Fun fact of the day

1975-04-05 Satoshi's Birthday Satoshi Nakamoto listed their birthday as April 5, 1975. Many have speculated about symbolic significance of this date, with some identifying April 5 as the date that FDR signed Executive Order 6102, and 1975 as the year that Americans were legally allowed to old gold again, after Nixon's 1971 ban.

1976-11-01 Diffe-Hellman Day On this day in 1976, Whitfield Diffie and Martin E. Hellman released their proposal for a breakthrough in cryptographic communication: the first implementation of public/private key pairs for secure communication over public channels. This cryptographic building block is one of the key underpinnings of the Bitcoin network. Read their 1976 paper titled "New Directions in Cryptography" here.

1984-05-01 I don't believe we shall ever have good money again before we take it out of the hands of government. We can't take it violently. All we can do is by some sly, roundabout way introduce something they can't stop. Friedrich Hayek Read more

1995-02-01 There has never been a government that didn?t sooner or later try to reduce the freedom of its subjects and gain more control over them, and there probably will never be one. Therefore, instead of trying to convince our current government not to try, we?ll develop the technology that will make it impossible for the government to succeed. Wei Dai Read more

2008-10-31 Nodes are not going to accept an invalid transaction as payment, and honest nodes will never accept a block containing them. Satoshi Nakamoto Read more

2008-10-31 The network is robust in its unstructured simplicity. Satoshi Nakamoto Read more

2008-10-31 The steady addition of a constant of amount of new coins is analogous to gold miners expending resources to add gold to circulation. In our case, it is CPU time and electricity that is expended. Satoshi Nakamoto Read more

2008-10-31 Bitcoin Whitepaper Day On this day in 2008, Satoshi Nakamoto released the Bitcoin white paper to the cryptography mailing list, marking its official introduction into the world. Satoshi introduced Bitcoin as an electronic cash system with several important properties: double-spending prevention, no trusted parties, anonymous participation, and Hashcash style Proof-of-Work. The Bitcoin Whitepaper can be viewed here.

2008-11-07 Governments are good at cutting off the heads of centrally controlled networks like Napster, but pure P2P networks like Gnutella and Tor seem to be holding their own. Satoshi Nakamoto Read more

2008-11-08 As computers get faster and the total computing power applied to creating bitcoins increases, the difficulty increases proportionally to keep the total new production constant. Satoshi Nakamoto Read more

2008-11-08 Coins have to get initially distributed somehow, and a constant rate seems like the best formula. Satoshi Nakamoto Read more

2008-11-08 I like the idea of basing security on the assumption that the CPU power of honest participants outweighs that of the attacker. It is a very modern notion that exploits the power of the long tail. Hal Finney Read more

2008-11-08 I had to write all the code before I could convince myself that I could solve every problem, then I wrote the paper. Satoshi Nakamoto Read more

2008-11-08 I ... do think that there is potential value in a form of unforgeable token whose production rate is predictable and can't be influenced by corrupt parties. Hal Finney Read more

2008-11-08 The proof-of-work chain is the solution to the synchronisation problem, and to knowing what the globally shared view is without having to trust anyone. Satoshi Nakamoto Read more

2009-01-03 The Times 03/Jan/2009 Chancellor on brink of second bailout for banks. Satoshi Nakamoto See in blockchain explorer

2009-01-03 Bitcoin's Birthday On this day in 2009, the Genesis Block was mined by Satoshi Nakamoto, officially starting the Bitcoin blockchain.

2009-01-03 Bitcoin Genesis Block See in blockchain explorer Read more

2009-01-03 Coinbase transaction of the Genesis Block See in blockchain explorer Read more

2009-01-10 Running bitcoin. In a tweet announcing his experimentation with the Bitcoin software, as possibly the first person after Satoshi to run it. Hal Finney Read more

2009-01-11 Genesis Transaction Day On this day in 2009, the first transaction ever broadcast over the Bitcoin network was sent by Satoshi Nakamoto to Hal Finney. See in blockchain explorer

2009-01-12 First block containing a non-coinbase transaction See in blockchain explorer Read more

