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How to bridge to BOB
Jul 31, 20263 min read

How to bridge to BOB

Bridge to BOB (Build on Bitcoin), a hybrid layer 2, from any chain and any token, with the cheapest route chosen automatically.

Bridge to BOB

TL;DR

  • Bridge to BOB from any chain and any token, all in one flow.
  • Sweep compares Relay, Across, Mayan, Symbiosis and others, routing through whichever gives the best rate.
  • No account and no centralized exchange. Your funds stay in your wallet the whole way.
  • Sweep many balances together instead of bridging each one by hand.

What is BOB?

BOB — short for Build on Bitcoin — is a hybrid Ethereum layer 2 that brings DeFi and EVM tooling to the Bitcoin ecosystem, pairing Ethereum settlement with Bitcoin security. It uses ETH for gas.

Sweep pulls your balances from across chains and delivers the token you want on BOB, without touching a centralized exchange.

BOB at a glance

Chain ID
60808
Native token
ETH
Block explorer
BOB Explorer
Routes via
Relay, Across, Mayan, Symbiosis and others

How to bridge to BOB with Sweep

  1. 1

    Open the Sweep app and connect your wallet.

  2. 2

    Select the tokens you're starting from, on any chains.

    From
    • 0.42$1,240ETH
    • 260$260USDC
    • 180$180USDT
    To0xd6…e3ef
    1,500$1,500
    USDCon BOB
    Sweep
    Pick what you're sending and the token you want on BOB.
  3. 3

    Set BOB as the destination and pick the token you want to land in.

    Open the network list, choose BOB, then pick the output token: a stablecoin like USDC, the native token, or anything BOB supports. You can even split the result into two tokens. As soon as it's set, Sweep quotes the amount you'll receive on BOB.

    Select tokens

    Search for a token or paste address…

    BOB

    3 assets

    USDC

    USD Coin

    1,204

    $1,204

    ETH

    Ether

    0.63

    $1,860

    USDT

    Tether USD

    540

    $540

    Choose BOB from the network list as your destination.
  4. 4

    Review the route Sweep found and approve it in your wallet.

    Sweep compares Relay, Across, Mayan, Symbiosis and others in real time and picks the cheapest, fastest path, showing the exact amount that will arrive on BOB and the fee before you sign. Assets sitting on the same chain are batched into a single signature, so you're not approving one transaction per token. Confirm, and your funds land on BOB — you can follow every leg in the app's history.

How much does it cost to bridge to BOB?

Two things make up the cost: the gas on the network you're sending from, and the routing provider's fee. Sweep compares its providers in real time and shows exactly what will arrive on BOB before you confirm, so there's nothing hidden.

There's no account, subscription or extra Sweep charge to use it. Because Sweep routes through whichever path is cheapest, you keep more than you would sending through a single bridge.

Why bridge with Sweep

  • Best rate, automatically. Sweep quotes Relay, Across, Mayan, Symbiosis and others, routing through the cheapest path to BOB.
  • Many tokens, one flow. Consolidate scattered balances across chains into the token you want on BOB instead of bridging each one by hand. Assets on the same chain are batched into a single signature.
  • You stay in control. Funds move directly through the providers, and Sweep never holds your assets.
  • No guesswork. You see exactly what lands on BOB before you approve anything.

Bridging out of BOB

Leaving BOB works the same way in reverse. Open Sweep, select your tokens on BOB, choose the chain and token you want to end up with, and approve it in your wallet. Your assets move straight through the providers and never sit with Sweep.

Frequently asked questions

Most transfers to BOB settle within seconds to a couple of minutes, depending on network conditions. Sweep automatically picks the fastest available route across its providers.

You pay the source network's gas plus the routing provider's fee. Sweep compares Relay, Across, Mayan, Symbiosis and others in real time and shows exactly what you'll receive on BOB before you confirm.

No. Sweep needs no account and never takes custody of your funds. You connect your own wallet, and everything moves directly through audited routing providers.

Yes. That's the point of Sweep. You can consolidate scattered balances across several chains into one destination token on BOB, instead of bridging each one by hand. Assets on the same chain are batched into a single signature.

Sweep routes through audited providers and never takes custody of your assets, so your funds move straight from your wallet to BOB. You approve every transaction yourself and can see the expected result before you sign.

You can start from almost any token on any supported chain and receive the token you choose on BOB. Sweep handles the swaps and the bridging in the same flow, so you don't need to hold a specific asset first.

The same way, in reverse. Open Sweep, select your tokens on BOB, choose the chain and token you want to end up with, and approve it in your wallet.

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Written by the Sweep team.