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On Monday, August 17, 2026, Bitcoin (BTC-USD) and Ethereum (ETH-USD) experienced slight declines in value. Bitcoin opened at $62,829.64, 0.3% lower than Sunday's opening price, but managed to climb to $63,413.32 by 9:17 a.m. ET. Ethereum, which started at $1,874.10 and dropped 0.4% from Sunday's start, rose to $1,894.98 by 9:17 a.m. ET.

Over the past week, Bitcoin has dropped more than 3%, while Ethereum has fallen 1.8%. Analysts are still trying to make sense of the situation, with some pointing to Bitcoin's low volatility as a possible breakout signal, while others believe the crypto bear market will continue to drag prices down further before it hits a bottom.

Bitcoin's all-time high was $126,198.07 on October 6, 2025, and its lowest point was $0.04865 on July 14, 2010. Ethereum's highest point was $4,953.73 on August 24, 2025, and its lowest was $0.4209 on October 21, 2015. Both cryptocurrencies operate in a decentralized manner, utilizing a public digital ledger called the blockchain, which records and verifies transactions without government or banking oversight.

Despite their volatility, investors and analysts continue to closely watch and analyze the movements of Bitcoin and Ethereum.