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Current Network Status: The sequencer network is currently distributed but not decentralized. Full decentralization is on the roadmap as the network matures.
The TON Adapter is the cross-chain messaging backbone of TAC, enabling secure communication between TON and TAC EVM Layer. Unlike traditional bridges that simply move assets, the TON Adapter is designed specifically for application-level interactions, allowing TON users to execute complex operations on EVM smart contracts seamlessly. TON Adapter is tied to the specific set of contracts on both TON and TAC EVM chains to perform its duty.

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Core Functions

The TON Adapter handles the following operations:

Message Operations

  • Transaction execution coordination
  • TON and TAC EVM calls
  • Value routing

Consensus Operations

  • Merkle tree formation
  • Multi-group validation
  • Economic security enforcement

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Sequencer Network Architecture

Individual Sequencers

Each sequencer monitors both TON and TAC EVM for relevant events, maintaining local databases of transactions and forming independent Merkle trees.

Sequencer Groups

Sequencers organize into groups that must reach 3/5 internal consensus. Each group validates transactions independently and stakes collateral as security.

Network Consensus

Multiple groups must submit identical Merkle trees to achieve network-wide consensus. This creates multiple validation layers for maximum security.

Execution

Once consensus is reached, transactions execute on the target chain with cryptographic proof of validity.

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Asset Management

The TON Adapter handles two primary types of asset operations as tokens move between chains.

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Lock and Mint Operations

When assets need to be moved from one chain to another, the TON Adapter uses a lock-and-mint mechanism:
  • Asset Locking: Tokens are locked on their native chain to prevent double-spending while preserving the original asset.
  • Metadata Capture: The system records key token details, including the name, symbol, decimals, and the original contract address.
  • Token Deployment: If the token is crossing chains for the first time, the system automatically deploys the corresponding ERC-20 contract on TAC EVM and Jetton contract on TON.
  • Token Minting: An equivalent amount of tokens is minted on the destination chain to keep supply consistent across both networks.

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Burn and Release Operations

When assets move back, the reverse flow applies:
  • Asset Burning: ERC-20/Jetton tokens are burned, removing them from circulation on a particular chain.
  • Validation: Sequencers verify the burn.
  • Asset Release: The previously locked tokens are released.

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Failure Protection

  • Automatic Rollbacks: If a transaction fails on the target chain, assets are automatically returned to the sender.
  • Failed Transaction Collection: Failed transactions are processed through the same consensus mechanism to ensure proper resolution.

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Performance Characteristics

The TON Adapter is designed to balance security with reasonable performance for application-level interactions.
Cross-chain transactions typically complete within 1-3 minutes. The exact timing depends on the number of sequencer groups participating in consensus and the current cross-chain activity.