• Satoshi Nakamoto began working on the ₿itcoin concept.

August

• Neal Kin, Vladimir Oksman, and Charles Bry file an application for an
  encryption patent application.
• Bitcoin.org was registered at anonymousspeech.com.

October

• Nakamoto describes the ₿itcoin currency and solves the problem of double
  spending.

November

• The ₿itcoin project is registered on SourceForge.net.

January

• Block 0 is established.
• Version 0.1 of ₿itcoin is released.
• The first ₿itcoin transaction.

October

• An exchange rate is established.

December

• Version 0.2 is released.
• The difficulty increases.

February

• The ₿itcoin Market is established as a ₿itcoin currency exchange.
• Encryption patent is published.

May

• The first real-world transaction using 10,000 BTC spent on pizza.

July

• Version 0.3 released.
• In five days, the price grew 1000%, rising from $0.008
  to $0.08 for 1 bitcoin.
• The MtGox ₿itcoin currency exchange market is established.

August

• Exploit generates 184 billion ₿itcoins.

October

• Financial task force issues warning.
• The first public version of an OpenCL miner is released.

November

• Market cap exceeds $1 million USD.

December

• ₿itcoind compiled for Nokia N900.
• First mobile ₿itcoin transaction.
• Difficulty increases.

January

• Silk Road opens for business.
• 25% of total ₿itcoins generated.

February

• ₿itcoin reaches parity with US dollar.
• WeUseCoins.com is created.

March

• Second largest decrease in difficulty.
• Britcoin opens for trading.
• ₿itcoin Brasil opens.

April

• ₿itcoin passes parity with Euro.
• Difficulty surpasses 100,000.

June

• ₿itcoin Market drops PayPal.
• The largest percentage price decrease to-date became known as the Great
  Bubble of 2011. Top of bubble at $31.
• WikiLeaks starts accepting ₿itcoin.
• Major breach of security at MtGox.
• Difficulty passes 1 million.

August

• ₿itcoin Conference and World Expo in New York City, NY.
• P2Pool mines its first block.
• Back-to-back drop in difficulty.

September

• Casascius coins mint physical ₿itcoins.

November

• ₿itcoin & Future Technology European Conference in Prague, Czech
  Republic.

December

• $2 minimum price after the first price drop.

September

• London 2012 ₿itcoin Conference.
• ₿itcoin Foundation begins.

December

• Slowly rising for a year. Price at $13.

February

• Version 0.8 released.
• ₿itcoin goes up to $30.

March

• ₿itcoin spikes to $74.90.
• Market cap reaches $1 billion.

April

• ₿itcoin surpasses $100.
• Price hits an all-time high of $266.
• ₿itcoin Central is hacked.

May

• First ₿itcoin ATM unveiled.
• ₿itcoin Central gets hacked again.

October

• FBI shuts down Silk Road.
• ₿itcoin price drops from $139 to $109.71 in
  less than three hours after Silk
  Road closure, recovers.

November

• ₿itcoin price surges to a new all-time record of $1242.

December

• Price crashed to $600, rebounded to $1000,
  crashed again to the $500 range. Stabilized in between.
• Chinas Central Bank bans ₿itcoin transactions.
• The network exceeded 10 petahash/sec.

January

• Price spiked to $1000, then settled in the
  $800–$900range.

March

• Version 0.9 released.

June

• The network exceeded 100 petahash/sec.

December

• Microsoft began to accept bitcoin to buy Xbox games and Windows apps.

February

• Version 0.10 released.

July

• Version 0.11 released.

November

• 2015 record high of $504.

January

• Price at $1150 per bitcoin.
• Price fell 30% in a week, reaching a multi-month low of $750.
• The network exceeded 1 exahash/sec.

February

• Version 0.12 released.

April

• Steam started accepting bitcoin as payment.

August

• Version 0.13 released.

September

• There are 770 bitcoin ATMs worldwide.

March

• Version 0.14 released.
• The price of 1 bitcoin surpassed the spot price of an ounce of gold for
  the first time.
• The number of GitHub projects related to bitcoin passed 10,000.
• Price traded above $1290.

April

• Japan Declares ₿itcoin as Legel Tender

August

• ₿itcoin “splits” into ₿itcoin (BTC) and ₿itcoin Cash (BCH)

November

• ₿itcoin for the first time hit $10,000

December

• On 6 December 2017 the software marketplace Steam announced that it
  would no longer accept bitcoin as payment for its products, citing slow
  transactions speeds, price volatility, and high fees for transactions.
• all-time high of $19,783.06 reached on 17
  December 2017.

January

• On 22 January 2018, South Korea brought in a regulation that requires
  all the bitcoin traders to reveal their identity, thus putting a ban on
  anonymous trading of bitcoins.
• On 24 January 2018, the online payment firm Stripe announced that it
  would phase out its support for bitcoin payments by late April 2018,
  citing declining demand, rising fees and longer transaction times as the
  reasons.

June

• Coinrail and
  Bithumb
  cryptocurrency exchanges hacks

July

• On 1 July 2018, bitcoin´s price was $6,343.
• Bancor cryptocurrency exchanges hack.

January

• The price on January 1, 2019 was $3,747

February

• The price on February 1, 2019 was $3,999

March

• The price on March 1, 2019 was $4,081

April

• The price on April 1, 2019 was $5,181

Mai

• The price on Mai 1, 2019 was $8,287

June

• The price on June 1, 2019 was $10,908

Juli

• The price on Juli 1, 2019 was $9,506

August

• The price on August 1, 2019 was $9,487

September

• the Intercontinental Exchange (the owner of the NYSE) began trading of
  bitcoin futures on its exchange called Bakkt. Bakkt also announced that
  it would launch options on bitcoin in December 2019.
• The price on September 1, 2019 was $8,085

October

• The price on October 1, 2019 was $8,343.28

November

• The price on November 1, 2019 was $9,261.10

December

• The price on December 1, 2019 was $7,424.29

January

• The price on January 1, 2020 was $7,200.17

February

• The price on February 1, 2020 was $9,392.88

March

• The price on March 1, 2020 was $8,562.45

April

• The price on April 1, 2020 was $6,202.37

Mai

• The price on Mai 1, 2020 was $8,864.77

June

• The price on June 1, 2020 was $10,167.27

Juli

• On July 15, 2020, between 20:00 and 22:00 UTC, reportedly 130 high-profile Twitter accounts were
  compromised by outside parties to promote a bitcoin scam
• The price on Juli 1, 2020 was $9,228.33

August

• 11th August: MicroStrategy Adopts Bitcoin as Primary Treasury Reserve Asset acquiring 21,454
  bitcoins.
• The price on August 1, 2020 was $11,759.59

September

• On September 16th the Kraken Exchange became the first cryptocurrency firm to become a bank after
  the Wyoming Banking Board voted to approve its
  application for a special purpose depository institution (SPDI) charter.
• Uniswap launches its governance token.
• The price on September 1, 2020 was $11,970.48

October

• Square  has purchased approximately 4,709 bitcoins at an aggregate purchase price of $50
  million.
• The price on October 1, 2020 was $10,619.45

November

• PayPal users in the U.S. can buy, sell and hold select Cryptocurrencies directly through PayPal
  using their Cash or Cash Plus account. Users will be able to learn about Crypto, track crypto
  prices, all without leaving the PayPal app.
• The price on November 1, 2020 was $13,737.11

December

• Coinbase facilitated MicroStrategy’s $425 million investment in Bitcoin.
• The price on December 1, 2020 was $18,803.00

Today

• At the moment, one bitcoin cost: $18,803.00