Ivo Alfredo Thomas Serue (born 13 April 2000), known by his stage name Khea, is an Argentine rapper and singer. He is a member of the Argentine Latin trap scene along with artists such as Cazzu and Du
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 0x0aba16fa60820d93a0039d42c00e1e164557ea5a15d46931290e15150cfe5472. 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/f373ad8f-08c3-41df-acc6-cffbe0877688.json and https://artists.proofprofile.net/proofs/artist/f373ad8f-08c3-41df-acc6-cffbe0877688.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).