09-September

9/1 2015 - Bitcoin Magazine publishes open letter to the community to communicate a plan of action related to technical consensus and Bitcoin scalability written and signed by many of the Bitcoin developers, including the most prolific contributors to (at least) three separate implementations of the Bitcoin system. Signers of this letter represent about 90 of the commits in the last year or two to Bitcoin Core, according to Greg Maxwell.	
9/2		
QR  2020 - JP Koning - Different bitcoins different prices https://bitcoinwords.github.io/cy20m9#different-bitcoins-different-prices
9/3 2012 - The fourth largest US Bitcoin exchange, Bitfloor, is hacked and loses 24,000 BTC (valued at approximately US$250,000 when the theft took place), which was the majority of the on-hand Bitcoins. Compromised servers result in access to encrypted backup files of wallet keys. All exchange operations are paused.
    2019 - Cryptoadvance releases Specter DIY with support for key generation & recovery, optional passphrase, address verification, single-key signing, displaying master public keys, switching between testnet / regtest / mainnet and somehow working with electrum ( change detection up to address 20 )
QR  2018 - Aaron van Wirdum - Bitcoin as a PrivacyCoin https://bitcoinaudible.com/?p=909
QR  2018 - LaurentMT - The Yin and Yang of Bitcoin https://bitcoinwords.github.io/cy18m9#the-yin-and-yang-of-bitcoin
QR  2020 - Emil Sandstedt - The Costs that Haunt Your Dreams of Hyperbitcoinization https://bitcoinwords.github.io/cy20m11#the-costs-that-haunt-your-dreams-of-hyperbitcoinization
9/4		
QR  2019 - Harold Christopher Burger - Bitcoin's natural long-term power-law corridor of growth https://bitcoinwords.github.io/cy19m9#bitcoins-natural-long-term-power-law-corridor-of-growth
9/5 1979 - Ralph Merkle files patent for "Merkle Tree" . The invention comprises a method of providing a digital signature for purposes of authentication of a message, which utilizes an authentication tree function of a one-way function of a secret number. The patent expired 20 years later on this date in 1999.	
9/6 2011 - Mike Caldwell begins minting physical Bitcoins, naming the coins Casacius Coins.	
QR  2019 - Parker Lewis - Bitcoin, Not Blockchain https://archive.is/G0ECX
QR  2019 - Anthony Pompliano and Michael Goldstein on Bitcoin and the Cantillon Effect https://archive.is/ykazh
QR  2019 - Knut Svanholm - Mainstream Media of Exchange https://bitcoinwords.github.io/cy19m9#mainstream-media-of-exchange
9/7 2010 - "Another option is to reduce the number of free transactions allowed per block before transaction fees are required.  Nodes only take so many KB of free transactions per block before they start requiring at least 0.01 transaction fee. The threshold should probably be lower than it currently is. I don't think the threshold should ever be 0.  We should always allow at least some free transactions."	
QR  2019 - Nic Carter - A Most Peaceful Revolution https://archive.is/P1r7d
9/8 2010 - "The threshold can easily be changed in the future.  We can decide to increase it when the time comes.  It's a good idea to keep it lower as a circuit breaker and increase it as needed.  If we hit the threshold now, it would almost certainly be some kind of flood and not actual use.  Keeping the threshold lower would help limit the amount of wasted disk space in that event."
    2010 - "Currently, paying a fee is controlled manually with the -paytxfee switch.  It would be very easy to make the software automatically check the size of recent blocks to see if it should pay a fee.  We're so far from reaching the threshold, we don't need that yet.  It's a good idea to see how things go with controlling it manually first anyway."
9/9		
QR  2017 - Basic Crypto - How to kill Bitcoin https://archive.is/LziIF 
9/10	
QR  1994 - Tim May - The Cyphernomicon https://archive.is/WUblN
QR  2018 - LaurentMT - Cliffhangers https://bitcoinwords.github.io/cy18m9#cliffhangers
9/11
QR   2014 - Michael Goldstein - Everyone's a Scammer https://archive.is/SzGvj
QR   2018 - Paul Sztorc - Expensive Privacy is Useless Privacy https://bitcoinwords.github.io/cy18m9#expensive-privacy-is-useless-privacy
QR   2019 - Tamás Blummer - Floor on Bitcoin's risk less interest rate https://bitcoinwords.github.io/cy19m9#floor-on-bitcoins-risk-less-interest-rate
QR   2019 - Erik Cason - The Encrypted Meaning of Crypto https://bitcoinwords.github.io/cy19m9#the-encrypted-meaning-of-crypto
9/12	
9/13	
QR   2019 - Dhruv Bansal - Bitcoin Astronomy https://archive.is/6jumi
9/14 2010 - In the name of the Bitcoin Store, jgarzik offers to puddinpop to open source their Windows-based CUDA client. The offer was in the form of 10,000 BTC which was valued at around US$600 to US$650 at the time. 
