TON Bridges (rhino.fi, TON Bridge V2 by Symbiosis)

TL;DR – TON bridges allow users to move assets between TON and dozens of other blockchains. rhino.fi offers a universal bridge covering 30+ networks, while Symbiosis’s TON Bridge V2 provides a contract‑only solution supporting over 1,000 tokens across 34 chains and includes SDK integration for developers.

Overview of TON Bridges#

TON bridges are non‑custodial services that facilitate two‑way asset swaps between the TON network and external blockchains. They share three core advantages:

Decentralization – swaps occur without custodial intermediaries.
Security – both bridges have undergone independent audits.
Uninterrupted operation – continuous bidirectional exchanges across many networks.

rhino.fi Bridge#

rhino.fi is a universal cross‑chain bridge that connects TON with a broad set of external networks.

Key features

30+ supported networks – provides access to most major L1 and L2 chains.
User‑friendly interface – a minimalist UI designed for quick transactions.
Low transaction fees – inexpensive gas costs; users can top up TON gas via the built‑in Gas Boost feature.
Scalability claim – the service advertises the ability to process “millions of transactions per second”.

The bridge on TON launched on 25 September 2024. Promotional campaigns occasionally offer discounted or free cross‑chain swaps.

TON Bridge V2 by Symbiosis#

TON Bridge V2 is an upgraded, fully smart‑contract‑based bridge developed by Symbiosis Finance.

Distinguishing characteristics

Fully contract‑driven, non‑custodial architecture.
Bidirectional operation – supports both inbound and outbound transfers involving $TON and $USDT‑TON.
Broad token coverage – over 1,000 tokens across 34 networks (including Bitcoin, Tron, Ethereum, and various L2 solutions).
SDK integration – enables developers to embed cross‑chain swap functionality directly into wallets, DeFi protocols, or aggregators.

Security assessment

Symbiosis’s smart contracts were audited by Tokyo Security, which assigned a 97/100 security rating and classified the risk level as low.