Matter Labs, the developer of ZKsync, has open-sourced Prividium's permissioning engine, allowing financial institutions to run, inspect and modify a permissioned chain within their own environments without a commercial agreement. Deutsche Bundesbank is testing and deploying the engine on its infrastructure as the first institution to do so. Prividium keeps smart contract and token data inside the operator's environment while zero-knowledge proofs verify correctness. Matter Labs said regulated institutions had sought an alternative to dependence on a single commercial infrastructure vendor. The company previously open-sourced several other Prividium components, while administration tools and integrations remain commercial. The move does not alter the role of the ZK token. Separately, the Eurosystem is developing Pontes to connect market DLT platforms with TARGET payment services, with an initial launch planned for the third quarter of 2026.