Ethereum co-founder Vitalik Buterin says that while layer 2 protocols focus on “scalability,” layer 3 protocols will serve a completely different purpose.

While Ethereum-based Layer 2 solutions focus on network hyperscaling, Ethereum co-founder Vitalik Buterin believes that Layer 3 will serve a very different purpose – to provide “custom functionality.”

Buterin shared his thoughts in a Saturday post, providing three “visions” of what Layer 3 will be used for in the future.

The co-founder of Ethereum said that the third layer in the blockchain only makes sense if it provides a function other than layer 2, which is used to improve scaling with zero-knowledge (zk) aggregation technology:

“Three-layer scaling architecture consisting of combining the same scaling scheme on its own usually does not work properly. It definitely doesn’t use aggregations on top of aggregations when two levels of aggregation use the same technology.”
But, according to Buterin, “a three-tier architecture, in which the second and third layers have different purposes, could work.”

One use case for layer 3 would be what Buterin describes as “custom functionality” – referring to privacy-based applications that use zk proofs to send privacy-preserving transactions to layer 2.

Another use case could be “custom scaling” for custom applications that don’t want to use the Ethereum Virtual Machine (EVM) to perform computations.

Buterin also said layer 3 could be used for “weak trust” scaling with zk-proof Validiums technology. Buterin said this could be useful for “enterprise blockchain” applications using “a central server that runs the validation and hashes it on-chain on a regular basis.”

Buterin added that it is still unclear whether Tier 3 structures will be more efficient than the current Tier 2 model when it comes to building custom applications on Ethereum.

Layer 2 and layer 3 network architecture. Source: StarkWar.
Related: Beginner’s Guide to Understanding the Layers of Blockchain Technology

“One possible argument for a 3-tier model over a 2-tier model is that the 3-tier model allows an entire sub-ecosystem to exist within a single aggregation, which allows cross-domain transactions within that ecosystem to occur in very short timeframes. cheap expensive level 1 “Without having to pass,” Buterin said.

Buterin said building a layer 3 may not improve the efficiency of the network, as cross-chain transactions can be easily and inexpensively carried out between two layer 2s connected to the same chain.

Buterin’s comments on possible use cases for Layer 3 come as StarkWare’s newly generated evidence for recursive validation is likely to put an end to Ethereum’s scalability issues.

Declan Fox, product manager at Ethereum software company ConsenSys, recently told Cointelegraph that “with iterative reviews and proofs, we could theoretically scale indefinitely.”

This recursive proof has been well tested in production: StarkWare co-founder Elie-Ben Sasson recently told Cointelegraph that his own recursive proofs minted up to 600,000 non-reversible tokens on Immutable X in a single transaction, with a probability of 60 million transactions. soon. Be on maps “with a lot of engineering and customization”.

Source: CoinTelegraph