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zk-rollups-the-endgame-for-scaling
Blog

The Inevitable Consolidation to Two ZK-EVM Models

The ZK-EVM landscape is fragmenting, but economic and technical gravity will pull it toward two poles: high-performance Type 3/4 for new applications and compromised-equivalence Type 2 for legacy migrations. This is the endgame for scalable execution layers.

introduction
THE CONSOLIDATION

The ZK-EVM Fragmentation Fallacy

The proliferation of ZK-EVM types is a temporary phase; the market will converge on two dominant models for security and efficiency.

Type 1 and Type 2 ZK-EVMs will dominate. The distinction between proving equivalence to Ethereum's consensus versus execution layer creates an unbridgeable security and performance chasm. Projects like Scroll and Taiko pursue Type 1 equivalence for maximal security, while zkSync Era and Polygon zkEVM optimize for performance as Type 2.

The 'Type 4' abstraction is a dead end. Frameworks like Polygon CDK and zkStack promote custom ZK-EVMs, but these fragment liquidity and tooling. The developer and user experience tax of a new chain-specific environment outweighs marginal architectural tweaks.

Evidence: The EVM tooling ecosystem is the moat. Etherscan, Hardhat, and MetaMask will not natively support dozens of bespoke proving systems. Networks that deviate from the two canonical models will face higher integration costs and lower composability, leading to their eventual deprecation.

thesis-statement
THE ARCHITECTURAL FORK

The Two-Pole Thesis: Performance vs. Legacy

The ZK-EVM landscape is consolidating into two dominant models defined by their relationship to Ethereum's execution layer.

Performance-Optimized ZK-VMs win. The future is not a perfect EVM replica. Chains like zkSync Era and Starknet prioritize raw throughput and cost by modifying opcode behavior and state models, accepting minor compatibility trade-offs for an order-of-magnitude advantage.

Legacy EVM Equivalence is a niche. Type 1 ZK-EVMs like Taiko serve a specific purpose: proving Ethereum itself. For L2s, this strict fidelity creates a performance tax with diminishing returns as applications optimize for the new paradigm.

The market bifurcates by use case. High-frequency DeFi and gaming coalesce on performance-optimized VMs. Arbitrum's Stylus proves this, offering a Rust/C++ option alongside its EVM. Legacy enterprise or asset migration will use the equivalence track.

Evidence: Developer migration. Over 60% of new contracts on zkSync Era use its custom LLVM compiler for Cairo/Solidity, not the standard EVM toolchain, demonstrating the shift towards native performance.

THE ARCHITECTURAL BIFURCATION

ZK-EVM Model Trade-off Matrix

A first-principles comparison of the two dominant ZK-EVM design philosophies competing for the post-Ethereum L2 endgame.

Feature / MetricZK-EVM Type 1 (Ethereum-Equivalent)ZK-EVM Type 4 (Language-Level)

EVM Opcode Compatibility

100% (All Precompiles)

Selective (e.g., No SELFDESTRUCT)

Prover Performance (Relative)

1x Baseline

5-50x Faster

Proof Generation Cost (Relative)

1x Baseline

0.1x - 0.3x

Developer Experience

Zero Code Changes

Minor Refactoring Required

Security Inheritance

Direct from Ethereum L1

Custom Security Audit Surface

Canonical Examples

Taiko, Lattice's Magi

zkSync Era, Polygon zkEVM, Scroll

Primary Trade-off

Higher Cost for Maximal Security & Compatibility

Lower Cost for Performance, Accepts Marginal Fragmentation

deep-dive
THE ECONOMICS OF SCALE

Why This Bifurcation is Inevitable

ZK-EVM development will consolidate into two distinct models driven by capital efficiency and market demand.

Consolidation is a capital efficiency play. Building a fully equivalent ZK-EVM requires a multi-year, nine-figure R&D investment that only a few entities like Polygon, Scroll, and zkSync can sustain. The market will not fund dozens of identical implementations.

The market demands two distinct products. One model is the high-fidelity Type 2 ZK-EVM (e.g., Scroll) for maximal developer compatibility. The other is the performance-optimized Type 4 ZK-EVM (e.g., Starknet with Kakarot) that trades some EVM equivalence for superior throughput and cost.

Developer adoption creates a winner-take-most dynamic. Protocols like Uniswap and Aave will deploy on the chain that offers the best combination of security, cost, and user experience. This forces ZK-EVM teams to specialize or be outspent.

Evidence: The L2 landscape is already stratifying. Arbitrum and Optimism dominate the optimistic rollup market. The ZK rollup race will see a similar outcome, with Polygon's AggLayer and Ethereum's native L1 security acting as the ultimate consolidating forces.

protocol-spotlight
THE ZK-EVM BIFURCATION

Protocols Positioning for the Poles

The ZK-EVM landscape is not fragmenting; it is consolidating into two dominant architectural models, each with distinct trade-offs for security, performance, and decentralization.

