It's a ponzi scheme, and the math fails after 12 months:

After the first 12 months there is a shortage of money to cover the buywall which increases each year due to the float of DUBI increasing each year when you lock it in. All of his "mathematical calculations" failed to take into account the increase in DUBI supply each year.

Level 901, PRPS is at $1000. Total money collected for buywall: $90 million
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Total DUBI in circulation at that time: 58,800

Money needed for buywall: $59 million

Money in buywall: $90 million

Surplus: $21 million
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Total DUBI in circulation after 12 months: 117,600

Money needed for buywall: $117 million

Money in buywall: $90 million

Shortage: $27 million
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Total DUBI in circulation after 24 months: 176,400

Money needed for buywall: $176 million

Money in buywall: $90 million

Shortage: $86 million
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Total DUBI in circulation after 36 months: 235,200

Money needed for buywall: $235 million

Money in buywall: $90 million

Shortage: $145 million
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Total DUBI in circulation after 48 months: 294,000

Money needed for buywall: $294 million

Money in buywall: $90 million

Shortage: $204 million
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Total DUBI in circulation after 60 months: 352,800

Money needed for buywall: $352 million

Money in buywall: $90 million

Shortage: $262 million
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Its a ponzi scheme that gets further and further in the pit each year as DUBI supply increases.