zkSync's 'Prividium' Bank Stack
zkSync’s Prividium is pitching a permissioned ZK 'Bank Stack' for institutions that pairs private execution with Ethereum‑anchored proofs and Elastic Network interoperability, aiming to preserve privacy without isolating liquidity noted in recent social coverage. The approach positions ZK rollups as a bridge for regulated players seeking private settlements on Ethereum security.
ZKsync and Phylax launched) a packaged "Bank Stack" that pairs Prividium as the private execution layer with Phylax’s deterministic risk-controls to enable privately issued deposits, stablecoins and RWA on an Ethereum‑anchored architecture. One live Prividium instance is already reported as being operated by Memento for Deutsche Bank under an institutional pilot, a setup discussed in the L2 Interop Working Group notes and Memento’s project materials showing) deployment and testing timelines. Fireblocks and other custody/ops vendors are being integrated into the stack to let banks reuse existing policy and custody flows, a capability highlighted in coverage of the rollout and partner write‑ups noting) enterprise integrations. Matter Labs’ roadmaps and Q3 2025 deliverables documented) selective‑disclosure and permissioning releases plus prover upgrades (Airbender, June 24, 2025) designed to cut end‑to‑end settlement latency between private chains and Ethereum finality. Phylax, the risk‑control partner in the Bank Stack, raised) roughly $4.5M in seed funding (Nov. 1, 2024), while market commentary tracked token‑price reaction to ZKsync’s institutional push—reports show) the ZK token slid about 34% in a 30‑day window during rollout chatter.
