Contract Addresses

Verified contract addresses for major EVM protocols across Ethereum, Arbitrum, Optimism, Base, and Polygon. Covers tokens, DEXes, lending, bridges, and infrastructure. Use as a reference when building integrations — every address is checksummed and should be verified onchain before use in production.

justaname-id Updated Sep 17, 2026

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License: Apache-2
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Contract Addresses

Canonical contract addresses for major EVM protocols. Reference skill for agents building integrations across Ethereum, Arbitrum, Optimism, Base, and Polygon.

Last verified: February 2026 — All addresses verified onchain via cast code. Always re-verify before mainnet use.

What You Probably Got Wrong

Addresses differ across chains — USDC on Arbitrum is NOT the same address as USDC on Ethereum. Never assume cross-chain address parity except for contracts deployed via CREATE2 at deterministic addresses.
Bridged vs. native tokens — Many chains have both a bridged USDC (USDC.e) and a native USDC. Using the wrong one causes failed swaps and lost funds. This reference lists the canonical native version where available.
Checksums matter — EIP-55 mixed-case checksums prevent sending to mistyped addresses. Always use checksummed addresses.
Proxy vs. implementation — Most protocol addresses listed here are proxies. The implementation behind them can change via governance. Verify the proxy's current implementation if you need the ABI.
Uniswap has multiple routers — SwapRouter (V3-only), SwapRouter02 (V2+V3), and Universal Router (V2+V3+NFTs) are different contracts. Most integrations should use Universal Router.

Stablecoins

USDC (Circle)

Chain	Address	Notes
Ethereum	`0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48`	Native USDC, 6 decimals
Arbitrum	`0xaf88d065e77c8cC2239327C5EDb3A432268e5831`	Native USDC (not USDC.e)
Optimism	`0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85`	Native USDC (not USDC.e)
Base	`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`	Native USDC
Polygon	`0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359`	Native USDC (not USDC.e)

USDC.e (Bridged USDC)

Chain	Address	Notes
Arbitrum	`0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8`	Legacy bridged, being deprecated
Optimism	`0x7F5c764cBc14f9669B88837ca1490cCa17c31607`	Legacy bridged
Polygon	`0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174`	Legacy bridged

USDT (Tether)

Chain	Address	Notes
Ethereum	`0xdAC17F958D2ee523a2206206994597C13D831ec7`	6 decimals, no return value on transfer
Arbitrum	`0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9`	Bridged USDT
Optimism	`0x94b008aA00579c1307B0EF2c499aD98a8ce58e58`	Bridged USDT
Polygon	`0xc2132D05D31c914a87C6611C10748AEb04B58e8F`	Bridged USDT

DAI (MakerDAO)

Chain	Address	Notes
Ethereum	`0x6B175474E89094C44Da98b954EedeAC495271d0F`	18 decimals
Arbitrum	`0xDA10009cBd5D07dd0CeCc66161FC93D7c9000da1`	Bridged DAI
Optimism	`0xDA10009cBd5D07dd0CeCc66161FC93D7c9000da1`	Same address as Arbitrum (CREATE2)
Polygon	`0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063`	Bridged DAI

Wrapped Tokens

WETH (Wrapped Ether)

Chain	Address	Notes
Ethereum	`0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2`	Canonical WETH9
Arbitrum	`0x82aF49447D8a07e3bd95BD0d56f35241523fBab1`	WETH on Arbitrum
Optimism	`0x4200000000000000000000000000000000000006`	Predeploy address
Base	`0x4200000000000000000000000000000000000006`	Predeploy address (same as OP)
Polygon	`0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619`	Bridged WETH

wstETH (Lido Wrapped Staked ETH)

Chain	Address	Notes
Ethereum	`0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0`	Canonical wstETH
Arbitrum	`0x5979D7b546E38E9aB8E801a884a0710832C3fD7b`	Bridged wstETH
Optimism	`0x1F32b1c2345538c0c6f582fCB022739c4A194Ebb`	Bridged wstETH
Base	`0xc1CBa3fCea344f92D9239c08C0568f6F2F0ee452`	Bridged wstETH
Polygon	`0x03b54A6e9a984069379fae1a4fC4dBAE93B3bCCD`	Bridged wstETH

