According to data from Glassnode, the number of Bitcoins held by entities for more than seven years without being sold has increased by 422,430 since January 1, pushing Bitcoin's "illiquid supply" to a record high of 14.3 million. Bitcoin's current circulating supply is approximately 19.92 million, meaning that more than 72% of all mined Bitcoins are classified as illiquid. (Cointelegraph)