Cryptocurrency & Blockchain

Crypto slippage bot and how to create one

Sick of Slippage Eating Your Crypto Profits? Build a Bot to Fight Back!

You have executed an exceptionally strategic crypto trade, feeling on top of the world, only to see your profits vanish due to slippage. This frustrating scenario is all too common and can be incredibly disheartening. However, there is a powerful tool at your disposal: slippage bots.

These automated systems are designed to minimize the discrepancy between the expected price and the actual execution price, ensuring your profits remain intact. By employing slippage bots, you can safeguard your earnings and maintain control over your trading outcomes.

Sound too good to be true? It’s not!

This guide will show you exactly how to build your own personal slippage bot, customized to fit your trading style. Here are two paths you can take:

  • Coding Warriors: If you’re comfortable with coding, we’ll teach you how to build a bot using Python or JavaScript.

  • Blockchain Builders: For the more adventurous, we’ll dive into creating a bot using Solidity on the Ethereum blockchain.

Don’t worry, there’s an option for everyone!

Ready to take control and stop slippage from stealing your crypto dreams? Keep reading to explore each step in detail and build your very own profit-protecting bot!

What is slippage in crypto?

Slippage in crypto trading refers to the difference between the expected price of a trade and the actual price at which the trade is executed. This can occur due to market fluctuations or a lack of liquidity, meaning there are not enough buyers or sellers at the desired price level.

To calculate slippage percentage, you can use the following formula:

Slippage percentages can vary significantly, typically ranging from 0.1% to 5%, depending on market conditions, liquidity, and the size of the trade.

Create a Crypto Slippage Bot: a step-by-step guide

Step 1 : Development Environment Setup

Laying the groundwork for your crypto slippage bot hinges on establishing a suitable development environment. Here’s what you’ll need:

  1. Code Editor: Start by installing a code editor like Visual Studio Code. This will be your primary workspace for writing, managing, and navigating your code.

  2. Solidity Compiler: Next, install a Solidity compiler. This critical tool translates Solidity code (the programming language for Ethereum smart contracts) into bytecode, a format that the Ethereum Virtual Machine (EVM) can execute. Alternatively, use Remix at remix.ethereum.org.

  3. MetaMask: Integrate MetaMask, a browser extension that acts as your Ethereum wallet. MetaMask empowers you to interact securely with the Ethereum blockchain. It facilitates tasks like deploying and funding smart contracts, as well as executing transactions. Connecting MetaMask to the Ethereum mainnet grants you access to the live Ethereum network, enabling you to test and deploy your slippage bot in a real-world setting.

Connecting to a Cryptocurrency Exchange

Connecting to a cryptocurrency exchange is a fundamental aspect of developing a crypto slippage bot. This connection enables your bot to interact with the exchange, obtain market data, and execute trades.
Here’s a detailed guide on how to do this using the `ccxt` library in Python:

Step-by-Step Guide

1. Install the `ccxt` Library

First, ensure you have Python installed on your system. Then, install the `ccxt` library, which provides a unified way to interact with various cryptocurrency exchanges.

“`bash

pip install ccxt

“`

2. Obtain API Keys

To connect to an exchange, you’ll need API keys. These keys provide secure access to your account for trading and data retrieval. Here are the steps to obtain API keys from some popular exchanges:

Binance

1. Log in to your Binance account.

2. Go to “API Management” from the profile menu.

3. Create a new API key, label it, and complete the security verification.

4. Note down your `apiKey` and `secret`.

Coinbase Pro

1. Log in to Coinbase Pro.

2. Navigate to “API” under your profile settings.

3. Create a new API key, specify the permissions, and note down the passphrase, API key, and secret.

Kraken

1. Log in to your Kraken account.

2. Go to “Security” and then “API” on the dropdown menu.

3. Generate a new API key, configure the permissions, and save the API key and secret.

3. Connect to the Exchange

Now that you have your API keys, you can use the `ccxt` library to connect to your chosen exchange. Below is an example for Binance:

```python

import ccxt

# Replace with your own API keys

api_key = 'YOUR_API_KEY'

api_secret = 'YOUR_SECRET_KEY'

exchange = ccxt.binance({

    'apiKey': api_key,

    'secret': api_secret,

})

# Verify connection by fetching account balance

balance = exchange.fetch_balance()

print(balance)

```

4. Handling Exchange-Specific Features

Different exchanges may have unique features and limitations. It’s essential to refer to the `ccxt` documentation and the specific exchange API documentation to understand these nuances.