2009-01-12 First transfer of bitcoin See in blockchain explorer

2009-01-16 It might make sense just to get some in case it catches on. If enough people think the same way, that becomes a self fulfilling prophecy. Satoshi Nakamoto Read more

2009-01-16 First send to a Pay-to-Public Key Hash (P2PKH) address See in blockchain explorer Read more

2009-02-11 The root problem with conventional currency is all the trust that's required to make it work. Satoshi Nakamoto Read more

2009-02-11 The central bank must be trusted not to debase the currency, but the history of fiat currencies is full of breaches of that trust. Satoshi Nakamoto Read more

2009-02-11 With e-currency based on cryptographic proof, without the need to trust a third party middleman, money can be secure and transactions effortless. Satoshi Nakamoto Read more

2009-02-18 [Bitcoin is] more typical of a precious metal. Instead of the supply changing to keep the value the same, the supply is predetermined and the value changes. Satoshi Nakamoto Read more

2009-10-12 First bitcoin traded for fiat currency See in blockchain explorer Read more

2009-11-25 For greater privacy, it's best to use bitcoin addresses only once. Satoshi Nakamoto Read more

2009-11-25 The possibility to be anonymous or pseudonymous relies on you not revealing any identifying information about yourself in connection with the bitcoin addresses you use. Satoshi Nakamoto Read more

2009-12-10 [Lost] coins can never be recovered, and the total circulation is less. Since the effective circulation is reduced, all the remaining coins are worth slightly more. It's the opposite of when a government prints money and the value of existing money goes down. Satoshi Nakamoto Read more

2009-12-10 The design and coding [of Bitcoin] started in 2007. Satoshi Nakamoto Read more

2009-12-12 Being open source means anyone can independently review the code. If it was closed source, nobody could verify the security. I think it's essential for a program of this nature to be open source. Satoshi Nakamoto Read more

2009-12-12 [Mining is] easy now but it'll get harder as the network grows. Satoshi Nakamoto Read more

2009-12-12 There are more coming. Discussing new exchanges and payment systems joining the network Satoshi Nakamoto Read more

2010-02-14 I'm sure that in 20 years there will either be very large transaction volume or no volume. Satoshi Nakamoto Read more

2010-02-14 In a few decades when the reward gets too small, the transaction fee will become the main compensation for nodes. Satoshi Nakamoto Read more

2010-05-22 Bitcoin Pizza Day On this day in 2010, Laszlo Hanyecz, paid Jeremy Sturdivant 10,000 BTC for two pizzas costing ~41 USD. The famous "Bitcoin Pizza" transaction was one of the earliest real-world BTC transactions and is celebrated as helping start the Bitcoin economy.

2010-05-22 The "Bitcoin Pizza" transaction See in blockchain explorer Read more

2010-06-17 The nature of Bitcoin is such that once version 0.1 was released, the core design was set in stone for the rest of its lifetime. Satoshi Nakamoto Read more

2010-06-21 Lost coins only make everyone else's coins worth slightly more. Think of it as a donation to everyone. Satoshi Nakamoto Read more

2010-07-29 If you don't believe it or don't get it, I don't have the time to try to convince you, sorry. In response to a disagreement about 10-minute block settlement Satoshi Nakamoto Read more

2010-07-29 Early transaction with MANY (4,000+) OP_CHECKSIG commands, before this DoS vector was fixed See in blockchain explorer Read more

2010-08-07 Proof-of-work has the nice property that it can be relayed through untrusted middlemen. Satoshi Nakamoto Read more

2010-08-07 It doesn't matter who tells you a longest chain, the proof-of-work speaks for itself. Satoshi Nakamoto Read more

2010-08-07 The utility of the exchanges made possible by Bitcoin will far exceed the cost of electricity used. Therefore, not having Bitcoin would be the net waste. Satoshi Nakamoto Read more

2010-09-30 We shouldn't be counting or spending transactions until they have at least 1 confirmation... unconfirmed transactions are very much second class citizens. Satoshi Nakamoto Read more

2010-11-10 No one has found the bottom of the Bitcoin rabbit hole. Jameson Lopp Read more

2010-11-14 Duplicated coinbase transaction #1 See in blockchain explorer Read more

2010-11-14 Duplicated coinbase transaction #2 See in blockchain explorer Read more

2010-12-01 I see Bitcoin as ultimately becoming a reserve currency for banks... Hal Finney Read more

2010-12-05 The project needs to grow gradually so the software can be strengthened along the way. Read more

2010-12-12 Goodbye Satoshi Day On this day in 2010, Satoshi sent his final message on the BitcoinTalk forum. Then, he logged off, never to return.

