Cryptocurrency markets are experiencing volatility, with notable declines in Bitcoin, Ethereum, Solana, and Dogecoin.Jamie Coutts warns of increased risk for assets as USD strengthens and central bank actions fluctuate.Swissblock analysts highlight the US presidential election as a key factor, stressing the market impact of potential non-acceptance of results.US spot Bitcoin ETFs see significant growth, now holding over 1 million BTC valued at approximately US$68 billion.