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arec1b0/README.md

Daniil Krizhanovskyi | Cryptography & Distributed Systems

Code Time GitHub Profile Views GitHub Stars

$ whoami?

"Architecting secure, scalable, quantum-resilient decentralized systems."

Decentralized Systems Architect with deep expertise in quantum-resistant cryptography, secure distributed systems, and blockchain scalability. Currently CTO at @PeoChain, driving innovation in financial decentralization.

🛠️ Core Technologies

  • Cryptography: Post-Quantum Cryptography (Kyber, Falcon), zk-SNARKs, Elliptic-Curve Cryptography (ECC)
  • Languages: Rust, C++, Solidity, Python
  • Blockchain: Layer-2 Scaling (Rollups, ZK-EVM), Smart Contract Security, Consensus Algorithms (PoS, BFT)

Explore PeoChain | Explore PeoPay

impl Expertise {
    pub fn new() -> Self {
        Self {
            cryptography: vec!["PQC", "ECC", "zk-SNARKs"],
            languages: vec!["Rust", "C++", "Solidity"],
            blockchain: vec!["Consensus", "Smart Contracts", "L2 Scaling"],
        }
    }
}

Rust C++ Solidity

📊 GitHub Analytics

🎯 Expertise Matrix
Loading 
pie showData
    title Technical Proficiency
    "Cryptography" : 86
    "Distributed Systems" : 90
    "Systems Programming" : 75
    "Low-Level Optimization" : 75

📫 Connect

LinkedIn Medium Email X

Pinned Loading

  1. quantum_cryptographic_toolkit Public

    The Quantum Cryptographic Toolkit (QCT) is a comprehensive framework designed to facilitate the development, testing, and deployment of quantum-resistant cryptographic algorithms.

    Rust 4

  2. nim-blockchain-node Public

    A high-performance, scalable blockchain node implementation in Nim, designed with advanced cryptography, modular consensus (PoS/BFT), zero-knowledge proofs, and optimized P2P networking.

    Nim

  3. consensus-algorithms-edu Public

    Educational repository demonstrating blockchain consensus algorithms, including PoW, PoS, DPoS, PBFT, Raft, and Paxos, implemented in Go.

    Go 1

  4. crypto-comparison Public

    A comprehensive project comparing classical and quantum cryptography. Includes detailed explanations, code examples, and tests for various cryptographic algorithms and protocols.

    Python 3

  5. DAO.sol
    1 
    // SPDX-License-Identifier: MIT
    2 
    pragma solidity ^0.8.27;
    3 
    
              
    
              
    
                4
                
    /**
    
              
    
              
    
                5
                
     * @title DAO (Decentralized Autonomous Organization) Contract
    
              
    
          
    
    
    
  
    

    6. 

      
  6. 
  
    
    
    
      
    
        
    
            
          FortifySol            Public template
        
    
      
    


      
    
        FortifySol: A flexible open-source Solidity template providing secure, upgradeable, and governance-ready contracts. Ideal for small prototypes or complex productions, it’s an all-in-one starting po…
      
    

      
    
          
  
  JavaScript


      
    
    
    
  
    

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            Created
              5
            
            repositories
          
          
            
            
          

      
          









      

  
  

  
    

      

        Created a pull request in PeoPay/peochain-demo that received 1
        comment
      

      
        
    


    

        
      

        

          feat: Fully update consensus module with documentation and README
        


          

            

Enhanced src/lib.rs with comprehensive in-code documentation using Rust doc comments (///) for all public items, including traits, structs, and me…

          


        

            
              
                +693
              
              
                −194
              
              
              lines changed
              •
            
          1
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            Opened 4
            other
            pull requests in
            3
            repositories
          
          
            
            
          

      
          
  
    

      
      
      





  
    

      
      
      





  
    

      
      
      














    



      

  
  

  
    

      

        Created an issue in
        krinzhanovskyi/DISCORD_BOT
        that received 1
        comment
      

      
        
    


    

        
      

        

          Blocking Database Calls in Async Code
        


          

            
Description:
The bot executes synchronous SQLite queries in async Discord commands, which can block the event loop.
Suggested Fix:
Use aiosqlite fo…

          

        

          1
          comment
        

      

    






    
  

  
  

  
      
    

                
            Opened 13
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