A report from research firm River found that bitcoins lost due to poor self-storage exceeded the amount lost on exchanges. Cryptocurrency investors lost about 1.6 million bitcoins due to improper storage, which is currently valued at more than $1.5 billion. That's more than the 1.2 million BTC (about $1.1 billion) that customers lost after the Mt.Gox hack and FTX bankruptcy. In their study, River analysts examined data from inactive wallets, excluding wallets linked to Satoshi Nakamoto. According to experts, most of the lost coins are stored in crypto wallets that have not been used for more than ten years.