Block Hashes Aren't Random Enough: Why DLCs Need Verifiable Beacons

Block hashes provide predictable randomness that miners can front-run or manipulate for profit, as demonstrated by the $1.8M PancakeSwap exploit in 2021. Verifiable randomness beacons eliminate this vulnerability by aggregating multiple independent sources and signing results cryptographically, enabling trustless, offline-verifiable attestation.