Right. In a strict two‑party client‑server provably fair system without economic penalties or extra trust assumptions, eliminating last‑actor bias requires external future entropy (or an equivalent third uncontrollable source)
I looked at VDFs and custom MPCs, but they felt like overkill for a dice roll. Drand is basically a "pre-computed" MPC that anyone can verify with a simple curl. It hits that pragmatic sweet spot for a trustless audit without the "math homework" for the user...
It turns the server from a "Judge" into a "Timestamped Vault" that can't hold the outcome hostage if it's unfavourable, giving the player a winning ticket they can verify independently.