DEX Routers

Uniswap

Contract	Ethereum	Arbitrum	Optimism	Base	Polygon
Universal Router	`0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD`	`0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD`	`0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD`	`0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD`	`0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD`
SwapRouter02	`0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45`	`0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45`	`0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45`	`0x2626664c2603336E57B271c5C0b26F421741e481`	`0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45`
V3 Factory	`0x1F98431c8aD98523631AE4a59f267346ea31F984`	`0x1F98431c8aD98523631AE4a59f267346ea31F984`	`0x1F98431c8aD98523631AE4a59f267346ea31F984`	`0x33128a8fC17869897dcE68Ed026d694621f6FDfD`	`0x1F98431c8aD98523631AE4a59f267346ea31F984`
V3 NonfungiblePositionManager	`0xC36442b4a4522E871399CD717aBDD847Ab11FE88`	`0xC36442b4a4522E871399CD717aBDD847Ab11FE88`	`0xC36442b4a4522E871399CD717aBDD847Ab11FE88`	`0x03a520b32C04BF3bEEf7BEb72E919cf822Ed34f1`	`0xC36442b4a4522E871399CD717aBDD847Ab11FE88`

Uniswap V2 (Ethereum only)

Contract	Address
V2 Router	`0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D`
V2 Factory	`0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f`

Lending

Aave V3

Contract	Ethereum	Arbitrum	Optimism	Base	Polygon
Pool	`0x87870Bca3F3fD6335C3F4ce8392D69350B4fA4E2`	`0x794a61358D6845594F94dc1DB02A252b5b4814aD`	`0x794a61358D6845594F94dc1DB02A252b5b4814aD`	`0xA238Dd80C259a72e81d7e4664a9801593F98d1c5`	`0x794a61358D6845594F94dc1DB02A252b5b4814aD`
PoolAddressesProvider	`0x2f39d218133AFaB8F2B819B1066c7E434Ad94E9e`	`0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb`	`0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb`	`0xe20fCBdBfFC4Dd138cE8b2E6FBb6CB49777ad64D`	`0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb`

Compound V3 (Comet)

Market	Ethereum	Arbitrum	Base	Polygon
USDC Comet	`0xc3d688B66703497DAA19211EEdff47f25384cdc3`	`0xA5EDBDD9646f8dFF606d7448e414884C7d905dCA`	`0xb125E6687d4313864e53df431d5425969c15Eb2F`	`0xF25212E676D1F7F89Cd72fFEe66158f541246445`
WETH Comet	`0xA17581A9E3356d9A858b789D68B4d866e593aE94`	`0x6f7D514bbD4aFf3BcD1140B7344b32f063dEe486`	`0x46e6b214b524310239732D51387075E0e70970bf`	--

Oracles

Chainlink Price Feeds

Feed	Ethereum	Arbitrum	Optimism	Base
ETH/USD	`0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419`	`0x639Fe6ab55C921f74e7fac1ee960C0B6293ba612`	`0x13e3Ee699D1909E989722E753853AE30b17e08c5`	`0x71041dddad3595F9CEd3DcCFBe3D1F4b0a16Bb70`
BTC/USD	`0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c`	`0x6ce185860a4963106506C203335A2910413708e9`	`0xD702DD976Fb76Fffc2D3963D037dfDae5b04E593`	--
USDC/USD	`0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6`	`0x50834F3163758fcC1Df9973b6e91f0F0F0434aD3`	`0x16a9FA2FDa030272Ce99B29CF780dFA30361E0f3`	`0x7e860098F58bBFC8648a4311b374B1D669a2bc6B`
LINK/USD	`0x2c1d072e956AFFC0D435Cb7AC38EF18d24d9127c`	`0x86E53CF1B870786351Da77A57575e79CB55812CB`	`0xCc232dcFAAE6354cE191Bd574108c1aD03f86229`	`0x17CAb8FE31cA45e4684E33E3D258F20E88B8fD8B`

Chainlink Infrastructure

Contract	Ethereum	Arbitrum	Base
Feed Registry	`0x47Fb2585D2C56Fe188D0E6ec628a38b74fCeeeDf`	--	--
VRF Coordinator V2.5	`0xD7f86b4b8Cae7D942340FF628F82735b7a20893a`	`0x3C0Ca683b403E37668AE3DC4FB62F4B29B6f7a3e`	`0xd5D517aBE5cF79B7e95eC98dB0f0277788aFF634`

