I went digging into what actually happens if you want out of the Newton $NEWT Keystore system entirely, not just pause an agent but fully revoke and withdraw custody. The pitch is that zkPermissions let users keep blind custody while still letting agents execute within proven boundaries. Good in theory. But every rollup style system has an upgrade key or admin multisig somewhere controlling the proof verification contract, and that’s the piece nobody benchmarks when they’re busy praising the zk architecture. If that multisig can pause settlement or freeze pending intents during an upgrade window, your custody isn’t actually independent of trust assumptions, it’s just trust wearing a verifiable wrapper.
Here’s what I’d want answered before mainnet beta gets taken seriously. What’s the multisig threshold controlling the Keystore’s core contracts, and is there a timelock on upgrades or can changes go live instantly. A real decentralized custody claim needs a forced exit mechanism, something that lets a user pull funds even if the sequencer goes dark or the policy engine stalls. Most early rollups skip this because it’s hard to engineer and harder to market, they’d rather ship the happy path first and patch exit guarantees later. I’ve seen that movie before and it doesn’t end well for users holding funds during the patch window.
My cynical take, and I mean this respectfully. The TEE plus ZK combo for policy enforcement is legitimately clever engineering, I’m not dismissing the technical effort here. But clever engineering doesn’t matter if there’s a single point of failure sitting upstream of it that can freeze everything during exactly the moment users need an exit most. I want to see the forced withdrawal mechanism documented plainly, not buried in a whitepaper appendix. Until then I’m treating the custody claim as aspirational, not proven.