A piece of notebook paper with the words "Buy Bitcoin" written on it that appeared in the background of a broadcast by US Federal Reserve Chairman Janet Yellen in 2017 has been sold for 16 BTC, or about $1.027 million, CryptoPotato reported. The sale was held at PubKey, a Bitcoin-themed bar in New York City, and was organized and facilitated by auction house Scarce.City. The highest bidder was a person using the pseudonym "Squirrekkywrath," who acquired the sign during a week-long auction. The auction was organized by Christian Langalis, also known as the "Bitcoin Sign Guy," who posted the sign on the auction platform Scarce.City and attended the event in person. Scarce.City said the sale set a record for the platform. After deducting Scarce City's 15% fee, Langalis expects to receive about $875,000, equivalent to 13.6 BTC. The sign on a yellow legal pad symbolizes the arrival of Bitcoin in the global financial sector. The physical artifact is one of the few widely recognized symbols of Bitcoin, as it is primarily digital. The auctioned notepad also includes Langalis’ original notes and sketches of the logo from that historic day. Proceeds from the auction will support Langalis’ new venture, Tirrel Corp, which is focused on creating a Bitcoin Lightning Network wallet on Urbit.