TON Architectural Chain (TAC) is a blockchain infrastructure project that connects Ethereum-compatible applications to the TON and Telegram ecosystems via an EVM-compatible Layer 1 network and a cross-chain communication framework. The project enables Solidity-based applications to interact with TON wallets, assets, and Telegram Mini Apps without requiring developers to rebuild applications for TON. ^[1]

Overview

TAC is an EVM-compatible Layer 1 blockchain designed to connect Ethereum-based decentralized applications with the TON and Telegram ecosystems. Built on Cosmos SDK and Ethermint, it enables developers to deploy Solidity smart contracts and provides interoperability with TON via a dedicated cross-chain messaging layer. Its architecture includes the TAC EVM Layer, the TON Adapter, and the TAC SDK, which together allow applications to interact with TON wallets, TON-native assets, and Telegram-based interfaces.

A core feature of TAC is its Hybrid dApp framework, which enables Ethereum-compatible applications to be accessed by TON users without requiring separate wallets, wrapped assets, or direct interaction with bridging infrastructure. Through development tools and support for Telegram Mini Apps, TAC provides a way for developers to integrate EVM-based functionality, including decentralized finance services such as asset swaps, lending, and yield-generating applications, into the TON and Telegram ecosystems. ^{[6] [8]}

Features

Hybrid dApps

Hybrid dApps are decentralized applications that combine Ethereum-compatible smart contract functionality with user interfaces and distribution channels built within the TON and Telegram ecosystems. Using TAC’s infrastructure, developers can deploy existing Solidity-based applications, enabling users to access them through TON wallets and Telegram Mini Apps. The underlying smart contract logic executes on TAC’s EVM-compatible Layer 1, while cross-chain communication is handled through the TON Adapter.

The Hybrid dApp model is designed to connect Ethereum-based decentralized finance and application infrastructure with Telegram-native user experiences. Through the TAC SDK, Telegram Mini Apps can interact with EVM smart contracts without requiring users to manage multiple wallets, switch networks, or use bridging mechanisms. This architecture enables applications such as token swaps, lending protocols, liquidity provision platforms, and other blockchain services to be accessed through familiar Telegram interfaces while leveraging TAC's security and execution environment. Examples of applications integrated through this framework include decentralized finance protocols such as Curve, Morpho, and Euler. Hybrid dApps also provide a pathway for interoperability between the TON ecosystem and Ethereum-based applications, allowing TON users to access EVM functionality while enabling Solidity developers to deploy applications without rebuilding them for TON’s native virtual machine. ^{[2] [4]}

Architecture

TAC is a Layer 1 blockchain architecture designed to enable interoperability between the TON ecosystem and Ethereum-compatible smart contracts. The protocol combines an EVM-compatible execution layer with a cross-chain communication framework that facilitates deterministic message passing and asset transfers between TON and TAC. Its architecture relies on standardized cross-chain messaging, decentralized sequencing, and on-chain verification to coordinate interactions across both networks while maintaining native user experiences on the TON side.

The architecture consists of several core components. The TAC EVM Layer, built with Cosmos SDK and Ethermint, provides a fully Ethereum-compatible execution environment that supports Solidity smart contracts, standard Ethereum development tools, EIP-1559 gas mechanics, and delegated proof-of-stake consensus. Cross-chain communication is managed through the TON Adapter, a set of smart contracts deployed on both networks that validate transactions, lock and manage assets, format messages, verify proofs, and prevent duplicate or invalid executions. A decentralized Sequencer Network monitors events across TON and TAC, aggregates them into Merkle trees, and submits transaction roots for consensus, while an Execution Layer assigns executors to process validated cross-chain messages and complete operations in a permissionless manner.

Applications integrated with TAC use a combination of the TAC SDK and standardized EVM proxy contracts. The SDK handles message construction and interaction with cross-chain infrastructure on TON, while proxy contracts on the TAC side receive validated messages and execute the corresponding smart contract calls. Together, these components provide a framework for deploying Hybrid dApps that allow TON users to interact with EVM-based applications through cross-chain messaging and asset management mechanisms. ^[8]

Tokenonmics

TAC is the native utility token of the TAC network and serves as the primary asset for transaction processing, network security, and governance. Issued as an ERC-20 token on the TAC EVM Layer, it is integrated into the protocol’s execution and consensus mechanisms and is used across the network’s core infrastructure. Within the protocol, TAC functions as the gas token for transactions executed on the TAC EVM Layer. It is also used in the network’s delegated proof-of-stake system, where validators stake tokens to help secure the blockchain and may face penalties for malicious behavior. In addition, staked TAC provides governance rights, allowing participants to vote on protocol upgrades, network parameters, and other ecosystem decisions. For users interacting through TON, the network can automatically convert transaction fees into TAC, allowing cross-chain operations to be processed without direct management of the token. ^{[5] [7]}

Partnerships

• Bemo
• TOP
• Bitscale
• Ankr
• Animoca
• Symbolic
• Primitive
• Mentat Group
• Hack VC
• Paper
• TON Ventures
• Spartan
• Karatage
• P2 Ventures
• CMT Digital