Bridge · Review
Active1Sec Review 2026: ICP to EVM Message-Passing Bridge
1Sec is a message-passing bridge linking the Internet Computer (ICP) with Ethereum, Base and Arbitrum. DefiLlama shows about $2.7 million in TVL, but no audits are listed and key details are unpublished.
By the DappsAtlas editorial team · Updated
DappsAtlas score
—/10
Not rated
Our verdict on 1sec
1Sec may suit users who need to move assets between ICP and EVM chains such as Ethereum, Base or Arbitrum and are comfortable with early-stage risk. Its main strength is that it covers this specific route with a message-passing design and about $2.7 million in TVL. The main caveat is the lack of verifiable detail: no audits are listed, fees and supported assets are not public, and the project is new. Start small and do your own checks.
Score breakdown
How 1sec scores
- Security
- 3.5/10
- Ease of use
- n/a
- Fees
- n/a
- Features
- 5.0/10
Scores run from 0 to 10 and are based only on facts we could verify. Where information was missing we mark the score n/a rather than guess.
What is 1sec?
1Sec is a bridge that connects the Internet Computer (ICP) with EVM chains. DefiLlama describes it as a message-passing bridge and tracks it on ICP, Ethereum, Base and Arbitrum. It has been listed since December 2025.
DefiLlama shows about $2.7 million in total value locked, a 0.9% rise over seven days, and no token. The project's X account is listed as 1SecBridge. No audits are listed.
The homepage could not be fetched, so this review relies on the DefiLlama entry. Searching the name mostly returns an unrelated video app called 1 Second Everyday, so make sure you reach the right site.
How 1sec works
A message-passing bridge moves value by sending verified messages between chains rather than relying only on a pool of wrapped tokens. When you deposit on one chain, a message tells the other chain to release or mint the matching asset. The security of the bridge depends on how those messages are verified.
Public sources only say that 1Sec connects ICP with EVM chains, tracked on ICP, Ethereum, Base and Arbitrum. The specific verification method, supported assets and any validator or canister design are not stated, so we cannot describe them.
As with any bridge, funds are held in contracts or canisters while the transfer completes. That makes the contract code and the messaging layer the main points of risk.
4 features
Key features
01
Message-passing design
DefiLlama describes 1Sec as a message-passing bridge between ICP and EVM chains, rather than a simple lock-and-mint wrapper.
02
ICP to EVM routes
Tracked on ICP, Ethereum, Base and Arbitrum, covering the Internet Computer and three major EVM networks.
03
Modest TVL
DefiLlama shows around $2.7 million in TVL, up 0.9% over seven days, so there is some deposited value but at modest scale.
04
No native token
DefiLlama shows no token for 1Sec, so using the bridge does not appear to involve a native governance or fee token.
Pros and cons
What we like
- Connects ICP with Ethereum, Base and Arbitrum, a route not every bridge offers.
- Message-passing design, as described by DefiLlama.
- About $2.7 million in TVL shows some real usage.
- No token, so no separate token to buy to use it.
Watch out for
- No audits are listed on DefiLlama, so the contract code has no public third-party review.
- Listed only since December 2025, so the track record is short.
- The homepage could not be fetched, so fees, limits, supported assets and security design are unconfirmed.
- Bridges are a frequent target for exploits, and message-passing designs add trust in the messaging layer.
- No token and little public information about the team or governance.
1sec fees
Fees are not published publicly available to us. The homepage could not be fetched and DefiLlama does not list fee data for 1Sec.
Users would normally see any bridge fee, spread and the gas cost on the source and destination chains in the bridge interface before confirming a transfer. Check the quote carefully, especially for small amounts.
Is 1sec safe?
DefiLlama lists zero audits for 1Sec. We found no information on custody, upgrade rights, validator or messaging security, or bug bounties. No incidents are mentioned, but the protocol is also new, listed only since December 2025.
Bridges hold pooled funds and have been among the most exploited parts of crypto. Only move what you can afford to lose, split large transfers, and verify the official site and contract addresses yourself.
6 steps
How to get started with 1sec
- 1
Confirm you are on the official 1Sec website and not an unrelated site with a similar name.
- 2
Check which assets and chains are supported before moving funds.
- 3
Read any available documentation on how messages are verified and who can pause or upgrade the system.
- 4
Set up a wallet that works on your source chain and one that works on the destination, such as an ICP-compatible wallet and an EVM wallet.
- 5
Start with a small test transfer and review the fee quote and expected time.
- 6
Verify the funds arrived on the destination chain before sending a larger amount.
Who 1sec is for
1Sec is for experienced users who want to bridge between the Internet Computer and EVM networks and can evaluate bridge risk themselves. It is a poor fit for anyone who needs audited, long-established infrastructure or large-value transfers.
1sec FAQs
What is 1Sec?
1Sec is a message-passing bridge between ICP (the Internet Computer) and EVM chains, according to DefiLlama. DefiLlama tracks it on ICP, Ethereum, Base and Arbitrum.
Is 1Sec safe to use?
The project does not say. DefiLlama lists no audits and the homepage could not be fetched, so there is no confirmed security review. Treat it as unaudited until you can verify otherwise.
Which chains does 1Sec support?
DefiLlama lists ICP, Ethereum, Base and Arbitrum. Supported tokens are not stated publicly, so check the app before moving funds.
What are the fees on 1Sec?
Fees are not stated publicly. Bridge users usually pay a protocol fee or spread plus network gas on both chains, and the quote should appear in the bridge interface before you confirm.
Does 1Sec have a token?
No. DefiLlama shows token=none, and no 1Sec token is named publicly.
Is 1Sec the same as the 1 Second Everyday app?
No. Public reporting for the name mostly show an unrelated video app called 1 Second Everyday, which has nothing to do with this bridge. Check that you are on the official site listed for this project.
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How we checked
Sources
Last updated . Spotted an error? Tell us and we will correct it.