Infrastructure

Multicall

Contract	Address	Chains
Multicall3	`0xcA11bde05977b3631167028862bE2a173976CA11`	All major EVM chains (deterministic CREATE2 deployment)

CREATE2 Deployers

Contract	Address	Chains
Deterministic Deployment Proxy	`0x4e59b44847b379578588920cA78FbF26c0B4956C`	All major EVM chains
Create2Deployer (OpenZeppelin)	`0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2`	All major EVM chains

ENS (Ethereum Only)

Contract	Address
ENS Registry	`0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e`
Public Resolver	`0x231b0Ee14048e9dCcD1d247744d114a4EB5E8E63`
Reverse Registrar	`0xa58E81fe9b61B5c3fE2AFD33CF304c454AbFc7Cb`
ETH Registrar Controller	`0x253553366Da8546fC250F225fe3d25d0C782303b`

Safe (Gnosis Safe)

Contract	Address	Chains
Safe Singleton (1.4.1)	`0x41675C099F32341bf84BFc5382aF534df5C7461a`	All major EVM chains
Safe Proxy Factory (1.4.1)	`0x4e1DCf7AD4e460CfD30791CCC4F9c8a4f820ec67`	All major EVM chains
MultiSend (1.4.1)	`0x38869bf66a61cF6bDB996A6aE40D5853Fd43B526`	All major EVM chains
Safe Singleton (1.3.0)	`0xd9Db270c1B5E3Bd161E8c8503c55cEABeE709552`	All major EVM chains
Safe Proxy Factory (1.3.0)	`0xa6B71E26C5e0845f74c812102Ca7114b6a896AB2`	All major EVM chains

Permit2 (Uniswap)

Contract	Address	Chains
Permit2	`0x000000000022D473030F116dDEE9F6B43aC78BA3`	All major EVM chains (deterministic CREATE2)

Bridges

Arbitrum Native Bridge

Contract	Address	Chain
L1 Gateway Router	`0x72Ce9c846789fdB6fC1f34aC4AD25Dd9ef7031ef`	Ethereum
L1 ERC20 Gateway	`0xa3A7B6F88361F48403514059F1F16C8E78d60EeC`	Ethereum
L2 Gateway Router	`0x5288c571Fd7aD117beA99bF60FE0846C4E84F933`	Arbitrum
Inbox	`0x4Dbd4fc535Ac27206064B68FfCf827b0A60BAB3f`	Ethereum

Optimism Native Bridge

Contract	Address	Chain
L1StandardBridge (Proxy)	`0x99C9fc46f92E8a1c0deC1b1747d010903E884bE1`	Ethereum
L2StandardBridge	`0x4200000000000000000000000000000000000010`	Optimism (predeploy)
L1CrossDomainMessenger (Proxy)	`0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1`	Ethereum
L2CrossDomainMessenger	`0x4200000000000000000000000000000000000007`	Optimism (predeploy)
OptimismPortal (Proxy)	`0xbEb5Fc579115071764c7423A4f12eDde41f106Ed`	Ethereum

Base Native Bridge

Contract	Address	Chain
L1StandardBridge (Proxy)	`0x3154Cf16ccdb4C6d922629664174b904d80F2C35`	Ethereum
L2StandardBridge	`0x4200000000000000000000000000000000000010`	Base (predeploy)
L1CrossDomainMessenger (Proxy)	`0x866E82a600A1414e583f7F13623F1aC5d58b0Afa`	Ethereum
L2CrossDomainMessenger	`0x4200000000000000000000000000000000000007`	Base (predeploy)
OptimismPortal (Proxy)	`0x49048044D57e1C92A77f79988d21Fa8fAF36f97B`	Ethereum

Governance

Major Protocol Governance

Protocol	Contract	Address	Chain
Uniswap	Governor Bravo	`0x408ED6354d4973f66138C91495F2f2FCbd8724C3`	Ethereum
Uniswap	Timelock	`0x1a9C8182C09F50C8318d769245beA52c32BE35BC`	Ethereum
Compound	Governor Bravo	`0xc0Da02939E1441F497fd74F78cE7Decb17B66529`	Ethereum
Compound	Timelock	`0x6d903f6003cca6255D85CcA4D3B5E5146dC33925`	Ethereum
Aave	Governance V3	`0x9AEE0B04504CeF83A65AC3f0e838D0593BCb2BC7`	Ethereum

