Brainstorm bitcoin
ten years ago, my article was written on a black notebook. Now, all the words in my mind are entered into notebook, becoming 0 and 1, which is the change
from the present point of view, the disadvantages of paper are too obvious:
not environmentally friendly
not easy to save
for paper, long-distance transmission is very troublesome (such as information transmission)
the cost is high
easy to modify and forge
when there is a better choice in front of me, if I don't use it, isn't it a loss for me
have you ever thought that one day we won't need paper for our money
you may say:
"yes, I use Alipay and online banking every day, and no paper is used. Is this not achieved?"
indeed, Alipay's payment system is to digitize paper currency and store it in a huge database, but after all, it still needs paper money. The central bank does not print banknotes. The figures in the bank database are not too outrageous. Do you say yes or no?
can we say that the amount of money in the bank account book is the amount of cash? Of course not, because of the existence of bank loans, credit cards and other procts, the number in the bank database will only be much larger than the amount of cash, and this account book is not open, and the specific data deviation is only known to a few people
is there any payment system that does not rely on paper money, has high transparency, and no one can tamper with it
not to mention, it's really possible. Why is it possible? It's just a relatively mature experiment (with a market value of US $5 billion). In 2007, Satoshi Nakamoto, an anonymous big God or organization, began to conceive a magic project. After more than a year of careful elaboration, Nakamoto completed the white paper of the project (bitcoin: a peer-to-peer electronic cash system, Chinese Name: bitcoin: a peer-to-peer electronic cash system), In early 2009, the project was successfully launched
for the explanation of the principle of the system, I don't want to be a teacher here. For those who are interested, please refer to the information of the college channel or library. It's a very good place for you to understand these things
we just need to know that this e-cash system has nothing to do with paper. It is very transparent. Everyone can access and query this payment account book, and everyone can really control their own bookkeeping rights, that is, bitcoin token. As long as the Internet exists, someone is maintaining this account book (using mining machine operation), Then this kind of payment system can exist forever
well, you say it so well, this kind of system should be very popular, right? Of course not, because it is still in the experimental stage, there are still many defects in this kind of account book. For example, its token value fluctuates greatly, which is not suitable for pricing goods for the time being. For example, it has the problem of scalability. Maybe 100000 people use this system every day, and 10 million people use it to block and collapse. For example, it needs a lot of learning costs, People who don't have relevant knowledge are easy to lose money and so on. In short, there are a lot of problems
can we solve so many problems? Theoretically, it's very possible, because it's open source. Open source means that everyone can review and participate in improvement
of course, it's not to deceive you into buying bitcoin. This is not the purpose of my writing. Talking about bitcoin is just to introce a kind of technology, or an idea. What is it? In other words, blockchain (Chinese name is blockchain) is too popular now. Maybe you don't feel much about it at home. In foreign financial circles, it's no exaggeration to say that this word is the same as Dabao's advertising words
nowadays, foreign companies talk about "blockchain has the potential to subvert xxoo", which is like a common occurrence. Every once in a while, some giant set up a blockchain laboratory, and even the chief economist of the Bank of England raised the possibility of issuing national digital currency based on blockchain
we can't help asking, what is the basis of blockchain? What magic is driving or "deceiving" these institutions to lose their position for such a rising concept
blockchain originated from bitcoin. At present, the most successful blockchain is also bitcoin's blockchain. The reason why blockchain makes people reverie is that it has the characteristics of high transparency, unchangeable and no middleman
suppose I brainstorm and apply these features of blockchain to various applications in other instries, will it proce disruptive effects? Well, it's like now you have a new drug, which can cure all kinds of diseases in theory. Does that mean it's really suitable for treatment? You have to try, because you don't know the side effects! Now the blockchain is in such a stage. It seems to be able to cure all kinds of instries, but in fact it is only in the theoretical stage
when it comes to theory, I have to talk about it
first of all, what is the biggest difference between paper ledger and blockchain ledger
the former accounts by people, while the latter accounts by computer. Because people are too "smart", so bookkeeping is easy to be unexpected, and the efficiency is also very low, but computers are different, computers are "stupid", it is to act according to instructions, and the efficiency will be very high, there is also scalability. Ordinary database is a proct between paper account book and blockchain account book. It can save the system's partial dependence on human beings, but there are also problems in ordinary database. For example, it has access rights, such as the pension you pay. Can you know where they are going
therefore, companies, institutions or indivials with some ideas have gone to study blockchain technology.
