Tag:block

  • Building blockchain based on Java language (6) — Merkle tree

    Time:2020-10-28

    The final content is subject to the original texthttps://wangwei.one/posts/630… introduction At the beginning of this series, we mentioned that blockchain is a distributed database. At that time, we decided to skip distributed and focus on data storage. So far, we have implemented almost all the components of the blockchain. In this article, we will cover […]

  • Leetcode 529. Minesweeper | Python

    Time:2020-10-26

    529. Minesweeper game Source: leetcodehttps://leetcode-cn.com/problems/minesweeper subject Let’s play Minesweeper! Given a two-dimensional character matrix representing the game board.  MFor oneNot excavatedMine of mine,EFor oneNot excavatedThe empty square of,BRepresents a mine with no adjacent (top, bottom, left, right, and all four diagonals)ExcavatedThe blank box of,number(‘1’ to ‘8’) indicates how many mines are associated with this areaExcavatedIs […]

  • Complex blockchain

    Time:2020-10-26

    E-money is a success Blockchain is successful in the application of issuing electronic cryptocurrency. Bitcoin has been running for many years without central organization management, and there are no major problems. This is the result of a series of traditional information technologies, such as blockchain storage technology, mining based consensus mechanism, encryption technology, P2P technology […]

  • Baidu super chain open class | Beijing policy intensive release, how to build “blockchain city”?

    Time:2020-10-26

    Recently, the action plan for innovation and development of block chain in Beijing urban area was released,I don’t know what the new deal of Beijing blockchain has said? How to understand the construction of urban blockchain?Baidu super chain, together with COSCO era, has participated in the construction of Beijing blockchain application scenarios in Haidian District […]

  • A story about abstraction: looking for better CKB development tools.

    Time:2020-10-25

    Three years ago, we embarked on a journey full of legends and adventures. We started to build a new blockchain platform, a blockchain platform that we, as developers, like very much and hope to rely on for a long time. On this basis, we began to elaborate the foundation of nervos CKB: Security:Can people rest […]

  • Overseas emerging hot spot: social token and its token summary

    Time:2020-10-24

    Innovation projects can be divided into two types. One is to provide solutions for a given proposition, such as L2, or various AMMS. Depending on the development path of technology, the value of such projects can be judged. The other is to put forward a proposition. For example, bitcoin proposed whether we need to decentralize […]

  • [Research Report] will the eip-1559 proposal make eth appreciate or face risks?

    Time:2020-10-23

    Eip-1559 is probably one of the most anticipated upgrades to the Ethereum economic model, and it is also acknowledged that it is hard to understand because many articles focus on technology. In fact, it may be a shortcut to understand this matter from the perspective of gas. Important background supplement. Eip-1559 is a proposal of […]

  • BSN successfully introduces irita cross chain and chainlink Oracle service

    Time:2020-10-23

    The design and construction concept of the blockchain service network BSN follows the Internet model. On the Internet, all websites and apps can communicate with each other. Because they can be deployed on any cloud resource in the world, the deployment cost can be reduced as low as possible. At the same time, the deployment […]

  • Further understanding of Baidu super chain xuper

    Time:2020-10-21

    preface Previously, I wrote an article about deploying smart contract on Baidu super chain xuper and realizing the function of certificate storage. Here, we describe how to build three nodes and take node 1 as the outbound node. In this article, we configure node 1 and node 2 as the outbound node, and node 3 […]

  • Vitu.ai When you come to learn, the channel goes online

    Time:2020-10-19

    What has VITU done in the 20 days since the last launch of the backtesting feature? Today is November 18, 2019, Vitu.ai We have officially released channels waiting for you to learn, including data analysis courses starting from python, data visualization, machine learning, and open source trading strategies. Vitu.ai Through the online interactive learning mode, […]

  • Baidu super chain open class | how to write a smart contract to win 10000 yuan bonus

    Time:2020-10-18

    The second BSN developer competition, which lasted three months, came to a successful conclusion.In this issue, we invite three winners who use Baidu‘s super chain xuperchain as the underlying framework to share their winning cases and deeply analyze the writing process of smart contracts.Take you to analyze how to write “wechat” smart contract based on […]