Blocks in blockchain
block head: record the characteristic value of the current block
block body: actual data
According to experts, blockchain can be understood as a distributed public ledger, which is connected by various blocks into a chain. In the traditional bookkeeping system, the bookkeeping right is controlled by the central server
on the "account book" of blockchain, every point in the chain can record information on it, forming a point-to-point accounting system. Therefore, blockchain technology is considered as a decentralized technology
For example, in a village of 100 people, Zhang San bought a cow from Li Si and paid him 10000 yuan. In the past, he had to rely on Zhao Liu, a middleman, to transfer his 10000 yuan to Li Siwith the blockchain system, Zhang San can directly record his 10000 yuan to Li Si's account book, and the transaction information will be transmitted to the whole village, that is, the whole blockchain system, so that other 98 people can see the information. The whole transaction process is recorded by the system, which has the advantage of traceability to prevent the loss of Zhao Liu's account book or Li Si's denial of account
extended data
in 2008, Nakamoto first proposed the concept of blockchain. In the following years, blockchain became the core component of electronic currency bitcoin: as a public account book for all transactions. By using peer-to-peer network and distributed timestamp server, the blockchain database can be managed independently
the blockchain invented for bitcoin makes it the first digital currency to solve the problem of repeated consumption. The design of bitcoin has become a source of inspiration for other applications
the structure of general blocks is divided into block head and block body
the block header contains the identification information of each block, and the most important information is the header hash value, which is completely consistent with the parent hash value of the next block, so as to realize the concatenation of two adjacent blocks and finally get an orderly connected blockchain. Through any block in the blockchain, all blocks before or after this block can be traced.
Dongfang Weiming (named casually) rushed to Luoyang City. After witnessing Jiang Tianxiong, the great Xia of Heluo, catching the thief at the entrance of the city, he rushed into the city and saw the statue of xiaoxiami in the middle of the city. Looking at the young faces on the statue, I can't help feeling that I must be famous. At this time, a man on the side said to himself that he admired xiaoxiami very much. After talking with him, he learned that his name was Gu Yuexuan. As if they were old friends at first sight, they went to the teahouse on the side to have tea. During the dinner, they met Wulin again; Bai Xiaosheng & quot; Xu Ziyi, the author of the book "Wulin Tongjian", records all the famous figures, ranking and major events in the Wulin. Gu Yuexuan's deeds are also among them. It turns out that he is the eldest disciple of Xiaoyao Valley flawless son. After half a cup of tea, Gu Yuexuan leaves in advance. They agree to meet on the first floor of the hotel to continue drinking and talking< 1. Dialogue with Xu Ziyi; Brother Xu seems to like tea very much;, Tea ceremony skills increased
2. When they enter the Baima temple, they see a quarrel, and then a sound of Qin makes them turn the fight into friendship, and go to the top to talk with the girl who plays the Qin, which increases their musical skills
3. The understanding of dialogue with the spiritual Zen master in front of the Mahatma hall increases
4. Play a guessing game with the little girl who kicks shuttlecock in the White Horse Temple (the answers to the four groups of questions are all in the order of 1, 2, 3 and 4), and the savvy increases after winning
5. In the room beside the hotel, you will meet a Ren who has lost his sandalwood chess, and then go to the boxing arena of yequanmen to catch a thief (talk to him when he reaches for his hand), eye skill + 12. Then return the sandalwood chess to a Ren and get the secret in the orange. Talk to him again and choose & quot; Abandon one's son and strive to be the first;, Chess skills increased
6. In the corner of the casino, you will see the lost Hunter Li San, who promised to help him get 50 yuan, and then win 300 yuan. After meeting him in the village outside the city, he will present a yellow birch bow and 200 arrows, and play hunting games. It's better to hit the bear and keep it for sale
7. Communicate with florists in villages outside the city, and their flower skills are increased
8. You can buy Jimo old wine in Luoyang tavern, and then give it to fishermen in villages outside the city to increase their fishing skills
9. You can meet Li Hui, a scholar, in a room in front of the village outside the city, and come to meet him in the afternoon, which increases your calligraphy skills. A list of couplets:
a little dew on a branch of grass / a piece of sky on a person
persuading people to talk for a while / persuading people to write for a hundred generations
a father and son three CI guest / four masters of eternal articles
a grain of rice hidden in the world / half pot cooking the universe
a pair of cold eyes watching the world / full of blood to reward a confidant
three dilapidated houses / a person who has been trained for a long time
the world is full of knowledge / person Emotional mastery is an article
you should be chivalrous in making friends / you should be a little simple in life
a long-standing article double tube pen / a poem of four seasons elegance
if the sky is affectionate, the sky is old / the moon is not hateful, and the moon is always round
then you go to the center of the city and get songfengting poems from the calligraphers and painters, and then go back to Li Wei to see them. Calligraphy skills are increased
10. You can play & quot; after having a conversation with the leader of yequanmen; Stone, scissors, cloth & quot; After winning the game, eye skill increases
11. The painting skills of dialogue with the white scholars in the middle of the city have increased
12. Talking with the owner of huichuntang drugstore, medical skills increased
13. The ability to talk with the owners of antique shops has been increased
14. When shopping in grocery stores, candle shops, drugstores, markets and other places, identification skills will increase
15. The size of gambling in casinos. Sometimes, if you win, you will gain more. The bet is 50 money once
16. From villages outside the city to the East, you can hunt, mine, collect medicine and fish in the forest. Hunting will improve your hunting and lightness skills, fishing will improve your fishing and soft skills, collecting medicine will improve your medical skills, and mining will improve your blacksmith skills, eye skills and hard skills (not every time). Players should do as much as possible to make more money
17. Eating in markets, pubs, inns and teahouses can supplement physical strength and improve tea ceremony and drinking skills, but it costs money. If you drink all the tea twice in a row in a teahouse, Xu Ziyi will give you a tea set: yulanhua six petal teapot
18. Before Shenshi, buy two sticks of incense and sell everything except Vajra Sutra. Then go to Baima temple to worship Buddha. Choose 1 luck + 80, 2 indexes + 20, 3 courage + 80, 4 savvy + 20. Recommendation 2
19. Talk to your mother-in-law in the house opposite the rejuvenation hall, and then go to the central government for a drink of soy milk. Then you will go back and your mother-in-law will ask you to take & quot; Nutritious Chicken Soup & quot; To Xiao, bring to the moral increase, and then promise Xiao to Luoyang Inn two kitchen order dishes, see two cabinet, give him Huangjing (collect medicine) cooking skills increase. Don't forget to reply to Xiao
20. Meet the cook's mother-in-law in the kitchen of the tavern, and then catch her a rainbow carp to learn how to fry Yellow River carp in wine
21. In Baima temple, talk to the children skipping rope, then go to Luoyang Inn for dinner, then go to the kitchen to talk to the chef and choose & quot; Praise cooking;, If you learn to cook chicken at Daokou, your cooking skills will increase
22. Go to the cave in the forest outside the city and talk with the miners to get a shovel, which increases the mining skills
23. If you sell five rainbow carp to Aunt Yutan at one time, you can get ten red worms
24. In the near future, the scholar in white went to the antique shop again, and his identification skills increased
2