> For the complete documentation index, see [llms.txt](https://2hot-dao.gitbook.io/2hotdao-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://2hot-dao.gitbook.io/2hotdao-docs/2hot-protocol/bridge.md).

# Bridge

{% hint style="info" %}
Cross-chain bridge will be able after the formed DAO.
{% endhint %}

## What is a crypto bridge?

A crypto bridge (also known as a cross-chain bridge) is a tool that gives you the power to transfer digital assets and information from one blockchain to another.

### Example

If person A has a USDT on the Ethereum network(as an ERC-20) token and wants to have it on the Polygon network, it can be done with the Bridge.\
\
If person B has ETH and wants to change it for BTC, without CEX (Centralized exchange) it can be done anonymously with 2HOT Bridge.

```javascript
//def sign(params):
  if isinstance(params, dict):
    parts = []
    for k in params:
      parts.append('%s=%s' % (k, params[k]))
    payload = '&'.join(parts)
  else:
    payload = params
  return hmac.new(
    key=YOUR_API_SECRET.encode(),
    msg=payload.encode(),
  digestmod=hashlib.sha256 ).hexdigest()
```

If true:

```javascript
"code": 0,
  "msg": "",
  "data":
      "code": "BTC",
      "coin": "BTC",
      "network": "BTC",
      "name": "Bitcoin",
      "recv": true,
      "send": true,
      "tag": null,
      "logo": "https://2hotdao.fi/assets/images/coins/svg/btc.svg",
      "color": "#f7931a",
      "priority": "5",
    },
    ...,
  ],
}
```

## Fixed vs Float Rate

<figure><img src="/files/9ew6INafczs7kNysJcuB" alt=""><figcaption><p>Fixed vs Float rates for the cross-chain bridge</p></figcaption></figure>


---

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