Governance Tokens

Token	Address	Chain
UNI	`0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984`	Ethereum
COMP	`0xc00e94Cb662C3520282E6f5717214004A7f26888`	Ethereum
AAVE	`0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE9`	Ethereum
LDO	`0x5A98FcBEA516Cf06857215779Fd812CA3beF1B32`	Ethereum
LINK	`0x514910771AF9Ca656af840dff83E8264EcF986CA`	Ethereum
MKR	`0x9f8F72aA9304c8B593d555F12eF6589cC3A579A2`	Ethereum
CRV	`0xD533a949740bb3306d119CC777fa900bA034cd52`	Ethereum

OP Stack Predeploys

Shared across Optimism, Base, and all OP Stack chains at the same addresses.

Contract	Address
L2CrossDomainMessenger	`0x4200000000000000000000000000000000000007`
L2StandardBridge	`0x4200000000000000000000000000000000000010`
L2ToL1MessagePasser	`0x4200000000000000000000000000000000000016`
L1Block	`0x4200000000000000000000000000000000000015`
GasPriceOracle	`0x420000000000000000000000000000000000000F`
WETH (predeploy)	`0x4200000000000000000000000000000000000006`

How to Verify

Always verify addresses onchain before using them in production. Addresses in this reference may become outdated if protocols upgrade their proxies.

Using cast (Foundry)

Check if code exists at an address:

cast code 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 --rpc-url $ETH_RPC_URL

A non-empty response confirms a contract exists. 0x means no contract (EOA or empty).

Verify a token's identity:

cast call 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 "symbol()(string)" --rpc-url $ETH_RPC_URL
cast call 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 "decimals()(uint8)" --rpc-url $ETH_RPC_URL

Check a proxy's implementation:

# EIP-1967 implementation slot
cast storage 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 \
  0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc \
  --rpc-url $ETH_RPC_URL

Using Etherscan API

# Verify contract is verified on Etherscan
curl "https://api.etherscan.io/api?module=contract&action=getabi&address=0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48&apikey=$ETHERSCAN_API_KEY"

Chain-specific explorers:

Ethereum: api.etherscan.io
Arbitrum: api.arbiscan.io
Optimism: api-optimistic.etherscan.io
Base: api.basescan.org
Polygon: api.polygonscan.com

Checksum Verification

Verify an address is correctly checksummed:

cast to-check-sum-address 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48

Important Caveats

Proxy upgrades -- Protocol governance can upgrade proxy implementations. The proxy address stays the same, but behavior may change. Monitor governance proposals for protocols you depend on.
Chain-specific behavior -- Same protocol may behave differently across chains. Aave V3 on Ethereum has different parameters (LTV, liquidation thresholds) than on Arbitrum.
Deprecated contracts -- USDC.e (bridged) is being phased out in favor of native USDC on L2s. Old router addresses may still work but lack new features.
Token decimals -- USDC/USDT use 6 decimals. DAI/WETH use 18. Never assume 18 decimals.
USDT non-standard -- USDT's transfer() and approve() do not return a boolean. Use OpenZeppelin's SafeERC20 or viem's built-in handling.

