This slogan (perhaps coined by Bitcoin evangelist Andreas Antonopoulos) has been popular among the Bitcoin community for some time. “Keys” here refer to the private keys, implying that those who are in possession of the private keys own the bitcoins controlled by those keys. While this slogan was true in the early days of Bitcoin, …
Bitcoin, year 12. Alice: This year sucks. You know what’s almost as bad as 2020? Bob: Yeah? Alice: Multisig is still scary. Nunchuk: Hold my beer. It’s somewhat ironic that for a technology that reveres decentralization as its central operating principle, Bitcoin still heavily relies on single point of failure as the dominant method …
Today Shift Crypto and Nunchuk jointly disclosed a vulnerability affecting multisig wallet setups that use Coldcard. However, this vulnerability has implications for all current wallet vendors and multisig solution providers. For details, please check out Shift Crypto’s blog. The quick summary is that prior to Coldcard firmware version 3.2.1 (released on Jan 8th, 2021), you can fool a Coldcard into accepting …
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