2011-01-01 Ultimately it?s good for the network for mining to be expensive. It makes it that much harder for a well financed attacker to dominate the network. Hal Finney Read more

2011-03-01 For Bitcoin to succeed and become secure, bitcoins must become vastly more expensive. Hal Finney Read more

2011-05-18 Midnightmagic's 'Missing Satoshi' (provably lost/destroyed bitcoin) See in blockchain explorer Read more

2011-06-04 Every day that goes by and Bitcoin hasn't collapsed due to legal or technical problems, that brings new information to the market. It increases the chance of Bitcoin's eventual success and justifies a higher price. Hal Finney Read more

2011-07-05 Writing a description for this thing for general audiences is bloody hard. There's nothing to relate it to. lam enting the difficulty of capturing the essence of Bitcoin succinctly Satoshi Nakamoto Read more

2011-07-18 Mt Gox's 'Proof of Solvency' transaction See in blockchain explorer Read more

2011-11-04 Bitcoin Logo Day On this day in 2010, an unknown artist under the username "bitboy" offered the Bitcoin community its iconic logo for free on the Bicointalk forum. You can view the original post here.

2011-11-16 Current largest output transaction See in blockchain explorer Read more

2011-12-03 Brainwallet address for 'Satoshi Nakamoto' See in blockchain explorer Read more

2012-01-30 First send to a Pay-to-MultiSig (P2MS) output See in blockchain explorer Read more

2012-03-07 First experimental (pre-activation) send to a Pay-to-Script Hash (P2SH) output, before the P2SH soft-fork activated See in blockchain explorer Read more

2012-04-08 First *post-activation* send to a P2SH output See in blockchain explorer Read more

2012-11-28 Halving #1 Day On this day in 2012, the first-ever "Halving" cut the subsidy from 50 BTC to 25 BTC.

2012-11-28 First block of subsidy era #2 (25 BTC) See in blockchain explorer Read more

2013-02-24 Mt. Gox Death Day On this day in 2013, Mt. Gox, the largest bitcoin exchange in the world, went offline due to insolvency, after losing 640,000 BTC.

2013-03-18 I am very intrigued by Bitcoin. It has all the signs. Paradigm shift, hackers love it, yet it is described as a toy. Just like microcomputers. Paul Graham Read more

2013-03-19 ...the price gyrations of bitcoins are entertaining to me. Hal Finney Read more

2013-03-24 Last 'Version 1' block See in blockchain explorer Read more

2013-03-28 Billion Dollar Day On this day in 2013, the market cap of all BTC surpassed 1 billion USD for the first time.

2013-04-06 Bitcoin whitepaper, embedded in the Bitcoin blockchain See in blockchain explorer Read more

2013-04-29 Bitcoin may be the TCP/IP of money. Paul Buchheit Read more

2013-05-02 Bitcoin ATM Day On this day in 2013, the first-ever Bitcoin ATM was installed at a Vancouver coffee shop. It included a built-in palm scanner designed to prevent users from processing more than 3,000 CAD per day.

2013-09-13 SHA1 collision bounty See in blockchain explorer Read more

2013-09-13 SHA256 collision bounty See in blockchain explorer Read more

2013-09-13 RIPEMD160 collision bounty See in blockchain explorer Read more

2013-09-13 RIPEMD160(SHA256()) collision bounty See in blockchain explorer Read more

2013-09-13 SHA256(SHA256()) collision bounty See in blockchain explorer Read more

2013-10-01 Free Ross Day On this day in 2013, Ross Ulbricht was captured and imprisoned for his role in creating The Silk Road website. He was given two life sentences for non-violent crimes. Fighting for Ross's freedom is a cause supported by many Bitcoiners.

