# NIP-100


## NOSTR Decentralized Advertising Network (NOSTR-DAN)
-------------------
`draf` `optional`

This NIP defines the `kind:20100`: a parameterized event dispatched to a listener or pool of listeners to offer space for advertising,
a listener can answer accepting the offer and contracting the space.

## Motivation
-------------------
Most of the digital social networks are based on data-driven advertising, then NOSTR-based applications can also
take competitive advantages learning it from industry to improve earnings in the NOSTR ecossystem.

## Problem
-------------------
Using the centralized adversting networking is staying in hand of the big companies.

## Solution
-------------------
The implementation of the NOSTR Decentralized Advertising Network (NOSTR-DAN) allows the NOSTR-based applications
implement features to display ads to the users and distribute ads to the pool of partners.

## Competitive Advantages for Stakeholders
-------------------
| stakeholder | advantage |
| ----------- | ----------|
| investors and entrepreuners | profitable feature |
| content creators | profitable feature |
| tech professionals | new profitable industry, new NOSTR-jobs |

## Properties

| Property | Help |
| ---------| ---------|
|`action` | `start-offer`, `assign-offer`, `paid`, `cancel-offer`|
| `offer` | offer identity {`pubkey`, `created_at`, `created_at`, `expires_at`,  `tags`, `description`}|
| `schema` | Accepted data schemas for the ad be displayed (example: https://schema.org/LocalBusiness), each pool can define your own custom schema |
| `schemaName` | What schema is being used to structure the ad |
|`cluster`| Marketing parameters about the audience cluster that will see the ad |
| `transaction`| Conditions to contract and pay the offer |
| `whitelist` | List of wallets that can contract and pay for this offer |
| `bannedlist` | List of wallets that CANNOT contract this offer |


## Schemas

The concept of schema is based on the https://schema.org/LocalBusiness to offer more freedom to pools and communities decide how to delivery your ads, because ads can have custom properties according to the industry and products/services evolutions.

## Example of usage

- The client dispatch the event to the pool offering space to advertisers
- The listeners (advertisers) understand the event and decide if contract or not the space

### Dispatched Event (Request Body)

The application send an event offering space to advertisers

```json
{
"kind": 20100,
"action": "start-offer",
"schema": [env.POOL.SCHEMA],
"offer": {
  "pubkey": env.MYPUBKEY,
  "created_at": 1704012878,
  "expires_at": 1704016478,
  "tag": env.TAG,
  "description": "Announce your ecommerce on www.example.com"
},
"cluster":
  {
    "userAgent": env.WEBBROWSER.DESKTOP.[FIREFOX | CHROME | EDGE | ...],
    "country": env.COUNTRY,
  },
"transaction":
  {
    "paymentModel": "prepaid",
    "price":
      {
        "btc": {
            "min": 0.0001
          },
        "eth": {
            "min": 0.001
          }
      },
    "conditions":
      {
        "maxViews": 100,
        "maxHours": 24,
        "formats": ["image/png,jpg,gif", "text/html,plain", ...]
        ...another properties about the conditions (specified by Schema)
      }
  },
  "whitelist":[env.LISTERNER.wallet.address],
  "bannedlist":[env.LISTERNER.wallet.wallet.address]
}
```

### Listener contracted the space to display ad

The advertiser (listener) decided to contract the space to display the ad,
then answer with:

```json
{
  "kind": 20100,
  "action": "assign-offer",
  "assign_at": "1704012879",
  "cancel_at": "1704012880",
  "offer": {
    "pubkey": env.PUBKEY,
    "created_at": 1704012878,
    "expires_at": 1704016478,
    "tag": env.TAG
  },
  "transaction": {
    "currency": "btc",
    "amount": 0.0001,
    "wallet": env.MYWALLET.address
  },
  "schema":{
    "schemaName": env.POOL.SCHEMA,
    "properties": {
      "format": "text/html",
      "content": "",
      ...custom community schema of properties (specified by Schema)

    }
    
  }
}
```

### Client accepts contract and answer with wallet

```json
{
  "kind": 20100,
  "action": "assign-offer",
  "assign_at": "1704012879",
  "cancel_at": "1704012880",
  "offer": {
    "pubkey": env.PUBKEY,
    "created_at": 1704012878,
    "expires_at": 1704016478,
    "tag": env.TAG
  },
  "transaction": {
    "wallet": env.MYWALLET.address
  },
}
```

### Listener (Advertiser) announces payment
```json
{
  "kind": 20100,
  "action": "paid",
  "paid_at": "1704012879",
  "offer": {
    "pubkey": env.PUBKEY,
    "created_at": 1704012878,
    "expires_at": 1704016478,
    "tag": env.TAG
  },
  "transaction": {
    "wallet": env.MYWALLET.address
  },
}
```

## REVIEW

- NOSTR-DAN needs only to members to work:
  - The client that offers spaces to the advertisers
  - The listeners (advertisers) that contract the spaces to advertise
- NOSTR-DAN community can create custom schemas for your ads, allowing the dynamic communication required by competitive industries and unpredictable market changes
- Members of the NOSTR-DAN can apply the whitelist and bannedlist to filter ads