Web3
Slippage in crypto trading: What it costs you and how to control it
The gap between the price you see and the price you get is a real trading cost. Here is where it comes from and what limits it.
September 13, 2026
L4 News — BLOCKCHAIN · WEB3 · ASSETS
Latest News
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.
August 26, 2026
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.
August 28, 2026
Blockchain
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.
August 12, 2026
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…
July 23, 2026
Blockchain
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.
June 30, 2026
Web3
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…
August 22, 2026
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…
July 24, 2026
Security
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.
August 24, 2026
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.
August 18, 2026
Crypto News
Crypto News
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…
August 20, 2026
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.
August 16, 2026
Finance News
Finance News
What is a spot bitcoin ETF, and how does it actually work?
A plain-English look at how spot bitcoin ETFs are built, who holds the coins, what they cost, and what changed when regulators allowed funds to trade bitcoin…
August 14, 2026
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…
August 10, 2026
Don't Miss
Blockchain
What is a blockchain node?
A blockchain node is any computer holding and checking a copy of the shared record — here is who runs them and why the crowd matters.
June 7, 2026
Web3
What are gas fees, and why do they change?
Gas fees are auction prices for scarce block space. Here is the mechanism behind the number — including what Ethereum's 2021 EIP-1559 change did and did not…
April 25, 2026
Security
What is address poisoning?
Scammers seed your transaction history with look-alike addresses so that one careless copy-paste sends real money to them — and the usual check won't catch it.
February 21, 2026
Crypto News
The SEC's five crypto categories, explained
An SEC interpretive release issued with the CFTC on March 17, 2026 mapped crypto assets into five categories and said certain mining, staking, wrapped tokens…
March 21, 2026