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

# Overview

### Send Finance is a zkBridge

[Send Finance](https://send.finance/transfer) is a zkBridge for interchain token transfer. We want to apply the zero-knowledge bridge architecture to solve the chains' interoperability problems. 

Send Finance aims to create a seamless, faster, and safer token transfer process based on a reliable mechanism design, facilitating liquidity providers' higher APY. We are looking forward to your participation in supplying liquidity in pools.

#### Trustless and Secure

Send Finance as a zkBridge is trustless and secure. \
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Send Finance enables users to send tokens between chains by zkBridge API provided by Way Network.

The figure below shows the workflow of zkBridge:

<figure><img src="/files/K1AZda4eUdFlvUHLZxKA" alt=""><figcaption><p>zkBridge</p></figcaption></figure>

#### Completeness and Soundness&#x20;

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We present zkBridge to enable an efficient cross-chain bridge without trusting a centralized committee. The completeness and soundness of Way Network zkSpark ensure the safety of zkBridge. Therefore, we do not need any trusted third party to transmit, prove and verify cross-chain information, but through pure cryptography and mathematics to guarantee its legitimacy. <br>

<figure><img src="/files/2AG7rtbCqK17qeGfPzuA" alt=""><figcaption><p>zkSpark Sum-check Protocol</p></figcaption></figure>