Vitalik Points to Bitcoin’s Utreexo as Ethereum Proposes Hybrid UTXO–Account Scaling Plan

The endorsement signals a research shift toward mixing lightweight UTXO-like payments with account-based contracts to cut node storage and enable much higher transaction capacity.

Overview

Vitalik Buterin publicly credited Bitcoin developers for Utreexo and described on Aug. 16 a ‘current proposed’ Ethereum strategy that would combine UTXO-style objects with traditional accounts rather than replace them.
A July 6 Ethereum Research proposal from Toni Wahrstätter lays out native UTXOs for one-shot payments and estimates they could shrink permanent payment state by about 99.8%, reducing a billion-entry payment dataset to roughly 300 MB in design estimates.
The Utreexo idea uses a compact accumulator plus inclusion proofs so nodes need not store every unspent output locally and Ethereum researchers say similar accumulator proofs could let nodes verify payments with far less stored data.
Buterin’s recursive-STARK mempool research would bundle many transaction-validity proofs into a single recursive proof to cap propagation costs and under example assumptions it would add roughly 2 MB per second of steady bandwidth per node.
These designs remain experimental and dependent on standards work—native UTXOs assume EIP-8141 Frame Transactions which is only “Considered for Inclusion” in the Hegotá roadmap—so the next steps are specification review, EIP discussion, and further performance validation before any mainnet change.