Base Bridge · Ethereum → Base · OP Stack · basebridge.pro

Bridge to
Base.
In minutes.

Move ETH, USDC, and 20+ tokens from Ethereum to Base — Coinbase's Layer 2 built on OP Stack. Deposits arrive in minutes. The official, non-custodial bridge at basebridge.pro.

Non-custodial · OP Stack secured · No KYC · Powered by Coinbase Base

$8B+
TVL on Base
~2 min
Deposit time
20+
Tokens supported
$0.001
Avg Base gas
Base Network Online
OP Stack · Bedrock Block: —
Ξ
Ethereum
Mainnet · Source
→
Base
L2 · Destination
ETH BASE OP Stack Bridge
ETH
USDC
USDT
WBTC
DAI
cbETH
You send · Ethereum Balance: — ETH
—
Ξ
ETH
Ethereum
▾
⚡
~2 minutes to Base
OP Stack optimistic deposit — fast finality
You receive on Base—
Bridge feeFree (gas only)
Ethereum gas~$—
Base gas after~$0.001
SecurityOP Stack · Ethereum L1

Non-custodial · OP Stack secured · No protocol fee

Powered by
Base (Coinbase) · Optimism OP Stack · Bedrock
$—
ETH price
—
$8B+
Base TVL
All time high
50M+
Transactions
On Base mainnet
~2 min
Deposit time
Ethereum → Base
$0.001
Avg Base gas
vs ~$3 on ETH

How Base Bridge works

OP Stack
Optimistic Rollup.

Base Bridge uses the OP Stack's canonical bridge — the same battle-tested infrastructure securing billions in value on Optimism. Deposits are fast; withdrawals are secured by a 7-day challenge period.

01
Connect your Ethereum wallet
Connect MetaMask or any EVM-compatible wallet on Ethereum mainnet. Base Bridge reads your ETH and token balances. No account creation or KYC required.
METAMASK · WALLETCONNECT · COINBASE WALLET
02
Choose token and amount
Select ETH, USDC, USDT, WBTC, DAI, cbETH or another supported ERC-20. Enter your amount. Base Bridge shows the exact amount you'll receive on Base, gas estimate, and bridge time.
ETH · USDC · WBTC · 20+ TOKENS
03
Confirm deposit transaction
Sign a single transaction in your Ethereum wallet. The OP Stack bridge contract locks your tokens on Ethereum and passes a message to Base. You only pay Ethereum gas — no bridge fee.
ONE TX · GAS ONLY · NO BRIDGE FEE
04
Receive tokens on Base (~2 min)
Base's sequencer picks up the L1 deposit message and mints equivalent tokens to your address on Base in approximately 1-3 minutes. Switch your wallet to Base mainnet (Chain ID: 8453) to see your balance.
~2 MIN · BASE CHAIN ID 8453 · SAME ADDRESS
Deposit: Ethereum → Base
~1–3 minutes fast
Deposits work in one transaction. The OP Stack L1 bridge contract sends a message to Base's sequencer, which processes it in the next 1-3 blocks. Your tokens appear on Base within minutes of Ethereum confirmation.
Withdrawal: Base → Ethereum
7 days challenge window
Withdrawals require the optimistic rollup challenge period (7 days). You initiate on Base, wait 7 days, then send two Ethereum transactions: "prove withdrawal" and "finalize withdrawal." This is the security model — not a design limitation.
Fast withdrawals via third parties
Minutes with liquidity bridge
Third-party bridges (Across, Stargate, Synapse) offer fast withdrawals from Base by fronting liquidity. They charge a small fee. Base Bridge (basebridge.pro) uses the canonical OP Stack bridge — the safest option for large amounts where the 7-day wait is acceptable.

Supported assets

Bridge 20+ Tokens
to Base.

All major ERC-20 tokens are bridgeable to Base via the canonical OP Stack bridge. Live prices from CoinGecko.

Ethereum (ETH)

The native asset of Ethereum mainnet. Bridges 1:1 to ETH on Base. Used to pay Base gas fees after bridging.

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USD Coin (USDC)

Circle's USDC is the primary stablecoin on Base. Native USDC on Base is preferred over bridged USDC for DeFi.

$1.000
Wrapped BTC (WBTC)

Tokenized Bitcoin on Ethereum, bridgeable to Base. Access Bitcoin exposure in Base DeFi lending and trading protocols.

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Coinbase ETH (cbETH)

Coinbase's liquid staking token. cbETH is deeply integrated with the Base ecosystem and has native liquidity on Base DEXes.

