Manta Bridge.

Manta Bridge is the deposit and withdrawal path that moves ETH, stablecoins and other assets between Ethereum and the two Manta networks — Manta Pacific and Manta Atlantic. On a deposit, a contract on Ethereum holds the asset while the matching balance appears on the destination chain within minutes; on a withdrawal, the asset is released back on Ethereum once the destination chain's exit window has passed. Because each transfer is a smart-contract interaction rather than a custodial transfer, the wallet signing the transaction keeps control of the asset throughout.

Manta Pacific and Manta Atlantic, briefly

Manta Pacific is the project's general-purpose modular execution layer, built to run ordinary EVM contracts while keeping data costs low. Manta Atlantic is a separate zk-focused chain for privacy-preserving zkApps, where proofs rather than raw data establish correctness. A deposit can target either network depending on what you plan to do once you arrive.

Which assets move across

ETH and widely used stablecoins such as USDC and USDT make up most deposits, and the canonical route also supports a growing list of ERC-20 tokens listed in Manta's documentation. Whatever you send keeps its identity on arrival, so a bridged stablecoin remains that same stablecoin and can be sent back through the same path later.

Choosing a destination matters because Manta Pacific and Manta Atlantic serve different purposes, and the route you take should match what you intend to do next.

Why Manta Pacific uses Celestia for data

Manta Pacific is a modular rollup: execution happens on its own layer, but the record of every transaction is published to Celestia rather than stored as calldata on Ethereum. Posting data is usually the largest expense a rollup carries, so moving it to a chain built for that job — tracked independently on L2BEAT — is what keeps everyday activity on Manta Pacific inexpensive even during busy periods. This sets Manta Pacific apart from a rollup that still posts its full data back to Ethereum.

Manta Atlantic and zero-knowledge privacy

Manta Atlantic exists for applications that need to prove a fact about a transaction without revealing its details, using zero-knowledge proofs to let a zkApp verify correctness while keeping inputs private. A deposit to Atlantic still happens on-chain in the open; the privacy applies to what you do with the asset afterward, inside the apps built on that chain.

A Manta Bridge deposit costs Ethereum gas to run the transaction plus a small protocol fee; once the asset lands on Manta Pacific or Manta Atlantic, further activity is cheap because of the Celestia data-availability design. The two directions are not symmetric — withdrawals take longer than deposits because the network waits out a challenge period before releasing funds on Ethereum.

Direction	What you pay	Typical time
Deposit to Manta	Ethereum gas + protocol fee	Minutes after confirmations
Activity on Manta Pacific / Atlantic	Low network gas	Seconds
Withdrawal to Ethereum	Network gas, then Ethereum gas to finalize	Hours, through the exit window

Reading the amount that actually arrives

Each quote in the interface separates the fee from the amount credited on the destination chain, so judge any route by that final figure rather than the advertised rate. Small transfers are hit hardest by fixed Ethereum gas, so grouping a few planned moves into one larger deposit usually gets more value across for the same cost. You can confirm what landed by checking the destination address on the Manta Pacific explorer.

The sequence for a Manta Bridge transfer stays the same whether the destination is Manta Pacific or Manta Atlantic.

• Open the bridge interface and pick Ethereum as the source network.
• Select Manta Pacific or Manta Atlantic as the destination and enter the amount.
• Approve the token contract if needed, then sign the deposit transaction in your wallet.
• Wait for Ethereum confirmations; the balance appears on the destination chain minutes later.
• To return assets, start a withdrawal on the destination chain, wait out the exit window, then claim on Ethereum.

Why the return trip takes longer

A deposit only needs Ethereum to confirm one transaction, which takes minutes. A withdrawal has to wait for Manta Pacific or Manta Atlantic to finalize the relevant state on Ethereum before releasing funds, a security delay rather than a technical slowdown, and it is the main reason the exit leg is measured in hours.

A deposit to Manta Atlantic does not itself hide anything — the transaction is visible on Ethereum like any other — but it is the entry point into an environment where the apps on the other side can shield activity afterward, while Manta Pacific focuses on ordinary smart contracts at low cost.

What zk privacy changes, and what it doesn't

A zkApp on Manta Atlantic can prove a statement — that a balance is sufficient, that a trade meets a rule — without publishing the underlying numbers, verified through cryptographic proofs rather than open data. It does not make the bridge transaction itself private, and it does not substitute for careful handling of your own keys; the privacy lives in the application layer you reach after the transfer completes.

A canonical Manta Bridge transaction is a direct contract call you sign yourself, and the asset is never placed with a custodian. The practical risks sit at the point of signing: confirm the destination network, check the contract address of the asset you expect to receive, and read what the approval actually grants before confirming it.

Keep approvals narrow

Grant a token allowance sized to what you are actually moving rather than an open-ended amount, and clear out old allowances on a wallet you no longer use for bridging. A smaller set of live approvals leaves less for any single compromised contract to reach.

Signing is the only thing it ever asks for

Every legitimate step consists of signing a transaction you can inspect in your wallet before approving it. Nothing about this deposit or withdrawal requires typing a recovery phrase into a website, and any page or message that asks for one is outside the real flow entirely.

The canonical route mints the official representation of an asset and is the reference path for most transfers, especially larger ones held for a while. Third-party liquidity bridges can sometimes complete a withdrawal faster because they front funds instead of waiting out the exit window, but that convenience comes with its own fee and its own counterparty to trust. For a first transfer, or for any amount you intend to leave on Manta Pacific or Manta Atlantic for more than a few days, the documentation at docs.manta.network describes the canonical route that this guide follows.