2013-11-05 Never gonna give you up... See in blockchain explorer Read more

2013-12-18 I AM HODLING. GameKyuubi Read more

2013-12-18 HODL Day On this day in 2013, a user on the bitcointalk.org declared I AM HODLING (!), rather than selling, despite the falling price. This "whisky"-facilitated post spawned one of Bitcoin's great memes.

2014-06-16 Star Wars: A New Hope See in blockchain explorer

2014-10-06 BearWhale Slay Day On this day in 2014, a bitcoin whale posted a 30,000 BTC sell wall, resulting in an epic skirmish between hodlers and the BearWhale. Over the course of six hours, the price stalled at 300 USD until all of the coins sold off and the BearWhale was defeated. You can watch the battle here.

2014-11-11 This is Gentlemen! Day On this day in 2014, an over-excited Reddit user accidentally omitted a word and unknowingly earned a bizarre place in Bitcoin culture and lore. Read the Reddit daily discussion on Bitcoin Markets here.

2015-06-21 Value provably destroyed in OP_RETURN output See in blockchain explorer Read more

2015-07-07 The Megatransaction See in blockchain explorer Read more

2016-04-14 If it's your keys, it's your bitcoin. If it's not your keys, it's not your bitcoin! That's a lesson that we all learned during Gox, so...let's try not to have to be taught that lesson again. Andreas Antonopolous Read more

2016-07-09 Halving #2 Day On this day in 2016, the second "Halving" cut the subsidy from 25 BTC to 12.5 BTC.

2016-07-09 First block of subsidy era #3 (12.5 BTC) See in blockchain explorer Read more

2017-02-08 First step to understanding Bitcoin: admitting you don't understand Bitcoin. Jameson Lopp Read more

2017-03-03 Gold Parity Day On this day in 2017, 1 BTC surpassed the price of 1 ounce of gold for the first time.

2017-08-01 Bitcoin Independence Day (UASF Day) On this day in 2017, members of the community scheduled activation of a User-Activated Soft Fork (UASF) in a modified version of the Bitcoin Core software. This modification represented an ultimatum to SegWit-reluctant miners: either signal for SegWit activation or your blocks will be ignored. This community effort seemingly called the miners "SegWit2X bluff" and resulted in SegWit activation on the network in short order. Read more here.

2017-08-08 SegWit Lock-In Day On this day in 2017, the Segregated Witness upgrade was locked in on the Bitcoin network by the UASF client.

2017-08-23 SegWit Activation Day On this day in 2017, at 1:57 UTC, SegWit activated on the Bitcoin mainnet in Block #481,824.

2017-08-24 First SegWit block See in blockchain explorer Read more

2017-08-24 First SegWit transaction See in blockchain explorer Read more

2017-08-24 First send to a Pay-to-Witness Script Hash (P2WSH) output See in blockchain explorer Read more

2017-08-24 First send to a Pay-to-Witness Public Key Hash (P2WPKH) output See in blockchain explorer Read more

2017-08-25 First > 1MB block See in blockchain explorer Read more

2017-12-12 I don't think we can affort two proof-of-work systems on this planet, but I think we might only need one. Andreas Antonopolous Read more

2017-12-12 We need one planetary scale proof-of-work system to offer us true, energy-dependent immutability. But maybe we can only afford one. Turns out, that might be Bitcoin's killer app. Andreas Antonopolous Read more

2017-12-30 Block reward lost See in blockchain explorer Read more

2018-01-20 First > 2MB block See in blockchain explorer Read more

2018-02-10 By attaching energy to a block, we give it 'form', allowing it to have real weight & consequences in the physical world. https://twitter.com/hugohanoi Read more

2018-02-25 Lightning Pizza Day On this day in 2018, eight years after buying pizza with the famous "Bitcoin Pizza" transaction, Laszlo Hanyecz returned to buy pizza over the Lightning Network.

