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the-modular-blockchain-thesis-explained
Blog

Why Execution Layers Will Become Application-Specific

The monolithic one-size-fits-all chain is dead for high-performance use cases. This post argues that gaming, DeFi, and social apps will demand their own optimized execution environments, a shift made inevitable by modular data availability layers.

introduction
THE END OF THE MONOLITH

Introduction

The era of general-purpose execution layers is ending, replaced by specialized chains optimized for specific application logic.

General-purpose chains are inefficient. They force all applications to compete for the same, expensive block space, leading to unpredictable costs and performance. This one-size-fits-all model is a fundamental bottleneck for adoption.

Application-specific execution layers solve this. By tailoring the virtual machine, data availability, and consensus to a single app's needs, they achieve radical efficiency gains. This is the logical evolution from shared L1s to rollups and appchains.

The evidence is in deployment. Projects like dYdX (trading) and Aevo (options) migrated to sovereign chains for sub-cent fees and custom throughput. Ethereum's rollup-centric roadmap and Celestia's modular data layer are infrastructure built for this future.

This shift redefines scalability. Scalability is no longer about a single chain's TPS, but the aggregate throughput of thousands of specialized environments. The monolithic L1 becomes a settlement and security hub, not the execution workhorse.

thesis-statement
THE END OF GENERAL-PURPOSE CHAINS

The Core Argument

The future of blockchain execution is defined by application-specific rollups, not monolithic L1s or general-purpose L2s.

Application-specific rollups win because they optimize for a single use case. A DEX rollup like dYdX v4 eliminates irrelevant opcodes, enabling hyper-optimized state management and lower fees for its core function.

General-purpose chains are inefficient. They force all applications to subsidize a bloated, one-size-fits-all VM. This creates unnecessary overhead for apps like a gaming rollup that doesn't need a full EVM.

The market is already pivoting. Frax Finance built its own L2, Fraxtal, for its stablecoin ecosystem. Lisk and Saga are launching app-specific chain frameworks, proving the demand for dedicated execution environments.

Evidence: Base, while general-purpose, demonstrates the power of vertical integration; its deep integration with Coinbase creates a user acquisition and distribution moat that generic chains cannot replicate.

ARCHITECTURAL TRADEOFFS

The Execution Layer Spectrum: General vs. Specific

Comparing execution environment design paradigms for blockchain applications, from monolithic L1s to hyper-specialized app-chains.

Architectural MetricGeneral-Purpose L1 (e.g., Ethereum, Solana)General-Purpose L2 / Rollup (e.g., Arbitrum, Optimism)Application-Specific Rollup (e.g., dYdX, Aevo)

Execution Environment

Single, shared for all apps

Single, shared for all apps

Dedicated, isolated for one app

Throughput (Max TPS)

15-50

200-4,000

10,000+ (theoretical)

Sovereignty / Forkability

MEV Capture by App

< 5%

10-30%

90%

Time-to-Finality (L1)

~12 minutes

~12 minutes (via L1)

< 1 second (internal)

Upgrade Governance

Ethereum community / Core devs

Sequencer multisig / DAO

App developer team / DAO

Gas Fee Predictability

Volatile, auction-based

More stable, but L1-dependent

Fixed, subsidized, or zero

Custom Precompiles / Opcodes

false (requires hard fork)

Limited (via fraud/validity proof circuits)

true (native to VM)

deep-dive
THE EXECUTION

The Modular Backend Enabler

General-purpose blockchains are being unbundled into specialized execution layers optimized for specific application logic and user experiences.

Application-specific execution layers are inevitable because monolithic L1s force a one-size-fits-all performance model. A DeFi exchange and an on-chain game have fundamentally different compute, storage, and latency requirements, which a single VM cannot optimally serve.

The EVM is a bottleneck, not a standard. It enforces a specific gas model and opcode set that is suboptimal for high-frequency trading (needs sub-second finality) or complex gaming logic (needs cheap state operations). Projects like dYdX and Sorare migrated to dedicated app-chains to escape these constraints.