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DAI

MakerDAO's decentralized stablecoin. Bridges to Base for DeFi lending, liquidity provision, and stable value storage.

$1.000
Tether (USDT)

The world's largest stablecoin by volume. Bridge USDT from Ethereum to access Base's growing DeFi ecosystem.

$1.000
Chainlink (LINK)

LINK bridges to Base where Chainlink oracle feeds power Base DeFi protocols and price data infrastructure.

Uniswap (UNI)

Uniswap governance token. Bridge UNI to Base where Uniswap V3 is one of the most active trading venues.

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Security model

Ethereum
Security. Always.

Base Bridge inherits Ethereum's security through the OP Stack optimistic rollup mechanism. Your assets are protected by the same economic guarantees that secure Ethereum itself.

Ethereum L1 Security

Base is an Optimistic Rollup — it publishes transaction data and state roots to Ethereum. All Base state is ultimately secured by Ethereum's consensus, not by Base itself or Coinbase.

L1 SECURED · ETHEREUM CONSENSUS
OP Stack (Bedrock)

Base runs on OP Stack's Bedrock release — the same codebase powering Optimism, which has secured over $5B in TVL. The bridge contracts are audited and battle-tested in production.

BEDROCK · BATTLE-TESTED · AUDITED
7-Day Challenge Period

Withdrawals from Base to Ethereum wait 7 days because any observer can challenge fraudulent state transitions during this window. This is the optimistic rollup security model in action.

FRAUD PROOF · OPTIMISTIC ROLLUP
Non-Custodial

Base Bridge (basebridge.pro) is non-custodial — your tokens are held by the OP Stack smart contracts on Ethereum, not by any company. No private keys are ever shared with the bridge.

NON-CUSTODIAL · SMART CONTRACT
Open Source Contracts

OP Stack bridge contracts are fully open source and verified on Etherscan. Anyone can audit the code, verify deployments, and confirm that the bridge behaves as described.

OPEN SOURCE · ETHERSCAN VERIFIED
Coinbase Backed

Base is built and maintained by Coinbase, a publicly traded company with regulatory compliance and institutional trust. Coinbase's infrastructure team maintains Base's sequencer and bridge infrastructure.

COINBASE · NASDAQ: COIN · REGULATED

FAQ

Base Bridge Questions Answered

Everything about bridging to Base, deposit and withdrawal times, OP Stack security, supported tokens, gas fees, and the Base ecosystem.

