The Zero Option Is Possible: Trustless Ethereum on a Phone, Without RPC
2026-11-04 –, Lotus Stage 1

Almost every mobile Ethereum user depends on a third-party RPC provider that sees every query and decides every answer. This talk shows how a light client embedded in an Android app removes that intermediary today, fetching data over p2p and verifying it on-device, and where the approach still falls short: log queries and access to historical data.


The EF Mandate requires a "zero option": wherever an intermediary-free path is possible, it must be built. For chain access, that path now exists. Myotis is an open-source light client for Android, iOS and desktop, as standalone app or embedded SDK: BLS sync-committee verification anchors beacon headers, state is fetched from peers over devp2p/SNAP and checked with Merkle-Patricia proofs. No RPC provider in the loop.

The talk covers the following, with a live demo if connectivity allows:

  • Living inside the weak-subjectivity window on a phone that sleeps
  • Which trust assumptions remain (checkpoint, bootnodes, peer availability) and how to shrink them
  • What doesn't work yet: log queries (log index bundling) and historical data access
  • Truly permissionless: apps built on Myotis need no API keys, accounts or rate-limit deals

Users leave knowing how to install Myotis and point their wallet at it instead of their usual RPC provider; developers, how to drop RPC from their app.

Dirk is a Berlin-based Android developer who has been building apps since 2009 and following Ethereum since 2015. From 2020 to 2023 he was a mobile developer at Gnosis and Safe, working on the Safe{Wallet} mobile apps. He is the creator and maintainer of Myotis, an open-source light client that gives mobile and desktop apps trustless access to Ethereum without relying on RPC providers.