1. Client Seed

A randomly generated client seed is assigned to a user, which the user may modify to their liking using the form in this page (if the user is logged in).

2. Server Seed

Server generates a hidden server seed and a hashed version of it is made available to the user in this page (if the user is logged in). The plaintext version of this hash is made available to the user after they have opened a Gachapon.

3. Nonce

Each Gachapon opened with us is assigned a unique identifier, which is appended to the client-seed during the provably fair draw.

4. Provably Fair Algorithm

The provably fair algorithm takes in the client-seed (that appends the Nonce) and the server-seed to generate a resulting number ranging from 0 to 10,000. Each prize for a gachapon describes the prize number range, and the final prize is purely based on the resulting number falling within that range.

5. Verify

You may obtain the client seed, server seed and the nonce from the winnings page for each gachapon that you unbox and use the tool provided to you on this page if you are logged in to verify the resulting number that determined the prize. A provably fair system will always give you the same exact output for a given set of client-seed and server-seed combination.