Provably L1-equivalent execution-layer node that is running against a Unified Binary Tree (EIP-7864). PIR servers, wallets, and light clients can begin consuming binary-based state today ahead of EIP-7864 inclusion in protocol, while relying on equivalence proof for data validity.
Geth-based UBT node syncing mainnet. Most RPCs implemented; eth_call and debug_executionWitness pending. Blocked on inefficient binary-MPT conversion — upstream optimization work ongoing.
Rust EL client path, kicked off late Q1 via Lambdaclass PR. Preferred long-term for its Rust toolchain and zkVM-proving story.
UBT shadow chain fully sync'd to mainnet head, producing MPT-equivalent state roots per block — validates the conversion pipeline under real load.
Implement eth_call and debug_executionWitness parity with MPT-backed Geth so UBT can back a full-featured node.
Recursive zkVM proof chain that UBT state updates match MPT updates per block.
PIR servers and clients lean on provable UBT state — no need to trust the serving node.
| KPI | Target | Status |
|---|---|---|
| Mainnet-sync'd shadow chain | Q2 2026 | Geth + Ethrex paths in flight |
| RPC parity | All RPCs (incl. eth_call, debug_executionWitness) | Blocked by node UBT-readiness |