BTC Bridge
BTC Bridge lets you use native Bitcoin on another blockchain by exchanging it for a Bitcoin-backed token such as WBTC, cbBTC or tBTC. You send BTC through a supported route and receive tokens in a compatible wallet after Bitcoin confirmations, bridge processing and destination settlement.
BTC Bridge connects native Bitcoin to Ethereum and seven other networks through Bitcoin-backed tokens. Choose your destination and bridge BTC from your wallet.
Bridge Bitcoin
8 destination networks
BTC
BTC formats: WBTC, cbBTC, tBTC
Review the route, fees and receiving amount in the app.
Native BTC deposits · Bitcoin-backed assets · Your destination wallet
BTC Bridge key facts
| Networks compared | Bitcoin to 8 destinations: Ethereum, Base, Arbitrum, Solana, BNB Chain, Optimism, Polygon and Avalanche. |
|---|---|
| BTC token formats | WBTC, cbBTC, tBTC, BTCB and BTC.b; cbBTC is available on Ethereum, Base, Solana and Arbitrum. |
| Protocol fee example | tBTC standard mint fee: 0.20% (20 basis points), effective April 15, 2026, before eligible rebates. On 0.1 BTC, that is 0.0002 BTC (20,000 sats), plus network and settlement costs. |
| Confirmation time | About 10 minutes per Bitcoin confirmation on average: 3 confirmations take roughly 30 minutes; 6 take roughly 60 minutes. Deposit queueing, bridge processing and destination settlement add time. |
| What you need | BTC for the deposit and Bitcoin fee, a destination wallet, and gas for later transactions: ETH on Ethereum, Base, Arbitrum and Optimism; SOL on Solana; BNB on BNB Chain; POL on Polygon; AVAX on Avalanche. |
| Custody example | cbBTC is backed 1:1 by BTC held in Coinbase custody. Your receiving wallet holds the destination token; reserve custody and redemption depend on the chosen token. |
Protocol references: Threshold's tBTC fee update, Bitcoin confirmation documentation and Coinbase wrapped asset documentation.
How BTC Bridge connects Bitcoin to other networks
Bitcoin stays on its own blockchain. A bridge makes its value usable elsewhere by holding BTC in reserve and issuing or releasing a corresponding token on your chosen network.
You receive a Bitcoin-backed asset in your destination wallet. The token, network and redemption process belong to that route, so choosing a destination also means choosing how you hold and use your BTC.
- 8destination networks
- 100Msatoshis in one BTC
- ~10 minaverage Bitcoin block interval
- 3 partsto review in the total fee
BTC Bridge supported networks
Compare the token format, wallet type and gas asset before choosing where your bitcoin goes.
| Destination network | BTC token formats | Gas asset | Receiving wallet | Route |
|---|---|---|---|---|
| EthereumChain ID 1 | WBTC, cbBTC, tBTC | ETH | 0x address · EVM | ↗ |
 BaseChain ID 8453 | cbBTC, tBTC | ETH | 0x address · EVM | ↗ |
 ArbitrumChain ID 42161 | WBTC, cbBTC, tBTC | ETH | 0x address · EVM | ↗ |
 SolanaSolana mainnet | cbBTC, tBTC | SOL | Solana address | ↗ |
 BNB ChainChain ID 56 | BTCB | BNB | 0x address · EVM | ↗ |
 OptimismChain ID 10 | WBTC, tBTC | ETH | 0x address · EVM | ↗ |
 PolygonChain ID 137 | WBTC | POL | 0x address · EVM | ↗ |
 AvalancheChain ID 43114 | BTC.b | AVAX | 0x address · EVM | ↗ |
An EVM address can have the same format on several chains. Match the selected network as well as the address. Keep the destination gas asset available for later transfers.
How to bridge BTC from your wallet
Start with native BTC on Bitcoin and a receiving wallet on the destination chain. Keep both transaction records together as the transfer moves between networks.
Native BTC is the input. A Bitcoin-backed token is the output. The route defines the token contract and the path back to Bitcoin.
