Raffle…
When this raffle was created, Tessera locked a secret seed and published only its fingerprint (sha256). After the winners are public the seed is revealed. If the seed matches the fingerprint and re-running the draw gives the same winners, nobody changed the result.
tessera-cr-v16233170a4148afeef08ed825f270169c67f584d113dd2106dbbb0505d6b6b97a0e09602df89a92a2dd631f9c8bf97f116d584392ea6fa7dd55fa726b0c3c55abCheck the seed in your browser: we hash the revealed seed with SHA-256 and compare it with the fingerprint published before the draw.
The open-source checker re-computes the seed fingerprint, the entry pool and the winner order from the public proof. It needs only Python 3.
git clone https://github.com/Hugg1337/raffle-platform cd raffle-platform python3 backend/scripts/verify_draw.py https://api.tesserapp.org/raffles/f8202da0-bce9-4368-96dd-cbc7161f6929/draw-proof
Raw proof: draw-proof JSON · How provably fair draws work