Be.A (, shortened from Be. A or Be an A; formerly known as K-Much) was a South Korean boy band formed under Chrome Entertainment in 2014. They debuted on 7 January 2014 as K-Much with the release of
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 0xa87b93417aee454a9de7bdb154ae3e018d358abb324e74adce8f1e22968c32c6. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1bffbd3-8aec-48dc-a288-d6b862532b7a.json and https://artists.proofprofile.net/proofs/artist/e1bffbd3-8aec-48dc-a288-d6b862532b7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).