Choose your destination
Select the network and BTC token you want to receive. Check that your receiving wallet supports both.Review the transfer details
Enter the BTC amount and destination address. Review the total fees, confirmation requirement and receiving amount.Send your BTC deposit
Use the deposit address and amount assigned to your transfer. Save the Bitcoin transaction ID.Receive Bitcoin-backed tokens
Follow the Bitcoin confirmations and destination settlement. Check the receiving wallet on the selected network.
BTC Bridge fees and transfer time
A bridge transfer has separate Bitcoin, route and destination costs. Read them together with the amount your destination wallet receives.
Bitcoin network fee
Paid in BTC when you send the deposit. The fee rate is measured in sat/vB; the total also depends on transaction size. More wallet inputs can increase the cost.
Bridge and routing fee
The route can charge a fixed fee, a percentage, or both. Token conversion and liquidity costs also affect the receiving amount.
Destination settlement and gas
Check whether delivery costs are included in the route. Later transfers or DeFi transactions use the destination network's gas asset.
Bitcoin confirmation time
See how a route's required confirmations affect the Bitcoin part of the transfer.
3 confirmations × 10 minutes per block.
Bitcoin targets a 10-minute average block interval. Actual block times vary. Add deposit queueing, bridge processing and destination settlement to the confirmation time.
BTC Bridge security: what to check
A bridge adds a custody or signer model and destination contracts to a Bitcoin transfer. Evaluate the route alongside the token you will hold.
Reserve and redemption model
Understand who holds the underlying BTC, how reserves are tracked and how token holders redeem.
Token contract and network
Match the contract address to the selected chain. A familiar ticker alone is not enough to identify a token.
Deposit and receiving address
Check both addresses on your wallet screen. Use a small first transfer when setting up a new route.
Confirmation and transfer records
Keep the Bitcoin transaction ID and destination transaction hash. Use them to follow each stage of settlement.
BTC Bridge FAQ
Answers about Bitcoin transfers, wrapped assets, wallets and redemption.
What is BTC Bridge?
BTC Bridge connects native Bitcoin to other blockchains through Bitcoin-backed tokens. Choose a destination such as Ethereum, Base or Solana, review the route, and receive the selected token in your destination wallet.
How do I bridge BTC to Ethereum?
Select Ethereum, enter your BTC amount and receiving address, and review the token and transfer fees. Send BTC to the deposit address assigned to the transfer. After the required Bitcoin confirmations and bridge processing, the destination token arrives on Ethereum.
How long does a BTC bridge take?
The total time includes Bitcoin confirmations, bridge processing and destination settlement. Bitcoin targets one block every 10 minutes on average. Three required confirmations correspond to roughly 30 minutes of confirmation time; queueing and settlement add to that interval.
What fees do I pay to bridge Bitcoin?
Review three components: the Bitcoin transaction fee, the route fee and destination settlement costs. The Bitcoin fee depends on the transaction size and sat/vB fee rate. Route fees can be fixed or percentage-based. Keep the destination gas asset available for later transactions.
Is bridged BTC the same as native Bitcoin?
Native BTC exists on the Bitcoin blockchain. On another network, you hold a token representing bitcoin, such as WBTC, cbBTC, tBTC, BTCB or BTC.b. Each token has its own reserve, custody and redemption arrangements.
Can I bridge BTC back to Bitcoin?
Use a redemption route that accepts your token on its current network and pays native BTC to a Bitcoin address. Review the minimum amount, redemption fee and confirmation requirements before sending the token.
Which wallet do I need for BTC Bridge?
Use a Bitcoin wallet for the deposit and a wallet compatible with the destination network for receipt. Ethereum, Base, Arbitrum, BNB Chain, Optimism, Polygon and Avalanche C-Chain use EVM addresses. Solana uses a Solana address.
Why is my BTC bridge transfer still pending?
Check the Bitcoin transaction first. An unconfirmed deposit is waiting for inclusion in a block; a confirmed deposit may still need additional confirmations. Once the route reaches its required count, bridge processing and destination settlement follow. Keep the transfer ID and both transaction records available.
Bridge BTC to your chosen network
Choose a route and review your Bitcoin transfer in the app.