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-v10515c798f07a6b70416bfbdbd5c753430b8752801c55dbea4b444ab65b3425cf47dc279213ebce0d2679c2e23c9e0ca783450e9dceba23091b7aadc51c4e08abCheck 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/d114bbb9-4cb3-43e0-a9b0-e7ddc6d22966/draw-proof
Raw proof: draw-proof JSON · How provably fair draws work