Logbook June 2026

Logbook — June 2026

Week of Jun 8 — The unsigned Shelley builder migration landed, closing the last major cardano-api removal item from this sprint. A docker CI boot-sync race was fixed alongside. The wallet's internal transaction construction is now substantially on the ledger builder path.

Tuesday 9th

Unsigned Shelley builder merged + CI fix (PV)

Issue: #5290

• Merged cardano-api removal: migrate unsigned Shelley tx builder #5292 — closed #5290
• Merged fix(ci): clean docker boot sync after cancellation #5296

Week of Jun 22 — Security hardening week: recovery phrases and session keys now draw entropy from the system CSPRNG instead of a deterministic seed, and Byron RndState was hardened the same way with the generator redacted from serialized state. CI was migrated to the nix-enabled ARC runner fleet in the same push.

Tuesday 23rd

Version bump + CSPRNG recovery phrase (PV)

• Merged chore(release): merge back v2026-05-11 version bump #5299
• Merged Generate suggested recovery phrase with the system CSPRNG #5298

Thursday 25th

CSPRNG hardening + NixOS runners (PV)

Issue: #5304

• Merged Generate session keys with the system CSPRNG #5306
• Opened ci: run linux CI on nix-enabled-runners #5305
• Opened Harden Byron RndState: seed from the system CSPRNG and redact the generator #5307

Friday 26th

NixOS runners + Byron CSPRNG hardening (PV)

• Merged ci: run linux CI on nix-enabled-runners #5305
• Merged Harden Byron RndState: seed from the system CSPRNG and redact the generator #5307