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Questions tagged [hyperledger]

Hyperledger is an open source collaborative effort created to advance cross-industry blockchain technologies. It is a global collaboration, hosted by The Linux Foundation, including leaders in finance, banking, IoT, supply chain, manufacturing and technology.

Hyperledger is an open source collaborative effort created to advance cross-industry blockchain technologies. It is a global collaboration, hosted by The Linux Foundation, including leaders in finance, banking, IoT, supply chain, manufacturing and technology. (https://www.hyperledger.org/)

Code and documentation is available at: https://github.com/hyperledger

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How to listen to the event(commit event) in Hyperledger Fabric?

We set up a fabric server, and put some transaction into it. And we have some applications those will cooperate with the fabric server. Here is a situation. Application send a transaction with fabric-sdk-java or fabric-sdk-node The fabric excute…
blackdog
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Hyperledger Composer - How can I check chaincode after deploying a network

I am new to Hyperledger, what i did yesterday is installed Oracle virtual box on my windows 10, followed by Ubuntu, followed by Composer prerequisites including Docker Engine, Compose and everything else. Finally followed the composer playground…
sam disilva
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How is data store in Hyperledger Fabric when using CouchDB as the Ledger State database?

I'm running the code in Chaincode for Developers Tutorial, to run a basic sample chaincode to create assets (key-value pairs) on the ledger. I'm able to invoke the chaincode using the cli peer chaincode invoke -n mycc -c '{"Args":["set", "a",…
Sebin Benjamin
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Azure Hyperledger Fabric Single Member Blockchain setup

I'm starting to use Azure to host a multi node Hyperledger network. I've previously been running on a local environment, but would like to use Azure. I've deployed the 'Hyperledger Fabric Single Member Blockchain' template, which creates five VM's…
Paul X
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How to change Endorsement policies

I changed the endorsement policy from "OR" to "AND" with BYFN and instantiate the Chaincode. But, the data in the ledger is not changed even after the Invoke is executed. I confirmed "OR" condition is working.(data in the ledger is changed) Kindly…
SKuri
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Error starting hyperledger fabcar sample application

I am trying to install hyperledger-fabric sample application from http://hyperledger-fabric.readthedocs.io/en/latest/write_first_app.html I am getting error similar to post mentioned here: hyperledger fabric fabcar error 2017-08-24 07:47:16.826 UTC…
Pras
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Hyperledger Fabric on Raspberry pi 3

I'm trying to deploy hyperledger fabric on a raspberry pi, but it doesn't work. I'm searching for some tutorial but i didn't found it, there are someone that just did it?
Dibri
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What is chaincode container in Hyperledger Fabric?

Chaincode is already installed in the peer file system. Why does instantiating chaincode start the chaincode container? What is the purpose of the chaincode container?
Seetharaman GR
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Hyperledger Fabric altering fabcar example

I've been working through the fabcar example and have it running it perfectly when no alterations have happened. What I'm trying to do is update the fabcar.go code to add more fields and simply play around w/ the example, however my docker images…
Chris Fricke
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How to fetch asset modification history in hyperledger fabric

I am using IBM bluemix blockchain service to tryout some smart contract logic for my asset sharing demo. Is there anyway to query the asset modified history in hyperledger fabric network. I have checked with documentations for both fabric 0.6 and…
Girish007
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Hyperledger Composer Incompatible versions error and the versions are the same

Executing: composer network ping -n calma-network -p hlfv1 -i admin -s adminpw I receive the following error: Error: Error trying to ping. Error: Composer runtime (0.8.0) is not compatible with client (0.11.0) Command failed The versions look the…
J.F.
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First network in hyperledger

I am trying to work on my first network in Hyperledger Fabric. Using the following documentation http://hyperledger-fabric.readthedocs.io/en/latest/build_network.html I have completed the setup till…
Katiyman
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How to check the blockchain height in hyperledger-fabric

I am playing with hyperledger-fabric v.1.0 - actually a newbie. How can I check the chain height ? Is there a command or something that I can use to "ask" about the blockchain height? Thanks in advance.
saradiss
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Privacy on Hyperledger Fabric v1.0

Can you explain some mechanisms of privacy in Hyperledger Fabric v1.0 - those already implemented and those planned to be implemented in the future? I understand channels are like seperate blockchains. I also went through the document on…
neuromouse
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What is consensus in hyperledger

On the below link, there is a paragraph that says: http://www.coindesk.com/stellar-ripple-hyperledger-rivals-bitcoin-proof-work/ “Each node publishes a public key. Any message coming through the node is signed by the node to verify its format. Once…
Saurabh
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