Ethereum

Introducing Casper “the Friendly Ghost”

Hi everyone – Vlad here. I’ve been working on the analysis and specification of  “proof-of-stake” blockchain architecture since September 2014. While Vitalik and I haven’t agreed on all of the details of the spec, we do have consensus on many...

Crypto

What is UTXO in Bitcoin? 2026

UTXO stands for Unspent Transaction Output. A UTXO is a non-spent output of a blockchain transaction used to input a new transaction. It is similar to a coin because it has a specific value in its particular currency. For example,...

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