Anniversary · 28 March · THE CHRONICLE
At 05:15 GMT, Bitcoin’s market capitalization exceeds $1 billion for the first time. One bitcoin costs just over $91. A little over four years after block 0.
BILLION DAY · BITCOIN MAGAZINE · 28.03.2013
Turn it over, answer, sign – free, no account.
Source
Fact · Bitcoin Magazine, “Bitcoin Market Cap Hits $1 Billion”, 28 March 2013 – secondary source
The question on the back
When did you first take Bitcoin truly seriously?