The 3 major mainstream approaches to chain abstraction

Wiki route

This entry sits under systems index. Read it against EigenLayer Overview · Restaking and the Leasing of Ethereum Cryptoeconomic Security for peer / contrast context and fintech index for the broader system / regulatory boundary.

Key facts

• Polygon AggLayer launched in 2024.02 v1 and supports connecting non-Polygon chains in 2025 v2 ^•
• AggLayer’s major partners: OKX X Layer / Astar zkEVM / Immutable, etc. ^•
• NEAR Chain Abstraction reached 2024.04 mainnet and supports 2025 12+ chains ^•
• NEAR core technologies: Chain Signatures (using MPC to control private keys on other chains) + NEAR Intents ^•
• EigenLayer reached 2024.04 mainnet, and at end-2025 TVL was > $15B ^•
• EigenDA / AltLayer / Hyperliquid are representative cases of the EigenLayer model ^•
• The 3 approaches follow completely different technical paths and may coexist ^•

Mechanism / How it works

1. Polygon AggLayer · shared liquidity + state: Multiple chains share ZK proofs + a unified bridge + unified liquidity pools. Cross-chain assets can interoperate directly without wrapping. Polygon shifts from a “single chain” to “chain-abstraction infrastructure.” Abstraction layer: liquidity + state. Major partners: OKX X Layer / Astar zkEVM / Immutable, etc. are connected.

2. NEAR Chain Abstraction · intent-driven + multi-chain accounts: Users use a single NEAR account to control private keys on other chains such as ETH / BTC / SOL through MPC (Chain Signatures). Intent input → solver network completes it through bidding → users see only the result. Abstraction layer: accounts + operational intents. NEAR shifts from L1 to an “account abstraction + cross-chain routing layer.”

3. EigenLayer / Hyperliquid model · shared security: Multiple applications / chains share the ETH validator set (restaking). New chains do not need to bootstrap validator economics and can directly lease ETH security (see Liquid Staking + Restaking Ecosystem + CEX Exposure). Abstraction layer: security / validator set. Representative cases include EigenDA / AltLayer / Hyperliquid (own L1 + borrowed security). This is not UX-layer abstraction but security-layer abstraction — users do not need to care “how many validators this chain has.”

Comparison of the 3 approaches:

Origin & evolution

The 2022-2023 cross-chain bridge era (Wormhole / LayerZero / Axelar) solved “whether assets can move cross-chain” but did not solve UX. 2024.02 AggLayer launched → Polygon preempted the “liquidity abstraction” position. 2024.04 NEAR released Chain Signatures (MPC cross-chain keys) + Intents → NEAR shifted to “account abstraction.” 2024.04 EigenLayer mainnet → “security abstraction” became possible through restaking. 2025 The 3 approaches each validated scalability: AggLayer connected 5+ non-Polygon chains, NEAR controlled 12+ chains, and EigenLayer TVL exceeded $15B. Whether the 2026+ 3 approaches merge or one wins remains unsettled.

Related

• Wiki Index
• Chain Abstraction Model Overview
• Cross-Chain Bridge Commoditization and the Upward Shift of Value to the Chain-Abstraction Layer
• BFT Validator Economics Overview

Sources

• Polygon AggLayer official documentation (liquidity + state abstraction) — https://docs.polygon.technology/agglayer/
• NEAR Chain Abstraction official documentation (account + intent abstraction) — https://docs.near.org/chain-abstraction/what-is
• NEAR MPC node implementation (threshold signatures for Chain Signatures) — https://github.com/near/mpc
• EigenLayer official documentation (security / validator-set abstraction) — https://docs.eigenlayer.xyz/