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Slashdot: Info to Decipher Secret Message in Kryptos Sculpture at CIA HQ Auctioned for Nearly $1M

Info to Decipher Secret Message in Kryptos Sculpture at CIA HQ Auctioned for Nearly $1M
Published on December 01, 2025 at 03:04AM
An anonymous reader shared this report from the Associated Press: The information needed to decipher the last remaining unsolved secret message embedded within a sculpture at CIA headquarters in Virginia sold at auction for nearly $1 million, the auction house announced Friday. The winner will get a private meeting with the 80-year-old artist to go over the codes and charts in hopes of continuing what he's been doing for decades: interacting with would-be cryptanalyst sleuths. The archive owned by the artist who created Kryptos, Jim Sanborn, was sold to an anonymous bidder for $963,000, according to RR Auction of Boston. The archive includes documents and coding charts for the sculpture, dedicated in 1990. Three of the messages on the 10-foot-tall (3-meter) sculpture — known as K1, K2 and K3 — have been solved, but a solution for the fourth, K-4, has frustrated the experts and enthusiasts who have tried to decipher the S-shaped copper screen... One side has a series of staggered alphabets that are key to decoding the four encrypted messages on the other side. "The purchaser's 'long-term stewardship plan' is being developed, according to the auction house."

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