Over 250 Bitcoin (BTC) mined in the early days of the network moved after laying dormant for 15 years.The Bitcoins, worth nearly $16 million, were transferred from the Satoshi era and moved to fresh wallets.It is unknown if the same entity is behind all the transactions, and the coins are being transferred to a cryptocurrency exchange.Around 74% of all Bitcoin has not moved for at least six months, indicating investors holding onto their assets despite price fluctuations.