The verdict arrived by text one morning in late July: After comparing papers from the 12 suspects to the Bitcoin white paper, Mr. Cafiero’s stylometry program showed Mr. Back as the closest match. But he said it wasn’t a snug fit and that Mr. Finney was a very close second. In fact, the difference between them was barely distinguishable, he said, and he considered the overall result inconclusive.
This quote suggests both!