References

---name: contract-addressesdescription: Verified contract addresses for major EVM protocols across Ethereum, Arbitrum, Optimism, Base, and Polygon. Covers tokens, DEXes, lending, bridges, and infrastructure. Use as a reference when building integrations — every address is checksummed and should be verified onchain before use in production.license: Apache-2.0---# Contract AddressesCanonical contract addresses for major EVM protocols. Reference skill for agents building integrations across Ethereum, Arbitrum, Optimism, Base, and Polygon.> **Last verified: February 2026** — All addresses verified onchain via `cast code`. Always re-verify before mainnet use.## What You Probably Got Wrong- **Addresses differ across chains** — USDC on Arbitrum is NOT the same address as USDC on Ethereum. Never assume cross-chain address parity except for contracts deployed via CREATE2 at deterministic addresses.- **Bridged vs. native tokens** — Many chains have both a bridged USDC (USDC.e) and a native USDC. Using the wrong one causes failed swaps and lost funds. This reference lists the canonical native version where available.- **Checksums matter** — EIP-55 mixed-case checksums prevent sending to mistyped addresses. Always use checksummed addresses.- **Proxy vs. implementation** — Most protocol addresses listed here are proxies. The implementation behind them can change via governance. Verify the proxy's current implementation if you need the ABI.- **Uniswap has multiple routers** — SwapRouter (V3-only), SwapRouter02 (V2+V3), and Universal Router (V2+V3+NFTs) are different contracts. Most integrations should use Universal Router.## Stablecoins### USDC (Circle)| Chain | Address | Notes ||-------|---------|-------|| Ethereum | `0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48` | Native USDC, 6 decimals || Arbitrum | `0xaf88d065e77c8cC2239327C5EDb3A432268e5831` | Native USDC (not USDC.e) || Optimism | `0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85` | Native USDC (not USDC.e) || Base | `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` | Native USDC || Polygon | `0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359` | Native USDC (not USDC.e) |### USDC.e (Bridged USDC)| Chain | Address | Notes ||-------|---------|-------|| Arbitrum | `0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8` | Legacy bridged, being deprecated || Optimism | `0x7F5c764cBc14f9669B88837ca1490cCa17c31607` | Legacy bridged || Polygon | `0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174` | Legacy bridged |### USDT (Tether)| Chain | Address | Notes ||-------|---------|-------|| Ethereum | `0xdAC17F958D2ee523a2206206994597C13D831ec7` | 6 decimals, no return value on transfer || Arbitrum | `0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9` | Bridged USDT || Optimism | `0x94b008aA00579c1307B0EF2c499aD98a8ce58e58` | Bridged USDT || Polygon | `0xc2132D05D31c914a87C6611C10748AEb04B58e8F` | Bridged USDT |### DAI (MakerDAO)| Chain | Address | Notes ||-------|---------|-------|| Ethereum | `0x6B175474E89094C44Da98b954EedeAC495271d0F` | 18 decimals || Arbitrum | `0xDA10009cBd5D07dd0CeCc66161FC93D7c9000da1` | Bridged DAI || Optimism | `0xDA10009cBd5D07dd0CeCc66161FC93D7c9000da1` | Same address as Arbitrum (CREATE2) || Polygon | `0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063` | Bridged DAI |## Wrapped Tokens### WETH (Wrapped Ether)| Chain | Address | Notes ||-------|---------|-------|| Ethereum | `0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2` | Canonical WETH9 || Arbitrum | `0x82aF49447D8a07e3bd95BD0d56f35241523fBab1` | WETH on Arbitrum || Optimism | `0x4200000000000000000000000000000000000006` | Predeploy address || Base | `0x4200000000000000000000000000000000000006` | Predeploy address (same as OP) || Polygon | `0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619` | Bridged WETH |### wstETH (Lido Wrapped Staked ETH)| Chain | Address | Notes ||-------|---------|-------|| Ethereum | `0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0` | Canonical