TON Bridge is a cross‑chain service that lets users move assets between Ethereum, BNB Smart Chain, and The Open Network. It uses a lock‑and‑mint architecture with smart contracts, relayers, and bridge nodes to ensure secure, transparent transfers.
Architecture#
Smart Contracts – lock assets on the source chain and trigger minting of equivalent wrapped tokens on the target chain.
Relayers – trusted intermediaries that validate and record each transfer.
Bridge Nodes – coordinate communication between relayers and smart contracts, preserving data integrity.
Wrapped Tokens – represent assets from one blockchain on another (e.g., Wrapped ETH on TON).
How it works#
- Asset locking – a user sends tokens to the bridge contract on the source chain, where they are locked.
- Minting wrapped tokens – the bridge creates an equivalent amount of wrapped tokens on the destination chain.
- Confirmation – relayers and bridge nodes verify the operation before finalizing the transfer.
- Asset unlocking – when moving assets back, the wrapped tokens are burned and the original assets are released on the source chain.
Fees#
- For arbitrary token transfers, the bridge fee is 1 TON and the user must also pay the native gas fee of the source blockchain (BNB on BNB Smart Chain, ETH on Ethereum).
- For native TON transfers, the fee is 5 TON plus 0.25 % of the transferred amount plus the source‑chain gas fee.
Links#
See also#
- The Open Network
- TON Bridges (rhino.fi, TON Bridge v2 by Symbiosis)
- Omniston
- Rainbow Swap