Overview
Disclaimer
- Some of the content in this section discusses technology in development and not ready for release.
- Please check against the main documentation site for any live releases.
- Feel free to experiment with any code in public repos.
The AggLayer is an in-development interoperability protocol that allows for trustless, cross-chain token transfers and message-passing, as well as more complex operations. The safety of the AggLayer is provided by ZK proofs.
The AggLayer currently connects chains built with Polygon CDK, a developer toolkit for designing ZK-powered Layer 2s. The long term goal for the protocol is to be flexible enough to provide interoperability among a growing range of blockchain architectures, including L2s, appchains, and non-EVM chains.
Chains connected to AggLayer¶
Here’s a list of chains connected to the alpha version of the AggLayer:
| Polygon IP Partner | Chain Partner | L2 Chain ID | Network Name |
|---|---|---|---|
| Startale Labs | Astar | 6038361 | zKyoto |
| Startale Labs | Astar | 3776 | Astar zkEVM |
| Gateway FM | GPT Protocol | 1511670449 | gpt-mainnet |
| Gateway FM | Haust | 1570754601 | haust-testnet |
| Gateway FM | Haust | 999 | haust-network |
| Gateway FM | Lumia | 1952959480 | Lumia Testnet |
| Gateway FM | Lumia | 994873017 | prism |
| Gateway FM | Moonveil | 1297206718 | moonveil-testnet |
| OKX | OKX | 195 | X Layer Devnet |
| OKX | OKX | 196 | X Layer |
| Gateway FM | Silicon | 1722641160 | silicon-sepolia-testnet |
| Gateway FM | Silicon | 2355 | silicon-zk |
| Gateway FM | WilderWorld | 1668201165 | zchain-testnet |
| Gateway FM | Wirex | 407985408 | wirex-pay-devnet |
| Gateway FM | Wirex | 31415 | pay-chain |
AggLayer components¶
Polygon CDK¶
The AggLayer connects chains built with Polygon CDK, which use ZK proofs to generate state transitions that are cryptographically secure.
Unified bridge¶
The unified bridge is a single bridge contract for all AggLayer-connected chains, allowing for the cross-chain transfer of fungible (non-wrapped) tokens. It is the source of unified liquidity for the AggLayer.
More information
See the unified bridge documentation for details.
AggLayer service¶
The AggLayer service is designed to receive ZK proofs from various CDK and non-CDK chains, and verify their validity before sending them to the L1 Ethereum for final settlement. Currently, the AggLayer service has two implementations: agglayer-go and agglayer-rs.