wstETH || Arbitrum | `0x5979D7b546E38E9aB8E801a884a0710832C3fD7b` | Bridged wstETH || Optimism | `0x1F32b1c2345538c0c6f582fCB022739c4A194Ebb` | Bridged wstETH || Base | `0xc1CBa3fCea344f92D9239c08C0568f6F2F0ee452` | Bridged wstETH || Polygon | `0x03b54A6e9a984069379fae1a4fC4dBAE93B3bCCD` | Bridged wstETH |## DEX Routers### Uniswap| Contract | Ethereum | Arbitrum | Optimism | Base | Polygon ||----------|----------|----------|----------|------|---------|| Universal Router | `0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD` | `0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD` | `0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD` | `0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD` | `0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD` || SwapRouter02 | `0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45` | `0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45` | `0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45` | `0x2626664c2603336E57B271c5C0b26F421741e481` | `0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45` || V3 Factory | `0x1F98431c8aD98523631AE4a59f267346ea31F984` | `0x1F98431c8aD98523631AE4a59f267346ea31F984` | `0x1F98431c8aD98523631AE4a59f267346ea31F984` | `0x33128a8fC17869897dcE68Ed026d694621f6FDfD` | `0x1F98431c8aD98523631AE4a59f267346ea31F984` || V3 NonfungiblePositionManager | `0xC36442b4a4522E871399CD717aBDD847Ab11FE88` | `0xC36442b4a4522E871399CD717aBDD847Ab11FE88` | `0xC36442b4a4522E871399CD717aBDD847Ab11FE88` | `0x03a520b32C04BF3bEEf7BEb72E919cf822Ed34f1` | `0xC36442b4a4522E871399CD717aBDD847Ab11FE88` |### Uniswap V2 (Ethereum only)| Contract | Address ||----------|---------|| V2 Router | `0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D` || V2 Factory | `0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f` |## Lending### Aave V3| Contract | Ethereum | Arbitrum | Optimism | Base | Polygon ||----------|----------|----------|----------|------|---------|| Pool | `0x87870Bca3F3fD6335C3F4ce8392D69350B4fA4E2` | `0x794a61358D6845594F94dc1DB02A252b5b4814aD` | `0x794a61358D6845594F94dc1DB02A252b5b4814aD` | `0xA238Dd80C259a72e81d7e4664a9801593F98d1c5` | `0x794a61358D6845594F94dc1DB02A252b5b4814aD` || PoolAddressesProvider | `0x2f39d218133AFaB8F2B819B1066c7E434Ad94E9e` | `0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb` | `0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb` | `0xe20fCBdBfFC4Dd138cE8b2E6FBb6CB49777ad64D` | `0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb` |### Compound V3 (Comet)| Market | Ethereum | Arbitrum | Base | Polygon ||--------|----------|----------|------|---------|| USDC Comet | `0xc3d688B66703497DAA19211EEdff47f25384cdc3` | `0xA5EDBDD9646f8dFF606d7448e414884C7d905dCA` | `0xb125E6687d4313864e53df431d5425969c15Eb2F` | `0xF25212E676D1F7F89Cd72fFEe66158f541246445` || WETH Comet | `0xA17581A9E3356d9A858b789D68B4d866e593aE94` | `0x6f7D514bbD4aFf3BcD1140B7344b32f063dEe486` | `0x46e6b214b524310239732D51387075E0e70970bf` | -- |## Oracles### Chainlink Price Feeds| Feed | Ethereum | Arbitrum | Optimism | Base ||------|----------|----------|----------|------|| ETH/USD | `0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419` | `0x639Fe6ab55C921f74e7fac1ee960C0B6293ba612` | `0x13e3Ee699D1909E989722E753853AE30b17e08c5` | `0x71041dddad3595F9CEd3DcCFBe3D1F4b0a16Bb70` || BTC/USD | `0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c` | `0x6ce185860a4963106506C203335A2910413708e9` | `0xD702DD976Fb76Fffc2D3963D037dfDae5b04E593` | -- || USDC/USD | `0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6` | `0x50834F3163758fcC1Df9973b6e91f0F0F0434aD3` | `0x16a9FA2FDa030272Ce99B29CF780dFA30361E0f3` | `0x7e860098F58bBFC8648a4311b374B1D669a2bc6B` || LINK/USD | `0x2c1d072e956AFFC0D435Cb7AC38EF18d24d9127c` | `0x86E53CF1B870786351Da77A57575e79CB55812CB` | `0xCc232dcFAAE6354cE191Bd574108c1aD03f86229` | `0x17CAb8FE31cA45e4684E33E3D258F20E88B8fD8B` |### Chainlink Infrastructure| Contract | Ethereum | Arbitrum | Base ||----------|----------|----------|------|| Feed