How provably fair draws work: seed cryptography and verification
The mathematical proof behind Loop'D mystery boxes: pre-committed server seed SHA-256 hashes, client-side entropy, and independent draw verification.
What Provably Fair Means
On conventional mystery box sites, collectors must trust that the operator did not manipulate odds in real-time or steer high-value prizes away from active players. Loop'D eliminates trust entirely through cryptographic verification.
A provably fair draw is a cryptographic algorithm where the outcome is mathematically determined by a combination of a secret server seed and a client seed generated by your browser. Crucially, the server seed is committed as a SHA-256 hash before you make your opening decision.
The Step-by-Step Cryptographic Protocol
1. Commitment: Before each draw, our server generates a high-entropy Server Seed string. The SHA-256 hash of this string is published on-screen. Because SHA-256 is computationally infeasible to invert, our server cannot change the underlying prize without changing the published hash.
2. Client Entropy: When you click 'Open Box', your browser generates a random 64-character Client Seed. You may also provide your own custom seed in the provably fair settings modal.
3. Draw Computation: The system computes HMAC-SHA256(ServerSeed, ClientSeed + ':' + Nonce). The resulting hexadecimal hash is converted into a uniform floating-point number between 0.000000 and 1.000000. This number precisely selects the rarity tier and specific asset from the published box prize pool.
4. Post-Reveal Proof: As soon as the animation completes, the plaintext Server Seed is revealed. You can copy the Server Seed, Client Seed, and Nonce into any independent SHA-256 calculator to verify that the hash matches the commitment shown before your draw.
The First Open Guarantee
For your very first open of any specific box title, the protocol mathematically pins the minimum pull outcome to Epic tier or higher, providing an immediate demonstration of the platform's high-craft vault holdings.
Step-by-Step Procedure
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