Why the same asset shows a different price on different sites
A quote is never one universal number. Crypto trades on hundreds of venues at once, and each one has its own order book, so Bitcoin can print a slightly different last price on two exchanges in the same second. Aggregators solve this by publishing a volume-weighted average across the venues they track, which is why the figure here can sit a few dollars away from the one on a single exchange.
Equities work differently. A stock quote follows its listing exchange and only moves during that market’s hours, so a US ticker sits frozen from the closing bell until the next session while crypto keeps trading through the night. Gold adds a third pattern: the spot price reflects over-the-counter dealing that runs nearly around the clock on weekdays but stops at the weekend. When a number looks stale, the trading calendar is usually the reason rather than a broken feed.