Ethereum co-founder Vitalik Buterin said on August 16 that Bitcoin’s developer community deserves credit for pioneering work on Utreexo, a compact-state technology he argued Ethereum’s own scaling research is now drawing on as it looks for ways to keep the network’s data footprint manageable at much higher throughput.
Utreexo, first proposed by Tadge Dryja at the MIT Digital Currency Initiative in 2019, replaces a node’s full record of unspent transaction outputs with a compact cryptographic accumulator alongside per-transaction inclusion proofs. According to Bitcoin Optech’s technical documentation, the accumulator itself can fit in under a kilobyte, letting a node validate transactions fully without storing the entire UTXO set locally — at the cost of nodes needing to transmit and verify small proofs alongside every transaction.
Why Ethereum Is Watching Bitcoin's Approach
The relevance to Ethereum comes down to a scaling constraint neither network can route around indefinitely: Ethereum’s state currently grows by roughly 100 GB a year, and unchecked state growth is one of the core obstacles standing between the network and the kind of 1,000x throughput increases researchers have floated in recent roadmap discussions. Buterin’s team has been examining how a native UTXO-style accounting model, similar in spirit to Utreexo, could cut permanent payment-state storage by as much as 99.8% — turning roughly a billion state entries into something closer to 300 MB.
Pairing State Compression With Proof Aggregation
Buterin has paired this state-compression idea with a separate proposal for a recursive-STARK mempool, under which nodes would periodically combine individual transaction-validity proofs — each roughly 128 kB on its own — into aggregated recursive proofs. The goal is to keep bandwidth requirements from scaling linearly with transaction volume even as the network processes far more activity than it does today, part of the broader set of proposals developers are already weighing for Ethereum's next major network upgrade.
Related: Ethereum’s ETH/BTC Ratio Nears Make-or-Break 0.03 Resistance
An Unusual Cross-Chain Acknowledgment
Public credit from Ethereum’s co-founder to Bitcoin’s developer community is notable given how rarely the two ecosystems’ research tracks are discussed as complementary rather than competing. It also underscores that Ethereum’s path to significantly higher throughput is likely to lean on trade-offs — smaller local state in exchange for more proof-verification work — that Bitcoin’s more conservative, security-first developer culture has been quietly refining for years, rather than novel Ethereum-only cryptography.
