Bitcoin Core Guix Attestation Guide

A practical guide to independently reproducing Bitcoin Core release binaries and submitting attestations to bitcoin-core/guix.sigs. Written from the experience of attesting v31.0 on Fedora Linux 43. What is Guix Attestation?** Bitcoin Core uses Guix — a reproducible build system — to produce release binaries. Multiple independent builders compile Bitcoin Core from the same source tag and compare their SHA256 hashes. If hashes match across builders, it proves the official release binaries weren't