     2010 - Block 79,764 is the first to be mined using split allocation of the generation reward. 
     2012 - First warrant to seize Bitcoins. U.S. Secret Service seizing Michael M. Brown's bitcoins in the Romney Taxes For Ransom case."	
QR   2018 - Dan Held - PoW is Efficient https://bitcoinwords.github.io/cy18m9#pow-is-efficient
QR   2018 - David Puell- The Essence of Bitcoin https://bitcoinwords.github.io/cy18m9#the-essence-of-bitcoin
9/15 2012 - The London 2012 Bitcoin Conference is held.	
QR   2016 - Elizabeth Stark - Lightning Network https://archive.is/RKuEs
QR   2018 - JP Thor - Bitcoin as a store of energy https://bitcoinwords.github.io/cy18m9#bitcoin-as-a-store-of-energy
QR   2020 - Leo Zhang & Karthik Venkatesh - The Alchemy of Hashpower Part II https://bitcoinwords.github.io/cy20m9#the-alchemy-of-hashpower-part-ii
QR   2020 - Gael Sánchez Smith - Bitcoin is the Most Sustainable Money The World Has Ever Seen https://bitcoinwords.github.io/cy20m11#bitcoin-is-the-most-sustainable-money-the-world-has-ever-seen
9/16 2012 - Bitcoin Conference in London	
QR   2019 - Giacomo Zucco - Discovering Bitcoin – From Cavemen to Lightning, Intro & Part 1 https://bitcoinaudible.com/?p=4587
QR   2020 - Shinobi - Things Bitcoiner's Don't Want To Hear https://bitcoinwords.github.io/cy20m9#things-bitcoiners-dont-want-to-hear
9/17		
QR   2018 - LaurentMT - Electric Money https://bitcoinwords.github.io/cy18m9#electric-money
QR   2019 - Giacomo Zucco - Discovering Bitcoin Part 2 – About People https://bitcoinaudible.com/?p=4591
9/18 2010 - following a contribution by jgarzik, puddinpop releases the source to their windows-based CUDA client under MIT license, open sourced by the Bitcoin Store.
     2010 - Bitcoin Pooled Mining (operated by slush), a method by which several users collectively mine Bitcoins and share in the benefits, mines its first block.
     2018 - CVE-2018-17144, a fix for which was released in Bitcoin Core versions 0.16.3 and 0.17.0rc4, includes both a Denial of Service component and a critical inflation vulnerability."	
QR   2019 - Giacomo Zucco - Discovering Bitcoin Part 3 Introducing Money https://bitcoinaudible.com/?p=4599
9/19 2010 - "I don't know anything about any of the bug trackers.  If we were to have one, we would have to make a thoroughly researched choice. We're managing pretty well just using the forum.  I'm more likely to see bugs posted in the forum, and I think other users are much more likely to help resolve and ask follow up questions here than if they were in a bug tracker.  A key step is other users helping resolve the simple stuff that's not really a bug but some misunderstanding or confusion. I keep a list of all unresolved bugs I've seen on the forum.  In some cases, I'm still thinking about the best design for the fix.  This isn't the kind of software where we can leave so many unresolved bugs that we need a tracker for them."	
