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Saturday, September 12, 2026 · Global Edition
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Blockchain

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

Diverse residents raising hands in a community vote to reach agreement
Blockchain

What is a consensus mechanism?

A consensus mechanism is the rule set a blockchain uses to agree on one shared record — and the choice between proof of work and proof of stake shapes…