"The Information Commissioner's Office (ICO) said the penalty was related to the loss of a hard drive containing the details of almost 3,000 prisoners at Erlestoke prison in Wiltshire.
The disk was not encrypted."
"But Chia's replacement for bitcoin's energy-intensive "proof of work" system, called "proof of space and time", instead requires users to devote massive amounts of hard drive space to generating and storing random numbers, with rewards doled out to those with the most space used up"