On February 8, 2011, the price of bitcoin continued to rise, up nearly 15%. It broke through $44000 for the first time. Tesla purchased 1.5 billion bitcoin at one time and used this part of assets to replace part of future cash reserve assets. Tesla may also use bitcoin as a new proct payment method. As for the investment of in bitcoin, musk has already started the layout long ago, expecting to bring the stock price soaring by continuously pushing up the value of bitcoin, and even lead the market into new payment methods
in terms of Musk's consistent & lt; Making waves & quot; In terms of the characteristics of Tesla, although he has been interviewed for quality problems under his leadership, it does not affect him to make some unusual moves in other investment levels. Tesla's continued development is just a process of new car R & D, and what musk himself wants may be a piece of cross-border other instries
in fact, where is the trouble?
it's the same as Thunderbolt download,
it's just to install the download software
the domestic more accurate weather software is the central weather forecast, central weather forecast, 365 weather forecast, etc., as follows:
1, Central Weather Forecast
Central Weather forecast is a mobile phone Weather software, where you can timely understand the information of various cities at home and abroad, including air quality, pollution index PM2.5 and so on
and the consumption of traffic is less, so it is no problem to hang it in the background. The central weather forecast contains weather information of more than 3000 cities at home and abroad, with accurate positioning and timely push. It adopts the data of many meteorological agencies at home and abroad. The weather information such as air quality index, pollution index, temperature trend and PM2.5 is more authoritative and accurate. It is an essential tool for travel
5. Maya weather
Maya weather app is a simple mobile weather client. Maya weather app accurately calculates the sunrise time and sunset time of the current city, and also includes warm tips related to daily life, such as clothing, make-up and moisturizing, air pollution, car travel, etc
special weather early warning information is sent to help users make better life decisions and cope with all kinds of weather conditions< br />
007: spectre (2015)
hobbit: an unexpected journey (2012)
007: skyfall (2012)
hobbit: the battle of smoog obbit:The Desolation Of Smaug (2013)
Robocop (2014)
hobbit: the battle of the five armies (2014)
end Knot 4 Terminator 4 (2008)
blood and chocolate (2007)
home of the brave (2006)
Rocky Balboa (2006)
007: fight against Casino Royal (2006)
Instinct 2: fatal temptation Basic Instinct 2 (2006)
pink panther (2006)
brothers Grimm (2005)
Hairdresser beauty shop (2005)
into the blue, Mine and ours (2005)
be cool (2005)
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barbershop 2: back in business (2004)
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sleepover (2004)
counsellor 2 agent Cody Banks 2: Destination London (2004)
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Cody Banks (2003)
good boy 2003)
bridegroom in wrong bed a guy thing (2003)
out of time (2003)
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barbershop (2002)
windtalks (2002)
Hart & 39; S War (2002)
Red Dragon (2002)
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Crocodile Hunter: collision course (2002)
antitrust (2001)
Hannibal (2001)
butterfly lover in the time of the butterflies (2001)
legal blonde (2001)
cheating mother and daughter Heartbreakers (2001)
what happens when a thief meets a thief; s the Worst That Could Happen? ( 2001)
original sin (2001)
strike out 3 strikes (2000)
super nova (2000)
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stigmata (1999)
kiss the sky (1999)
kiss my little sister Molly (1999)
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red corner (1997)
all dogs G O to heaven 2 (1996)
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CIA action Mulholland falls (1996)
kingpin (1996)
ANGEL kidnapper house arrest (1996)
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clean slate (1994)
Bonnie and Joan Benny & amp; Joon (1993)
Meteor Man (1993)
undercover Blues (1993)
untamed heart (1993)
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delirious (1991)
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Harley Davidson and the Marlboro man (1991)
Hot rush (1991)
doomsday Flower Thelma & amp; Louise (1991)
Liebestraum (1991)
the Russian house (1990)
Stanley and Alice Stanley & amp; Iris (1990)
desperate hours (1990)
the mighty Quinn (1989)
January man (1989)
Leviathan (1989)
mind games (1989)
some girls (1988)
poltergeist III (1988)
masquerade (1988)
willow (1988)
a fish named Wanda Last rites (1988)
overboard (1987)
moonstruck (1987)
Spaceballs (1987)
wall like a man (1987)
dead of winter (1987)
violent sweep of fatal beauty (1987)
