'Panic visible onchain': Bitcoin activity hits 2026 high amid Coldcard attack as K33 flags potential bottoming pattern
Quick TakeBitcoins seven-day active supply climbed to a 2026 high with about 890,000 BTC moved over the past week amid the ongoing Coldcard attack, according to K33.Head of Research Vetle Lunde said periods of such elevated onchain activity have historically coincided with local market tops and bottoms. Bitcoin onchain activity has climbed to its highest level of 2026 as the ongoing Coldcard attack continues to unfold, with K33 arguing that the surge in coin movement during the past week resembles a pattern historically seen around local market tops and bottoms. The research and brokerage firms report comes as the number of attackers and funds stolen from the exploit continues to expand. Galaxy Research said Tuesday that victim reports continue to uncover new theft patterns, with the firm now estimating that at least 15 different attackers have exploited the vulnerability. Galaxy previously estimated Coincard-related losses had exceeded $100 million, rising to about $130 million, or roughly 2,000 BTC, including suspected but unconfirmed thefts. K33 estimates the exploit has so far resulted in about 1,596 BTC being stolen from roughly 7,300 addresses. BTC active supply, past seven days. Image: K33.Panic is visible onchain In the report, K33 Head of Research Vetle Lunde said around 890,000 BTC