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.

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

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

The EVM layer handles all application logic and state, while the TON Adapter manages cross-chain communication.

TON Adapter

A distributed network of sequencers that securely routes messages between TON and TAC EVM:

• 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.

This isn’t a traditional bridge — it’s a purpose-built messaging system designed for hybrid applications.

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 messages

When 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

For Developers

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

For Users

Native TON Experience

• One wallet: Use your TON wallet for everything
• No bridges: Assets move automatically behind the scenes
• Familiar UX: Apps feel native to TON environment
• Telegram integration: Access apps directly through Telegram Mini Apps

TON users get access to DeFi, gaming, NFTs, and more without learning new workflows

For Ecosystem

Unified Liquidity - Cross-chain composability:

TON and EVM applications can interact

• Shared liquidity: Tokens flow freely between ecosystems
• Network effects: More users attract more developers and vice versa
• Innovation acceleration: Best of both worlds drives faster development

Transaction Flow Example

Here’s what happens when a TON user swaps tokens on an EVM DEX through TAC’s hybrid dApp system (like Curve):

1. User Intent

   User opens a DEX interface, connects his/her TON wallet, and selects tokens to swap.

2. TAC SDK encoding

   The TAC SDK implemented within DEX frontend conveniently encodes required EVM calldata for the upcoming swap on the TAC blockchain and brings up the prepared transaction for user to approve.

3. User Action

   User approves the transaction.

4. TON Adapter Locking

   The TON adapter receives user’s assets and safely locks them on TON.

5. Sequencer Validation & Consensus

   Sequencer network finds and validates the transaction, forms Merkle trees, reaches consensus across multiple groups, and selects the executor. The final decision in set within the TAC blockchain.

6. EVM Execution

   A designated executor scans and finds the transaction to execute, validates its Merkle proof, triggers asset minting/unlocking, and calls the swap on the target DEX contract on TAC.

7. Result Delivery

   Swap completes and new tokens are sent back to the user’s TON wallet through the similar 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.

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:

• 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