Example: Fetching Market Data

You can fetch various types of market data such as tickers, order books, and trades:

```python

# Fetch ticker data

ticker = exchange.fetch_ticker('BTC/USDT')

print(ticker)

# Fetch order book data

order_book = exchange.fetch_order_book('BTC/USDT')

print(order_book)

# Fetch recent trades

trades = exchange.fetch_trades('BTC/USDT')

print(trades)

```

Example: Placing Orders

To place orders, use the `create_order` method. Here’s an example of placing a market buy order:

```python

# Place a market buy order

order = exchange.create_market_buy_order('BTC/USDT', 0.01)

print(order)

# Place a market sell order

order = exchange.create_market_sell_order('BTC/USDT', 0.01)

print(order)

```

5. Error Handling and Rate Limits

Exchanges impose rate limits to prevent abuse of their APIs. It’s crucial to handle errors and respect these limits:

```python

import time

try:

    ticker = exchange.fetch_ticker('BTC/USDT')

    print(ticker)

except ccxt.NetworkError as e:

    print('Network error:', e)

    time.sleep(10)  # Wait before retrying

except ccxt.ExchangeError as e:

    print('Exchange error:', e)

```

6. Secure Your API Keys

Never expose your API keys in your code. Use environment variables or secure storage mechanisms to manage them:

```python

import os

api_key = os.getenv('BINANCE_API_KEY')

api_secret = os.getenv('BINANCE_API_SECRET')

exchange = ccxt.binance({

    'apiKey': api_key,

    'secret': api_secret,

})

```

Connecting to a cryptocurrency exchange using the `ccxt` library is a straightforward process. By following these steps, you can securely connect your bot to the exchange, fetch market data, and execute trades. Always refer to the latest documentation of both `ccxt` and the exchange’s API for any updates or changes.

Fetching Market Data

To create an effective crypto slippage bot, it is crucial to have access to real-time market data. This data will allow the bot to analyze price trends, liquidity, and market depth, which are essential for making informed trading decisions.

Types of Market Data to Fetch

1. Ticker Data: Provides the latest price, volume, and other key metrics for a trading pair.

2. Order Book: Shows the current buy (bid) and sell (ask) orders in the market.

3. Recent Trades: Lists the most recent trades executed on the exchange.

4. OHLCV Data: Stands for Open, High, Low, Close, and Volume. It is useful for technical analysis.

5. Balance Data: Shows the current balance of your account on the exchange.

Fetching Market Data with `ccxt`

Below are examples of how to fetch each type of market data using the `ccxt` library:

Ticker Data

Ticker data provides the latest price, bid, ask, and other statistics for a specific trading pair.

```python

import ccxt

exchange = ccxt.binance({

    'apiKey': 'YOUR_API_KEY',

    'secret': 'YOUR_SECRET_KEY',

})

ticker = exchange.fetch_ticker('BTC/USDT')

print(ticker)

```

The `fetch_ticker` method returns a dictionary containing information like:

– `symbol`: Trading pair (e.g., ‘BTC/USDT’)

– `timestamp`: Time of the data

– `high`: Highest price in the last 24 hours

– `low`: Lowest price in the last 24 hours

– `bid`: Current highest bid

– `ask`: Current lowest ask

– `last`: Last traded price

– `baseVolume`: Trading volume of the base currency

Order Book

The order book shows the current buy and sell orders in the market, giving insights into market depth and liquidity.

```python

order_book = exchange.fetch_order_book('BTC/USDT')

print(order_book)

```

The `fetch_order_book` method returns a dictionary with:

- `bids`: List of [price, amount] pairs for buy orders

- `asks`: List of [price, amount] pairs for sell orders

- `timestamp`: Time of the data

Recent Trades

Recent trades provide a history of the latest trades executed on the exchange.

```python

trades = exchange.fetch_trades('BTC/USDT')

for trade in trades:

    print(trade)

```

The `fetch_trades` method returns a list of dictionaries, each containing:

- `price`: Trade price

- `amount`: Trade amount

- `timestamp`: Time of the trade

- `side`: 'buy' or 'sell'

