# Quickstart

Welcome to *ONCHAIN®* — the access layer for the internet of value.

This Quickstart shows you how to embed instant, on-chain access using a single link: the Universal Access Schema.

You can integrate ONCHAIN® in under 30 seconds.

***

### 1. The One Link You Need

Every on-chain asset becomes reachable through a simple format:

```
https://buy.onchain.money/[chain]/[token]
```

Example (Ethereum token):

```
https://buy.onchain.money/ethereum/0xabc123...
```

Example (Base token):

```
https://buy.onchain.money/base/0x1234abcd...
```

Paste it anywhere a user can click — it “just works.”

***

### 2. Where You Can Use It

Anywhere links can be placed, the schema works:

* Token websites
* Wallets
* Telegram bots
* Discord bots
* Explorers (Etherscan, Basescan, etc.)
* NFT marketplaces
* Portfolio trackers
* Launchpads
* Community dashboards
* CEX → DeFi off-ramps (“Withdraw to token”)

> No API keys.\
> No SDK.\
> No backend.

***

### 3. Minimal Integration Example

Button example for any website:

```
<a href="https://buy.onchain.money/polygon/0xabc123">Buy with ONCHAIN</a>
```

Telegram bot example (pseudo-logic):

```
"Buy now → https://buy.onchain.money/" + chain + "/" + contract
```

That’s it.

***

### 4. Supported Chains

| Chain     | Slug     | Status    |
| --------- | -------- | --------- |
| Ethereum  | ethereum | Supported |
| Base      | base     | Supported |
| BNB Chain | bnbchain | Supported |
| Polygon   | polygon  | Supported |
| Solana    | solana   | Imminent  |

To request support for your EVM chain:

📩 <chains@onchain.money>

***

### 5. What Happens Behind the Scenes

1. User opens the link
2. ONCHAIN® Gateway loads token + chain
3. User pays (card, Apple Pay, Google Pay, crypto)
4. Payment is verified
5. Gateway broadcasts a BuyIntent
6. OPN executes it natively — no bridges, no custody
7. Tokens arrive in the user wallet

> A single click → fully on-chain settlement.

***

### 6. Next Steps

To go deeper:

* Learn how to embed the schema → Integrating the UAS
* Understand safety checks → Smart Guardrails
* Explore the execution layer → OPN (The ONCHAIN® Protocol Network)
* Try the live interface → onchain.money