> For the complete documentation index, see [llms.txt](https://gasyard-1.gitbook.io/gasyard/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gasyard-1.gitbook.io/gasyard/overview/publish-your-docs.md).

# Bridge System

### Transaction Flow

Gasyard enables seamless cross-chain transactions through a streamlined process:

1. **Deposit Phase:**

* User initiates a bridge transaction and deposits assets.
* Gateway Contract locks the assets and generates a unique Order ID.

2. **Settlement Phase:**

* Settlement Layer fetches real-time bids from solvers.
* Optimal bid is selected, and transaction details are broadcast.

3. **Execution Phase:**

* Solver executes the transaction on the destination chain.
* Unlocks and delivers funds to the user.

#### Features:

* Average transaction time: \~8.9 seconds.
* Supports atomic operations for secure fund transfers.
* Refunds available for incomplete transactions after a timeout period.

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### Supported Networks

Gasyard currently supports 12+ networks across EVM and non-EVM ecosystems.

* EVM Chains: Ethereum, Base, Optimism, Arbitrum, BNB Chain.
* Alt-VM Chains: Solana, Aptos, Sui, TON, Starknet.
* Future Integrations: Bitcoin, Celestia, Fuel.

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### Asset Types

* Supported Assets:  \
  Native tokens (e.g., ETH, SOL).\
  Stablecoins (e.g., USDT, USDC).

* Upcoming Support:\
  Wrapped assets.

  Cross-chain NFTs.

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### Fee Structure

* Platform Fee: Up to 0.25% per transaction.
* Solver Profit: Spread between input and output amounts.
* Refund Fee: 0%

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### Bridge Security

* Multi-Signature Verification: Ensures transaction integrity.
* Emergency Controls: Pausable contracts in case of critical issues.
* Reentrancy Protection: Guards against repeated execution vulnerabilities.
* Strict Input Validation: Prevents malformed or fraudulent transactions.

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