Topic: 🔥 [WEB3 SERVICE] 🔥 Blockchain development, smart contracts, DeFi, NFT, GameFi - page 8. (Read 2185 times)

Cryptocurrency exchanger with automatic and semi-automatic transactions. Support for 4 blockchains. Works with payment systems and Visa, Mastercard, Unionpay cards. Scaling and changing various functions.

The most detailed statistics: admin panel, account management, blacklist, ticket, content management. Multilingual support.

Stack: Node.JS, JavaScript, PHP, Laravel

Cryptocurrency exchanges are online platforms that allow users to buy, sell or exchange cryptocurrency. They have several features that should be considered when using:

1. Anonymity: Many cryptocurrency exchanges do not require users to provide personal information such as name and email address. This makes using cryptocurrency exchanges more anonymous than traditional banking transactions.

2. High volatility: Cryptocurrency prices can fluctuate significantly over a short period of time. This means that users can make big profits or lose money depending on how quickly the price changes.

3. Availability of commissions: Cryptocurrency exchangers usually charge commissions for conducting transactions. These may vary depending on the platform and type of operation.

4. Security: Cryptocurrency exchangers must be safe to use. However, some platforms may fall victim to cyber attacks, which can lead to leakage of user data and loss of funds.

5. Country restrictions: In some countries, the use of cryptocurrency exchangers may be prohibited or limited. Users should ensure that they comply with local laws and regulations when using the platform.

In general, cryptocurrency exchangers provide the opportunity to quickly and conveniently trade cryptocurrencies. However, users must be careful and take security measures to avoid losing their funds.

We have experience in developing cryptocurrency exchangers and are happy to share examples of them.

For example



Sincerely FreeBlock.

Rest assured, it is not for nothing that we claim to have experience in the field of blockchain and know all the issues that may arise when writing smart contracts.
Thanks to our long experience, we know what to pay attention to, because as in any software development, writing smart contracts can encounter the following difficulties:

1. Complexity of programming language: Smart contracts can be written in various programming languages such as Solidity, Rust, etc. Each language has its own characteristics and requires special knowledge.

2. Security: Smart contracts may contain vulnerabilities that can lead to loss of funds or security breaches. It is necessary to carefully check the code for vulnerabilities and take measures to eliminate them.

3. Platform Limitations: Smart contracts operate in a blockchain environment, which means they are limited by the capabilities of that platform. For example, some blockchains do not support performing complex calculations or accessing external data.

4. Testing Difficulty: Testing smart contracts can be difficult due to platform limitations and the need to simulate different use cases.

5. Updating contracts: Changing smart contracts can be difficult due to their immobility and immutability. It is necessary to carefully consider the architecture of the contract and the possibility of updating it in the future.

Our company has the knowledge and experience in developing such software, which guarantees you a reliable and high-quality product.
We will always be happy to advise you regarding your technical specifications and implement your project.

Project: PIVX-based blockchain and web wallet - another interesting project developed on a turnkey basis by our team
Name: Yoda


Development of a POS cryptocurrency with low transaction costs and staking. In addition to the cryptocurrency itself, it includes the development of a web wallet, a desktop wallet and applications for iOS and Android, an investor's personal account and a referral program. The personal account structure includes elements of the following functionality: Web wallet, Balance management, Address generation, Initiation, Transactions, Processing of all blockchain transactions, Two-factor Google authorization, Two-factor Google transaction confirmation, Functionality for restoring the wallet access phrase, 12 words, Building a network structure on blockchain transactions.

Stack: Laravel, C++, Bitcoin

If you have questions about the development, you can contact us via PM, email or telegram.

We are sharing another project we have developed - Cryptocurrency Exchange


Cryptocurrency exchange with a trading terminal, referral program and dividend payment. Deposit and withdrawal of cryptocurrencies (btc, eth, ustd) and currencies (usd, euro). Extensive functionality of the admin panel.


Stack: Angular, PHP, Yii

One of our many projects developed in 2020.
Ethereum smart contract-based blockchain game

A blockchain game built on the Ethereum smart contract based on the model "who made the most bet is the richest and most popular, the last one loses, the rest players take their bets and even more". A smart contract, user profile, ratings and connection via MetaMask have been developed.  


Stack: Vue.js, Laravel, Ethereum

Blockchain & Full-Stack Developer  
I have been working since 2017 in the Blockchain market, since 2010 in IT. Ready to develop turnkey decentralized applications:
- Smart contracts, blockchains and wallets;
- DeFi protocols and GameFi;
- NFT marketplaces and NFT collections;
- Crypto exchanges and crypto exchangers;

Blockchains: Ethereum, Binance Smart Chain, Polygon, Solana, Tron, Avalanche, Cosmos;
Stack: Solidity, Rust, Truffle, React, Vue.js, Node.js, Laravel.

Telegram: @FreeBlockDev

Email: [email protected]

Site: https://freeblock.dev