> For the complete documentation index, see [llms.txt](https://docs.blockatm.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockatm.net/readme.md).

# README

BlockATM is the world's first decentralized payment protocol based on blockchain smart contract technology, providing businesses with a secure, self-custodial cryptocurrency payment solution.

## Core Value

{% hint style="info" %}
**Decentralized Self-Custody**: You have complete control over your assets. Funds are stored in smart contracts on the blockchain, and only your designated signature address can withdraw assets. BlockATM cannot access or control your funds.
{% endhint %}

| Feature                    | Description                                                               |
| -------------------------- | ------------------------------------------------------------------------- |
| 🔐 **Self-Custody**        | Smart contracts owned by enterprise, assets fully self-managed            |
| 🔗 **Permissionless**      | No amount limit, no time limit, no authorization required for withdrawals |
| 🌐 **Multi-Chain Support** | Supports TRON (TRC20), Ethereum (ERC20), Arbitrum (ARB20)                 |
| 💰 **Transparent Fees**    | Fixed fees, no hidden charges                                             |

## Products & Services

### Collection (Safepay)

Users pay to your smart contract by connecting their wallet or scanning a QR code, with funds directly transferred to your contract address.

[Learn about Safepay →](/collection/safepay.md)

### Payout (Batch Payout)

Batch payout cryptocurrency to users, supporting both balance mode and allowance mode.

[Learn about Batch Payout →](/payout/batch-payout.md)

## Quick Integration

| Integration Method | Best For                            | Integration Time |
| ------------------ | ----------------------------------- | ---------------- |
| **Widget SDK**     | Quick cashier integration           | 30 minutes       |
| **Open API**       | Deep customization, full features   | 2-4 hours        |
| **Webhook**        | Receive payment event notifications | 1 hour           |

[View integration options →](/widget-sdk/widget-sdk.md)

## Fee Structure

| Type                        | Fee               |
| --------------------------- | ----------------- |
| Smart Contract Creation     | 200 USD/contract  |
| Collection (Wallet Connect) | 2 USD/transaction |
| Collection (Scan Payment)   | 0.4%/transaction  |
| Payout                      | 1 USD/transaction |

[View detailed fees →](/collection/fees.md)

## Changelog

| Version | Date       | Description                          |
| ------- | ---------- | ------------------------------------ |
| V2.3.0  | 2026-01-13 | Launched allowance management mode   |
| V2.2.0  | 2025-10-15 | Support for Ethereum/Tron withdrawal |
| V2.1.0  | 2025-06-10 | Initial version                      |

[View complete changelog →](/changelog/changelog.md)

***

## Need Help?

* 💬 Telegram: <https://t.me/blockatm2023>
* 📧 Email: support\@blockatm
* 📖 [FAQ](/faq/faq.md)
* 🔧 [Integration Guide](/integration-guide/collect-guide.md)


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