Christie’s made history again last night during its evening sale, An American Place: The Barney A. Ebsworth Collection, at 20 Rockefeller Center in New York. This time, the history was not in the form of a record-setting sale (though the sale brought in $317.8 million), but as the first major art auction to be recorded by distributed ledger technology. Christie’s teamed with Artory, a company that operates an art-focused, blockchain-based registry, to securely register and track the provenance of over 90 artworks that were offered in the sale.