Tag Archives: hyperledger fabric

Hyperledger Fabric: 10 things you should know

Posted on March 6, 2023 by Siddharth Jain

[This post assumes some familiarity with Hyperledger Fabric. You can use it to test your understanding of HF.] What are the top ten things I would tell someone about Hyperledger Fabric? For more tips, you can checkout my book.

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Notes on Programming Hyperledger Fabric

Posted on December 17, 2020 by Siddharth Jain

I just finished writing a book:https://www.amazon.com/dp/0578802228 In this post I am making some notes and fun facts about the book for remembrance. Original TOC Final TOC Blockchain Primer Introducing Hyperledger Fabric A proof of concept app Setting up your infrastructure … Continue reading →

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Fabric CA Step by Step – Part 2

Posted on March 27, 2020 by Siddharth Jain

Restart Fabric CA server. This time we don’t use -b switch since we have a fabric-ca-server-config.yaml from previous run. Even if we used -b switch it will be ignored. note that it says 2020/03/27 10:38:13 [INFO] The CA key and … Continue reading →

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Step by Step with Fabric CA

Posted on March 26, 2020 by Siddharth Jain

fabric-ca-server (v. 1.4.5) can be started without giving it any config or its own self-identity (public cert and private key) from an empty directory run below command. in below bob is the bootstrap user and bobpw is his password. we … Continue reading →

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Fabric JIRA queries and links to uncommon resources

Posted on March 4, 2020 by Siddharth Jain

To see the issues that I am watching (https://stackoverflow.com/a/45876107/147530) https://jira.hyperledger.org/browse/FAB-17584?jql=key%20in%20watchedIssues()%20ORDER%20BY%20created%20DESC or navigate to Issues -> Search and type key in watchedIssues() ORDER BY created DESC To see the issues I have filed https://jira.hyperledger.org/browse/FABN-1234?jql=reporter%20%3D%20siddjain or type reporter = siddjain in search … Continue reading →

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Cryptogen 1.4.3 Bugs

Posted on October 23, 2019 by Siddharth Jain

As is common for Fabric, the cryptogen utility (1.4.3) has various bugs as of this writing: The most important bug is that the admincerts folder is empty. see https://jira.hyperledger.org/browse/FAB-16933 The next bug (FAB-16936) is that if you are enabling Node … Continue reading →

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Understanding Node OUs in Fabric

Posted on October 23, 2019 by Siddharth Jain

ever seen this in configtx.yaml and wondered what it means? Let me try to explain. Taking this example in configtx.yaml: Policies:   Readers:   Type: Signature   Rule: “OR(‘Org1MSP.admin’, ‘Org1MSP.peer’, ‘Org1MSP.client’)“   Writers:   Type: Signature   Rule: “OR(‘Org1MSP.admin’, ‘Org1MSP.client’)“ … Continue reading →

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Hyperledger Fabric: Running fabric-ca-server with LDAP

Posted on May 8, 2019 by Siddharth Jain

Background Fabric-ca-server’s main purpose is to act as a CA (certificate authority) that can be used to obtain X509 public cert and private key – something needed in order to write records to fabric ledger. Why? because every entry is … Continue reading →

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Hyperledger Fabric Consensus Explained

Posted on April 1, 2019 by Siddharth Jain

What is consensus? Definition: Consensus is the mechanism that ensures all copies of a distributed ledger are the same i.e., at all times I will have exactly the same copy of the ledger as you. This is critical – imagine my … Continue reading →

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