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Analysis of stacking module of Substrate 1. General Pledge economy is also a kind of mining in essence, but it is different from what we usually call bitcoin mining and Ethereum mining. Bitcoin, Wright coin, Ethereum, BCH and other digital currencies are proof of work (POW) digital currencies based on workload, and the generation of new curr ...

Introduction to NFT The full name of NFT is non Fungible Token. Non homogenous token is the only cryptocurrency token used to represent digital assets. It is indivisible, irreplaceable and unique. On the blockchain, digital cryptocurrencies are divided into two categories: native currency and token. Native currency, such as bitcoin and Etherne ...

In this tutorial, we will learn how to develop Solana chain program, including creating Solana account, obtaining free SOL from the test chain, compiling, deploying and testing process, and developing a simple Solana chain program. A link to download the complete source code is provided at the end of the tutorial. Learn Ethereum developme ...

It has been more than ten years since the birth of artificial intelligence and blockchain. When these technologies appear, people say they will change the world, but so far, the impact of these two technologies on reality is still limited. Technically, the principle of artificial intelligence is to find rules or patterns from a large amount of ...

preface The code of this series of articles is in Go language. Hyperledger Fabric development -- preliminary understanding of smart contract (chain code)Hyperledger Fabric development -- developing user chain codeHyperledger Fabric development -- testing user chain code (to be updated) Chain code file chaincode Basic structure of go First, ...

previously on Today, when using peer to create a channel, the following error was reported 2021-07-02 10:27:43.446 CST [common.deliver] Handle -> WARN 01a Error reading from 192.168.81.134:46572: rpc error: code = Canceled desc = context canceled 2021-07-02 10:27:43.447 CST [comm.grpc.server] 1 -> INFO 01b streaming call completed ...

Blockchain apprentice: how should we choose to trade when we were unable to shake the market on July 3? Coin circle news Highlights of July 3: The Russian central bank plans to study the risks related to encryption investment. Data: gray bitcoin trust will unlock about 41800 BTC s this month. The issuance of BTC anchor coins on Ethereum e ...

Title: fabric CA details date: 2021-04-15 14:30:23 categories: Hyperledger Fabric tags:Hyperledger Fabricfabric-ca MSP msp definition msp is a module component of hyperleger fabric for identity management and authentication of members in the network. effect: Manage user ID Verify the node you want to join the network Provide vou ...

Original link use OpenZeppelin upgrade plug-in The deployed smart contract can modify the code by upgrading, while retaining the original contract address, status and balance. This helps us add new features to the project or fix any errors that may be found in production. In this guide, we will learn: Why is upgrading important Use the upg ...

preface Xiao Ming wrote a spelling correction tool in Chinese and English last time, fooled by the product manager: https://github.com/houbb/word-checker. I thought it could be done once and for all. Until yesterday, I found another open source project with nothing to do. The description is as follows: Spelling correction & Fuzzy search ...