Almeng () is a South Korean singing duo known for appearing on the reality television competition show K-pop Star Season 3. The duo consists of Choi Rin and Lee Hae-Young. They released their debut ex
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 0xa2f6f683e9f6ed5db1c688aabef97a4a9e28a9b44b641e2fc4f374f4853fc7fb. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a13a1668-5b93-461e-a7ac-078283b2bc67.json and https://artists.proofprofile.net/proofs/artist/a13a1668-5b93-461e-a7ac-078283b2bc67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
3Days (Original Television Soundtrack) Pt. 6