Binance's 90 percent — What Mt. Gox taught us about exchange promises

Binance says it has replenished 90 percent of the $6. 3 billion its customers lost to hackers, and that the remaining 10 percent — locked in illiquid tokens — will follow. What matters is not the speed of the announcement but whether users can withdraw those funds in 2025.

This is the lesson Mt. Gox's creditors learned the hard way. When the Tokyo exchange lost 850,000 Bitcoin to theft in 2014, leadership made immediate statements about the company's solvency and its capacity to make customers whole. What actually unfolded was a seven-year holding pattern before the first creditor received a single Bitcoin back, followed by a process so slow that some claims remained unsettled more than a decade after the theft.

The speed of restitution claims made by crypto exchanges in the hours after a hack tells you almost nothing. What it reveals instead is whether the company is performing confidence or holding reserves. Binance's statement. 90 percent down, 10 percent pending. Is structured exactly like Mt. Gox's early promises: a number meant to calm customers and regulators, anchored to assets in a less accessible form. The company is covering the theft directly, which is not nothing. But coverage and proof of solvency are different things.

The real test arrives when customers try to withdraw. If the 10 percent in illiquid tokens never materializes, or arrives on some stretched timeline measured in years, the 90 percent number retroactively becomes a partial truth that was shaped for the moment of maximum damage control. If it all arrives as promised, Binance will have done something Mt. Gox could not.

For anyone with assets on an exchange, the lesson is brutal: the statement made on the day of the hack is marketing, not fact. The only fact is what shows up in your wallet. Until Binance users can withdraw every token they owned on the day of the theft, the 90 percent is a claim waiting to be either proved or disproved by time.