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20

According to blockchain.info, the block 210000 was solved on 2012-11-28 15:24:38 GMT, and was relayed by Slush's Pool. The pool's Stats page also claims to have solved that block. It has also been stated that the block was solved by pool's user by the nickname of laughingbear.


18

Script was in the first version of Bitcoin. Satoshi developed Bitcoin in private before releasing the fully-usable Bitcoin 0.1, and he said very little about his thought-process, so we'll probably never know exactly why many things were done the way they were. Script had several serious bugs when Bitcoin was first released, and some bugs still exist. It's ...


15

The March 12, 2013 blockchain fork started with 225430 and so far has reached block 225461, so it is 31 blocks long. Some of those were mined long after the fork supported by v0.7 clients had regained longest chain. At the peak the fork which supported by v0.8 clients was at least a dozen blocks higher meaning transactions that had more than ten ...


13

I've got an answer on Reddit: It's likely to have been written in a PM or an email to some developers, and it seems that Mike Hearn (BitcoinJ) was the one who published this statement: Mike Hearn - February 25, 2013, 12:48:54 PM He communicated with a few of the core developers before leaving. He told myself and Gavin that he had moved on to other ...


9

The current testnet is on its third iteration, somewhat unimaginatively titled testnet3. It was put that way by this commit: Testnet, Mark III gavinandresen authored 2012-04-12 Before that, we had testnet2: (though we didn't call it that back then) Reset testnet with a new genesis block davout authored 2011-02-03 Before that, testnet: ...


8

According to Bitcoin and Cryptocurrency Technologies (BaCT), the Princeton Bitcoin textbook, the block chain dates back to a "paper by Haber and Stornetta in 1991. Their proposal was a method for secure timestamping of digitaldocuments, rather than a digital money scheme." (BaCT p.15) The chaining of Merkle trees instead of single documents was proposed in ...


8

Pay to Public Key Hash has existed for the entirety of Bitcoin's life. P2PKH addresses have existed since the earliest release of Bitcoin. Creating P2PKH addresses and sending to P2PKH addresses was possible to do with Bitcoin 0.1.0. However these early versions of Bitcoin also supported a Pay to IP address feature where your wallet would contact the ...


7

Yes - it's feasible. Bitcoins are released at a constant rate determined by the protocol. At the time, 50 Bitcoins were being generated for every block(this is now 25); and blocks are supposed to be found every 10 minutes. Miners compete amongst each other for this prize. In 2009, you could mine using your computer's CPU and you were only competing with ...


7

This is a known bug in the early days of bitcoin. Was fixed by BIP-30 https://github.com/bitcoin/bips/blob/master/bip-0030.mediawiki There is a discussion here: https://bitcointalk.org/index.php?topic=216938 And yes, 50+50 bitcoins are missed forever. In fact, there are much more missed bitcoins. For example, 2500 bitcoins were gone to nowhere in block ...


7

Have a look at the early sources here: http://www.bitcointrading.com/forum/bitcoin-clients/original-bitcoin-source-code-archives/ there is a small piece of code in script.cpp: case OP_RETURN: { pc = pend; } break; which allows to spend ANY UTXO with just a very simple scriptSig OP_1 OP_RETURN


7

Bitcoin Pizza Day is celebrated on May 22nd. On this day in 2010, a BitcoinTalk member bought pizza in exchange for 10,000 BTC. This represents more or less the first known transaction using bitcoins for actual goods. The original post: Laszlo announcing his purchase in 2010 The significance has been growing especially now, because... of how much that 10,...


6

The very first icon (created by Satoshi) is visible here: https://bitcointalk.org/oldSiteFiles/images/screen3.png Satoshi later updated this using the B with two vertical strokes https://bitcointalk.org/index.php?topic=64.0 http://i.imgur.com/D6pj0.png He never posted much about why he chose this symbol. It was not in use before Satoshi put it in the logo. ...


6

This is what I see for a search on pgp.mit.eud, which points to this key: That is a surprising result. If we download the key purported to be Nakamoto's from Bitcoin.org, we get the following fingerprint: pub 1024D/5EC948A1 2008-10-30 Key fingerprint = DE4E FCA3 E1AB 9E41 CE96 CECB 18C0 9E86 5EC9 48A1 uid Satoshi Nakamoto <...


6

According to the mailing list archives, the mailing list received Satoshi's email at Fri Oct 31 14:10:00 EDT 2008. However the mailing list is moderated so perhaps the email was not received by everyone until a day later on November 1st. The first response to the email was sent on November 2nd, so it may be that the email was not forwarded to the list for a ...


6

Litecoin was not the first altcoin. It actually uses ideas for altcoins that precede it but had died before it was created. This is mentioned in its announcement thread on bitcointalk.. The very first altcoin was actually Namecoin, announced in April 2011. Namecoin was actively used and mined, and can still be used today.


