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Can I ask you how do you know the secretSeed is univocal for all the forum users? Is it only your supposition or have you asked someone from the staff?
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Theymos refers to it as a singular entity.
You're not going to find the secret seed technologically. Brute force is not practical, and SHA-1 is strongly believed to protect against other attacks you might think of. If the seed is ever published, it'll be because someone leaked it.