Coldcard’s $89M wallet bug triggers the biggest Bitcoin movement since FTX and completely distorts market signals

An important story is making waves across the blockchain ecosystem. Coldcard’s wallet crisis has shaken Bitcoin sentiment, blurred on-chain signals and exposed a recurring weakness in AI-assisted cyber defenses. On July 30, hardware maker Coinkite warned users that wallets generated with affected Coldcard firmware could be drained because a software error produced seed phrases with far less randomness than intended. This security incident, Galaxy Research said, resulted in three suspected attack waves that targeted 4,585 addresses and drained 1,367.

05 BTC, worth about $89 million. Coldcard Bitcoin Wallet Hack (Source: Galaxy Research) The Bitcoin associated with the three identified waves remains in attacker-controlled addresses, according to Alex Thorn, Galaxy Digital’s head of firmwide research. However, he said smaller opportunistic thefts were already moving through peel chains, cross-chain services and offshore casinos.

Market Dynamics

Coldcard migrations blur Bitcoin’s bearish signals This escalating threat has pushed potentially exposed users to move their Bitcoin before attackers reach it. Although Coinkite has released fixed firmware for affected models, existing affected seed phrases cannot be repaired through an update, leaving holders to generate new wallets and transfer their funds to secure addresses. That migration has produced an unusual surge in activity among smaller holders and long-dormant coins.

CryptoQuant research head Julio Moreno said transactions involving outputs of less than 1 BTC reached 39,600 BTC on July 31. That was the largest daily total for the cohort since November 2022, when 39,900 BTC moved shortly after FTX collapsed. Bitcoin’s daily active addresses also jumped from about 645,000 on July 30 to nearly 1 million the following day, their highest level since Dec.

Bitcoin Daily Active Addresses (Source: CryptoQuant) Moreno said the increase was concentrated among sending addresses, while receiving addresses rose by a much smaller proportion, suggesting holders were moving funds out of existing wallets as a precaution. Exchange deposits involving transfers below 10 BTC climbed to 7,300 BTC, their highest level since Feb. Some holders may have used exchanges as temporary destinations while creating replacement wallets, although the flows could also include investors preparing to sell.

Market Impact

Bitcoin Exchange Deposits Spiked After Coldcard Incident (Source: CryptoQuant) CryptoQuant analyst JA Maartunn added that 77,402 BTC from older unspent-transaction-output bands had moved since the vulnerability became public. However, Maartunn cautioned against treating the resulting movements as evidence of broad investor capitulation, saying the context pointed heavily toward users securing their wallets. He stated: “The Coldcard seed phrase issue may cause old coins to move as users secure their savings.

That can distort LTH Supply Change, Coin Days Destroyed, Spent Output Age Bands and other related charts. ” Meanwhile, broader market sentiment deteriorated sharply amid the heightened network activity. Blockchain analytics firm Santiment said Bitcoin’s ratio of positive to negative commentary fell to its lowest level since its modern social tracking began.

The reading reached 0. 58 bullish comments for every bearish one across X, Reddit, Telegram and other platforms. Bitcoin Market Sentiment Turns Bearish (Source: Santiment) Santiment attributed the unusually severe reaction to the nature of the breach.

Crypto markets are watching this development closely as investors weigh its potential impact on prices.