**OHLCV Data**

OHLCV data is useful for performing technical analysis.

```python

ohlcv = exchange.fetch_ohlcv('BTC/USDT', timeframe='1m')

for candle in ohlcv:

    print(candle)

```

The `fetch_ohlcv` method returns a list of lists, each containing:

– `timestamp`: Time of the open

– `open`: Opening price

– `high`: Highest price

– `low`: Lowest price

– `close`: Closing price

– `volume`: Volume of trades during the period

Balance Data

Fetching balance data helps to monitor available funds on the exchange.

```python

balance = exchange.fetch_balance()

print(balance)

```

The `fetch_balance` method returns a dictionary with:

– `total`: Total amount of each currency

– `free`: Available amount for trading

– `used`: Amount locked in orders

Integrating Data Fetching into Your Bot

To integrate these data-fetching methods into your bot, create functions that can be called when needed to update the bot’s understanding of the market.

```python

def get_ticker_data(pair):

    return exchange.fetch_ticker(pair)

def get_order_book(pair):

    return exchange.fetch_order_book(pair)

def get_recent_trades(pair):

    return exchange.fetch_trades(pair)

def get_ohlcv_data(pair, timeframe='1m'):

    return exchange.fetch_ohlcv(pair, timeframe)

def get_balance():

    return exchange.fetch_balance()

```

By organizing your data-fetching logic into functions, you can easily update and maintain your bot’s market analysis capabilities. This will ensure your bot has the most current information needed to make informed trading decisions and minimize slippage effectively.

Implement Slippage Calculation

Slippage calculation is crucial for understanding the price movement when placing a buy or sell order. This function analyzes the order book, which contains the current bids (buy orders) and asks (sell orders) on an exchange. By simulating a trade’s execution, the function determines the impact on the price and calculates the potential slippage.

Here is an enhanced version of the slippage calculation function with detailed explanations:

```python

def calculate_slippage(order_book, amount):

    """

    Calculate the potential slippage for a given trade amount based on the order book.

    :param order_book: A dictionary containing 'bids' and 'asks', each being a list of [price, volume] pairs.

    :param amount: The amount of the asset to be traded. Positive for buy orders, negative for sell orders.

    :return: The total slippage incurred for the given trade amount.

    """

    bids = order_book['bids']  # List of [price, volume] pairs for buy orders

    asks = order_book['asks']  # List of [price, volume] pairs for sell orders

    slippage = 0  # Initialize slippage to zero

    if amount > 0:  # Buy order

        for ask in asks:

            ask_price, ask_volume = ask

            if amount <= ask_volume:

                slippage += ask_price * amount

                break

            else:

                slippage += ask_price * ask_volume

                amount -= ask_volume

    else:  # Sell order

        amount = abs(amount)

        for bid in bids:

            bid_price, bid_volume = bid

            if amount <= bid_volume:

                slippage += bid_price * amount

                break

            else:

                slippage += bid_price * bid_volume

                amount -= bid_volume

    return slippage

```

Detailed Explanation

1. Function Definition and Parameters:

   – `order_book`: A dictionary containing ‘bids’ and ‘asks’, each mapping to a list of [price, volume] pairs. This represents the current state of the order book.

   – `amount`: The amount of the asset you wish to trade. Positive values represent buy orders, while negative values represent sell orders.

2. Initialize Variables:

   – `bids` and `asks` are extracted from the `order_book` dictionary.

   – `slippage` is initialized to zero, which will store the cumulative slippage value.

3. Buy Order Calculation:

   – If `amount` is positive, it indicates a buy order.

   – The function iterates through the `asks` list, checking each ask order.

   – If the remaining amount to be bought can be fulfilled by the current ask volume, the function adds the total cost to the `slippage` and breaks the loop.

   – If the current ask volume is insufficient, the function adds the cost for the available volume to the `slippage` and reduces the `amount` by the ask volume.

4. Sell Order Calculation:

   – If `amount` is negative, it indicates a sell order. The absolute value of the amount is taken for easier calculation.

   – The function iterates through the `bids` list, checking each bid order.

   – If the remaining amount to be sold can be fulfilled by the current bid volume, the function adds the total revenue to the `slippage` and breaks the loop.

   – If the current bid volume is insufficient, the function adds the revenue for the available volume to the `slippage` and reduces the `amount` by the bid volume.

