Overview
What is TAC
TAC bridges TON’s 1 billion users with EVM’s application ecosystem
TAC is an EVM for Telegram: a Layer 1 with a TON-specific CrossChain Layer that connects Ethereum dApps and developers with Telegram’s users without exposing users to bridges, extra wallets, or wrapped assets. TAC eliminates the gap between TON’s billion-user reach and EVM’s programmability through Hybrid dApps - EVM dApps natively accessible by any TON wallet holder.
Challenge: Reaching TON’s billion users requires rebuilding entire applications in FunC, TON’s native language.
TAC Solution: Deploy existing Solidity contracts as-is and make them accessible to TON users
Challenge: Limited access to DeFi, gaming, and other EVM applications that dominate the blockchain space.
TAC Solution: Use any EVM application directly from TON wallets without bridges or multiple wallets
Unlike traditional bridges that move assets between existing chains, TAC creates hybrid applications that natively serve both ecosystems. Users don’t “bridge to another chain”—they use applications that happen to run on EVM but feel completely native to TON.
This fundamental difference enables:
TAC creates a bridge between TON users and EVM applications
The Problem TAC Solves
For EVM Developers
Challenge: Reaching TON’s billion users requires rebuilding entire applications in FunC, TON’s native language.
TAC Solution: Deploy existing Solidity contracts as-is and make them accessible to TON users
For TON Users
Challenge: Limited access to DeFi, gaming, and other EVM applications that dominate the blockchain space.
TAC Solution: Use any EVM application directly from TON wallets without bridges or multiple wallets
How TAC Works
TAC operates through three core innovations that work together seamlessly:Layer 1 EVM Blockchain
Layer 1 EVM Blockchain
TAC EVM Layer is a CosmosSDK-based blockchain that runs unmodified Solidity contracts and achieves ≈2-second finality through dPoS. This means:
- Deploy existing Solidity contracts without modifications
- Use familiar tools like Hardhat, Remix, and MetaMask
- Built on proven Cosmos SDK with Tendermint consensus
- Secured by delegated Proof of Stake with economic incentives
- Future Enhancement: Babylon Bitcoin restaking for additional economic security
TON Adapter
TON Adapter
A distributed network of sequencers that securely routes messages between TON and TAC EVM:This isn’t a traditional bridge — it’s a purpose-built messaging system designed for hybrid applications.
- Validation: Sequencers verify all transactions and asset transfers
- Consensus: 3/5 sequencer consensus with BFT guarantees
- Security: Multiple validation layers prevent double-spending and fraud
- Epochs: Time-based processing ensures orderly message handling
Current Network Status: The sequencer network is currently distributed but not decentralized. Full decentralization is on the roadmap as the network matures.
Proxy Smart Contracts
Proxy Smart Contracts
Specialized contracts that make cross-chain interaction feel native:On TON: SDK handles proxy logic automatically
On EVM: Solidity contracts receive and process cross-chain messagesWhen a TON user interacts with an EVM app, proxy contracts handle all the complex routing, asset management, and message formatting behind the scenes.
On EVM: Solidity contracts receive and process cross-chain messagesWhen a TON user interacts with an EVM app, proxy contracts handle all the complex routing, asset management, and message formatting behind the scenes.
Key Benefits
Deploy Once, Reach Billions
- No code rewrites: Deploy existing Solidity contracts directly
- Familiar tooling: Use Hardhat, Truffle, Remix, and other EVM tools
- Hybrid dApp conversion: Every deployment becomes a Hybrid dApp accessible from TON
- Cross-chain SDK: Simple JavaScript library handles TON integration
- Telegram MiniApps: Bring EVM-powered logic directly inside Telegram
The world’s largest developer community meets the largest user base
Transaction Flow Example
Here’s what happens when a TON user swaps tokens on an EVM DEX through TAC’s hybrid dApp system:User Action
User opens a DEX interface and connects their TON wallet. They select tokens
to swap and approve the transaction.
Proxy Processing
The TON proxy locks user assets and creates a formatted message containing
swap parameters and destination details.
Sequencer Validation
Sequencer network validates the transaction, forms Merkle trees, and reaches
consensus across multiple groups.
Executor Selection & EVM Execution
A designated executor submits Merkle proofs to TAC EVM Layer, triggers asset
minting/unlocking, and executes the swap on the target DEX contract via proxy.
Result Delivery
Swap completes and new tokens are sent back to the user’s TON wallet through
the same secure process.
What Makes TAC Different
TAC is not a cross-chain workaround—it is a native execution path between
two ecosystems that were never meant to connect. By removing barriers instead
of building over them, TAC aligns UX, liquidity, and developer incentives.
- Seamless UX: No wallet switching or manual bridging
- Unified liquidity: Assets flow where they’re needed most
- Developer efficiency: Build once, serve both ecosystems
- Network effects: Growth in one ecosystem benefits the other