Modularity enables specialization. With shared data availability from Celestia or EigenDA and security from Ethereum via rollups, teams build execution environments with custom VMs (like FuelVM or SVM), fee markets, and governance. This is the backend-as-a-service model for Web3.

Evidence: The migration is already measurable. dYdX v4 abandoned StarkEx for a Cosmos app-chain, citing sovereignty and performance. Arbitrum Orbit and OP Stack chains are proliferating, offering developers a template to launch their own optimized execution layer.

protocol-spotlight
EXECUTION LAYER FRAGMENTATION

Early Signals: Who's Building This Future?

General-purpose L1s and L2s are being unbundled by teams building custom execution layers optimized for specific application logic.

01

dYdX Chain: The Perp-Optimized L1

Migrated from StarkEx L2 to its own Cosmos SDK chain. The Problem: Generic L2s couldn't match the throughput and composability needed for a leading perpetuals exchange. The Solution: A sovereign chain with a custom mempool, order book module, and zero gas fees for trading.\n- ~2,000 TPS for order matching vs. ~50 TPS on Ethereum L1\n- Proposer-Builder-Separation (PBS) for MEV management\n- Validator rewards directly tied to protocol fees

~2k TPS
Throughput
$0
Trade Fees
02

Aevo: The Options-Specific L2

An Optimistic Rollup built with the OP Stack, exclusively for options and perpetuals. The Problem: Options require complex, stateful logic (settlements, expiries) that is expensive and slow on general-purpose chains. The Solution: A dedicated environment with a centralized sequencer for sub-second block times and custom precompiles.\n- ~500ms block times enable near-CEX latency\n- Custom fraud proof system for financial primitives\n- Shared security and bridging via Ethereum

500ms
Block Time
L2
Ethereum Secured
03

Hyperliquid: The Appchain Thesis in Production

A monolithic L1 built on Tendermint, purpose-built as a decentralized derivatives exchange. The Problem: Relying on external execution layers creates bottlenecks in sovereignty, upgradeability, and fee capture. The Solution: Full-stack control over the consensus client, mempool, and matching engine.\n- > $500M peak TVL as a standalone chain\n- Native perpetuals with up to 50x leverage\n- All fees accrue to stakers and the protocol treasury

$500M+
Peak TVL
50x
Max Leverage
04

Eclipse: The SVM Rollup for High-Frequency Apps

Provides a customizable rollup using the Solana Virtual Machine (SVM) for execution, settled to any settlement layer. The Problem: Developers want Solana's performance but require Ethereum's security or Celestia's data availability. The Solution: A modular rollup that decouples execution (SVM), settlement (Ethereum), and data availability (Celestia).\n- 10k+ TPS potential via parallel execution\n- Familiar tooling for Solana developers (Rust, Anchor)\n- Enables app-specific chains without building a new VM

10k+
Potential TPS
SVM
Execution Env
05

The Shared Sequencer Play: Espresso & Astria

Infrastructure to outsource sequencing for multiple rollups, enabling cross-rollup composability. The Problem: Isolated rollup sequencers create fragmented liquidity and user experience. The Solution: A shared, decentralized network of sequencers that can order transactions across many app-chains atomically.\n- Enables atomic cross-rollup arbitrage and composability\n- Provides credible neutrality vs. a single-entity sequencer\n- Reduces overhead for individual appchain teams

Atomic
Cross-Rollup
Decentralized
Sequencing
06

Fuel: The Parallelized Execution Layer

A modular execution layer designed from the ground up for parallel transaction processing. The Problem: EVM and most VMs process transactions sequentially, capping throughput for high-volume applications. The Solution: A UTXO-based model with strict state access lists, enabling massive parallelization.\n- Theoretical TPS limited only by hardware\n- Native account abstraction and predicate scripts\n- Sits as an execution layer between DA and settlement

Parallel
Execution
UTXO
State Model
counter-argument
THE NETWORK EFFECT FALLACY

The Liquidity Counter-Argument (And Why It's Wrong)

The belief that a single execution layer must aggregate all liquidity is a legacy financial model that ignores programmable settlement.