poltergeist II: the other side (1986) < br/ >Black street lucky stars wise guys (1986)
solarbabies (1986)
dream love (1986)
double stars running scared (1986)
year of the Dragon (1985)
hot dog... The movie (1984)
Mrs. Sophie (1984)
until September until until September until September 1984 Martin & # 39; S Day (1984)
the ice Pioneers (1984)
2010 (1984)
romantic happy (1983)
husband Mr. mom (1983)
war games (1983)
the Hunter (1983)
brainstorm (1983)
Christmas story a (1983)
The Adventures of Bob & amp; amp ; Doug McKenzie: strange brew (1983)
the year of living dangerously (1982)
my favorite year (1982)
Pink Floyd the wall (1982)
the Beastmaster (1982)
bystander a stranger is watching (1982)
diner (1982)
poltergeist (1982)
female / male/ Victoria (1982)
... All the marbles (1981)
friend in need, buddy buddy (1981)
old dream of Qionglou, rich and famous (1981)
pennies from heaven (1981)
century of the Titans (1981)
I want to fly high fame (1980)
blood red splashing white yarn he knows you & 39; Re alone (1980)
hero at large (1980)
why would I lie 1980)
The Champ (1979)
coma (1978)
Corvette summer (1978)
the goodbye girl (1977)
Telefon (1977)
demon seed (1977)
I can't die Logan & 39; S run (1976)
entertainment world sequel that & # 39; S entertainment, Part II (1976)
the wind and the lion (1975)
the lion roads age (1975)
Mr. ricco (1975)
the sunshine boys (1975)
profession: Reporter (1975)
Entertainment; S entertainment (1974)
future world (1973)
the man who loved cat dancing (1973)
wicked, wicked (1973)
African angry leopard, left in Africa (1973)
pat Garrett and Billy the kid (1973)
Amigos, LOS (1972)
they only kill their masters (1972)
skyjacked (1972) The Curse of God (1972)
night of the Lepus (1972)
every little crook and nanny (1972)
fortune and men & 39; S eyes (1971)
catlow (1971)
pretty maids all in a row (1971)
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vengeance Veyron get Carter (1971)
shaft (1971)
Kelly & # 39, strategic operations; S Heroes (1970)
Zabriskie Point (1970)
well, Elvis: that & # 39; S the way it is (1970)
Ryan, the daughter of Ryan; S daylight (1970)
the moonshine War (1970)
the traveling executor (1970)
zigzag (1970)
House of dark shadows (1970)
Marlowe (1969)
the trouble with girls (1969)
The Gypsy motors (1969)
the bushbaby (1969)
goodbeye, Mr. chips (1969)
Alfred the great (1969)
the fixer (1968)
where Eagles dare (1968)
the biggest bundle of them all (1968)
sol Madrid (1968)
speed (1968)
the green Slim (1968)
The Legend of lylah Clare (1968)
2001: a space odyssey (1968) < B R / > the agents (1968)
ice station zebra (1968)
point blank (1967)
double trouble (1967)
The Karate killers (1967)
eye of the devil (1967)
far away from the madding crowd (1967)
The Dirty Dozen (1967)
thunderbolt Grand Prix (1966)
around the world under the sea (1966)
made in Paris (1966)
one spy too many (1966)
spinout (1966)
7 women (1966)
a patch of blue (1965)
36 hours (1965)
spring wind hates the sandpiper (1965)
laurel and Hardy & 39; s Laughing 20' s (1965)
Joy in the Morning (1965)
Girl Happy (1965)
Clarence, The cross eyed lion (1965)
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zebra in the kitchen (1965)
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lady l (1965)
young Cassidy (1965)
Doctor Zhivago (1965)
the hill (1965)
Cincinnati teenagers The Cincinnati Kid (1965)
advance to the real (1964)
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MGM's comedy film review the big paradise of Comedy (1964)
to trap a spy (1964)
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The Americanization of Emily (1964)
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Looking for Love (1964)
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Quick Before It Melts (1964)
Rhino! ( 1964)
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come fly with me (1963)
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Billie rose, a woman of the world; Two weeks in another town (1962)
mutiny on the bounty (1962)
afternoon gunfire ride the high country (1962)
how the West was won (1962)
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all fall down (1962) < br 2)
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the kingdom of heaven
I have been working on the Internet for so many years. In the process of contacting with a large number of entrepreneurs, through practice and observation, I summed up the characteristics of some successful people:
1. The first element is to have vision
Only when a large number of laymen don't see the opportunity can they seize it and see the future direction, can they turn the opportunity into commercial value In 2001, Ma Yun told everyone that he wanted the world to have no business that was difficult to do, even though he couldn't pay at that time. When he saw in the small market of Zhejiang how difficult it was to do a big international business, he saw the opportunity and hoped that with the help of the Internet platform, there would be no difficult business in the world The second factor is organizational abilityentrepreneurship needs a group of people, not one person, so it needs strong organizational ability. We found that most of the successful entrepreneurs in China have been student leaders in schools
