Programmer Group

The purpose of this paper is to understand what blockchain is through Java practical development tutorial. We will develop a very basic blockchain by self-study in Java through practical learning, and on this basis, we can expand such as web framework applications. This basic Java blockchain also implements a simple workload proving system. ...

Hyperledger Fabric is one of the most popular blockchain development frameworks. It has unique positioning and some distinctive features, such as licensing architecture, pluggable components, channels supporting private transactions, modularity and scalability, so it is suitable for the development of enterprise alliance chain applications. In ...

1. summary The technology builders of Hangzhou Internet court and judicial blockchain platform are ant financial services blockchain. Then, with the help of ant's technical ability and service ability, how to quickly connect with the superior's legal chain, so as to facilitate the subsequent opening ...

Tendermint Due to work reasons, I began to contact Hyperledger Fabric two years ago, and its community is still very active. It has developed from v0.7 in that year to v2.0 now. But I have to say that Fabric's consideration is still very big, which is difficult for secondary development. So recently, ...

omni USDT To understand the tokens of the omni protocol in depth, you must first understand the history of the omni protocol. Please refer to Understanding the omni protocol -- USDT . BTC itself is a cash system and does not support smart contracts. In order for BTC to support smart contracts, omni public chain is developed on top of BTC, so o ...

Besu is the enterprise Ethereum product in Hyperledger, and its biggest advantage is that it is compatible with the Ethereum main network. This tutorial describes how to use Hyperledger Besu to quickly start an enterprise Ethernet network and use JSON RPC for data query and transaction submission, and how to use Truffle to develop enterprise Et ...

Summary Alibaba cloud ant blockchain provides a contract experience chain, which is convenient for users to quickly experience the blockchain, and can quickly test and experience the functions of the blockchain free of charge. The following describes the use of contract experience step by step from three aspects: portal creation and related con ...

[TOC] Preparation before development Sharp tools make good work All the way through the development, I have accumulated a number of wallet development tools and websites to share with you. Those who have developed these things in this industry know that they are just for reference to those who intend to enter the industry. The best ETH wall ...

In this tutorial, you'll learn how to configure and dynamically update the access control list (ACL) of the Hyperledger Fabric block chain.The tutorial is divided into two parts: 1. Understanding and configuring the access control list for Hyperledger Fabric 2. Dynamically updating the access control list in the channel configuration.We will in ...

Hyperledger Fabric is a blockchain that emphasizes operation and maintenance. Since version 1.4, Fabric has included features for operation and maintenance of peer and orderer nodes. This tutorial will introduce how to configure the operation and maintenance management service of Fabric network nodes, and how to use Prometheus and statsD/Graphi ...