Blockchain basics: wallets, networks and gas fees
Understand wallet addresses, blockchain networks and fees when reading wallet confirmations and transaction records.
GIWA Testnet Guide: Add GIWA Sepolia, Get Test ETH and Try the Playground
GIWA is an OP Stack Ethereum L2 from Upbit's operator Dunamu; mainnet is still in development. Network details, faucets, the Playground and the no-token rule.
How to Claim Grass Stage 2 Rewards: USDC Steps, Deadline and Phishing Checks
Grass pays Stage 2 rewards entirely in USDC. Claims opened on July 22, 2026 and close on January 22, 2027. Check eligibility, how points convert, and how to claim only through the official dashboard.
How to Set Up a Binance Account: Regions, Verification, Security
Settle regional availability and verification tier before registering. Why funding carries more risk than fees, and four settings to finish on day one.
OKX Account vs Web3 Wallet: What to Settle Before You Start
One app holds two different things: a custodial exchange account, and a self-custodial Web3 wallet whose recovery phrase nobody can restore for you.
Why estimated and final gas fees can differ
Distinguish an estimate, a fee cap, and actual usage when reading wallet prompts and transaction receipts.
Gas Too Expensive? Five Things That Actually Work (and Three That Don't)
How do you cut gas costs? Five methods that work — Layer 2, off-peak timing, batching, correct gas settings, fewer transactions — plus three that don't.
Small Amounts: Should You Keep Them on an Exchange or in a Wallet?
Exchange or self-custody wallet for small amounts? Compare the real risks for trading, holding, on-chain use and payments — and why fees decide it.
Withdrawing From an Exchange to Your Own Wallet: Full Walkthrough
How do you withdraw from an exchange to your own wallet? Wallet setup, address and network selection, test transfers, fees, and six common mistakes.
What Does DYOR Mean, and How Do Beginners Actually Do It?
What does DYOR mean? A beginner checklist: cross-check official sites, read the docs, verify contracts on Etherscan, and read data on DeFiLlama and Dune.
What Is a Testnet? How to Get Test Tokens and Testnet NFTs
What a testnet is, how to claim free Sepolia test tokens from a faucet, how testnet NFTs are minted and found, and how to avoid fake faucets.
What Is an ENS Name, and How Do .eth Addresses Work?
What is an ENS name? How .eth names map to addresses, forward and reverse resolution, what to check before sending, renewal rules, and lookalike risks.
What Does Minting an NFT Mean? A Pre-Mint Checklist
What does minting an NFT mean? How it differs from buying, what the wallet popup confirms, how fake mint pages work, plus a pre-mint checklist.