About

I am a computer security engineer, with a focus on blockchain and smart contract development.

My notes are available on this website, AccessDenied. It covers various topics such as blockchain, cryptography, programming, networking, and so on. I hope you can find your happiness among this content.

Before jumping on the crypto wagon, I participated in my free time in Capture The Flags (CTFs) and solved challenges on TryHackMe and Root Me.

I also run a Twitter/X account to monitor attacks on the blockchain ecosystem. If you have any questions, you can contact me on LinkedIn.

Where to find me

• GitHub — code and the source of this site
• Twitter/X (ADCDIII) — attacks on the blockchain ecosystem
• LinkedIn — the best way to reach me
• Bluesky

Main articles on this site

• RareSkills Solidity Interview Answers - Advanced
• How to build a blockchain oracle
• Deep dive into MetaMask Secrets
• Ethereum Staking - How It Works
• Trezor Crypto Wallet – Cryptography and Security

Published as part of my work for Taurus

Cross-chain bridge

• Blockchain Interoperability Explained: Bridges, Cross-Chain Protocols, and CCIP
• How to Bridge USDC Across EVM Chains Using Chainlink's CCIP Protocol

Tokenization

• Equity Tokenization: How to Pay Dividend On-Chain Using CMTAT
• Token Transfer Management: How to Apply Restrictions with CMTAT and ERC-1404
• Making CMTAT Tokenization More Scalable and Cost-Effective with Proxy and Factory Contracts
• Tokenization on Ethereum and EVM Blockchains: Which Smart Contract Should You Use?

Browse the site

Every article is filed under one or more categories — the largest are Blockchain, Security, Cryptography, Ethereum and Zero-Knowledge Proofs — and tagged on the tags page.