Compact toolchain 0.36.1

Date: 2026-11-11
Language version: 0.28.0
Compact runtime version: 0.21.0
Environment: This release works with a Midnight ledger 9 blockchain. For the full compatibility matrix, see the release notes overview

High-level summary

Version 0.36.1 of the Compact toolchain is a patch release. It contains fixes for a pair of bugs in toolchain 0.36.0.

These release notes are intended for Compact smart-contract developers and for DApp developers who use the Compact runtime.

The following defects are fixed by updating to Compact toolchain 0.36.1.

Issue #616: Certain circuits that used the JubjubScalar or JubjubPoint types would fail to generate prover and verifier keys due to a crash in the (separate) key-generation binary. This was due to an upstream bug in the ZKIR implementation. The issue is fixed upstream and this release contains a new key-generation binary containing the upstream fix.
Issue #856: Certain circuits that used deserialized Boolean values would trigger an internal compiler error. Toolchain 0.36.0 contained a partial fix for this issue but it was still possible to trigger the error. This issue is now fixed in toolchain 0.36.1.