Programmer Think

layout: fabric title: solo node test date: 2021-03-25 19:18:57 categories: Hyperledger Fabric tags:Hyperledger Fabric Generate Fabric certificate Hyperledger Fabric configures organizations, nodes, and users through certificate files. The standard of certificate file (in fact, digital certificate is the public key authenticated by CA) is X ...

Coin circle news Highlights on July 14: 1. Qian'an once again suspended the sterling withdrawal business of British users. UK digital bank Revolut adds ICP to its application. The S & P Dow Jones index launched the S & P cryptocurrency broad digital market index. Gray BAT trust position increased by 1.72%, and FIL trust position i ...

title: fabric environment construction date: 2021-03-24 17:12:42 categories: Hyperledger Fabric tags:environment Docker of Hyperledger Fabric basic environment Docker is an open source application container engine, which is based on Go language and complies with Apache 2.0 0 protocol is open source. Docker allows developers to package thei ...

A large number of articles on the Internet have introduced ECDSA (elliptic curve encryption) algorithm to generate Ethereum public-private key pairs, and then generate a unique Ethereum address. Most of them mentioned that the uncompressed public key generates the address by hashing first, and then the last 40 bits are the address. However, I m ...

RLP coding Basic principles The sole purpose of RLP (Recursive Length Prefix) coding is to solve the problem of structure coding. The two structures of RLP coding design are: String and List. They are defined as follows: String Refers to a string of bytes, corresponding to Go In language string/[]byte/uint/[]uint/[N]uint etc. List Specified ...

Supplementary knowledge: If the transfer is not related to the deployer, it is related to the trader!Gas is a unit of measurement in Ethereum network. It is an indicator designed to quantify computing power consumption. That is to say, with gas as the unit of calculation, we can easily calculate how much gas costs users need to pay to comp ...

Background introductionRecently, when developing smart contracts and deploying them to the Conflux network, some small partners in the community encountered the problem of pledging part of cfx when sending interaction to smart contracts and returning part of cfx after interaction problem. As the roaster replied, in the blockchain, a certain amo ...

This task can be verified on BTC Testnet. When we really need something memorable and want to record it on the main network, we can operate in the same way. However, it is necessary to purchase cash withdrawal from the exchange. The process should be more complex, and there are also cash withdrawal handling fees in the middle. First, we get th ...

0x take Limit Order of protocol analysis As for the question of what 0x is, I won't be verbose here. There are many documents explaining the basic concepts. Here we mainly show the listing and eating process of limit order. 0xprotocol Process Overview Explanation of some problems in 0x 0x limit order hanging order eating order process Intera ...

Smart contract 1. Introduction JD Chain intelligent contract system consists of five parts: contract code language, contract engine, contract account, contract development framework and contract development plug-in. Contract code language is a programming language used to write smart contracts. Contract engine is a virtual machine that inter ...