Bridge · Review
ActiveTAC Cross Chain Layer Review 2026: Bridging TON to EVM dApps
TAC Cross Chain Layer is the messaging and custody layer that links TON with the TAC EVM chain, locking native TON assets and minting wrapped versions for Telegram miniapps. Its pitch is clear, but the security incidents on its blog and the lack of published audits call for caution.
By the DappsAtlas editorial team · Updated
DappsAtlas score
5.8/10
Mixed
Our verdict on TAC Cross Chain Layer
5.8/10TAC Cross Chain Layer suits users and developers who want EVM DeFi inside the TON and Telegram ecosystem and accept early-stage bridge risk. Its main strength is a clear lock-and-mint design backed by Solidity compatibility and a live mainnet. The main caveat is security: the blog lists post-mortems for a bridge incident and a Cosmos EVM exploit, no audits are listed, and fees are not published. Read the incident reports first and start small.
Score breakdown
How TAC Cross Chain Layer scores
- Security
- 4.5/10
- Ease of use
- 6.5/10
- Fees
- n/a
- Features
- 6.5/10
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 TAC Cross Chain Layer?
TAC Cross Chain Layer is the bridge and messaging component of TAC, a blockchain designed so EVM dApps can reach TON and the Telegram user base. It locks native TON assets in custody and mints wrapped tokens for use in TAC miniapps.
The project's homepage says mainnet is live, and its blog dates the mainnet launch to July 2025. The tracking data lists the bridge since late August 2025 and shows about 1.36 million USD locked, with TON as its chain. The same blog reports an 11.5 million USD raise, including a 5 million USD strategic round led by Hack VC, and the homepage credits Bemo and TOP as founders.
The homepage also lists post-mortem reports for two security incidents: one affecting the TAC Bridge and one a Cosmos EVM exploit on TAC. Anyone considering the bridge should read both.
How TAC Cross Chain Layer works
TAC is an EVM-compatible chain built to give Ethereum-style apps access to TON and Telegram. The Cross Chain Layer is the part that connects the two networks. It passes messages between TON and the TAC EVM chain and holds assets in custody.
When a user moves a native TON asset in, the asset is locked on the TON side and a wrapped token is minted on TAC. That wrapped token can then be used in EVM applications and TAC miniapps. When the user moves out, the wrapped token is burned and the locked asset is released. The security of the wrapped token depends on the custody layer holding the original.
The messaging side lets an app on TAC respond to actions started from TON, which is how the project describes Hybrid dApps: EVM logic with a TON and Telegram front end.
7 features
Key features
01
Lock-and-mint custody
Native TON assets are locked in a custody layer and wrapped tokens are minted on TAC, so they can be used in EVM applications.
02
Cross-chain messaging
A messaging layer passes instructions between TON and the TAC EVM chain, letting an EVM app react to actions started on TON.
03
EVM compatibility
Developers can deploy Solidity code as-is on the TAC EVM layer without rewriting it.
04
Telegram miniapp access
Hybrid dApps combine EVM logic with TON user experience and are delivered through Telegram miniapps.
05
DeFi partners
The homepage names Euler and Curve among the DeFi applications spotlighted on the network, and says mainnet launched with pre-committed liquidity.
06
Token and governance plans
The homepage describes a $TAC token with staking and yield options, and a roadmap that includes a governance framework.
07
Bug bounty program
A bug bounty link and a whitepaper are listed on the homepage.
Pros and cons
What we like
- Clear purpose: connects TON assets to an EVM chain so Solidity code can run unchanged.
- Provides a route into Telegram miniapps for EVM developers.
- Mainnet is live, with named DeFi partners such as Euler and Curve featured on the project's blog.
- Publishes post-mortem reports on incidents rather than staying silent.
- Links a whitepaper, documentation and a bug bounty program.
Watch out for
- Two post-mortem reports on security incidents (one on the TAC Bridge, one on a Cosmos EVM exploit) appear on the project's blog, so the infrastructure has a record of problems.
- No third-party audits are listed in the tracking data; the project does not publish audit reports on its homepage, only a bug bounty link.
- Wrapped tokens depend on the custody layer holding the locked TON assets, which adds bridge and custody risk.
- Fee levels for bridging and for using the network are not published on the homepage.
- Value locked is modest, at about 1.36 million USD, and the project is still early in its roadmap.
- Adoption depends on Telegram and TON, so the project's fortunes are tied to one ecosystem.
TAC Cross Chain Layer fees
The homepage does not publish a fee schedule for bridging or for using the network. Users would see the actual amounts in the bridging interface and in the wallet confirmation before approving a transfer.
As with most bridges, expect network costs on the TON side and gas on the TAC EVM side. The project does not state whether it charges an additional protocol fee on transfers.
Is TAC Cross Chain Layer safe?
The bridge works by holding locked TON assets in custody while wrapped tokens circulate on TAC. If the custody layer or the messaging logic fails, the wrapped tokens can lose their backing. That is a core risk for any lock-and-mint bridge.
The project's blog lists post-mortem reports for a security incident affecting the TAC Bridge and for a Cosmos EVM exploit on TAC. The tracking data lists no audits for the bridge, and the project does not publish audit reports on its homepage. A bug bounty link is provided. Read the post-mortems, check current audit status in the documentation, and bridge only what you can afford to lose.
6 steps
How to get started with TAC Cross Chain Layer
- 1
Read the project documentation and the post-mortem reports on the blog to understand the architecture and past incidents.
- 2
Set up a TON-compatible wallet and fund it with the TON assets you plan to use.
- 3
Use the official bridging page linked from the TAC homepage to move assets to TAC, starting with a small test amount.
- 4
Add the TAC EVM network to an EVM wallet if you plan to interact with EVM dApps directly.
- 5
Explore the TAC Network directory for hybrid dApps and check each protocol's own risks before depositing.
- 6
Bridge back to TON when finished, and verify the transfer completes before moving larger amounts.
Who TAC Cross Chain Layer is for
This is aimed at TON holders who want to use EVM DeFi applications, and at Ethereum developers who want to deploy Solidity code and reach Telegram users. It is less suited to users who need a long, audited security record before moving funds.
TAC Cross Chain Layer FAQs
What is TAC Cross Chain Layer?
It is the messaging and custody layer between TON and the TAC EVM chain. It locks native TON assets and mints wrapped tokens that can be used in TAC miniapps and EVM dApps.
How does bridging between TON and TAC work?
Assets are locked on the TON side and a wrapped representation is minted on TAC. Moving back reverses the process. Users interact with this through TAC's bridging flow, which the project describes as the first step to using the network.
Does TAC have a token?
The homepage describes a native token called $TAC, with staking and yield options. The tracking data does not list a token for the bridge layer itself, and the project does not publish a separate bridge token.
Has TAC been hacked?
The project's blog lists post-mortem reports for a security incident affecting the TAC Bridge and for a Cosmos EVM exploit on TAC. Read both reports for details on what happened and how funds were handled before moving significant value.
Is TAC Cross Chain Layer audited?
The tracking data lists no audits, and the homepage does not show audit reports. It does link to a bug bounty program and a whitepaper. Check the documentation for current audit status.
What does it cost to use?
The homepage does not publish bridging fees. Users should expect TON network costs and any EVM-side gas, and should check the amounts shown in the bridging interface before confirming.
Who can build on TAC?
The homepage says Solidity code can be deployed as-is on the TAC EVM layer, with no rewrite. The app can then be reached through Telegram miniapps and TON.
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How we checked
Sources
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