The Twitter CEO shared a link Friday afternoon to a platform called “Valuables,” where his March 21, 2006 tweet “just setting up my twttr” was up for bidding. The highest offer is from Sina Estavi, CEO of Bridge Oracle, for $2.5m as of Saturday afternoon.
Dorsey has also been an advocate of digital currencies, displaying ”#bitcoin” in his Twitter bio, so jumping into NFTs seems to be a natural extension. His digital payments company Square also purchased approximately 3,318 bitcoins in late February, expanding on its October 2020 buy of 4,709.
https://www.cnbc.com/2021/03/06/jack-dorsey-is-offering-to-sell-the-first-tweet-as-an-nft.html