> For the complete documentation index, see [llms.txt](https://docs.lighter.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lighter.xyz/evm/chain-info.md).

# Chain Info

This page is the canonical quick reference for Lighter EVM chain-level configuration.

## Chain metadata

* The EVM chain ID is `chainId = 19_529 = 0x4C49 = "LI"`.
* The Core chain ID is `300` on the devnet. Use it for signing Core transactions and deriving [EVM-to-Core transaction hashes](/evm/interop/message-passing/evm-and-core.md#core-transaction-hash), not the EVM chain ID.
* The EVM block time is 1 second.

## Differences from L1 EVM

See [Differences from L1 EVM](/evm/differences-from-l1-evm.md) for the full list of differences.

## Precompiles

Protocol-specific precompiles available to contracts on Lighter EVM.

| Name        | Address                                      | Purpose                         |
| ----------- | -------------------------------------------- | ------------------------------- |
| `READ_CORE` | `0x6600000000000000000000000000000000000000` | Synchronous reads of Core state |

## Predeploys

Protocol-owned contracts deployed at fixed addresses in the Lighter EVM (L2) genesis state. Unlike [preinstalls](#preinstalls), which are third-party contracts included for developer convenience, predeploys are first-party protocol components with privileged roles in the system.

Most predeploys hold an upgradeable proxy as code, upgradeable only via a system transaction. The fee vaults, [`LighterWrappedERC20V1`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/token/LighterWrappedERC20V1.sol), and `WETH9` are deployed as bare contracts, immutably.

| Name                                                                                                                                                          | Address                                      | Purpose                                                                                              |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------- | ---------------------------------------------------------------------------------------------------- |
| [`EvmInteropManager`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/interop/EvmInteropManager.sol)                        | `0x6600000000000000000000000000000000000001` | User-facing entrypoint for EVM and Core token ops                                                    |
| [`SequencerFeeVault`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/SequencerFeeVault.sol)                                | `0x6600000000000000000000000000000000000002` | Fee vault; `COINBASE` resolves to this address and it receives the priority fees                     |
| [`EvmToCoreMessenger`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/messaging/EvmToCoreMessenger.sol)                    | `0x6600000000000000000000000000000000000003` | Low-level EVM -> Core write messenger                                                                |
| [`EvmToL1Messenger`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/messaging/EvmToL1Messenger.sol)                        | `0x6600000000000000000000000000000000000004` | Low-level EVM -> L1 withdrawal messenger                                                             |
| [`EvmReplayableMessenger`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/messaging/replayable/EvmReplayableMessenger.sol) | `0x6600000000000000000000000000000000000005` | L1 -> EVM replayable message relay                                                                   |
| [`EvmEscrowGateway`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/gateways/evm/DefaultEvmEscrowGateway.sol)              | `0x6600000000000000000000000000000000000006` | Gateway for bridging EVM-native tokens                                                               |
| [`LighterWrappedERC20V1`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/token/LighterWrappedERC20V1.sol)                  | `0x6600000000000000000000000000000000000007` | Initial wrapped token implementation                                                                 |
| [`EvmMintGateway`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/gateways/l1/DefaultEvmMintGateway.sol)                   | `0x6600000000000000000000000000000000000008` | Gateway for bridging L1-native tokens                                                                |
| [`EvmToCoreEntrypoint`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/messaging/EvmToCoreEntrypoint.sol)                  | `0x6600000000000000000000000000000000000009` | User-facing entrypoint for account and order writes to Core                                          |
| [`BaseFeeVault`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/SequencerFeeVault.sol)                                     | `0x660000000000000000000000000000000000000a` | Fee vault; receives the EVM base-fee                                                                 |
| [`PubdataFeeVault`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/SequencerFeeVault.sol)                                  | `0x660000000000000000000000000000000000000b` | Fee vault; receives the L1 data fee                                                                  |
| `WETH9`                                                                                                                                                       | `0x660000000000000000000000000000000000000c` | Canonical wrapped ETH (`WETH`); standard `WETH9` interface                                           |
| [`GasPriceOracle`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/GasPriceOracle.sol)                                      | `0x660000000000000000000000000000000000000d` | Exposes the current `blobBaseFee` for the [L1 data fee](/evm/differences-from-l1-evm/l1-data-fee.md) |
| [`EvmL1RefundClaimer`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/messaging/EvmL1RefundClaimer.sol)                    | `0x660000000000000000000000000000000000000e` | Holds deposit refunds owed to L1-controlled Core accounts                                            |

## Preinstalls

Preinstalls are third-party contracts included in genesis for developer convenience.

