Within 25 minutes, 594 BTC were transferred from 500 single-signature addresses, with a total value of approximately $38 million.

According to Odaily, Bitcoin News monitoring reported that on Thursday, approximately 594 BTC were transferred from 500 addresses within 25 minutes, valued at around $38 million. The funds were subsequently consolidated into another wallet. The affected holdings all used single-signature addresses with balances ranging from about 0.15 to 0.26 BTC, and many UTXOs had remained dormant for years. Early speculation focused on Coldcard, as at least one victim used this device. Coldcard CEO NVK denied any device-wide vulnerability, stating that the user may have imported a seed that was previously leaked or compromised, and pointed out that the transfers involved keys from different wallets. Jameson Lopp stated that another victim only lost part of their UTXO, not the entire wallet balance, which may indicate that only individual private keys were exposed rather than a complete seed leak. The coordinated transfers are confirmed, but the source remains unknown. There is currently no evidence of a Coldcard RNG flaw, supply chain vulnerability, or a Bitcoin cryptographic failure.