Breaking

COINTELEGRAPH: REX launches 2x leveraged ETF tied to Bitcoin treasury firm Strive Bitcoin Price Unlikely To Be Bothered by Interest Rate Hike: Grayscale Solana and XRP Surge as ETFs Attract Investors, Bitcoin and Ethereum Lose $520M Bitcoin Plummets Below $75,000 Then Soars Past $76,000 as Fed Hike Jitters Shake Crypto Markets

51-percent-attack

What Is Double Spending? An Educational Overview

October 5, 2025

What Is Double Spending? An Educational Overview

Double spending occurs when a digital coin is spent twice; this overview explains how Bitcoin prevents it using cryptographic verification, consensus rules and transaction confirmations.