2011

Years: 2009 2010 2011 2012 2013

2011

Bitcoin year	3
First block	100410
Blocks solved	59,626
Initial supply	5,020,450 BTC
Bitcoins mined	2,981,300 BTC
Difficulty	14,484 — 1,159,929
Opening price	$0.30 USD
Highest price	$31.91 USD
Lowest price	$0.29 USD
Closing price	$4.70 USD
Market cap	$23.6 million USD
Block value	$235.00 USD
Block reward	50 BTC

2011 was the third year since the launch of Bitcoin. Dollar parity was achieved as Satoshi Nakamoto departed.

Events

January

• 02 – Luke Dashjr standardizes Tonal Bitcoin.
• 08 – Bitcoin Pooled Mining reaches 10 Ghash/s.
• 28 – Block 105000 is mined, meaning the supply of bitcoins reaches 25% of its target.

February

• 09 – Bitcoin achieves dollar parity. 1 bitcoin trades for 1 US dollar on Mt. Gox.
• 10 – News of dollar parity attracts significant attention; bitcoin.org struggles to handle the traffic.
• 14 – For the first time, a vehicle is offered for a sum of bitcoins. It was a 1984 Celica Supra for 3000 BTC. A buyer was never found.

March

• 01 – Jed McCaleb sells Mt. Gox to Mark Karpelès.
• 06 – The network hashrate briefly doubles.
• 18 – BTC/USD exchange rate reaches a 6-week low point at almost $0.70/BTC, after what appeared to be a short burst of possibly automated sales at progressively lower prices. The price had been declining since dollar parity.
• 22 – WeUseCoins publishes What is Bitcoin?, which became a viral hit.
• 25 – Difficulty decreases for the second time ever.
• 27 – Britcoin is established, opening the first Bitcoin exchange for the Pound Sterling.
• 31 – Bitcoin Brazil is established, opening the first Bitcoin exchange for the Brazilian real.

April

• 05 – Bitmarket.eu is established, opening the first Bitcoin exchange for the Polish złoty.
• 12 – The first Bitcoin put option contract is sold on Bitcoin-OTC.
• 16 – TIME publishes an article on Bitcoin.
• 23 – The exchange rate reaches parity with the Euro and Pound Sterling.
• 27 – VirWoX is established, opening the first Bitcoin exchange for the Linden dollar.
• 30 – Difficulty tops 100,000.

June

• 02 – The Mt. Gox exchange rate reaches an all-time high of $10.
• 08 – The 2011 bubble tops at over $30, and pops in the following week.
• 13 – allinvain reports the theft of 25,000 BTC, worth $375,000.
• 19 – Mt. Gox is compromised.^{[clarification needed]}
• 24 – Difficulty tops 1,000,000.