why? Because you have no money in college, you need to use your persuasion, organizational ability and personality charm to save all your classmates together and do what you want to do with you
The third factor is to create valueentrepreneurship is not necessarily innovation, and innovation may not create business value. How can we create value
In China, we can see two aspects: first, create new procts and services; Second, to provide users with the same quality procts and services at lower cost and pricein the past 30 years or so, frankly speaking, there are very few original technologies in China, even today. We are more likely to imitate others, but some people do better and some do worse
I see a lot of young people starting businesses, but there are few technological innovations. Most of them are business model innovation, the good point is innovation, the hard point is replication
I often tell you that you don't want to be original, and you don't have that ability. If you can make the best use of the six elements of reproction, adaptation and optimization, you'll be very good
4. The fourth factor is that in the process of entrepreneurship, we should learn to get along with loneliness
in essence, entrepreneurship is a very self process, which is more of a lifestyle choice. Now, although many people start their own businesses physically, they still don't want to understand it consciously
for example, I once received a complaint from a female entrepreneur. She said, "I always call you, you always do not answer, I go to bed so late every day, 12 o'clock, you have no sympathy." I said I didn't feel the same way
there are two reasons: first, it's the same for me to start an Internet business, but I've never complained about anyone; Second, when you choose to start a business, you need to understand that you don't work from nine to five. In the process of starting a business, you have to get up early and go to bed late, which naturally includes many sleepless nights. As an alt, when you make a mature decision, you can't complain about anyone. If you can't bear this kind of thing, don't touch it. It's so simple
if you want to be a real entrepreneur, do you want to complain? No one has the obligation to sympathize with you
the most important thing to start a business is to build a great enterprise, and to be an enterprise, we must have "entrepreneurship" and "entrepreneur spirit", which is proposed by economist Schumpeter. He said that pioneering spirit, strong desire for success, risk-taking spirit, taking pains for pleasure, shrewd sense and enterprising spirit are all essential qualities of entrepreneurs
however, nowadays many entrepreneurs' entrepreneurial motivation is derived from the desire for wealth and reputation, but most "successful entrepreneurs" pursue ideals and transcendence
entrepreneurship is not a blind act. Many entrepreneurs like to "hold together". I remember that a company used to shout slogans like the army and went bankrupt soon. If you can't bring new things to the market, you can't just do things rigidly and shout slogans just to make money
It's important to learn to be alone. Because most of the time, you can't share this loneliness with others. The most important decision must be taken by yourself. The ability of creation and innovation needs independent thinking, and the premise of independent thinking is ideological freedom In today's China, it is not easy to think independently. But if you want to be an entrepreneur with transcendent ideas, you must have the freedom of independent thinking and thinking. The lack of independent thinking of sports entrepreneurship must be the biggest waste of social resourcesEnder's game (good, better than I expected, the child ASA is more and more handsome)
shivering alien / deep space amnesia (this is really good, really good-looking, believe me)
Prometheus (alien Prequel)
hobbit
Lord of the rings
against the world (love science fiction, Dunst is beautiful)
hunger game (generally, I have no personal feelings)
iron man (Ironman is my idol)
Thor (male god's movie must be good)
Wolverine (Uncle Hugh's movie is generally good)
iron armor and steel fist (but Uncle Hugh's movie is super good)!!!!!! I've watched it six times)
Hai Bian Wang (I like the first movie that didn't grow up, Chloe super killer, super cool, do you have)
hobbit 2: go and return (as a loyal fan of the Lord of the rings series, don't explain)
Jack and the giant (generally, except my cousin can watch the plot)
Star Trek 12 (yes, star trek all like it, Especially in the new one, there is my volume blessing)
Superman: body of steel (OK, just want to ask, eh, Superman, where are your underwear?)