QR   2014 - Konrad Graf - Bitcoin: Magic, fraud, or 'sufficiently advanced technology'? https://archive.is/E6Vbj
QR   2017 - Francis Pouliot - Catallaxy: the origins of Bitcoin, innovation and spontaneous order https://archive.is/gEyKs
QR   2018 - Christopher Bendiksen - The Bitcoin Analyst Brain: A Primer https://bitcoinwords.github.io/cy18m9#the-bitcoin-analyst-brain-a-primer
QR   2019 - Giacomo Zucco - Discovering Bitcoin Part 4 – A Wrong Turn & A New Plan https://bitcoinaudible.com/?p=4623
9/20		
QR   2019 - Giacomo Zucco - Discovering Bitcoin Part 5 – Digital Scarcity https://bitcoinaudible.com/?p=4636
QR   2020 - Gigi - On Bitcoin's UX https://archive.is/SAssJ
9/21	
QR   2019 - Giacomo Zucco - Discovering Bitcoin Part 6 – Digital Contracts https://bitcoinaudible.com/?p=4656
9/22	
QR   2018 - JP Thor - Bitcoin as a Store of Value https://bitcoinwords.github.io/cy18m9#bitcoin-as-a-store-of-value
QR   2019 - Giacomo Zucco - Discovering Bitcoin Part 7 – Missing Pieces https://bitcoinaudible.com/?p=4684
9/23 2010 -  "Bitcoin would be convenient for people who don't have a credit card or don't want to use the cards they have, either don't want the spouse to see it on the bill or don't trust giving their number to "porn guys", or afraid of recurring billing."	
9/24 2012 - Phillip Moustakis, a Senior Attorney in the Enforcement Division of the U.S. Securities and Exchange Commission, sends an email that announces an investigation of Bitcoin Savings and Trust after allegations were made that the Ponzi scheme decreased the value of Bitcoins by as much as 30 percent.	
9/25	
QR   2018 - Misir Mahmudov - Mass adoption of Bitcoin is inevitable https://bitcoinwords.github.io/cy18m9#tweetstorm-mass-adoption-of-bitcoin-is-inevitable
QR   2019 - Christopher Bendiksen - A Note on Variance in Bitcoin Mining https://bitcoinwords.github.io/cy19m9#a-note-on-variance-in-bitcoin-mining
QR   2019 - Roy Sheinfeld - Envisioning LSPs in the Lightning Economy https://bitcoinwords.github.io/cy19m9#envisioning-lsps-in-the-lightning-economy
QR   2019 - Ross Ulbricht - Bitcoin Equals Freedom https://bitcoinwords.github.io/cy19m10#bitcoin-equals-freedom
9/26 2012 - First Taxi service accepts Bitcoin (in Herefordshire, UK.)	
9/27 2012 - Bitcoin Foundation Day: The Bitcoin Foundation is formed, implementing a core development team for the protocol and a body to oversee the digital currency. - No one controls Bitcoin, remember that on this day.	
QR   2019 - Parker Lewis - Bitcoin is Not Backed by Nothing https://archive.is/aW1kh
QR   2019 - Brady Swenson and Robert Breedlove on Understanding Bitcoin from First Principles https://archive.is/tDmM5
9/28 2013 - Bitcoin Client v0.8 released featuring improved download speed and Bloom Filtering
     2013 - Silver parity reached. Bitcoin exchange rate at $29.65 is higher than an ounce of silver	
QR   2017 - Michael Kerbleski - Guess My Bitcoin Private Key https://archive.is/0SKrm
9/29 2010 - kermit discovers a microtransactions exploit which precipitates the Bitcoin v0.3.13 release
     2017 - BTCPayserver v1.0.0.0 released on GitHub by Nicolas Dorier"	
QR   2018 - Jameson Lopp - A Modest Privacy Protection Model https://bitcoinwords.github.io/cy18m9#a-modest-privacy-protection-proposal
9/30 2010 - "I wish rather than deleting the article, they put a length restriction.  If something is not famous enough, there could at least be a stub article identifying what it is.  I often come across annoying red links of things that Wiki ought to at least have heard of. \nThe article could be as simple as something like  "Bitcoin is a peer-to-peer decentralised electronic currency." The more standard Wiki thing to do is that we should have a paragraph in one of the more general categories that we are an instance of, like Electronic Currency or Electronic Cash.  We can probably establish a paragraph there.  Again, keep it short.  Just identifying what it is."
     2010 - "As you figured out, the root problem is we shouldn't be counting or spending transactions until they have at least 1 confirmation.  0/unconfirmed transactions are very much second class citizens.  At most, they are advice that something has been received, but counting them as balance or spending them is premature."
     Historical Prices 
     2020 $10721
     2019 $8051
     2018 $6587
     2017 $4290
     2016 $607
     2015 $236
     2014 $388
     2013 $125
     2012 $12
     2011 $5
     2010 $0.06"