Liquidity follows execution. The dominant narrative assumes a single L1 or L2 must win. This is false. Application-specific rollups like dYdX and Lyra prove liquidity consolidates around superior user experience, not a generic chain. Their success fragments the monolithic liquidity thesis.

Shared sequencing enables fragmentation. Protocols like Espresso and Astria provide neutral, cross-rollup block building. This allows a rollup for derivatives and a rollup for gaming to share liquidity and composability without sharing execution, making hyper-specialization viable.

Intent-based architectures abstract liquidity. Systems like UniswapX, CowSwap, and Across use solver networks to source liquidity across any chain or venue. The user sees one trade; the protocol routes across fragmented pools. The execution layer becomes an implementation detail.

Evidence: The L2 landscape. Arbitrum, Optimism, and zkSync each host dominant, chain-specific DeFi ecosystems. Liquidity did not consolidate; it specialized. The total value locked (TVL) across top L2s now rivals Ethereum L1, demonstrating fragmentation is the growth vector.

takeaways
WHY EXECUTION LAYERS WILL BECOME APPLICATION-SPECIFIC

Key Takeaways for Builders and Investors

General-purpose blockchains are a bottleneck. The future is a constellation of specialized execution environments optimized for specific use cases.

01

The Problem: The Monolithic Bottleneck

General-purpose L1s and L2s force all apps to compete for the same, expensive, and often bloated execution environment. This creates a fundamental misalignment between an app's needs and the chain's capabilities.

  • Performance Contention: A high-frequency DEX and an NFT mint compete for the same blockspace, degrading UX for both.
  • Inefficient Resource Pricing: Apps pay for generic VM opcodes they don't use, while lacking optimized primitives they need.
  • Innovation Lag: Protocol upgrades require hard forks or L2-wide governance, slowing down application-layer iteration.
1000x
Gas Variance
~2s
Base Latency
02

The Solution: Sovereign App-Chains & Rollups

Application-specific chains (like dYdX v4, Aevo) and rollups (powered by stacks like Arbitrum Orbit, OP Stack, Polygon CDK) allow developers to own their execution layer.

  • Tailored Architecture: Build with a custom VM (e.g., FuelVM, Eclipse SVM), gas token, data availability layer (Celestia, EigenDA), and sequencer.
  • Predictable Economics: Capture MEV, set your own fee market, and monetize the chain's blockspace directly.
  • Sovereign Upgrades: Deploy protocol changes without third-party permission, enabling rapid feature deployment and experimentation.
-90%
Cost for Users
<100ms
Finality Target
03

The New Stack: Modularity as a Service

The rise of shared security (EigenLayer), modular DA (Avail, Celestia), and interoperability layers (LayerZero, Axelar, Wormhole) commoditizes chain deployment. This turns 'building a chain' into a configuration problem.

  • Security-as-a-Service: Bootstrap validator sets via restaking, avoiding the cold-start security problem.
  • Composable Liquidity: Use intent-based bridges and shared sequencing networks (Espresso, Astria) for seamless cross-chain UX.
  • Specialized VMs: Choose execution environments optimized for gaming (Paima), DeFi (Fuel), or AI (Ritual).
$1B+
TVL Secured
Weeks
Deploy Time
04

The Investment Thesis: Vertical Integration

The value accrual shifts from generic L1 tokens to the application's own token and the underlying modular infrastructure providers. This creates a new investment landscape.

  • App-Token Utility: The chain's native token becomes essential for fees, staking, and governance, directly correlating with usage.
  • Infrastructure Moats: Winners will be platforms that dominate a key modular layer (DA, interoperability, sequencing) or offer the best vertical stack (AltLayer, Caldera).
  • VC Play: Early investment in teams building the foundational primitives for specific verticals (e.g., decentralized social, RWA, on-chain gaming).
10-100x
Fee Capture
New Asset Class
Infra Tokens
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Why Execution Layers Will Become Application-Specific | ChainScore Blog