Advisory: refund race condition in adaptor-signature swaps; 0.66 BTC reported lost
The public event log of the directory kycnot.me recorded that on 14 July 2026 the BasicSwap team published an advisory asking users to halt trading over a race condition in the automatic refund path of adaptor-signature swaps. A counterparty running a modified client could take swap funds before a refund was broadcast. The team reported a total loss of 0.66 BTC, about $42,000, and released version 0.17.2 with a fix. Ordinary completed swaps were not affected.
This entry summarises a public report and links to it. It is a record of what was reported, not a finding of wrongdoing. If you represent BasicSwap, you can
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