Front Of The Convenience Store
편의점 앞에서 (Eng Ver.) In Front Of The Convenience Store (Eng Ver.)
쪼꼬우유 (Eng Ver.) Chocolate Milk (Eng Ver.)
쪼꼬우유 (Marine Ver.) Chocolate Milk (Marine Ver.)
편의점 앞에서 (Inst.) In Front Of The Convenience Store (Inst.)
바리스타 블렌드 (Barista Blend Vol.17) : 에티오피아 시다모(Ethiopia Sidamo) Barista Blend Vol.17 : Ethiopia Sidamo
나비인가 하노라 (Inst.) A Butterfly Girl (Inst.)
달님을 만나러 가자 (Inst.) Let's Go See the Moon (Inst.)
달님이 오신다네 (Inst.) The Moon Is Coming (Inst.)
고양이와 나비 (Inst.) Cat and Butterfly (Inst.)
달밤에 만나는 연인 (Inst.) A Moonlit Lover (Inst.)
캐럴이즈백 (Carol is Back) Vol.1 Carol is Back Vol.1
너는 나의 크리스마스 (Eng Ver.) You Are My Only Christmas (Eng Ver.)
산타가 되어주세요 (Eng Ver.) Be My Santa (Eng Ver.)
너는 나의 크리스마스 (Inst.) You Are My Only Christmas (Inst.)
Let's Go Get the First Snow - Instrumental
Angels We Have Heard on High - Instrumental
Angels from the Realms of Glory - Instrumental
캐럴이즈백 (Carol is Back) Vol.12 Carol is Back Vol.12
캐럴이즈백 (Carol is Back) Vol.14 Carol is Back Vol.14
It's Because of the Spring Breeze (Inst.)
There Are Days Like That Happens (Inst.)
The Sunset Of A Travel Destination - Instrumental
Oversleeping On A Fluffy Bed - Instrumental
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 → block OTSBitcoinBlock must exist at that height 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 0x3c27df6095d56ef266560ab8ae8551ccff9d38c321f9a983aece8230cc16c3fe. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZK6G2046667.