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

# ZAP CONTRACTS

Introductions of  Zap Contracts

### [Check out full documentation ](http://tech.zap.org/docs/overview.html)

### Introduction

Zap contracts consists of 4 main contracts :

* **Registry Contract** : 
  * For Data/Service provider, faciliate creating/managing Oracles and Endpoints, data about Oracles will be stored and viewed publicly 
* **Bondage Contract** : 
  * Allow user to bond/unbond to Oracles, users can bond ZAP tokens to gain dots or unbond dots to get ZAP tokens back, all through Bondage contract.
  * Holds Dots in escrow during subscriptions periods or pending queries
    * **Dots**: Endpoint specific access tokens, dots can be redeemable as:
      * Query requests (1 dot = 1 query)
      * Subscription periods (1 dot = 1 block time)
      * An amount of Zap Tokens determined by Endpoint-specific bond market price
* **Dispatch Contract** : 
  *  handle delivery of query from users and responses from data provider's Oracle
* **Arbiter Contract**: 
  * handle subscriptions activity, including start, end, information about subscriptions.

Below is how Zap Contracts are interact with each others and with Users/Data Providers 

![Zap Contracts Interaction](https://1587561480-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LZfJHix_Ia6ja0KtINp%2F-L_Je2cBzAZ8Q0KIdGwv%2F-L_JeFlUS5Pc1SlRW9vt%2Fzapflow.png?alt=media\&token=5508e2f3-924f-47b0-83c3-963631fef2d5)

### Mainnet Addresses:

* Coordinator: `0xb007eca49763f31edff95623ed6c23c8c1924a16`
* Registry: `0xc7ab7ffc4fc2f3c75ffb621f574d4b9c861330f0`
* Dispatch: `0xac0f9620c5940085eb5f3a07210d890aa4ceee11`
* Bondage: `0x188f79b0a8edc10ad53285c47c3feaa0d2716e83`
* Arbiter: `0x131e22ae3e90f0eeb1fb739eaa62ea0290c3fbe1`

### Kovan Addresses

* Coordinator: `0x0014f9acd4f4ad4ac65fec3dcee75736fd0a0230`
* Registry: `0x321C850Bf38B96a942bED941A3E95E0b8DdC1F8E`
* Dispatch: `0x6b6afd3fc0a7f47d48f9c5fc13375a40e70bbbd3`
* Bondage: `0xffdff0c05d5566c50307dcbdc63b45e2e24a095d`
* Arbiter: `0xf448c11f18a9aabaa8940a4641cae2e9fbe9ebd7`