Constants

V2 SDK constants including factory addresses and init code hash.

Import

import {
  FACTORY_ADDRESS,
  FACTORY_ADDRESS_MAP,
  INIT_CODE_HASH,
  MINIMUM_LIQUIDITY,
} from '@uniswap/v2-sdk-next'

Factory Addresses

`FACTORY_ADDRESS`

The default V2 factory address (Ethereum mainnet).

const FACTORY_ADDRESS = '0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f'

Deprecated: Use FACTORY_ADDRESS_MAP instead.

`FACTORY_ADDRESS_MAP`

Factory addresses by chain ID.

import { FACTORY_ADDRESS_MAP } from '@uniswap/v2-sdk-next'
import { ChainId } from '@uniswap/sdk-core-next'
 
const mainnetFactory = FACTORY_ADDRESS_MAP[ChainId.MAINNET]
// '0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f'
 
const baseFactory = FACTORY_ADDRESS_MAP[ChainId.BASE]
// '0x8909dc15e40173ff4699343b6eb8132c65e18ec6'

Init Code Hash

`INIT_CODE_HASH`

The keccak256 hash of the pair bytecode, used for computing pair addresses.

const INIT_CODE_HASH = '0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f'

Used in CREATE2 address computation:

import { computePairAddress } from '@uniswap/v2-sdk-next'
 
const pairAddress = computePairAddress({
  factoryAddress: FACTORY_ADDRESS,
  tokenA,
  tokenB,
})
// Uses INIT_CODE_HASH internally

Liquidity Constants

`MINIMUM_LIQUIDITY`

The minimum liquidity locked in every pair (burned on first mint).

const MINIMUM_LIQUIDITY = 1000n

When a pair is first created, 1000 units of liquidity are permanently locked to prevent division by zero attacks.

Supported Chains

V2 is deployed on:

Chain	Factory Address
Ethereum	`0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f`
Optimism	`0x0c3c1c532F1e39EdF36BE9Fe0bE1410313E074Bf`
Arbitrum	`0xf1D7CC64Fb4452F05c498126312eBE29f30Fbcf9`
Polygon	`0x9e5A52f57b3038F1B8EeE45F28b3C1967e22799C`
Base	`0x8909dc15e40173ff4699343b6eb8132c65e18ec6`
BNB Chain	`0x8909Dc15e40173Ff4699343b6eB8132c65e18eC6`
Avalanche	`0x9e5A52f57b3038F1B8EeE45F28b3C1967e22799C`
Blast	`0x5C346464d33F90bABaf70dB6388507CC889C1070`
Celo	`0x79a530c8e2fA8748B7B40dd3629C0520c2cCf03f`