The Coldcard hack, a self-custody wallet breach, has seen various estimates of stolen Bitcoin. Investigators use victim reports and on-chain analysis to trace funds, making it challenging to determine
In August 2026, investigators are grappling with the aftermath of the Coldcard hack, a significant security incident affecting self-custody wallets. The precise amount of stolen Bitcoin remains uncertain due to varying estimates and limited victim reports.
Blockchain analytics platforms like CryptoQuant have confirmed losses at around 1,432 BTC, while others such as Galaxy Research and TRM Labs trace higher amounts, estimating between 1,700 and 1,800 BTC. This discrepancy highlights the difficulty in quantifying self-custody attacks.
Galaxy’s Alex Thorn emphasized that their estimates are based on both direct victim reports and broader attack patterns identified through blockchain analysis. As of Tuesday, they reported a high-confidence minimum of 1,730 BTC, though this figure could increase as more victims come forward.
TRM Labs further analyzed the hack, tracing funds from over 5,200 addresses in four waves, suggesting that attackers drained significant amounts. TRM’s Ari Redbord warned investigators to expect ongoing adjustments to loss estimates before stabilization.
CryptoQuant takes a cautious approach, starting with public victim reports and cross-referencing them against on-chain patterns. This method results in their confirmed tally of 1,432 BTC but acknowledges the potential for increased estimates as more disclosures are made.
The lack of a complete list of affected accounts complicates efforts to quantify losses accurately. Investigators rely heavily on partial victim reports and broader blockchain analysis, leading to ongoing adjustments in loss figures.
This incident underscores the challenges faced by self-custody wallets and highlights the need for robust security measures among users. Traders should monitor developments closely as more information emerges from investigations.
Source: Cointelegraph. Summarized and rewritten by the Vexoda Newsroom. This is market news, not financial advice.