5. Return the Slippage:

   – The function returns the calculated `slippage`, representing the total cost or revenue impact of executing the trade at current market prices.

Example Usage

Here is an example of how you might use this function with a sample order book:

```python

order_book_example = {

    'bids': [

        [30000, 1],  # Price: $30,000, Volume: 1 BTC

        [29950, 2],

        [29900, 1.5]

    ],

    'asks': [

        [30100, 1],

        [30150, 2],

        [30200, 1.5]

    ]

}

buy_amount = 2  # Buy 2 BTC

sell_amount = -1.5  # Sell 1.5 BTC

buy_slippage = calculate_slippage(order_book_example, buy_amount)

sell_slippage = calculate_slippage(order_book_example, sell_amount)

print(f"Slippage for buying 2 BTC: ${buy_slippage}")

print(f"Slippage for selling 1.5 BTC: ${sell_slippage}")

```

This function can be further optimized and integrated into a larger trading system to monitor and execute trades efficiently, minimizing the impact of slippage.

Develop Trading Logic

Developing the trading logic is a critical step in creating a slippage bot. This involves setting up the rules and conditions under which the bot will execute trades. The goal is to minimize slippage and maximize favorable pricing by considering various market factors.

1. Fetch and Analyze Market Data

The bot should continually fetch the latest market data and analyze it to determine the optimal time to execute a trade.

“`python

def fetch_market_data(pair):

    order_book = exchange.fetch_order_book(pair)

    ticker = exchange.fetch_ticker(pair)

    return order_book, ticker

“`

2. Calculate Slippage

Use the previously defined `calculate_slippage` function to determine the potential slippage for the desired trade amount.

```python

def calculate_slippage(order_book, amount):

    bids = order_book['bids']

    asks = order_book['asks']

    slippage = 0

    if amount > 0:  # Buy order

        for ask in asks:

            if amount <= ask[1]:

                slippage += ask[0] * amount

                break

            else:

                slippage += ask[0] * ask[1]

                amount -= ask[1]

    else:  # Sell order

        for bid in bids:

            if abs(amount) <= bid[1]:

                slippage += bid[0] * abs(amount)

                break

            else:

                slippage += bid[0] * bid[1]

                amount += bid[1]

    return slippage

```

3. Define the Trading Strategy

Implement your trading strategy within the `execute_trade` function. This includes determining the acceptable slippage threshold and making decisions based on market conditions.

```python

acceptable_slippage_threshold = 0.01  # Example threshold, adjust as needed

def execute_trade(pair, amount):

    order_book, ticker = fetch_market_data(pair)

    slippage = calculate_slippage(order_book, amount)

    # Check if the current price is favorable

    current_price = ticker['last']

    average_price = (ticker['high'] + ticker['low']) / 2

    if slippage < acceptable_slippage_threshold and current_price < average_price:

        if amount > 0:

            try:

                order = exchange.create_market_buy_order(pair, amount)

                print(f"Bought {amount} of {pair} at {current_price}")

            except Exception as e:

                print(f"Error executing buy order: {e}")

        else:

            try:

                order = exchange.create_market_sell_order(pair, abs(amount))

                print(f"Sold {abs(amount)} of {pair} at {current_price}")

            except Exception as e:

                print(f"Error executing sell order: {e}")

    else:

        print(f"Slippage too high or unfavorable price: {slippage}, {current_price}")

```

4. Risk Management

Incorporate risk management techniques to protect your investments. This could include setting stop-loss limits, diversifying your trades, and limiting the size of each trade.

```python

max_trade_amount = 0.1  # Maximum amount to trade per transaction

def execute_trade(pair, amount):

    if abs(amount) > max_trade_amount:

        print("Trade amount exceeds the maximum allowed.")

        return

    order_book, ticker = fetch_market_data(pair)

    slippage = calculate_slippage(order_book, amount)

    current_price = ticker['last']

    average_price = (ticker['high'] + ticker['low']) / 2

    if slippage < acceptable_slippage_threshold and current_price < average_price:

        if amount > 0:

            try:

                order = exchange.create_market_buy_order(pair, amount)

                print(f"Bought {amount} of {pair} at {current_price}")

            except Exception as e:

                print(f"Error executing buy order: {e}")

        else:

            try:

                order = exchange.create_market_sell_order(pair, abs(amount))

                print(f"Sold {abs(amount)} of {pair} at {current_price}")

            except Exception as e:

                print(f"Error executing sell order: {e}")

    else:

        print(f"Slippage too high or unfavorable price: {slippage}, {current_price}")

