Coldcard2026-08-13 21:39:51New Research Details How Coldcard Attackers Prioritized Rich WalletsAccording to Bitcoin News, new research by @PraveenPerera details how Coldcard attackers operated: they first identified vulnerable addresses, then sorted them by bitcoin holdings and began transferring funds from the highest-balance addresses. The tool used was rough — in one address with 225 spendable UTXOs, it pulled exactly the 200 newest records, matching a blockchain API's default 200-record limit and suggesting the attacker may not have loaded the next page. The software also spent a 294-satoshi UTXO, increasing transaction fees by around 2,040 satoshis. The researchers conclude the builder understood balance systems better than Bitcoin's UTXO model. Despite the attacker seemingly obtaining full seeds, at least 75 BTC remain in other addresses derived from those seeds; 132.95 BTC still sit in 153 stolen addresses, and the seeds cannot be reproduced, leaving open the possibility of undisclosed private device data.1600
blockchain AP2026-07-22 17:15:14IBTimes Ranks Changelly No. 1 Among Blockchain API Providers for 2025IBTimes published its 2025 blockchain API provider ranking, placing Changelly first. The list also includes SimpleSwap, ChangeNOW, OnRamper, Coinbase Commerce, OKX, and Cryptopocket.1560
