DMDora Mileninkripto-pocetnica.hashnode.dev·Sep 26 · 30 min readZašto zamene unutar novčanika mogu neprimetno da koštaju korisnike od 3% do 7%Najskuplji broj na ekranu za zamenu često je upravo onaj koji nikada nije označen. To je razlika između tržišne vrednosti koju korisnik daje i tržišne vrednosti koju dobije nakon trgovine. Novčanik mo00
AAntoniointonymoon.hashnode.dev·Sep 16 · 2 min readFreelanceFlovv Micro-Tasks Marketplace Inside World AppFor the last few weeks I've been heads-down building FreelanceFlovv, a freelance marketplace Mini App that lives entirely inside World App. No separate sign-up flow, no email/password, no "prove you'r00
SNsamineni nikhilinnikhilsamineni.hashnode.dev·Sep 15 · 10 min readSocial Engineering & Phishing Attack — A Hands-on Cybersecurity LabIntroduction When we talk about cybersecurity, we usually think about hackers attacking computers, servers, or networks. But there is another important target: people. An attacker does not always need00
RMRowan maththiasinrowanmaththias.hashnode.dev·Sep 3 · 2 min readInside a Crypto Exchange: What Really Happens After You Click “Buy”?A simple “Buy BTC” action triggers a carefully coordinated sequence of processes inside a crypto exchange. The request first passes through the trading gateway, where authentication, permissions, rate00
SGShriganesh Guptain0xshriganeshgupta.hashnode.dev·Aug 30 · 5 min readThe Compliance Trap: Why Developers Need to Stop Hoarding User PIIWhen you're building a project for a weekend hackathon, speed is everything. You spin up a quick database, wire up an authentication or KYC provider, and save every single field they throw back at you00
DOD Ozgur Cakirkayaindocak.hashnode.dev·Aug 24 · 22 min read🌳 Demystifying Merkle Trees: The Cryptographic Backbone of Modern Blockchains and Layer 2s1. 🔍 Introduction: What is a Merkle Tree? A Merkle tree — also called a hash tree — is a binary tree of hashes in which every leaf node is the hash of a unit of data, and every non-leaf node is the h00
RMRowan maththiasinrowanmaththias.hashnode.dev·Aug 19 · 8 min readHow Smart Contract Events Work on EVM BlockchainsA smart contract can execute a token transfer, create an order, mint an NFT, or process a deposit in seconds. But how does an application know that one of these actions actually happened? Reading the 00
TGTathagat Guptainbuilders-runtime.hashnode.dev·Jul 8 · 11 min readEthereum's Storage System: How 32 Bytes Hold an Entire WorldEthereum compresses its entire global computing state into a 32-byte hash every 12 seconds. This 32-byte hash is used to verify every account balance, every smart contract's storage, and every line of20
GPGlory Praise Emmanuelinglorypraise.hashnode.dev·Jun 29 · 9 min readOn-Chain vs Off-Chain: How to Decide What Data Lives Where in Web3One of the most consequential decisions in any Web3 system is also one of the least discussed honestly: what data lives on-chain, what lives off-chain, and how to build a system that uses both correct00
ALAutonix Labinautonix-lab.hashnode.dev·Jun 11 · 3 min readDeFi for Traditional Businesses: A Practical Guide to Getting StartedDecentralized finance has a branding problem. For most business owners and finance executives, "DeFi" still conjures images of crypto speculators chasing yield on obscure tokens. That association is u00