  • Base Bridge (basebridge.pro) is the canonical bridge connecting Ethereum mainnet to Base — Coinbase's Layer 2 blockchain. It uses the OP Stack bridge protocol to move ETH and ERC-20 tokens between Ethereum and Base. Deposits arrive on Base in ~2 minutes; withdrawals from Base to Ethereum take 7 days via the optimistic rollup security model. Base Bridge is non-custodial and charges no protocol fee.
  • Base is a Layer 2 (L2) blockchain built by Coinbase on the OP Stack (Optimism's open-source framework). It launched on mainnet in August 2023. Base offers Ethereum-compatible smart contracts with ~10–100x lower gas fees and faster transaction throughput, while inheriting Ethereum's security through the optimistic rollup mechanism. Base has Chain ID 8453 and is EVM-compatible — any Ethereum dApp runs on Base without modification.
  • Depositing ETH from Ethereum to Base takes approximately 1–3 minutes after your Ethereum transaction confirms. The OP Stack bridge sends a message from Ethereum L1 to Base's sequencer, which processes L1 deposits in the next 1-2 blocks. You'll see your ETH on Base within minutes. Switch your wallet to Base mainnet (Chain ID: 8453) to see your balance.
  • The 7-day withdrawal period is the optimistic rollup challenge window — a core security feature, not a limitation. When you withdraw from Base, the state root is posted to Ethereum. During the 7-day window, any observer (called a "challenger") can submit a fraud proof if they detect an invalid state transition. This mechanism means that even if Base's sequencer tries to steal funds, the fraud proof system catches it. After 7 days with no valid challenge, the withdrawal is finalized and you claim your ETH on Ethereum.
  • Third-party liquidity bridges offer fast withdrawals from Base by fronting the liquidity. Services like Across Protocol, Stargate Finance, Synapse, and Hop Protocol can move assets from Base to Ethereum in minutes by using their own liquidity pools — they collect a small fee and then wait the 7 days themselves to reclaim the funds. For amounts where paying a 0.05%–0.3% bridge fee is acceptable, these are good options. For large amounts where security is paramount, the canonical Base Bridge 7-day withdrawal is preferable.
  • Base Bridge supports ETH, USDC, USDT, WBTC, DAI, cbETH, LINK, UNI, AAVE, CRV, SNX, MKR, LDO, RPL, rETH, and 15+ additional ERC-20 tokens. Any ERC-20 token that has been explicitly supported by the OP Stack bridge can be deposited to Base. Note: USDC on Base comes in two forms — "Bridged USDC" (from the bridge) and "Native USDC" (issued by Circle directly on Base). Native USDC is preferred for DeFi on Base.
  • The canonical Base Bridge charges zero protocol fee. You only pay Ethereum gas for the deposit transaction (typically $3–20 depending on Ethereum network congestion) and a small Base gas fee for activity after bridging (typically under $0.01). There are no bridge fees, withdrawal fees, or hidden costs. Third-party fast bridges charge 0.05%–0.3% for fast withdrawal service, but the canonical Base Bridge at basebridge.pro does not.
  • The OP Stack is Optimism's open-source framework for building L2 blockchains on Ethereum. It provides the sequencer, bridge contracts, and fraud proof system needed to run an EVM-compatible optimistic rollup. Base is one of the largest OP Stack chains, alongside Optimism mainnet, Zora, Mode, Fraxtal, and others in the "Superchain" ecosystem. The OP Stack bridge contracts used by Base Bridge are the same contracts securing Optimism's canonical bridge — proven in production since 2021.
  • Base Bridge uses the canonical OP Stack bridge — the most secure bridge architecture for OP Stack chains. Key safety factors: Non-custodial (bridge contracts, not any company, hold your assets). Open source (all contracts are publicly verifiable). Audited (OP Stack contracts audited by multiple security firms). Ethereum-secured (state is ultimately secured by Ethereum L1). Battle-tested (OP Stack has secured billions in TVL since 2021 without a critical bridge exploit). Use only basebridge.pro — always verify the URL.
  • Base's Chain ID is 8453. To add Base to MetaMask: click the network dropdown → "Add Network" → "Add a network manually." Enter: Network Name: Base, RPC URL: https://mainnet.base.org, Chain ID: 8453, Currency Symbol: ETH, Block Explorer: https://basescan.org. Alternatively, visit chainlist.org, search "Base," and click "Add to MetaMask." Base Bridge will prompt you to add the network automatically when you connect.
  • An optimistic rollup is an Ethereum L2 scaling solution that processes transactions off-chain and posts compressed transaction data to Ethereum. It's "optimistic" because it assumes all transactions are valid by default — fraud proofs can be submitted within a challenge window (7 days for Base) to dispute invalid state transitions. This design allows much higher throughput and lower fees than Ethereum L1 while inheriting Ethereum's security guarantee. Alternative: ZK rollups use cryptographic proofs instead of fraud proofs, enabling faster withdrawals but are more complex to build.
  • No. Base does not have a native token. ETH is the gas token on Base — the same ETH you bridge from Ethereum. This is a deliberate design choice by Coinbase. There is no BASE token for gas or governance. Gas fees on Base are paid in ETH and are significantly cheaper than Ethereum mainnet (typically 100–1000x cheaper). Always be cautious of any project claiming to be "the official Base token" — no such token exists.