| Name                                        | Address                                      |
| ------------------------------------------- | -------------------------------------------- |
| `Safe`                                      | `0x69f4D1788e39c87893C980c06EdF4b7f686e2938` |
| `SafeL2`                                    | `0xfb1bffC9d739B8D520DaF37dF666da4C687191EA` |
| `MultiSend`                                 | `0x998739BFdAAdde7C933B942a68053933098f9EDa` |
| `MultiSendCallOnly`                         | `0xA1dabEF33b3B82c7814B6D82A79e50F4AC44102B` |
| `SafeSingletonFactory`                      | `0x914d7Fec6aaC8cd542e72Bca78B30650d45643d7` |
| `Multicall3`                                | `0xcA11bde05977b3631167028862bE2a173976CA11` |
| `CreateX`                                   | `0xba5Ed099633D3B313e4D5F7bdc1305d3c28ba5Ed` |
| `Arachnid's Deterministic Deployment Proxy` | `0x4e59b44847b379578588920cA78FbF26c0B4956C` |
| `Permit2`                                   | `0x000000000022D473030F116dDEE9F6B43aC78BA3` |
| `ERC-4337 v0.6.0 EntryPoint`                | `0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789` |
| `ERC-4337 v0.6.0 SenderCreator`             | `0x7fc98430eaedbb6070b35b39d798725049088348` |
| `ERC-4337 v0.7.0 EntryPoint`                | `0x0000000071727De22E5E9d8BAf0edAc6f37da032` |
| `ERC-4337 v0.7.0 SenderCreator`             | `0xEFC2c1444eBCC4Db75e7613d20C6a62fF67A167C` |
| `ERC-4337 v0.8.0 EntryPoint`                | `0x4337084D9E255Ff0702461CF8895CE9E3b5Ff108` |
| `ERC-4337 v0.8.0 SenderCreator`             | `0x449ed7c3e6fee6a97311d4b55475df59c44add33` |
| `ERC-4337 v0.9.0 EntryPoint`                | `0x433709009B8330FDa32311DF1C2AFA402eD8D009` |
| `ERC-4337 v0.9.0 SenderCreator`             | `0x0a630a99df908a81115a3022927be82f9299987e` |

## System addresses

Addresses that are not contracts but appear as transaction senders in the Lighter EVM.

| Name                | Address                                      | Purpose                                         |
| ------------------- | -------------------------------------------- | ----------------------------------------------- |
| Core system address | `0x7fFFfFfFFFfFFFFfFffFfFfFfffFFfFfFffFFFFf` | Sender of every Core-originated EVM transaction |

## EVM execution parameters

* `TARGET_GAS_LIMIT`: `4,250,000`
* `ELASTICITY_MULTIPLIER`: `4` (`MAX_GAS_LIMIT = 17,000,000`)
* `BASE_FEE_MAX_CHANGE_DENOMINATOR`: `334`
* `INITIAL_BASE_FEE`: `1 gwei`
* `MAX_PRIORITY_GAS_LIMIT`: `10,000,000`
* `BASE_FEE_OVERHEAD`: `120,000`
* `BASE_FEE_SCALAR`: `9,700,000,000,000`
* `PUBDATA_GAS_PER_BYTE`: `70` (see [L1 Data Fee](/evm/differences-from-l1-evm/l1-data-fee.md))

## Protocol smart contracts

The following smart contracts are deployed on the private L1.

| Name                                                                                                                                                        | Address                                      | Purpose                                                    |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------- | ---------------------------------------------------------- |
| [`ZkLighter`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/ZkLighter.sol)                                              | `0xd560b13C677E99499f496067a44ED355c69Aa51E` | L1 bridge                                                  |
| [`L1ReplayableMessenger`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/messaging/replayable/L1ReplayableMessenger.sol) | `0xD49203aFef6ED23b198371339E5055b79D74A95f` | L1 replayable message relay                                |
| [`L1InteropManager`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/interop/L1InteropManager.sol)                        | `0x8709B4047608BE3083dA13f703757A10f5B83A7c` | User-facing L1 entry point for sending tokens into Lighter |
| [`L1EscrowGateway`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/gateways/l1/DefaultL1EscrowGateway.sol)               | `0xf59c7a46614c343E51d95948E8686769eC8e9696` | Gateway for bridging L1-native tokens                      |
| [`L1MintGateway`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/gateways/evm/DefaultL1MintGateway.sol)                  | `0xc99AF9C0e19C8984c36b4CaFc7963B500542DF7c` | Gateway for bridging EVM-native tokens                     |
| [`L1CoreMessaging`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/messaging/L1CoreMessaging.sol)                        | `0x1eaeA4982372d591228D2a5465d55d3b26e809f9` | Messaging relay between Core and L1                        |
| [`Governance`](https://github.com/elliottech/lighter-contracts/blob/lighter-evm-devnet/contracts/Governance.sol)                                            | `0xAc2499795E7b45F21634C221496a5085017d141c` | Protocol governance                                        |


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