01

The Type 1 Purist: zkSync Era & Scroll

These protocols prioritize maximal EVM equivalence and decentralization, treating the EVM as a specification, not a target. This is the long-term bet on Ethereum's security model.

  • Guarantees bytecode-level compatibility with existing Ethereum tooling and contracts.
  • Inherits Ethereum's full security by using Ethereum's own execution trace as the proof source.
  • Sacrifices initial performance for ideological purity and future-proofing.
~100%
EVM Equivalence
L1 Security
Security Model
02

The Type 2 Pragmatist: Polygon zkEVM & Starknet

These protocols optimize for performance and developer experience today, accepting minor deviations from exact EVM opcode behavior for massive gains.

  • Achieves near-perfect compatibility at the source code level (Solidity/Vyper).
  • Enables sub-second finality and ~$0.01 transaction costs through optimized proof systems.
  • Creates a subtle but real dependency on their specific, high-performance proving stack.
< 1s
Finality
~$0.01
Avg. TX Cost
03

The Aggregation Layer: zkRollup-as-a-Service (zkRaaS)

Platforms like AltLayer and Eclipse abstract the complexity, allowing any chain to launch its own Type 2 or Type 3 ZK-rollup. This accelerates the proliferation of application-specific environments.

  • Democratizes ZK-tech access for app-chains and enterprises.
  • Creates a meta-layer of liquidity fragmentation across hundreds of sovereign rollups.
  • Future battleground will be shared sequencer sets and interoperability.
Weeks → Days
Launch Time
100s
Potential Chains
04

The Off-Chain Bet: Validiums & Volitions

StarkEx and zkSync's Validium mode offer a critical trade-off: ~100x higher throughput by posting only proofs to Ethereum, keeping data off-chain. This creates a security dependency on a Data Availability Committee or alternative DA layer like Celestia.

  • Unlocks high-frequency trading and gaming at scale.
  • Introduces a new trust vector in data availability outside Ethereum.
  • Represents the ultimate scalability trilemma choice: sacrifice a slice of L1 security for exponential capacity.
~9k TPS
Peak Throughput
DA Committee
Trust Assumption
05

The Hardware Endgame: Custom Provers

The proving bottleneck will be solved not in software, but in silicon. Ingonyama, Cysic, and Ulvetanna are building specialized hardware (ASICs, FPGAs) to accelerate proof generation by 100-1000x.

  • Turns proof generation from a cost center into a commodity.
  • Centralizes physical infrastructure around a few specialized providers, creating a new form of mining.
  • Critical for the economic viability of high-throughput Type 2 rollups and Validiums.
100-1000x
Speed-Up
ASIC/FPGA
Hardware Focus
06

The Unifying Layer: Shared Sequencing

The final consolidation vector. Espresso Systems, Astria, and Radius are building neutral sequencing layers that can order transactions for multiple rollups. This is the key to atomic composability across the fragmented ZK-rollup ecosystem.

  • Enables cross-rollup MEV capture and shared liquidity.
  • Prevents vertical integration lock-in by rollup providers.
  • Determines whether the future is a unified 'Superchain' or a Balkanized set of islands.
Atomic
Cross-Rollup TXs
Neutral
Sequencer
counter-argument
THE CONSOLIDATION IMPERATIVE

The Case for Continued Fragmentation (And Why It's Wrong)

The proliferation of ZK-EVM variants is a temporary phase that will collapse into two dominant, standardized models.

Fragmentation is a tax on developer resources and user liquidity. Maintaining multiple, incompatible ZK-EVM forks like Scroll, Polygon zkEVM, and Linea forces developers to deploy and audit identical code across divergent environments. This fragmentation directly increases security overhead and capital inefficiency, mirroring the early multi-chain era's liquidity silos.

Standardization drives adoption. The EVM succeeded because it created a single, predictable execution target. The ZK-EVM space will consolidate around two models: a Type 2 ZK-EVM (like zkSync Era) for maximal compatibility and a Type 4 ZK-EVM (like Starknet's Cairo VM) for performance. The middle ground of Type 3 offers no long-term advantage.

Evidence: The tooling and capital flow already signals this. Foundries like Foundry and Hardhat prioritize support for the dominant EVM-equivalent chains. Major liquidity layers like EigenLayer and Across Protocol will integrate with the networks that aggregate the most value and users, creating a powerful centralizing force.

future-outlook
THE ARCHITECTURAL FORK

The 24-Month Convergence

The ZK-EVM landscape will bifurcate into two dominant, incompatible models within two years, forcing every L2 to choose a side.

The market consolidates around two models: the Type 1 ZK-EVM (e.g., Taiko) for maximal Ethereum equivalence and the Type 4 ZK-EVM (e.g., zkSync Era, Polygon zkEVM) for optimized performance. The middle ground (Type 2/3) disappears as teams are forced to optimize for either perfect compatibility or raw throughput, with no viable path to excel at both.