Special Forces 2: Revenge
zombie World War (Pitt's film is good)
biochemical crisis (I like this series of films, but I think the 5 that Li Bingbing joined is very boring)
host (it's written that I want to tell Lou Lou not to watch, the difference between the film and the book is too far)
well, that's all I think about. I wish Lou Lou Kaisen every day
according to the degree of centralization
pure P2P:
*
nodes act as both client and server
*
there is no central server
*
there is no central router
*
such as Gnutella
heterogeneous P2P:
*
there is a central server to store the node's information and respond to the request for such information
*
the node is responsible for publishing the information (because the central server does not save the files), letting the central server know what files they want to share, and letting the nodes that need it download the resources they can share
*
the routing terminal uses the address to obtain the absolute address by being referenced by a group of indexes
*
such as the original Napster
hybrid P2P:
*
it has the characteristics of pure P2P and hybrid P2P
*
such as Skype<
according to the network topology
structure, P2P:
*
peer-to-peer links each other to form a specific regular topology
*
when a resource needs to be requested, it must be found according to the topology rules. If it exists, it must be found
*
such as chord and can<
unstructured P2P:
*
peer-to-peer have mutual connection information, forming an irregular network topology
*
when a resource point needs to be requested, it is found by broadcasting. TTL is usually set, even if it exists, it may not be found
*
such as Gnutella
loose structure P2P:
*
peer-to-peer have mutual connection information, forming an irregular network topology
*
when a resource needs to be requested, the search is based on the existing information, which is between structured P2P and unstructured P2P
*
such as Freenet. Related concepts
when it comes to P2P, we have to mention BT, which is jokingly called "abnormal". Almost most people feel that it has become a group of equivalent concepts with P2P, and it has also developed P2P technology to a near perfect level. In fact, BitTorrent (Chinese full name of bitstream, referred to as BT) originally refers to a multi-point download of P2P software. Unlike FTP, it has only one sending source. BT has multiple sending points. When you are downloading, you are uploading at the same time, so that everyone is in the state of synchronous transmission. It should be said that BT is the most successful application of P2P today
if you explain, BT first divides a file into several parts on the uploader side. Client a randomly downloads part n on the server, and client B randomly downloads part m on the server. In this way, a's BT will go to B's computer to take part m that B has downloaded according to the situation, and B's BT will go to a's computer to take part n that a has downloaded according to the situation
there is a sentence that can be used as the most vivid explanation of BT: "I am for everyone, everyone is for me". When I first heard this concept, someone said to me, don't use BT, it will damage your hard disk! It's about the first sentence. Now, how can there be gain without contribution? This can probably summarize the essence of BT download transmission. Btjoy, a tool software, perfects this technology in the form of software. This software, which was born only one year ago, has been popular all over the network rapidly. For lovers of BT download, 120g hard disk can be filled quickly
in addition to BT download, another way to download is to use the resources on Usenet. It is not true that some people understand him as P2P. This download method is not known in China, but it is very popular abroad. The main reason is that most of the resources on Usenet are in English or other languages, so users are required to have a certain level of English. The resources on Usenet are global, and the download speed is very fast, IP anonymity, so it is the most popular network download tool in western countries. Usenet tools can be downloaded from Sina. It's a very useful Usenet software.
LEGO robot programming software is called legomindstormsnxt, ROBOLAB