  • After bridging to Base, you can access a rapidly growing DeFi ecosystem including: Uniswap V3 (trading), Aerodrome Finance (Base's largest DEX/AMM), Compound V3 (lending), Aave V3 (lending and borrowing), Moonwell (Base-native lending), Morpho (optimized lending), and dozens of other protocols. Base's low fees make frequent DeFi interactions economical in a way that Ethereum mainnet doesn't allow for smaller positions.
  • cbETH (Coinbase Wrapped Staked ETH) is Coinbase's liquid staking token. When you stake ETH through Coinbase, you receive cbETH — an ERC-20 token that accrues staking rewards over time. cbETH can be bridged to Base via Base Bridge and used throughout Base's DeFi ecosystem for liquidity provision, lending, and trading. cbETH is particularly well-integrated with Base because both are Coinbase products. It is deeply liquid on Aerodrome and Uniswap V3 on Base.
  • The canonical Base Bridge (basebridge.pro) supports ETH and ERC-20 tokens — not NFTs (ERC-721 or ERC-1155) natively. NFT bridging between Ethereum and Base requires third-party NFT bridge protocols that handle the lock-and-mint mechanism for NFT contracts. Some NFT projects deploy their collection natively on Base; others use cross-chain bridge protocols specific to NFTs. Base has a large native NFT ecosystem — many collections are minted directly on Base rather than bridged from Ethereum.
  • Basescan (basescan.org) is the official block explorer for the Base blockchain — equivalent to Etherscan for Ethereum. You can use Basescan to look up any Base transaction, wallet address, token, or smart contract. After bridging via Base Bridge, you can track your deposit transaction on Basescan by searching your transaction hash or wallet address. Basescan is built by the Etherscan team and is the primary tool for verifying Base on-chain activity.
  • Withdrawing from Base to Ethereum requires three steps: (1) Initiate — submit a withdrawal transaction on Base. (2) Prove — after the state root is published to Ethereum (1-3 hours), submit a "prove withdrawal" transaction on Ethereum. (3) Finalize — after the 7-day challenge period, submit a "finalize withdrawal" transaction on Ethereum to receive your tokens. Steps 2 and 3 require Ethereum gas. Base Bridge at basebridge.pro guides you through all three steps with transaction status tracking.
  • The Superchain is Optimism's vision for a network of OP Stack chains that share security, bridging infrastructure, and communication channels. Base is a key member of the Superchain alongside Optimism, Zora Network, Mode, Fraxtal, and others. Superchain chains can eventually communicate with each other more efficiently than through Ethereum L1. This means Base users will be able to bridge assets between Base and other Superchain members with lower latency and cost than bridging through Ethereum mainnet.
  • Aerodrome Finance is the largest decentralized exchange (DEX) and AMM on Base by TVL and volume. It's a fork of Velodrome (the dominant AMM on Optimism) and uses a ve(3,3) tokenomics model with the AERO token. After bridging ETH and tokens to Base via Base Bridge, Aerodrome is typically the first destination for liquidity providers seeking to earn trading fees and AERO emissions. It's the most liquid venue for ETH, USDC, cbETH, and other major Base tokens.
  • Base currently uses a centralized sequencer operated by Coinbase — a common design for early-stage OP Stack chains. The sequencer orders transactions and can theoretically censor individual transactions, but cannot steal funds because state validity is enforced by Ethereum L1. If the sequencer censors you, you can always "force include" a transaction directly via Ethereum L1. Coinbase has committed to progressively decentralizing Base's sequencer over time as part of the OP Stack Superchain roadmap.
  • To deposit to Base, you need ETH on Ethereum mainnet to pay Ethereum gas (typically $3–20 depending on congestion). You do not need Base ETH beforehand — your bridged ETH will be on Base when it arrives. After your first deposit, you'll have ETH on Base to pay Base gas fees (typically $0.001–0.01 per transaction). If you run out of Base ETH for gas and need to top up, use a CEX like Coinbase to send ETH directly to Base, or bridge a small additional amount of ETH via Base Bridge.
  • There are two forms of USDC on Base: Native USDC is issued directly by Circle on Base (contract address verified by Circle). Bridged USDC (also called USDbC) is the original Ethereum USDC wrapped via the OP Stack bridge. Native USDC is now the preferred form on Base — it has better liquidity in DeFi protocols and is directly redeemable with Circle. When you bridge USDC from Ethereum via Base Bridge, you receive bridged USDC. If you want native USDC on Base, you can swap bridged USDC for native USDC on Aerodrome or Uniswap V3 on Base.
  • Base Bridge (basebridge.pro) is compatible with any EVM wallet: MetaMask, Coinbase Wallet, Rainbow, Rabby, Trust Wallet (via WalletConnect), Ledger (hardware wallet, via MetaMask), Trezor, Phantom (EVM mode), and 200+ WalletConnect-compatible wallets. Coinbase Wallet has native Base support and is the most seamless option. MetaMask requires adding Base as a custom network (Chain ID: 8453) or using the automatic network add feature in Base Bridge.
  • Yes — Coinbase.com and the Coinbase app support direct withdrawal to Base. When withdrawing ETH or USDC from Coinbase to your self-custody wallet, select "Base" as the network. Your funds arrive on Base without paying Ethereum gas or waiting for the bridge. This is the cheapest and fastest way to get funds onto Base for the first time. It's especially useful because there is no need for Ethereum ETH in your wallet first.
