The Dark Overlord initially threatened to release the 10GB of data unless the hacked firms paid an unspecified bitcoin ransom. However, on Wednesday, the group announced a "tiered compensation plan" in which the public could make bitcoin payments to unlock the troves of documents.

A day later, the Dark Overlord said that it had received more than $12,000 in bitcoin – enough to unlock "layer 1" and several "checkpoints," comprised of 650 documents in total.

https://www.rt.com/usa/448058-dark-overlord-leaks-11-september/