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Tuesday, September 22, 2026 · Global Edition
L4 News
BLOCKCHAIN · WEB3 · ASSETS
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L4 News

Blockchain

How distributed ledgers reach agreement, what a block contains, when a transaction becomes final, and which guarantees a chain does not provide.

Two network diagrams contrasting open membership with gated approved nodes
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…

Workers building an elevated walkway above an older cobblestone street
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.

Shelf of small computers with glowing status lights in a home study
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.