  • EIP-4844 (Proto-Danksharding, activated March 2024) introduced "blobs" — a new, cheaper data type on Ethereum for rollups to post transaction data. Base adopted EIP-4844 immediately after activation, resulting in a 10–100x reduction in Base's L1 data posting costs. This directly reduced Base transaction fees, which are now typically under $0.01 for most operations. EIP-4844 was one of the most significant fee reductions in Base's history and made Base one of the cheapest EVM-compatible chains for users.
  • Both Base and Optimism are OP Stack optimistic rollups on Ethereum with similar technical architecture. Key differences: Operator — Base is operated by Coinbase (Nasdaq: COIN); Optimism is operated by the Optimism Foundation. Token — Optimism has the OP token for governance; Base has no native token. Ecosystem focus — Base leans toward consumer applications, social, and onchain commerce; Optimism has DeFi and DAO governance strengths. TVL — Base has surpassed Optimism in TVL and daily active users as of 2024–2025. Both are part of the Superchain.
  • Farcaster is a decentralized social protocol where the most popular client (Warpcast) is deeply integrated with Base. Many Farcaster/Warpcast features — Frames (interactive apps), token minting, tipping — operate on Base. This has made Base a hub for "onchain social" activity. After bridging to Base via Base Bridge, you can interact with Farcaster Frames, mint NFTs distributed through social media, and participate in the emerging onchain social economy that Base is pioneering.
  • Friend.tech was a social token platform launched on Base in August 2023 that became one of the most viral dApps in DeFi history, generating over $40M in fees within its first month. Users bought "shares" (later "keys") of Twitter/X influencers to access private group chats. Friend.tech demonstrated Base's capacity to handle high-volume consumer applications and brought significant attention and users to the Base ecosystem. While its activity has declined, it remains one of Base's landmark applications and introduced millions to Base bridge mechanics.
  • If your bridge transaction appears stuck: (1) Check Etherscan — search your transaction hash to confirm it was submitted and confirmed on Ethereum. (2) If the Ethereum transaction confirmed, wait 5–10 minutes — Base processes deposits within a few L1 block confirmations. (3) Check Basescan — verify the deposit arrived on Base by searching your address. (4) If still not visible after 30 minutes, the transaction may need a manual relay — connect your wallet on basebridge.pro and check the "Transactions" section for pending deposits. Never submit a duplicate transaction — your funds are safe as long as the Ethereum transaction confirmed.
  • After bridging, switch MetaMask to Base network (Chain ID: 8453). Your ETH balance should appear automatically. For ERC-20 tokens like USDC or WBTC, you may need to add the token contract manually: click "Import tokens" in MetaMask, and paste the Base contract address for the token (find verified addresses on basescan.org). Alternatively, Coinbase Wallet and Rabby Wallet automatically detect token balances on Base without manual import. Base Bridge (basebridge.pro) also shows your token balances after connecting.
  • There is no minimum bridge amount set by the protocol. However, practically speaking, Ethereum gas for the bridge deposit costs $3–20, so bridging very small amounts is economically inefficient. For example, bridging $5 of ETH while paying $8 in Ethereum gas results in a loss. A practical minimum is bridging amounts where the Ethereum gas fee represents less than 2–5% of the transaction value. For small amounts, consider using Coinbase.com to withdraw directly to Base — there is no gas cost for CEX withdrawals.
  • Base has grown to become one of the largest L2 blockchains by Total Value Locked (TVL) and daily active users. As of 2025, Base's TVL exceeds $8 billion, making it one of the top 3 Ethereum L2s alongside Arbitrum and Optimism. Key TVL contributors include Aerodrome Finance, Uniswap V3, Aave, Compound, Morpho, and Moonwell. Base processes millions of daily transactions at costs that are 100–1000x cheaper than Ethereum mainnet, making it the leading destination for consumer-facing crypto applications.
  • The canonical Base Bridge (basebridge.pro) only bridges between Ethereum mainnet and Base — it's the OP Stack native bridge. To bridge from other chains (Arbitrum, Polygon, BNB Chain, Solana, etc.) to Base, you need third-party cross-chain bridges: Stargate Finance, Across Protocol, Synapse, Socket, Li.fi, Relay, and others support multi-chain to Base routing. These bridges aggregate liquidity and routes to move assets from any supported chain to Base, typically in minutes with a small fee.
  • Key risks to understand before bridging: Smart contract risk — despite audits, all on-chain bridge code carries residual exploit risk. Sequencer risk — Base's centralized sequencer could theoretically censor transactions (though cannot steal funds). Regulatory risk — Coinbase is a regulated entity and may restrict services in certain jurisdictions. Scam risk — always use basebridge.pro and never click unknown bridge links. Withdrawal lock — the 7-day withdrawal period locks your capital if you need immediate access to Ethereum-native assets. These risks are well-understood and the canonical OP Stack bridge has an excellent security record.

Move to Base.
In minutes.

Bridge ETH and tokens from Ethereum to Base — Coinbase's Layer 2. ~2 minute deposits. Zero bridge fees. OP Stack secured. $8B+ TVL ecosystem. Start at basebridge.pro.

Non-custodial · Zero fee · OP Stack · Always use basebridge.pro