Coldcard fallout shows up onchain as 210,000 bitcoin leaves old wallets
Reported by CoinDesk · AI-assisted summary by ChikoCorp AI News Desk
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Summary
The fallout from a security breach in Coldcard wallets has triggered the movement of about 210,000 bitcoins from long-term holder wallets, according to Glassnode data. This decline in long-term holder supply, from nearly 15 million to approximately 14.7 million BTC, reflects users transferring their bitcoin to new wallets or regulated custody services rather than selling. The Coldcard breach involved weak randomness in firmware that allowed attackers to reconstruct wallet recovery phrases, leading to losses estimated as high as $114 million.
Why it matters
The movement of bitcoin from long-term holders is notable because such holders are typically seen as the market’s "smart money" who hold through volatility. Unlike previous large shifts which coincided with market tops, this transfer occurred near a market low, indicating a custody migration rather than profit-taking or panic selling. This shift could influence market dynamics by increasing the adoption of regulated custodians and spot bitcoin ETFs, as seen with $754 million inflows to U.S. spot bitcoin ETFs over the last week.
Key context
Long-term holders are defined by Glassnode as entities holding coins dormant for about 155 days or more. Past significant movements of bitcoin by these holders have typically aligned with market peaks. The Coldcard breach exposed vulnerabilities in the firmware's randomness, compromising recovery phrases and causing substantial thefts. Coldcard advised affected users to create new wallets, as firmware updates alone could not secure already compromised keys.
Key numbers and entities
Approximately 210,000 BTC have left long-term holder wallets. Long-term holder supply fell from just under 15 million BTC to roughly 14.7 million BTC. Estimated losses from the Coldcard breach are as high as $114 million. Bitcoin price at the time was around $64,000, about 50% below its October all-time high. U.S. spot bitcoin ETFs received about $754 million in inflows last week, primarily driven by BlackRock’s iShares Bitcoin Trust (IBIT).
What remains unclear
The source does not flag open questions but notes that on-chain movement does not necessarily mean selling. It remains uncertain exactly how much of the moved bitcoin was transferred to new self-custodied wallets versus regulated custody or ETFs, and the long-term effects of this custodial migration are not detailed.