Lehlohonolo Molefe, known professionally as 25K (or 25K the Plug), is a South African rapper and record producer. He is best known for his 2017 single "Culture Vulture", which surfaced in early 2019.
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 0x143ad7bb6273c467a99b71e6bc76b8f7879d2ac7b692892880155d6ffb0f84e2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/deee2f03-dd0b-4ac0-82f7-c3c46593aba1.json and https://artists.proofprofile.net/proofs/artist/deee2f03-dd0b-4ac0-82f7-c3c46593aba1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).