Mining. In cryptocurrency networks, mining is a validation of transactions. For this effort, successful miners obtain new cryptocurrency as a reward. The reward decreases transaction fees by creating a complementary incentive to contribute to the processing power of the network.
It matters because the actual coffee flavor is extracted from grind better at higher temperatures. I'm not a scientist but I trust those that have done the research and they say that the optimal temperature for hot water in a coffee pot is between 195-200 degrees or just a little under boiling.
Photo: The world's largest cup of coffee contained the equivalent of 216,000 expressos. The Guinness world record for the largest cup of coffee was 12,847.69 litres (2,826.09 UK gal; 3,394 US gal) and was made by PuertoRicoIsCoffee.com (Puerto Rico) at the Puerto Rico Coffee Expo 2011 in San Juan, Puerto Rico. The coffee cup measured 3 m (10 ft) tall and 2.32 m (7.6 ft) in diameter and had a circumference of 7.18 m (23 ft 6.5 in).