Jack Dorsey Steps Down as Twitter CEO

Jack Dorsey stepped down as Twitter chief executive on November 29. His departure was notable in Bitcoin history because he remained chief executive of Square, soon renamed Block, where several Bitcoin-focused initiatives were already underway; the resignation itself did not state that Bitcoin was the reason for leaving Twitter.

The event is retained as a recognizable cultural marker of the period. Its value is in reconstructing how Bitcoin and the wider digital-asset phenomenon were being discussed and experienced in 2021, without implying a protocol or legal effect that the event did not have.

Placed in the broader 2021 chronology, the event helps show how Bitcoin was simultaneously becoming a subject of institutional finance, public policy, technology development and mass culture. Its inclusion reflects the specific historical development described above rather than a claim that every related market reaction was caused by this event alone.