The iconic 'Buy Bitcoin' sign held behind Janet Yellen during her televised Congressional testimony in July 2017 has been auctioned off for 16 BTC, or just over $1 million.
In a prior interview with CoinDesk, Christian Langalis, who held up the sign, said the proceeds would go to fund his startup, Tirrel Corp, which is developing a Bitcoin Lightning network wallet on Urbit.
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