LOTERIE.CM - Provably Fair Gaming:
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Winners selected using the open source and provably fair - cryptographically secure pseudo-random number generator
http://www.php.net/manual/en/funct
A cryptographically secure pseudo-random number generator (CSPRNG) or cryptographic pseudo-random number generator (CPRNG)[1] is a pseudo-random number generator (PRNG) with properties that make it suitable for use in cryptography