Contract Addresses

CRITICAL: Never hallucinate a contract address. Wrong addresses mean lost funds. If an address isn't listed here, look it up on the block explorer or the protocol's official docs before using it.

Last Verified: February 16, 2026 (all addresses verified onchain via eth_getCode + eth_call)

Verify any address at runtime:

# Check contract exists (returns bytecode, or 0x if EOA)
sh scripts/rpc.sh code 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48

# Read contract identity
sh scripts/rpc.sh call 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 "symbol()(string)"

(scripts/rpc.sh is from the ethereum-networks skill)

Stablecoins

USDC (Circle) — Native

USDT (Tether)

DAI (MakerDAO)

Wrapped ETH (WETH)

Liquid Staking

Lido — wstETH (Wrapped stETH)

Lido — Staking & Withdrawal

Rocket Pool

DeFi Protocols

Uniswap

V2 (Mainnet)

V3 (Mainnet)

V3 Multi-Chain

V4 (Live Since January 31, 2025)

⚠️ V4 addresses are DIFFERENT per chain — unlike V3, they are NOT deterministic CREATE2 deploys. Do not assume the same address works cross-chain.

V4 Multi-Chain

Universal Router (V4 — Current)

Universal Router (V3 — Legacy)

Permit2 (Universal Token Approval)

Used by Uniswap Universal Router and many other protocols. Same address on all chains (CREATE2).

Verified on: Mainnet, Arbitrum, Base, Optimism (identical bytecode on all).

UNI Token

1inch Aggregation Router

Use aggregators for best swap prices — they route across all DEXs.

V6 (Current — same address on all chains via CREATE2)

V5 (Legacy)

MakerDAO / Sky

sDAI is an ERC-4626 vault — deposit DAI, earn DSR automatically. Check current rate via pot.dsr().

Aave

V2 (Mainnet - Legacy)

V3 (Mainnet)

V3 Multi-Chain

Compound

V2 (Mainnet - Legacy)

V3 Comet (USDC Markets)

Curve Finance (Mainnet)

Balancer V2 (Mainnet)

NFT & Marketplaces

OpenSea Seaport

Multi-chain via CREATE2 (Ethereum, Polygon, Arbitrum, Optimism, Base).

ENS (Mainnet)

Infrastructure

Safe (Gnosis Safe)

Account Abstraction (ERC-4337)

All EVM chains (CREATE2).

Chainlink

Mainnet

Additional Mainnet Feeds

All feeds confirmed returning live prices via latestAnswer() (Feb 16, 2026).

ETH/USD Price Feeds (Multi-Chain)

LINK Token (Multi-Chain)

EigenLayer (Mainnet)

Restaking protocol. Both are upgradeable proxies (EIP-1967).

Source: eigenlayer.xyz

Obol Splits — Factory Contracts

Obol's Ethereum Validator Manager and reward splitting contracts. Factory contract pattern. Used with splits.org splitter smart contracts and gnosis SAFEs.

Obol Validator Manager Factory

Obol Lido Split Factory

Optimistic Withdrawal Recipient (OWR) Factory

Source: docs.obol.org/learn/readme/obol-splits#deployments

Splits.org (0xSplits) — Payment Splitting

Onchain payment splitting protocol. Obol uses Splits under the hood for validator reward distribution. V2 contracts are deployed via CreateX (same address on all chains). Prefer V2.

V1 — SplitMain

Verified on: Mainnet, Optimism, Arbitrum, Polygon, Base, Gnosis, BSC (identical address via CREATE2).

V2 — SplitsWarehouse (ERC-6909 token wrapper)

Holds tokens on behalf of recipients in the pull-flow model. Replaces SplitMain as the central fund-holding contract.

V2 — PullSplitFactory (recipients withdraw from warehouse)

V2 — PushSplitFactory (funds pushed to recipients on distribute)

All V2 addresses verified identical on: Mainnet, Arbitrum, Optimism, Base (CreateX deterministic deployment).

Source: github.com/0xSplits/splits-contracts-monorepo

Chainlink CCIP Router (v1.2.0)

Cross-chain messaging. Call typeAndVersion() to confirm — returns "Router 1.2.0".

Source: docs.chain.link/ccip

Across Protocol — SpokePool

Cross-chain bridge. All SpokePool contracts are upgradeable proxies.

Source: docs.across.to/reference/contract-addresses

Yearn V3 (Mainnet)

Deployed via CREATE2. Addresses below verified on Mainnet — verify on other chains before use.

Source: docs.yearn.fi/developers/addresses/v3-contracts

Deterministic Deployer (CREATE2)

Same address on every EVM chain. Used by many protocols for deterministic deployments.

L2-Native Protocols

The dominant DEX on each L2 is NOT Uniswap. Aerodrome dominates Base, Velodrome dominates Optimism, Camelot is a major native DEX on Arbitrum. Don't default to Uniswap — check which DEX has the deepest liquidity on each chain.

Aerodrome (Base) — Dominant DEX

The largest DEX on Base by TVL (~$500-600M). Uses the ve(3,3) model — LPs earn AERO emissions, veAERO voters earn 100% of trading fees. This is the opposite of Uniswap where LPs earn fees directly.