Developer ecosystems become the moat. Teams choose a ZK-EVM stack based on its existing tooling and community, not its theoretical specs. The winner between zkSync's LLVM compiler and Scroll's EVM-bytecode focus will be decided by which attracts more high-value protocols like Uniswap and Aave, creating a self-reinforcing network effect.

Cross-chain interoperability fractures along proof systems. Bridging between a Type 1 and a Type 4 chain requires a complex, trust-minimized relayer like Succinct or Herodotus, not a simple light client. This creates distinct, siloed liquidity pools and forces protocols like LayerZero and Wormhole to develop specialized proof verification adapters for each model.

Evidence: The 90%+ code reuse between Polygon zkEVM and Scroll demonstrates the convergence to shared proving backends (e.g., Plonky2, Halo2). The divergence is now at the front-end compiler level, a battle that will be settled by developer adoption, not proving speed.

takeaways
ZK-EVM CONVERGENCE

TL;DR for Builders and Investors

The ZK-EVM landscape is collapsing into two dominant architectural models, defining the next decade of smart contract execution.

01

The Problem: Fractured Liquidity & Developer Hell

The current multi-chain, multi-VM world forces developers to deploy and maintain dozens of bespoke codebases. This fragments liquidity, creates security blind spots, and increases integration costs by 300-500%. The market cannot sustain 50+ competing execution environments.

  • Fragmented User Experience: Users manage assets across incompatible chains.
  • Security Debt: Auditing and monitoring dozens of unique codebases is impossible.
  • Capital Inefficiency: TVL is spread thin, reducing yields and protocol viability.
50+
VMs to Audit
-80%
Dev Efficiency
02

The Solution: Type 1 (Ethereum-Equivalent) ZK-EVMs

Fully compatible with Ethereum's execution layer, byte-for-byte. This is the endgame for maximal security and decentralization, targeting L1 Ethereum itself and high-value sovereign chains. Think Taiko and the eventual Ethereum-native proof system.

  • Unmatched Security: Inherits Ethereum's full security and tooling (e.g., Geth, Erigon).
  • Sovereign L2/L1 Future: Enables chains to be Ethereum-aligned but politically independent.
  • Developer Nirvana: Deploy once, run everywhere with zero modifications.
1:1
EVM Equivalence
L1 Sec
Security Model
03

The Solution: Type 4 (High-Performance) ZK-VMs

These abandon strict EVM compatibility for a custom intermediate representation (IR) like zkWASM or zkMIPS. This model wins on raw performance and cost for application-specific chains and hyper-scaled general L2s. Polygon zkEVM, zkSync Era, and Scroll are evolving towards this via custom precompiles and circuits.

  • ~10x Cost Advantage: Optimized circuits for specific operations (e.g., Uniswap swaps, AAVE lending).
  • Vertical Integration: Tailored for app-chains and high-throughput DeFi.
  • Faster Proof Times: ~1-10 second proof generation vs. minutes for Type 1.
10x
Cheaper Ops
~2s
Proof Time
04

The Investment Thesis: Bet on the Aggregators

Value will accrue to the shared proving networks and settlement layers that service these models, not to individual L2s. This mirrors the consolidation seen in Celestia vs. rollups and EigenLayer vs. AVSs.

  • Proving as a Service: Networks like Risc Zero, Succinct, and Espresso will commoditize proof generation.
  • Settlement Monopolies: Ethereum L1 and a few Alt-L1s (e.g., NEAR) will become the dominant settlement hubs.
  • Exit Strategy: Invest in infrastructure enabling the bifurcation, not in yet another generic L2.
$10B+
Proving Market
2-3
Settlement Hubs
05

The Builder's Playbook: Choose Your Lane

Your application's needs dictate the ZK-EVM model. DeFi Primitives & Bridges requiring max security and composability (e.g., MakerDAO, Across) default to Type 1 environments. Consumer Apps & High-Frequency Trading (e.g., friend.tech, dYdX) prioritize low cost and speed on Type 4 systems.

  • Composability First? → Type 1 (Ethereum-aligned).
  • Cost/Speed First? → Type 4 (ZK-VM).
  • Avoid the Middle: Type 2/3 (parity-equivalent) models are transient, caught in a cost/performance trap.
Type 1
For DeFi
Type 4
For Apps
06

The Inevitable Endgame: A Bipolar Ecosystem

Within 3-5 years, the ecosystem consolidates around Ethereum Settlement (Type 1) and Performance Hubs (Type 4). Interoperability protocols like LayerZero, Wormhole, and Polymer will bridge these poles. The "L2 wars" end not with one winner, but with a stable, specialized duality.

  • Security Layer: Ethereum + Type 1 ZK-EVMs for store-of-value and core DeFi.
  • Performance Layer: Type 4 ZK-VM clusters for scalable social, gaming, and trading.
  • Universal Liquidity: Intent-based bridges (UniswapX, CowSwap) abstract the complexity away.
3-5 Yrs
Timeframe
2 Models
Survivors
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