For the basic technology of the blockchain operation and the history behind it, I believe many people have already said that they have learned about it on the Internet. For example, Phil Zimmermann developed PGP encryption technology, open source software, and P2P networks - these are the forerunners of the blockchain technology miracle. But how do all these things come together and eventually create the bitcoin we know today?
At the end of 1992, three retired technology geeks - Eric Hughes, mathematician at the University of California, Berkeley, retired Intel employee Timm May, and the fifth employee of Sunmicrosystems Computer scientist John Gilmore invited twenty of his closest friends to an informal meeting where they discussed some of the most cumbersome procedures and password issues, and the mysterious gates of cryptocurrencies were also It was from this time that they were opened by them.
Password punk (Cypherpunk)This informal meeting was originally a purely private gathering, but later it evolved into a monthly meeting in John Gilmore's company, Cygnus SoluTIons. At the first meeting, Jude Milhon (a hacker and cryptographer who used the St. Jude pseudonym) called the organization "Cypherpunk", which introduced "cipher" The words "crypto" and "cypher" are meant to combine the idea of ​​computer punk, the individual spirit in a computerized space, and the use of strong encryption (ciphertext) to protect personal privacy.
At this point, the organization that was not eye-opening at the time began to expand, and perhaps even they did not think that the future would trigger a revolution in the world.
As the “Punk Punk†team evolved, they decided to build a mailing list and then access other “password punk†organizations outside the Bay Area. In just a short time, their mailing lists quickly became popular, and the number of subscribers continued to expand. People began to exchange ideas, discuss development, and had a large number of proposals and password tests every day. All of this communication was done through the most innovative encryption methods of the time (such as PGP), so everyone's privacy was well protected - the result is naturally self-evident, people's ideas are free to share.
This combination of privacy and freedom has led to a number of themes being freely discussed, including technical concepts such as mathematics, cryptography and computer science, as well as political and philosophical debates. Although everyone has not reached a consensus on many things, as an open forum, personal privacy and freedom are fully protected – a concept that is above all the discussion topics.
In fact, the basic idea behind the “password punk†movement can be found in the “password punk†declaration written by Eric Hughes in 1993, and the key principle supporting his declaration at the time was the importance of privacy. The letter. Moreover, people can also see discussions of other principles in the declaration. Now, when we look back, we will find that these principles are actually the basic ideas for supporting and building Bitcoin.
Regarding privacy, the declaration of "password punk" is as follows:
"In the development society of the electronic age, privacy is necessary. Privacy is not a secret. Private affairs are things that one does not want the whole world to know, but the secret thing is something that one does not want anyone to know. Privacy is chosen by Sexually show your strength to the world."
To explain privacy issues more clearly, the “Punk Punk†declaration even uses some very useful examples that are directly related to everyday transactions:
“When I use cash to buy magazines in the store, the clerk doesn't need to know who I am and I don't ask where the money comes from; when I ask my email service provider to send and receive messages, they don't need to know who I am with. Communication, you don't need to know what I said, and what others said to me, the email service provider only needs to know where to get the information, and how much I need to pay for these services... So open society An anonymous trading system is needed. Until now, cash is actually an important part of this system. Anonymous trading system is not a secret trading system. When an anonymous user uses an anonymous system, it only authorizes when it needs to disclose their identity. Confirmation - this is the essence of privacy."
Formally based on the above principles, people began to try to develop digital currency.
Early attemptsThe first attempt at this anonymous trading system was Dr. Adam Back, who created "Hashcash" in 1997. By its very nature, it is actually an anti-spam mechanism that increases the cost of sending spam by increasing the time and computing power of sending emails: senders must prove that they have spent their time on email Create a "stamp" in the title - similar to the proof of work (POW) used in Bitcoin before you can send an email.
In 1998, Wei Dai released the B-Money proposal and introduced two ways to maintain transaction data:
a) Each participant on the network will maintain a separate database that records the funds information belonging to the user; b) all records need to be saved in a specific user group.
In the second option, the user group that supervises the recorded data will be motivated if it is honest. To do this, they not only need to deposit their own money into a special account, but if they act dishonestly, they will lose the money. This method is called "Proof of Stakes", and if a user-specific group (or master node) tries to process any fraudulent transactions, it will lose all of its own funds.
Because of the high efficiency of proof of equity, many cryptocurrencies are used or considered to verify transactions, the most notable of which is Ethereum (ETH).
In 2004, Hal Finney used Adam Baker's Hashkash principle to create a reusable Proof of Work. In 2005, Nick Szabo released the Bitgold proposal, which was based on Hal Finney and other encryption projects.
Now we can see that since the 1990s, experts from all over the world have been working tirelessly on cryptocurrency and blockchain technology, and have tried to solve many complicated problems about cryptocurrencies, they can Said to be the smartest group in this field.
Nakamoto Sakae debutIn October 2008, an anonymous person (and possibly an anonymous organization) named Satoshi Nakamoto posted a paper on the “Crypt Punk†mailing list on metzdowd.com “Bitcoin: P2P Electronic Cash System†》. (I strongly recommend readers to read the Bitcoin white paper, which is only a simple nine pages.) This paper directly quotes Dai Wei's B-Money and Adam Baker Hashcash, and also solves many of the problems faced by early developers, such as The risk of double payment (using a single token to purchase goods multiple times). However, many cryptocurrant skeptics have also made a lot of criticisms on this paper. But this did not stop Nakamoto's wishes. On January 3, 2009, the Bitcoin founding block was unearthed.
At this point, Bitcoin has been on the historical stage of cryptocurrency. Although it has been questioned by critics and skeptics in the development process, it is undeniable that Bitcoin has been constantly developing.
| Cable Spec | UL 2464 22AWG of cable |
| temputer of cable | 80°C |
| Voltage | 300V |
| Color | Black |
| Length | 1500mm or option |
| Plug | OBD plug |
| DC connector | Female DC 5.5x2.5mm |
| Mini Order | 500pcs /per order |
| Lead time | 1-4 weeks |
| Payment | TT or PayPal |
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