2018-04-01 History shows it is not possible to insulate yourself from the consequences of others holding money that is harder than yours. From The Bitcoin Standard. Saifedean Ammous Read more

2018-04-02 One of the greatest things that Satoshi did was disappear. Jimmy Song Read more

2018-04-02 Decentralized digital scarcity is the real innovation... Bitcoin was the first, and... continues to be the only such coin. Jimmy Song Read more

2018-12-28 For people living under authoritarian governments, Bitcoin can be a valuable financial tool. Alex Gladstein Read more

2019-01-03 Proof of Keys Day On this day in 2019, to celebrate Bitcoin's 10th Birthday, Trace Mayer started an annual Proof-of-Keys Celebration. Participats declare monetary sovereignty by withdrawing their BTC into their own custody. Not your keys, not your bitcoin! You can read Trace Mayer's original tweet here.

2019-03-13 Bitcoin is a way out of our current system, which is exclusionary and unjust, and tends to prey on the weak and disenfranchised while letting the corrupt Davos crowd walk free. Alex Gladstein Read more

2019-04-02 Stay Humble. Stack Sats. Matt O'Dell Read more

2019-06-26 Decentralized and private payments are a necessary innovation for a digital future where we retain our civil liberties and personal freedoms. Alex Gladstein Read more

2019-07-02 The twin pillars of Bitcoin's value proposition: (1) It's possible to secure and transport your wealth without anyone's permission (2) Your wealth cannot be debased. Everything else is noise. Vijay Boyapati Read more

2019-07-17 There is no capacity to kill Bitcoin. Patrick McHenry (US Representative) Read more

2019-09-07 You may deride Bitcoin, no matter. Bitcoin will be there for you when you need it. Nic Carter Read more

2019-09-07 Bitcoin is absolutely profane, so much so that it hardly bears contemplation. It challenges the State?s most treasured privilege: its ability to finance itself through inflation and seignorage. Nic Carter Read more

2019-10-09 [Bitcoin is] a claim on the future productivity of the planet, in perpetuity, discounted to the present. Trace Mayer Read more

2019-10-18 Tick tock, next block. Brady Swenson Read more

2019-12-17 First experimental (pre-activation) mainnet send to a Pay-to-Taproot (P2TR) output See in blockchain explorer Read more

2020-01-06 Bitcoin endures because the engineers that build it expect the unexpected. Money is a dangerous game, and any weaknesses, no matter how small, will be exploited. Neil Woodfine Read more

2020-03-11 500+ million USD transferred for < 1 USD fee (2020 prices) See in blockchain explorer

2020-05-01 This thing is not a toy anymore, and it?s maybe not an asset anymore as well. It is going to be much bigger than that. Plan B Read more

2020-05-11 Halving #3 Day On this day in 2020, the third "Halving" cut the subsidy from 12.5 BTC to 6.25 BTC.

2020-05-11 First block of subsidy era #4 (6.25 BTC) See in blockchain explorer Read more

2020-05-11 Times 09/Apr/2020 With $2.3T Injection, Fed's Plan Far Exceeds 2008 Rescue' See in blockchain explorer

2020-05-20 Very old coins (mined ~1 month after genesis) move unexpectedly, causing uproar See in blockchain explorer Read more

2020-05-21 Bitcoin is radically changing the world by being unchangeable. Robert Breedlove Read more

2020-06-04 #bitcoin blockchain is the new wonder of the world, more work and human ingenuity, than went into the great pyramids of Egypt. The biggest computation ever done, a digital monument, a verifable artefact of digital gold - the foundation of a new digital age. Adam Back Read more

2020-07-15 July 2020 Twitter hack BTC address See in blockchain explorer Read more

2020-09-07 The more loathsome people that use bitcoin, the better. The more it works even if teeming with people that mutually despise each other, the more faith I have in its ability to protect us all. Nic Carter Read more

2021-01-29 In retrospect, it was inevitable See in blockchain explorer Read more

2021-01-31 Transaction output values used to encode botnet command-and-control IP address See in blockchain explorer Read more

2021-02-19 Trillion Dollar Day On this day in 2021, the market cap of all BTC surpassed 1 trillion USD for the first time, ~8 years after surpassing 1 billion USD for the first time.

