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Coldcard
2026-08-23 07:09:08

Coldcard theft reignites debate over open source, source-available code, and Bitcoin security

The theft tied to the Coldcard hardware wallet has revived a long-running argument in the crypto sector: publishing code is not the same as delivering open-source security. In the article translated by Foresight News from Juan Galt, the incident is used to draw a sharp line between free and open-source software, source-available licensing, and the economic incentives that determine whether anyone actually audits code. The piece says users lost more than $100 million in bitcoin, or over 1,500 BTC, and argues that the event exposed a widespread misunderstanding inside the Bitcoin community itself. It walks through the Free Software Foundation’s four freedoms and the Open Source Initiative’s standards, then points out that Coldcard’s firmware includes license restrictions that bar certain commercial use. That means, by the article’s framing, it should not be described as open source in the formal sense. The report also contrasts that structure with Bitcoin Core’s public development model, where code review, open discussion, and long review histories shape decision-making. It argues that open source creates the possibility of verification, but not verification itself. The final section focuses on AI, saying new models are making large-scale code review possible while also increasing pressure on maintainers and eroding the old security advantage of closed-source software.

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Coldcard theft reignites debate over open source, source-available code, and Bitcoin security
Bitcoin
2026-08-20 20:49:28

Coldcard breach reignites debate over open source, source-available software in Bitcoin

A new analysis from Bitcoin Magazine argues that the Coldcard hardware wallet incident exposed a core misconception in Bitcoin software: publicly readable code is not the same thing as open-source software. The article says users lost more than $100 million in bitcoin, over 1,500 BTC, after a critical entropy flaw in Coldcard firmware went unnoticed for roughly five years. That flaw, it argues, showed how software safety depends less on source visibility alone and more on who has the legal and economic incentive to review code closely. The piece draws a sharp distinction between Free and Open Source Software standards and “source-available” licensing. It notes that Coldcard firmware was released under MIT terms plus the Commons Clause, which removes the right to sell the software commercially. Because of that restriction, the article says the software does not meet the Open Source Initiative standard. It contrasts that model with Bitcoin Core, whose MIT-licensed code, public review process, contributor structure, nonprofit funding base, and long-running public discussions are presented as a large-scale example of open-source development working as intended. The article also says AI is changing the security equation on both sides. It cites the volunteer Bitcoin Red Team, backed by OpenSats, which used frontier AI models to scan hundreds of Bitcoin repositories and reported thousands of findings, including dozens rated critical or high severity. At the same time, it argues that AI-generated code is adding strain to maintainers and weakening the old security advantage once associated with closed-source software.

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Coldcard breach reignites debate over open source, source-available software in Bitcoin