Gully Chain developer docs
Gully Chain docs
Gully Chain is an Arbitrum Orbit L3 built by Gully Labs. It runs Arbitrum Nitro, settles to Arbitrum and pays gas in ETH. Any EVM contract, wallet or tool works on it unchanged, and Stylus lets you write contracts in Rust.
The testnet is live and settles to Arbitrum Sepolia. Mainnet will settle to Arbitrum One; it is not live yet.
Live
Watch the chain in real time on the testnet stats page: block height, transactions and gas per block, a live block feed, batch posting and service status.
#Start here
| If you want to | Read |
|---|---|
| Connect a wallet, get test ETH and deploy a first contract | Quickstart |
| Chain ID, RPC URL, explorer and other settings | Network reference |
| Addresses of WETH, Permit2, EntryPoint, the bridge and more | Contract addresses |
| Move ETH or tokens between Arbitrum Sepolia and Gully Chain | Bridging |
| Write contracts in Rust | Stylus |
| See what is live and what is coming | Status and changelog |
#Testnet at a glance
| Setting | Value |
|---|---|
| Network name | Gully Chain Testnet |
| Chain ID | 485590 (0x768d6) |
| RPC | https://testnet-rpc.gullychain.xyz |
| Explorer | testnet-explorer.gullychain.xyz |
| Bridge | testnet-bridge.gullychain.xyz |
| Faucet | faucet.gullychain.xyz |
| Gas token | ETH (18 decimals) |
| Parent chain | Arbitrum Sepolia (421614) |
#How the chain fits together
Your app talks to Gully Chain over standard EVM JSON-RPC. Gully Chain is a layer 3: its sequencer posts transaction batches to Arbitrum Sepolia, and Arbitrum in turn settles to Ethereum. Mainnet will use Arbitrum One as the parent chain.
What ships on top of the bare chain, and where each piece stands today:
- Bridge and tokens (live): the canonical Arbitrum token bridge for ETH and ERC-20 tokens, plus WETH9 and Permit2.
- Smart accounts (rolling out): ERC-4337 EntryPoint v0.7 and v0.8 and the Safe 4337 module are deployed. The bundler, paymaster and Safe core contracts come next. See Account abstraction.
- .gully names (coming): readable names like
alice.gully. See .gully names. - DeepCore launchpad (coming): built into the chain. See DeepCore launchpad.
Note
The testnet may be reset as the chain moves toward mainnet. Do not keep anything on it that you cannot redeploy.