The message, hastily scrawled on a yellow legal pad by Christian Langalis, gained instant notoriety when it appeared behind Yellen during a televised House Financial Services Committee hearing in July 2017.

This moment was a significant milestone in Bitcoin's journey as it symbolized the cryptocurrency's growing presence in the global monetary landscape and its ability to attract the attention of a large audience.

Langalis, who was a 22-year-old intern at the Cato Institute at the time, was escorted from the hearing room for violating committee rules. However, the effect of his actions was immediate and far-reaching. CNBC reported that after the poster appeared, the price of Bitcoin rose 3.7%, reaching over $2,418.

The auction took place at the PubKey bar in New York and was organized by the Scarce.City auction house. The lot price was 16 BTC, which is a little more than $1 million according to today’s quotes.

The poster's new owner is a bidder going by the pseudonym "Squirrekkiras" or "Justin," who is described as "the Bitcoin OG no one has ever heard of."

Christian Langalis, now known as "The Bitcoin Guy," said proceeds from the auction will be used to fund his startup Tirrel Corp, which is developing the Bitcoin Lightning network wallet on Urbit.

The Lightning Network is a layer-2 solution designed to improve the scalability and speed of Bitcoin transactions, while Urbit is a decentralized personal server platform.

The item up for auction was not just the piece of paper with the inscription, but also the yellow legal pad on which it was written. The notebook contains Langalis's notes from the hearings, as well as mock-up drawings of the sign, which provide a unique insight into the moments leading up to the famous photobomb.

Although the handwritten signature page was removed from the notebook shortly after the hearing, it was reattached using clear archival wire, ensuring its preservation as part of Bitcoin history.

Prior to this record-breaking auction, Langalis had created and sold 21 copies of the mark in 2019, which averaged 0.8 BTC each, equivalent to approximately $51,300 in today's dollars.

These copies have found homes in the offices of prominent venture capital firms such as Paradigm, Blockchain Capital and Castle Island Ventures, as well as the think tank Coin Center.