```

5. Monitor and Adjust

Regularly monitor the bot’s performance and adjust your strategy as needed. Market conditions can change rapidly, so it’s essential to stay informed and make necessary tweaks to your bot.

```python

import time

def run_bot(pair, trade_amount):

    while True:

        try:

            execute_trade(pair, trade_amount)

        except Exception as e:

            print(f"Error running bot: {e}")

        time.sleep(60)  # Wait for a minute before the next execution

```

By following these steps, you can develop a robust trading logic that minimizes slippage and optimizes trade execution. Continuously refining your strategy based on real-time data and market trends will help you achieve better results.

Backtest Your Bot in Detail

Backtesting is a crucial step in developing a trading bot as it allows you to evaluate how your bot would have performed using historical data. This helps identify potential flaws and optimize your trading strategy before deploying it in a live environment.

Steps for Backtesting Your Crypto Slippage Bot

1. Obtain Historical Data:

   – Historical data includes past prices, order books, and trading volumes. This data can be obtained from various sources such as exchange APIs, third-party data providers, or historical data files.

2. Prepare the Data:

   – Clean and structure the data to ensure it is in the correct format for backtesting. This might involve parsing JSON data, handling missing values, and converting timestamps.

3. Simulate Trades:

   – Simulate the trades your bot would have made based on the historical data. This involves running your trading algorithm on each data point and recording the results.

4. Analyze the Results:

   – Evaluate the performance of your bot by analyzing key metrics such as profit and loss, slippage, and the number of trades executed. Adjust your strategy based on these results.

Example Code for Backtesting

1. Import Libraries

```python

import pandas as pd

import json

# Import the exchange library (ccxt)

import ccxt

```

2. Load Historical Data

```python

# Load historical data from a CSV file

data = pd.read_csv('historical_data.csv')

# Example structure of historical_data.csv:

# timestamp,bids,asks,amount

# 1622548800,"[[50000, 0.1], [49900, 0.2]]","[[50100, 0.1], [50200, 0.2]]",0.05

```

3. Define the Calculate Slippage Function

```python

def calculate_slippage(order_book, amount):

    bids = order_book['bids']

    asks = order_book['asks']

    slippage = 0

    remaining_amount = amount

    if amount > 0:  # Buy order

        for ask in asks:

            if remaining_amount <= ask[1]:

                slippage += ask[0] * remaining_amount

                break

            else:

                slippage += ask[0] * ask[1]

                remaining_amount -= ask[1]

    else:  # Sell order

        for bid in bids:

            if abs(remaining_amount) <= bid[1]:

                slippage += bid[0] * abs(remaining_amount)

                break

            else:

                slippage += bid[0] * bid[1]

                remaining_amount += bid[1]

    return slippage

```

4. Define the Execute Trade Function

```python

def execute_trade(pair, amount, order_book):

    slippage = calculate_slippage(order_book, amount)

    # Implement your trading strategy here

    acceptable_slippage_threshold = 50  # Example threshold

    if slippage < acceptable_slippage_threshold:

        print(f"Executing trade for {pair} with amount {amount} and slippage {slippage}")

        # Here you would simulate placing the order, e.g., update a portfolio value, record the trade, etc.

    else:

        print(f"Trade skipped due to high slippage: {slippage}")

```

5. Backtest the Bot

```python

# Loop through each row in the historical data

for index, row in data.iterrows():

    # Parse the order book data from strings to lists

    order_book = {

        'bids': json.loads(row['bids']),

        'asks': json.loads(row['asks']),

    }

    # Execute the trade with the historical order book data

    execute_trade('BTC/USDT', row['amount'], order_book)

```

6. Analyze the Backtest Results

After running the backtest, you should collect and analyze the results. Key metrics to evaluate include:

– Profit and Loss: Calculate the net profit or loss over the backtesting period.

– Slippage: Measure the total slippage incurred during the trades.

– Trade Frequency: Determine the number of trades executed and the average time between trades.

– Winning vs. Losing Trades: Calculate the ratio of winning trades to losing trades.