Source: aerodrome-finance/contracts

Velodrome V2 (Optimism) — Dominant DEX

Same ve(3,3) model as Aerodrome — same team (Dromos Labs). Velodrome was built first for Optimism, Aerodrome is the Base fork. Both merged into "Aero" in November 2025.

⚠️ V1 VELO token (0x3c8B650257cFb5f272f799F5e2b4e65093a11a05) is deprecated. Use V2 above.

Source: velodrome-finance/contracts

GMX V2 (Arbitrum) — Perpetual DEX

Leading onchain perpetual exchange. V2 uses isolated GM pools per market (Fully Backed and Synthetic). Competes with Hyperliquid.

Note: Both Exchange Router addresses are valid — both point to the same DataStore. The latest (0x1C3f...) is from the current gmx-synthetics repo deployment.

Source: gmx-io/gmx-synthetics

Pendle (Arbitrum) — Yield Trading

Tokenizes future yield into PT (Principal Token) and YT (Yield Token). Core invariant: SY_value = PT_value + YT_value. Multi-chain (also on Ethereum, Base, Optimism).

Source: pendle-finance/pendle-core-v2-public

Camelot (Arbitrum) — Native DEX

Arbitrum-native DEX with concentrated liquidity and launchpad. Two AMM versions: V2 (constant product) and V4 (Algebra concentrated liquidity).

Source: docs.camelot.exchange

SyncSwap (zkSync Era) — Dominant DEX

The leading native DEX on zkSync Era. Multiple router and factory versions.

Note: SYNC token is not yet deployed.

Source: docs.syncswap.xyz

Morpho Blue (Base)

Permissionless lending protocol. Deployed on Base and Ethereum, but NOT on Arbitrum as of February 2026 (despite the vanity CREATE2 address).

Source: docs.morpho.org

AI & Agent Standards

ERC-8004 (Same addresses on 20+ chains)

Verified on: Mainnet, Arbitrum, Base, Optimism (CREATE2 — same address on all chains).

Full function reference and JSON ABIs for ERC-8004 registries coming soon via the agent-identity skill.

Major Tokens (Mainnet)

How to Verify Addresses

# Check bytecode exists (use local eRPC if running in Obol Stack)
cast code 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 --rpc-url http://erpc.erpc.svc.cluster.local:4000/rpc/mainnet
# Fallback public RPC: https://eth.llamarpc.com

Cross-reference: Protocol docs → CoinGecko → block explorer → GitHub deployments.

EIP-55 Checksum: Mixed case = checksum. Most tools validate automatically.

Address Discovery Resources

• •Uniswap: https://docs.uniswap.org/contracts/v3/reference/deployments/
• •Aave: https://docs.aave.com/developers/deployed-contracts/deployed-contracts
• •Compound V3: https://docs.compound.finance/
• •Chainlink: https://docs.chain.link/data-feeds/price-feeds/addresses
• •Aerodrome: https://github.com/aerodrome-finance/contracts
• •Velodrome: https://github.com/velodrome-finance/contracts
• •GMX: https://github.com/gmx-io/gmx-synthetics
• •Pendle: https://github.com/pendle-finance/pendle-core-v2-public
• •Camelot: https://docs.camelot.exchange/contracts/arbitrum/one-mainnet
• •SyncSwap: https://docs.syncswap.xyz/syncswap/smart-contracts/smart-contracts
• •Morpho: https://docs.morpho.org/get-started/resources/addresses/
• •Lido: https://docs.lido.fi/deployed-contracts/
• •Rocket Pool: https://docs.rocketpool.net/overview/contracts-integrations
• •1inch: https://docs.1inch.io/docs/aggregation-protocol/introduction
• •EigenLayer: https://docs.eigenlayer.xyz/
• •Obol Splits: https://docs.obol.org/learn/readme/obol-splits#deployments
• •Splits.org (0xSplits): https://github.com/0xSplits/splits-contracts-monorepo/tree/main/packages/splits-v2/deployments
• •Across: https://docs.across.to/reference/contract-addresses
• •Chainlink CCIP: https://docs.chain.link/ccip/directory/mainnet
• •Yearn V3: https://docs.yearn.fi/developers/addresses/v3-contracts
• •CoinGecko: https://www.coingecko.com (token addresses)
• •Token Lists: https://tokenlists.org/
• •DeFi Llama: https://defillama.com (TVL rankings by chain)

Multi-Chain Notes

• •CREATE2 deployments (same address cross-chain): Uniswap V3, Safe, Seaport, ERC-4337 EntryPoint, ERC-8004, Permit2, 1inch v6, Yearn V3, Splits.org (V1 + V2), Arachnid Deployer
• •Different addresses per chain: USDC, USDT, DAI, WETH, wstETH, Uniswap V4, Across SpokePool, Chainlink CCIP Router — always check per-chain
• •Native vs Bridged USDC: Some chains have both! Use native.

✅ All addresses verified onchain via eth_getCode + eth_call — February 16, 2026. Bytecode confirmed present, identity confirmed via symbol/name/cross-reference calls. Does NOT guarantee safety — always verify on block explorer before sending transactions.