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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.

Another good idea is to reach out to the community at

Documentation can be found at

Refer development lifecycle and officially provided resources at

6206 questions
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Hyperledger Fabric Error - Attempted to contact 2 Peers. Last error was Error: Failed to connect before the deadline

I bring up 4 peers using byfn.sh. Everything comes up fine and I can see the orderer, peers, CA nodes, etc. running in docker containers I then use a custom service layer application that uses the Fabric Node SDK to connect with this network. I…
Ashish Chandra
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Hyperledger Explorer timeout: don't show transactions after 4 hours on Kubernetes

I'm running a Hyperledger Fabric + Explorer application on Kubernetes. I'm able to create transactions and Hyperledger Explorer show them. But after 4 hours and 30 minutes (on average), the Hyperledger Explorer don't update himself with new…
MohamedLEGH
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Getting error unexpected status: SERVICE_UNAVAILABLE -- backing Kafka cluster has not completed booting try again later

I have created HLF on aws eks. I am trying to implement kakfa based orderer with 3 orderer, When I am implement it. its giving error like "Error: got unexpected status: SERVICE_UNAVAILABLE -- backing Kafka cluster has not completed booting; try…
Abhirock
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Hyperledger Fabric Node.js SDK: Issue with offline transaction signatures

I am trying to follow this tutorial: https://hyperledger.github.io/fabric-sdk-node/release-1.4/tutorial-sign-transaction-offline.html I created a complete Hyperledger Fabric network using this…
guillaume
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Hyper Ledger Node SDK Rest Server building in Windows 10 Issue

Guys can any one help me that. Can we create rest server in windows OS?. I have successfully created ad installed chain code in aws. Just I want to query it in windows local using node sdk. I successfully installed chain-code in aws managed block…
Sharad
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Complex datatypes in HyperLedger Fabric

I read in out the documentation on HyperLedger. However, I cannot find any information on storing complex datatypes by that I mean if it is even possible. For instance lets say we have two objects: an author and a book. Is it possible to create a…
CodeSamurai777
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ERRO 001 Cannot run peer because cannot init crypto

Am using Hyperledger latest version 1.4 to build my network following this tutorial https://hyperledger-fabric.readthedocs.io/en/release-1.4/build_network.html and whenever I try to run this command: peer channel create -o orderer.example.com:7050…
peachpy_shingik
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Do Hyperledger platforms have full/light-weighted nodes like Ethereum?

I'm new to Blockchain and trying to understand if Hyperledger platforms (such as Fabric and Sawtooth) offer full/light nodes separation like Ethereum. Thanks.
dipe
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Hyperledger 1.4.4: Private data is not purged

I have a test network with solo orderer and one private data collection. BlockToLive is set to 3. I started to add new entries with putPrivateData and putState. Initially I observed, that the older private entries were purged. However, after a…
Fedor Petrov
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unable to invoke chaincode from client : Error processing transaction. Error: PEM encoded certificate is required

i am tring to invoke chaincode command from client by i get Error processing transaction. Error: PEM encoded certificate is required this is my client code i am using to connect to the fabric network and invoke the chaincode. i can invoke and…
Mike Araya
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How do I use QSCC to query the block information in hyperledger fabric?

I have been trying to get block information and other block level queries using QSCC. Can someone please help me with the steps/ or direct me to a helpful resource. So far I haven't come across any helpful information apart from the docs…
Saif Ali
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AWS Managed Hyper ledger fabric block chain client.getUserContext is returning null

I am trying to to create REST Server in windows local for Hyper ledger block chain, When I try to enroll user I am getting error called user not found. Same solution I tried in AWS EC2-instance is working fine but, if I am trying to call chain code…
Sharad
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Why Invoke query does not performed valid transaction?

I have setup the byfn from here. What I am going through that is invoking by this command. peer chaincode invoke -o orderer.example.com:7050 --tls true --cafile…
R.A.Munna
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is it good to develop a hyperledger fabric chaincode using go sdk?

I need to develop one project on hyperledger-fabric using a GO SDK. But as per the latest release GO SDKs that have not yet been officially released. I had gone through with this post. But still, is it better to use a Go-SDK for any development of…
Isha Padalia
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Got "this policy requires 1 of the 'Writers' sub-policies to be satisfied: permission denied" error when creating a channel

When I try to create a channel, I got an error like below: implicit policy evaluation failed - 0 sub-policies were satisfied, but this policy requires 1 of the 'Writers' sub-policies to be satisfied: permission denied As the error message said, it…
byron1st
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