Bitcoin ETF Inflows Surge Amid Self-Custody Concerns

US spot Bitcoin exchange-traded funds (ETFs) have seen significant inflows over the past week, totaling around $620 million. This surge in demand coincides with a recent hack of Coldcard wallets, which drained more than $116 million worth of Bitcoin from over 5,200 wallet addresses.

Bloomberg senior ETF analyst Eric Balchunas noted that while there's no clear link between the two events, some investors may be reconsidering self-custody due to operational risks. He stated, 'I'm not saying it's connected, we just don't know.' However, he also suggested that in the long term, some users might migrate over to ETFs.

The Coldcard hack has renewed concerns about the security of self-custody, particularly with firmware flaws and software vulnerabilities. This debate is ongoing, with Binance co-founder Changpeng 'CZ' Zhao arguing that storing crypto on centralized exchanges may now be 'statistically safer' than self-custody.

CZ cited data from analyst Willy Woo, which showed that cumulative Bitcoin losses from self-custody incidents have surpassed those from exchange hacks. He also noted that AI-assisted cyberattacks are becoming increasingly sophisticated, with Bitcoin swap service Boltz suspending its non-custodial bridge due to a rise in such exploits.