Registry | `0x47Fb2585D2C56Fe188D0E6ec628a38b74fCeeeDf` | -- | -- || VRF Coordinator V2.5 | `0xD7f86b4b8Cae7D942340FF628F82735b7a20893a` | `0x3C0Ca683b403E37668AE3DC4FB62F4B29B6f7a3e` | `0xd5D517aBE5cF79B7e95eC98dB0f0277788aFF634` |## Infrastructure### Multicall| Contract | Address | Chains ||----------|---------|--------|| Multicall3 | `0xcA11bde05977b3631167028862bE2a173976CA11` | All major EVM chains (deterministic CREATE2 deployment) |### CREATE2 Deployers| Contract | Address | Chains ||----------|---------|--------|| Deterministic Deployment Proxy | `0x4e59b44847b379578588920cA78FbF26c0B4956C` | All major EVM chains || Create2Deployer (OpenZeppelin) | `0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2` | All major EVM chains |### ENS (Ethereum Only)| Contract | Address ||----------|---------|| ENS Registry | `0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e` || Public Resolver | `0x231b0Ee14048e9dCcD1d247744d114a4EB5E8E63` || Reverse Registrar | `0xa58E81fe9b61B5c3fE2AFD33CF304c454AbFc7Cb` || ETH Registrar Controller | `0x253553366Da8546fC250F225fe3d25d0C782303b` |### Safe (Gnosis Safe)| Contract | Address | Chains ||----------|---------|--------|| Safe Singleton (1.4.1) | `0x41675C099F32341bf84BFc5382aF534df5C7461a` | All major EVM chains || Safe Proxy Factory (1.4.1) | `0x4e1DCf7AD4e460CfD30791CCC4F9c8a4f820ec67` | All major EVM chains || MultiSend (1.4.1) | `0x38869bf66a61cF6bDB996A6aE40D5853Fd43B526` | All major EVM chains || Safe Singleton (1.3.0) | `0xd9Db270c1B5E3Bd161E8c8503c55cEABeE709552` | All major EVM chains || Safe Proxy Factory (1.3.0) | `0xa6B71E26C5e0845f74c812102Ca7114b6a896AB2` | All major EVM chains |### Permit2 (Uniswap)| Contract | Address | Chains ||----------|---------|--------|| Permit2 | `0x000000000022D473030F116dDEE9F6B43aC78BA3` | All major EVM chains (deterministic CREATE2) |## Bridges### Arbitrum Native Bridge| Contract | Address | Chain ||----------|---------|-------|| L1 Gateway Router | `0x72Ce9c846789fdB6fC1f34aC4AD25Dd9ef7031ef` | Ethereum || L1 ERC20 Gateway | `0xa3A7B6F88361F48403514059F1F16C8E78d60EeC` | Ethereum || L2 Gateway Router | `0x5288c571Fd7aD117beA99bF60FE0846C4E84F933` | Arbitrum || Inbox | `0x4Dbd4fc535Ac27206064B68FfCf827b0A60BAB3f` | Ethereum |### Optimism Native Bridge| Contract | Address | Chain ||----------|---------|-------|| L1StandardBridge (Proxy) | `0x99C9fc46f92E8a1c0deC1b1747d010903E884bE1` | Ethereum || L2StandardBridge | `0x4200000000000000000000000000000000000010` | Optimism (predeploy) || L1CrossDomainMessenger (Proxy) | `0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1` | Ethereum || L2CrossDomainMessenger | `0x4200000000000000000000000000000000000007` | Optimism (predeploy) || OptimismPortal (Proxy) | `0xbEb5Fc579115071764c7423A4f12eDde41f106Ed` | Ethereum |### Base Native Bridge| Contract | Address | Chain ||----------|---------|-------|| L1StandardBridge (Proxy) | `0x3154Cf16ccdb4C6d922629664174b904d80F2C35` | Ethereum || L2StandardBridge | `0x4200000000000000000000000000000000000010` | Base (predeploy) || L1CrossDomainMessenger (Proxy) | `0x866E82a600A1414e583f7F13623F1aC5d58b0Afa` | Ethereum || L2CrossDomainMessenger | `0x4200000000000000000000000000000000000007` | Base (predeploy) || OptimismPortal (Proxy) | `0x49048044D57e1C92A77f79988d21Fa8fAF36f97B` | Ethereum |## Governance### Major Protocol Governance| Protocol | Contract | Address | Chain ||----------|----------|---------|-------|| Uniswap | Governor Bravo | `0x408ED6354d4973f66138C91495F2f2FCbd8724C3` | Ethereum || Uniswap | Timelock | `0x1a9C8182C09F50C8318d769245beA52c32BE35BC` | Ethereum || Compound | Governor Bravo | `0xc0Da02939E1441F497fd74F78cE7Decb17B66529` | Ethereum || Compound | Timelock | `0x6d903f6003cca6255D85CcA4D3B5E5146dC33925` | Ethereum || Aave | Governance V3 | `0x9AEE0B04504CeF83A65AC3f0e838D0593BCb2BC7` | Ethereum |### Governance Tokens| Token | Address | Chain ||-------|---------|-------|| UNI | `0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984` | Ethereum || COMP | `0xc00e94Cb662C3520282E6f5717214004A7f26888` | Ethereum || AAVE | `0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE9` | Ethereum || LDO | `0x5A98FcBEA516Cf06857215779Fd812CA3beF1B32` | Ethereum || LINK | `0x514910771AF9Ca656af840dff83E8264EcF986CA` | Ethereum || MKR | `0x9f8F72aA9304c8B593d555F12eF6589cC3A579A2` | Ethereum || CRV | `0xD533a949740bb3306d119CC777fa900bA034cd52` | Ethereum |## OP Stack PredeploysShared across Optimism, Base, and all OP Stack chains at the same addresses.