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Questions tagged [hyperledger-fabric]

Hyperledger Fabric is an implementation of blockchain technology. Use this tag for questions about this project.

Use this tag for questions about this project.

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6206 questions
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Hyperledger Fabric docs on Membership Service Provider - Questions

I read the docs on Hyperledger Fabric Membership Service Providers (MSPs) and not everything was really clear to me. The link to the part of the docs on MSPs is this:…
Michael
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How do the different MSP roles (member, admin, peer, client) affect Hyperledger Fabric Endorsement policies?

On the endorsement policy syntax documentation on https://hyperledger-fabric.readthedocs.io/en/release-1.2/endorsement-policies.html it is stated that principals are defined as MSP.ROLE where MSP is the MSP ID and the ROLE is either member, admin,…
Jonathan Declan Tan
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Error: failed to create deliver client: orderer client failed to connect to orderer: failed to create new connection: context deadline exceeded

I have been following the tutorial of Hyperledger Fabric Multi-Org setup and I was able to do it successfully. Now I want to customise it according to the name of the organization that I want to and I encountered below error when I was try to up the…
Jeson
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access denied: channel [mychannel] creator org [Org2MSP]

Im trying to setup a hyperledger fabric network wtih 2 organizations base on byfn. The network consist of the following nodes: cli peer1.org1.example.com peer0.org2.example.com peer1.org2.example.com peer0.org1.example.com orderer.example.com…
ze9620
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What is diffrence between enrolling and registering a certificate in Hyperledger fabric CA

What exactly is difference between enrolling and registering a certificate in Hyperledger Fabric CA. I am new to cryptography and i am really confused about the working of Fabric CA. Also how are certificates generated via cryptogen is diffrent from…
Asad Hayat
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Consensus of Hyperledger Fabric

I'm new with Hyperledger Fabric. I'm reading with the document of Fabric latest version, but I'm not clear with consensus of Fabric. What is the consensus that Fabric used? And how does it work? Please explain.
Jony
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Hyperledger - MSP error: the supplied identity is not valid: x509: certificate signed by unknown authority

I am currently working from the hyperledger fabric-samples. I've successfully run first-network and fabcar based on available tutorials. I'm now trying to combine the two to make a network with 3 peers in a single org and use the node sdk to query,…
vzlupe
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Network leak issue with Event hub and peer connections in Fabric Client Node JS SDK

I am trying to close the established connections when using the Hyperledger Fabric NodeJS SDK. Just running netstat -tlpan | grep 'ESTABLISHED.*[PID]' where [PID] is the node process ID shows the number of established connections to peers and the…
Psymatix
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Error when reading core config file: Unsupported Config Type

I am trying to pass in the channel configuration transaction artifact to the order-er using the command: peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls --cafile…
Sophoclis Stephanou
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Unable to enroll user in new org added to balance transfer sample

I am following Balance transfer from Hyperledger Fabric samples from this link. I have modified it a bit, now I have 3 Orgs with 1 Peer each. All goes fine till I enroll users to Org1 and Org2 but, when I try to enroll a user to my 3rd Org I get…
Atif
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HyperLedger Fabric Get Block Info - Fabric Go SDK

I used to set up a Fabric network and deployed a fabric network and basic application using a Fabric and Fabric GoLang SDK. I'm able to do the query and write to the chain. Is there any way to retrieve the Block Info? Like block height and current…
Tittu Vaghese
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Store User Credentials and validate via Fabric-CA

Can we use fabric-ca to authenticate the user to web application i.e. while enrolling the user we send ID and password, can we use the same password to authenticate the user to web app. If yes how can share few examples based on Node Js SDK And…
Hafeez Khan
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Difference between chain and state database in Hyperledger fabric?

What are the main difference between chain and state database in Hyperledger fabric. I'm confusing whether they both are same.
Moulali
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Hyperledger Fabric v1.0 - multiple "orderers" for single channel

The network configuration that is provided with the e2e_cli example has only one "orderer" container and a set of kafka/zookeeper containers. My questions are: Q1: Is the single "orderer" some kind of architectural restriction of HLFv1.0 when…
dl_
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steps to install cryptogen tool for hyperledger fabric node setup?

I am a java developer and i have started learning hyperledger fabric . I am trying to do the setup for fabric node setup . I am not sure how to install cryptogen tool . Please help me .
Robert Ravikumar
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