Web3 projects: wallets, networks, DeFi and tools
Understand the features, use cases, practical steps and risks of Web3 wallets, networks, DeFi protocols and developer tools.
CoinAbe: compare the complete USDT purchase-to-wallet cost
A disclosed introduction to our regional USDT tool, with hypothetical arithmetic, reusable CC BY 4.0 withdrawal-fee data and clear limits on estimates.
VIBGG Funding Fee Calculator: Position Size, Holding Days and Historical Scenarios
Use VIBGG to compare perpetual-futures funding amounts by notional, direction and holding days, with current-rate and 30-day-average scenarios and clear calculation limits.
What Is Jupiter? Solana Swap Routing and Ultra Mode
How does Jupiter route a Solana swap? How routing picks a path, what Ultra and Manual modes each give you, and what to check before confirming.
What Is Optimism? OP Mainnet vs OP Stack
What is Optimism, one network or many? What OP Mainnet, OP Stack and the Superchain each mean, and why withdrawals take about seven days.
What Is Arbitrum? Bridging and 7-Day Withdrawals
What is Arbitrum One and how do you bridge to it? How One and Nova differ, chain ID 42161, and why official withdrawals take about seven days.
Safe Multisig Wallet: M-of-N Setup and Key Risks
How does a Safe multisig actually work? What M-of-N approval means, how Safe relates to its signer wallets, and the setup choices you cannot undo.
Phantom Wallet: Supported Chains and Safety Basics
Which chains does Phantom actually support? Its current network scope, what self-custody means in practice, and which EVM networks are missing.
Rabby Wallet: Safety Checks and MetaMask Differences
Is Rabby Wallet worth switching to? How far its pre-signing checks go, how it differs from MetaMask in daily use, and what to do before migrating.
GitHub
What is GitHub and how do you judge a repo? What issues, pull requests and Actions do, plus the signals that show a project is still maintained.
Cloudflare Pages
What is Cloudflare Pages and when does it fit? Git deploys versus direct uploads, what Pages Functions can do, and where the free tier ends.
Vercel
What is Vercel and what does it cost? The path from Git repo to live site, what preview deployments solve, and where the free tier ends.
Next.js
What is Next.js and should you learn it? How file routing works, server rendering versus static generation, and a sensible order to learn it in.