Backtesting is an iterative process. Based on the results, you may need to tweak your trading algorithm, adjust parameters, or improve your slippage calculation logic. The goal is to refine your strategy to ensure it performs well under various market conditions before deploying it in a live trading environment.

Best Practices for Using Slippage Bots

Security Measures

When dealing with cryptocurrency trading and smart contracts, security should be a top priority. Implement robust security measures to protect your API keys, personal data, and cryptocurrency holdings. Use secure and reputable platforms for hosting and deploying your slippage bot, and ensure that your code is thoroughly audited for vulnerabilities. Additionally, consider implementing two-factor authentication and encryption techniques to enhance the security of your bot and its interactions with trading platforms.

Monitoring and Optimization

Regularly monitor your slippage bot’s performance and adjust its strategies as needed. Cryptocurrency markets are highly volatile, and market conditions can change rapidly. Continuously analyze your bot’s trading data, identify areas for improvement, and optimize its algorithms and parameters accordingly. Stay up-to-date with market trends, regulatory changes, and technological advancements to ensure your bot remains competitive and compliant.

Risks and Considerations

Potential Risks

While slippage bots offer potential profits, they are not immune to risks. Market risks, such as sudden price fluctuations or lack of liquidity, can still impact your bot’s performance and profitability. Additionally, technical failures, including bugs in the code or vulnerabilities in the underlying blockchain infrastructure, can lead to unexpected behavior and potential losses.

Legal and Ethical Considerations

The use of slippage bots raises legal and ethical concerns. Ensure that your bot complies with all relevant trading regulations and follows ethical practices. Avoid engaging in activities that could be considered market manipulation or unfair trading practices. Additionally, stay informed about the evolving nature of blockchain technology and any regulatory changes that may impact the use of slippage bots in your jurisdiction.

Alternatives to Crypto Slippage Bots

Strategies for Managing Slippage

If you prefer a more hands-on approach or are concerned about the risks associated with slippage bots, consider alternative strategies for managing slippage. One common method is setting appropriate slippage tolerance levels when placing trades. This allows you to control the maximum acceptable deviation from the expected price, protecting you from excessive slippage.

Automated Trading Platforms

Instead of building a custom slippage bot, explore automated trading platforms that offer built-in slippage management features. Many reputable platforms provide tools and algorithms designed to minimize slippage and optimize trade execution. These platforms may also offer additional features, such as risk management tools, backtesting capabilities, and intuitive user interfaces.

Slippage bots offer a sophisticated approach to mitigating slippage risks in cryptocurrency trading. By leveraging advanced algorithms and smart contracts, these bots can detect and capitalize on slippage opportunities, potentially increasing profitability. However, creating and using slippage bots requires a deep understanding of blockchain technology, smart contract development, and trading strategies.

Frequently Asked Questions (FAQ)

1. Are slippage bots legal?

The legality of slippage bots is a complex and evolving topic. While they may be legal in some jurisdictions, others may consider certain strategies employed by these bots as market manipulation or unfair trading practices. It’s essential to research and comply with the relevant laws and regulations in your area.

2. Can slippage bots guarantee profits?

No, slippage bots cannot guarantee profits. Like any trading strategy, they are subject to market risks, technical failures, and other unforeseen circumstances. While slippage bots aim to capitalize on slippage opportunities, their profitability ultimately depends on various factors, including market conditions, trading volume, and the effectiveness of their algorithms.

3. What are the legal and ethical implications of using slippage bots?

The legal and ethical implications of using slippage bots are uncertain and may vary depending on jurisdiction. Some potential concerns include market manipulation, unfair trading practices, and the impact on market integrity and liquidity. It’s crucial to conduct thorough research, seek legal advice, and ensure that your bot operates within the boundaries of applicable laws and ethical guidelines.

Disclaimer: The creation and deployment of a crypto slippage bot carries inherent risks. The cryptocurrency market is subject to significant volatility, and there may not always be an opportunity for slippage. It is of the utmost importance to gain a comprehensive understanding of the risks involved before deploying a bot with real funds. It is important to consider the potential for unexpected market movements, technical issues, and potential security vulnerabilities.

By following these guidelines, you will gain a solid foundation for creating and deploying a crypto slippage bot. It is important to remember that continuous monitoring, adaptation, and risk management are essential for navigating the ever-changing world of cryptocurrency.

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button