| Contract | Address ||----------|---------|| L2CrossDomainMessenger | `0x4200000000000000000000000000000000000007` || L2StandardBridge | `0x4200000000000000000000000000000000000010` || L2ToL1MessagePasser | `0x4200000000000000000000000000000000000016` || L1Block | `0x4200000000000000000000000000000000000015` || GasPriceOracle | `0x420000000000000000000000000000000000000F` || WETH (predeploy) | `0x4200000000000000000000000000000000000006` |## How to VerifyAlways verify addresses onchain before using them in production. Addresses in this reference may become outdated if protocols upgrade their proxies.### Using cast (Foundry)Check if code exists at an address:```bashcast code 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 --rpc-url $ETH_RPC_URL```A non-empty response confirms a contract exists. `0x` means no contract (EOA or empty).Verify a token's identity:```bashcast call 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 "symbol()(string)" --rpc-url $ETH_RPC_URLcast call 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 "decimals()(uint8)" --rpc-url $ETH_RPC_URL```Check a proxy's implementation:```bash# EIP-1967 implementation slotcast storage 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 \ 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc \ --rpc-url $ETH_RPC_URL```### Using Etherscan API```bash# Verify contract is verified on Etherscancurl "https://api.etherscan.io/api?module=contract&action=getabi&address=0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48&apikey=$ETHERSCAN_API_KEY"```Chain-specific explorers:- Ethereum: `api.etherscan.io`- Arbitrum: `api.arbiscan.io`- Optimism: `api-optimistic.etherscan.io`- Base: `api.basescan.org`- Polygon: `api.polygonscan.com`### Checksum VerificationVerify an address is correctly checksummed:```bashcast to-check-sum-address 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48```## Important Caveats- **Proxy upgrades** -- Protocol governance can upgrade proxy implementations. The proxy address stays the same, but behavior may change. Monitor governance proposals for protocols you depend on.- **Chain-specific behavior** -- Same protocol may behave differently across chains. Aave V3 on Ethereum has different parameters (LTV, liquidation thresholds) than on Arbitrum.- **Deprecated contracts** -- USDC.e (bridged) is being phased out in favor of native USDC on L2s. Old router addresses may still work but lack new features.- **Token decimals** -- USDC/USDT use 6 decimals. DAI/WETH use 18. Never assume 18 decimals.- **USDT non-standard** -- USDT's `transfer()` and `approve()` do not return a boolean. Use OpenZeppelin's `SafeERC20` or viem's built-in handling.## References- [Circle USDC Addresses](https://developers.circle.com/stablecoins/docs/usdc-on-main-networks)- [Uniswap Deployments](https://docs.uniswap.org/contracts/v3/reference/deployments)- [Aave V3 Deployed Contracts](https://docs.aave.com/developers/deployed-contracts/v3-mainnet)- [Compound V3 Deployments](https://docs.compound.finance/protocol/markets/)- [Chainlink Feed Registry](https://docs.chain.link/data-feeds/feed-registry)- [Safe Deployments](https://github.com/safe-global/safe-deployments)- [OP Stack Predeploys](https://docs.optimism.io/chain/addresses)- [Arbitrum Bridge Contracts](https://docs.arbitrum.io/build-decentralized-apps/reference/useful-addresses)- [ENS Deployments](https://docs.ens.domains/learn/deployments)- [Multicall3](https://www.multicall3.com/)

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