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Telegram bot-crypto wallet + exchanger

Cryptocurrency & Blockchain — incorrectly specified categories?

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Technical Specification (TS) — Telegram bot with hot wallet and built-in exchange

1. Project Goal

Create a Telegram bot that allows users to:

Top up their balance with cryptocurrencies (BTC, ETH, TRON, USDT, and other tokens).
Track their balance in real-time.
Withdraw funds to external addresses.
Ensure the security of funds using hot wallet + cold wallet.
Exchange currencies within the bot at its own rate (virtually).

2. Supported Currencies

BTC (BIP-44, coin_type = 0)
LTC (BIP-44, coin_type = 2)
ETH/ERC-20 tokens (coin_type = 60)
BNB/BEP-20 tokens (coin_type = 60 / BSC network)
TRX/TRC-20 tokens (coin_type = 195)
Optionally: USDC ERC-20, DAI, other popular tokens

3. System Architecture

[Telegram bot]
      |
      v
[Application server]
      |
      +--> [HD Wallet (for all currencies)]
      |       - generating unique addresses for users
      |       - storing private keys (encryption)
      |
      +--> [User database]
      |       - balance of each user
      |       - history of deposits, withdrawals, and exchanges
      |
      +--> [Node / RPC providers]
      |       - tracking incoming transactions
      |
      +--> [Sweep mechanism]
      |       - collecting funds from user addresses to the main hot wallet
      |       - periodic redirection to cold wallet
      |
      +--> [Exchange]
              - virtual currency exchange at internal rate
              - instant balance conversion for the user

4. Functional Requirements

4.1 Registration and Authentication

The user interacts through the Telegram bot.
Upon first launch, the bot creates a record in the database.

4.2 Balance Top-Up

The user selects a currency.
A unique address for the selected currency is generated.
The user sends funds to the address.
The server tracks the transaction through the node/RPC.
The balance is updated instantly in the bot.
Sweep collects funds to the main hot wallet periodically.

4.3 Balance Display

The balance in the Telegram bot is shown in real-time.
Support for multiple currencies simultaneously.

4.4 Withdrawal of Funds

The user enters the address and amount.
Balance and fee check.
Transaction formation with the private key of the hot wallet.
Sending to the network and updating the database.

4.5 Built-in Exchange

The user selects the currency they want to exchange and the currency they want to convert to.
The conversion occurs virtually within the database, there is no need to physically transfer funds.
The exchange rate is set within the bot by the administrator.
After the exchange, the user's balance is updated instantly.
The history of exchanges is saved for the user and admin.

4.6 Sweep

Periodic collection of funds from user addresses to the main hot wallet.
The fee is paid on the network.
Sweep does not affect the balance display in the bot.

5. Security

Private keys are encrypted and stored only on the server.
For large reserves, part of the funds is transferred to cold wallet.
The server is protected: firewall, monitoring, backups.
Logging of all operations (deposits, withdrawals, sweep, exchanges).

6. Admin Panel (optional)

View user balances.
History of deposits, withdrawals, and exchanges.
Manage sweep and cold wallet.
Set internal exchange rates.

7. Technology Stack

Language: Python / Node.js
Libraries for wallets:
- BTC/LTC → bitcoinlib, bit, bitcoinjs-lib
- ETH/ERC-20 → web3.py, ethers.js
- TRON/TRC-20 → tronpy, tronweb
Database: PostgreSQL / MySQL
RPC providers / nodes: Infura, Alchemy, TronGrid, ElectrumX

Proposals 13

Rostislav Novik

5 0

Projects 5
Rating -
Rating 1 136

Budget: 6000 EUR Deadline: 60 days

Hello, I have worked multiple times with all the necessary networks. I have done both wallets and monitoring. I have experience with the entire required stack. I can provide documentation. The complete development of this project will take about 1-2 months. The price is 6000 euros. For convenience, we can divide it into several parts.

Mihaylo P.

12 2

Projects 12
Rating -
Rating 646

Budget: 400 EUR Deadline: 7 days

I will complete your task immediately. Quickly and efficiently. Over 6 years of experience in programming and administration.