6

As of June 19 2019, using the following query: bitcoin-indexer=> select reverse_bytes(output_tx.hash_id || output_tx.hash_rest), output.tx_idx, output_tx.current_height, input_tx.current_height, input_tx.current_height - output_tx.current_height from output inner join input on input.output_tx_hash_id = output.tx_hash_id AND input.output_tx_idx = ...


6

The renaming was merged in December 2013 with prior discussion on this GitHub issue. The general motivation was to distinguish between one particular implementation of the Bitcoin protocol (many refer to Bitcoin Core as the "reference implementation") versus other implementations (libbitcoin, btcd, bcoin, bitcoin-s etc) that either existed at the ...


5

I'll list the mentions I've found in reverse chronological order. It first showed up on StackExchange on August 30, 2011. However, I often hear the term Satoshi as if it was a monetary unit. rebuilder discussed the divisibility of Bitcion on March 23, 2011. I'll use the term "Satoshi", as previously coined by others, to mean the current smallest ...


5

The official Bitcoin Wiki has a page about the History of Bitcoin. Also, the original Bitcoin homepage has a page with a brief history of Bitcoin. This wiki is primarily maintained by the original creators and developers of Bitcoin. I especially like May 21 2010 - laszlo first to buy pizza with Bitcoins agreeing upon paying 10,000 BTC for ~$25 worth ...


5

The first non-coinbase transaction in the chain is in block 170. Not sure what you would consider a 'real' versus a 'test' transaction, but given that there is an entirely separate blockchain for test transactions I'd consider it as real as any other.


5

Sipa is the alias of Pieter Wuille, a Bitcoin Core developer. It just happens that he had a feature branch for the rpc command importprivkey, and people just referred to it as the "sipa" format. It's just something that has hung around in vanitygen and a few places on the Bitcointalk forum, it's not in common use anywhere else. The format being talked about ...


5

This is not true. Code and code comments in v0.1.5 (the oldest tagged version in git) enforce that there always is a coinbase transaction and that it must always be the first. There cannot be a coinbase transaction elsewhere in the block. Coinbase transactions are defined as transactions with one input whose previous transaction hash is all 0's and whose ...


5

It depends on how you define release. Satoshi sent the email to the Cryptography mailing list on Jan 8 2009 UTC. However because the Cryptography mailing list is moderated, that email did not reach email subscribers until Jan 9 or 10 2009 (it's actually Jan 10 2009 at 1 AM UTC). The discrepancy you see is that many people refer to The Mail Archive source. ...


4

According to MtGox, the hacker got about 2000 BTC. A few real customers also appear to have purchased bitcoins at an artificially low price during the incident, withdrawn them, and kept them. This is estimated to amount to less than 650 BTC. The details given at the above link are: ~June 2011 Mt. Gox Incident Time: 2011-06-19T18:00 ± 1 h (theft), days ...


4

That is clearly incorrect. His whitepaper was released on October 31st, 2008 via the metzdowd mailing list Bitcoin P2P e-cash paper Satoshi Nakamoto satoshi at vistomail.com Fri Oct 31 14:10:00 EDT 2008 Previous message: Fw: SHA-3 lounge Messages sorted by: [ date ] [ thread ] [ subject ] [ author] I've been working on a new electronic ...


4

https://en.bitcoin.it/wiki/Mining_hardware_comparison and https://en.bitcoin.it/wiki/Non-specialized_hardware_comparison are the canonical lists. I'm not sure that will be useful to you; there's approximately 940 products across the two lists. If you're making a visual presentation of how mining hardware evolved, you might also find this thread useful.


4

Jeff Garzik received an Avalon miner on january 30th, 2013 and posted pictures at http://garzikrants.blogspot.com/2013/01/once-upon-time-in-china-package-shipped.html and http://garzikrants.blogspot.com/2013/01/avalon-modular-room-to-expand.html The next day he posted a review at http://garzikrants.blogspot.com/2013/01/avalon-asic-miner-review.html For ...


4

There are different ways of interacting with Bitcoin. If you just want to make an occasional payment, and don't want to handle large sums, you'll probably be happy to run a Thin Client on your smartphone. They rely on full nodes to provide data, but when you wait for a few confirmations are sufficiently secure. To learn more about different types of wallets, ...


3

Slush on December 16th 2010 http://mining.bitcoin.cz https://en.bitcoin.it/wiki/History Was that what you were looking for?


3

In the beginning, the Standard Client mined blocks by default. The difficulty was low enough that a single computer could reasonably create blocks just with its CPU. The Standard Client stopped CPU mining by default when GPU mining became prevalent. Early blocks were most likely mined by Satoshi and other first adopters. One can see that the Genesis Block ...


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