2021-02-23 Anybody who says they can?t afford #Bitcoin is missing the point. Cedric Youngelman Read more

2021-03-12 If nuclear war destroyed half of our planet, [Bitcoin] would continue to live, uncorrupted. Ralph Merkle Read more

2021-04-14 NYTimes 10/Mar/2021 House Gives Final Approval to Biden's $1.9T Pandemic Relief See in blockchain explorer Read more

2021-06-05 I don't think there is anything more important in my lifetime to work on [than Bitcoin]. At the Bitcoin 2021 conference; in 'Banking the Unbanked'. Jack Dorsey Read more

2021-06-05 Bitcoin changes absolutely everything. At the Bitcoin 2021 conference; in 'Banking the Unbanked'. Jack Dorsey Read more

2021-06-05 For the first time in human history, we can grant property rights to 8 billion people. At the Bitcoin 2021 conference; in the Fireside chat with Max Keiser. Michael Saylor Read more

2021-06-05 We don't need the banks anymore. At the Bitcoin 2021 conference; in 'Banking the Unbanked'. Jack Dorsey Read more

2021-06-05 #Bitcoin is the one thing that can't be shutdown. A beacon of freedom in a benighted world. Vijay Boyapati Read more

2021-06-05 There is nothing else that compares to Bitcoin. Jack Dorsey Read more

2021-06-07 Diario El Salvador 6/Jun/2021 Bitcoin tendra validez legal See in blockchain explorer Read more

2021-06-13 Taproot Lock-In via "Speedy Trial" mechanism See in blockchain explorer Read more

2021-07-10 Bitcoin is a once in a thousand year monetary innovation and it's too late to ignore that fact. Nik Bhatia Read more

2021-07-23 First experimental (pre-activation) mainnet SPEND (!) of a Pay-to-Taproot (P2TR) output See in blockchain explorer Read more

2021-08-21 Bitcoin Infinity Day 8/21 is playfully celebrated as representing the meme "Everything there is divided by 21,000,000" (?/21M).

2021-09-07 Bitcoin Legal Tender Day On this day in 2021, BTC became legal tender in El Salvador, 90 days after the publication of the law in the official gazette, making El Salvador the first country to enact BTC as legal tender through legistlation.

2021-11-14 First Taproot-enforcing block See in blockchain explorer Read more

2021-11-14 First *post-activation* Pay-to-Taproot (P2TR) transaction in Bitcoin's history See in blockchain explorer Read more

2021-11-14 First post-activation mainnet spend of a Pay-to-Taproot (P2TR) output See in blockchain explorer Read more

2021-11-14 First use of OP_CHECKSIGADD See in blockchain explorer Read more

2021-12-06 Far-future dated Locktime value See in blockchain explorer

2022-01-13 Unspendable output due to invalid public key See in blockchain explorer Read more

2022-05-12 There is no link between the informational realm and the physical realm. Proof of work is the only thing that creates this link in a probabilistic fashion, because it creates information that speaks for itself. Gigi Read more

2022-05-18 Lightning Network penalty transaction See in blockchain explorer Read more

2022-06-24 It seems that #bitcoin attracts a great number of very technically gifted people... It also seems to pull in people that are more likely to ask questions or develop their own opinion, and want to make a difference. Adam Back Read more

2022-10-09 @brqgoo's 998-of-999 tapscript multisig See in blockchain explorer Read more

2022-11-01 @brqgoo's (second) LND-breaking transaction See in blockchain explorer Read more

2022-11-17 Bitcoin is the most valuable, most secure, and most credibly neutral internet-native asset in the world. Andrew M. Bailey and Craig Warmke Read more

2022-11-17 Bitcoin is King. Andrew M. Bailey and Craig Warmke Read more

2022-12-09 Humans are driven by incentives. #Bitcoin is a monetary system, but it?s also an incentive for humans to master energy. Brandon Quittem Read more

2022-12-14 Ordinals Inscription #0 Read more

2022-12-19 The best way to make Bitcoin fail is to believe that its success is guaranteed... The big compromise in a strongly decentralized system is that it's all of our jobs to look out for it. Greg Maxwell Read more

2023-04-05 Bitcoin is a peaceful protest against the financial system that has failed us. Jimmy Song Read more

2023-04-27 Amidst a sea of rent-seeking "cryptocurrencies" created by opportunistic venture capitalists, bitcoin stands alone as neutral, immutable money with rules, but no single ruler. Nik Bhatia and Joe Consorti Read more