Shamil Hatamov

0 0

Projects -
Rating -
Rating 106

Budget: 2500 EUR Deadline: 40 days

Hello, I can take on your project with 3 years of experience with Telegram bots.

Alexey Manuilskyi

0 0

Projects -
Rating -
Rating 472

Budget: 7500 EUR Deadline: 70 days

Hello!
My name is Alexey, I represent a group of developers – NC-1.
For more than five years, we have been creating websites, mobile applications, online stores, ERP/CRM systems, and other e-commerce products.
In our team, there is a specialist (middle) with the necessary experience and knowledge for you. The hourly rate is 17 EUR. We offer the stack: Python + PostgreSQL + Redis + Docker + Blockchain libraries.
Cases - https://1drv.ms/b/c/b7a0d31a9dae1bc5/EeH6JPdpBbpKtrkA1zFQOIMBAmqUcd_Ptx5tt5p9hBNG-g?e=wXDGHh
Portfolio – https://nc-one.com/case-studies

Inna Levytska

0 0

Projects -
Rating -
Rating 192

Budget: 2000 EUR Deadline: 30 days

👋 Good evening!
I am interested in your project - I have experience in developing Telegram bots with cryptocurrency support, working with hot/cold wallets, integrating with Web3 (Ethereum, BSC, Tron), and setting up exchanges.

What I offer:
- Development of a Telegram bot with all the specified functionality (deposits, withdrawals, exchanges, balance display)
- Cryptocurrency support: BTC, ETH/ERC-20, TRX/TRC-20, BNB/BEP-20, and others
- Secure storage of private keys (encryption, sweep, cold wallet)
- Implementation of a sweep mechanism and a virtual exchange
- Admin panel for managing users and rates (if needed)

I am ready to discuss the details, always in touch.
Thank you!

Artem Albovsky

9 0

Budget: 700 EUR Deadline: 30 days

Write in private messages, I will create such a bot for you on nodejs. I also know where to get hosting so that the bot works 24/7.

Karen Matsakyan

4 1

Budget: 1000 EUR Deadline: 30 days

Hello!

I have studied your technical specifications for the Telegram bot with a hot wallet and built-in exchange. I have experience in developing crypto bots and integrating blockchain functionality (deposits, withdrawals, internal exchanges, working with nodes/RPC providers).

What I propose:
• Development of the bot in Python (aiogram / pyTelegramBotAPI) or Node.js (telegraf).
• Support for all specified currencies (BTC, LTC, ETH/ERC-20, BNB/BEP-20, TRX/TRC-20, USDT, etc.).
• Generation of unique addresses for users (via HD Wallet), encryption of private keys.
• Automatic deposit and balance update in the bot.
• Withdrawal of funds with commission and transaction status checks.
• Virtual internal exchange with flexible rate settings.
• Sweep mechanism for periodic collection of funds to the hot wallet and transfer to the cold wallet.
• Database (PostgreSQL / MySQL) with a history of deposits, withdrawals, and exchanges.
• Optional: admin panel for managing rates and monitoring operations.
• Security measures: encryption, firewall, backups.

Timelines and costs will depend on whether a minimum viable product (MVP) is needed or a full version with an admin panel right away.
🔹 MVP (deposit + withdrawal + balance) — from 3–4 weeks.
🔹 Full implementation with exchange, sweep, and admin panel — from 6–8 weeks.

Questions for clarification:
1. Are you planning to launch on your own nodes or use RPC providers (Infura/Alchemy/TronGrid)?
2. Is the admin panel needed as a web interface or are commands in the bot sufficient?
3. Is it important to implement a cold wallet right away, or can it be postponed to the second stage?

I am ready to discuss the details and propose the optimal architecture option.

Best regards,
Karen.

Joseph Collins Mahihu

0 0

Projects -
Rating -
Rating 421

Budget: 10100 EUR Deadline: 60 days

Hello Vladislav,
I can develop a bot that meets all the requirements, in the technology stacks stated.
kindly inbox me

Vladislav Midianka
Praha, Czech Republic

Projects 32
Rating 5.0
Rating 926