Crypto News
What is a seed phrase, and why does it matter?
A seed phrase is the 12- or 24-word master key to a crypto wallet. Here is what it does, how to store it safely, and how scammers try to steal it.
L4 News — BLOCKCHAIN · WEB3 · ASSETS
Security
How to spot a crypto drainer before it takes your wallet
Crypto drainers are fake sites and apps that ask for one malicious signature — here is the mechanism and the habits that stop it.
Blockchain
What is a smart contract, and how does it actually work?
A plain-English look at the code that runs itself on a blockchain — and why that automation cuts both ways.
Web3
How do Ethereum rollups work, and why do they make transactions cheaper?
Rollups process transactions off Ethereum's main chain and post a compressed record back to it, inheriting Ethereum's security while cutting fees — but…
Finance News
What is a spot bitcoin ETF, and how does it actually work?
Blockchain
Public vs private blockchains, explained
A public blockchain lets anyone read, use and verify the record; a private one restricts membership — the public vs private blockchain choice is about access…
Layer 1 vs Layer 2, explained
Layer 1 is the base chain where everything settles; Layer 2 is built on top of it — the Layer 1 vs Layer 2 distinction, in plain words.
Web3
What is a token standard? ERC-20 and ERC-721
A token standard is the shared rulebook that lets any wallet hold any token. ERC-20 covers interchangeable units, ERC-721 covers unique ones — here is why that…
What is an ENS domain name?
An ENS domain is a readable name like name.eth that maps to a blockchain address. How resolution works, why names became collectibles, and what scammers do with…
Security
What is a SIM swap attack, and how does it drain a crypto wallet?
A SIM swap hijacks your phone number, not your seed phrase — but for accounts protected only by a text message, that's often enough to unlock everything.
What to do if your wallet is compromised
Move first, revoke second, report third — and walk past anyone who promises to recover it all for a fee paid upfront.
Crypto News
SEC closes another batch of crypto enforcement cases — what it means for newcomers
The regulator's 2025 wind-down of several exchange lawsuits changes legal procedure, not the risks a first-time wallet user faces.
What is a seed phrase, and how does it actually protect your wallet?
A seed phrase is a list of words that encodes the master key to every address in a crypto wallet. Here is what that word list is actually doing, based on the…
Finance News
Crypto in retirement accounts: what to know
Yes, U.S. retirement accounts can hold crypto — through self-directed IRAs or employer plans that offer a digital asset option. The mechanics, the rules that…
What is a spot bitcoin ETF, and how does it work?
A spot bitcoin ETF lets investors get exposure to bitcoin's price through a regular brokerage account, without holding a wallet or private keys themselves.
Latest News
Crypto News
What is a pig butchering scam, and how does it target crypto newcomers?
A slow-building fake friendship, a convincing fake trading app, and a payment that never comes back — here's how the scam works and how to spot it early.
Crypto News
Strategy's $216 million bitcoin sale, explained
The largest corporate bitcoin holder sold 3,588 BTC for roughly $216 million between June 29 and July 5, 2026 — its biggest sale ever, after years of buying…
Finance News
MiCA, explained: Europe's crypto rules
Europe's Markets in Crypto-Assets Regulation has fully applied since 30 December 2024 — and the last transition window closed on 1 July 2026. Here is what a…
Crypto News
The UK published its final crypto rules June 30
The FCA's June 30, 2026 rulebook completes the core of Britain's cryptoasset regime — stablecoin reserve rules, market abuse rules, and an authorization gateway…