Diminishing returns, eh? Maybe time to consult a block explorer or oracle for clues. Good luck, sat hunter!

Ok the big is gone. After each round, wallet announces if ecash has been found - for longer wallet histories, there is spent ecash first, that is filtered out. How far it goes until unspent is found depends on the history of the wallet being recovered. If nothing is found for 3-4 intervals it is saf...