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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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Developing token in hyperledger composer

I am trying to build Chaincode in Hyperledger composer where I need to have the concept of token. So I am thinking to create one specific type of participant which will initially hold the tokens. And then this TokenHolder Participant will then…
Md Muntasir Mamun Joarder
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How to make Blockchain Assets Indelible?

Is there a certain way to commit a transaction using the Hyperledger Composer API once I insert or update an asset in a registry? The reason why I ask this question is, after I insert an asset, I can delete it from the registry using the…
Srini Karlekar
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Error invoking chaincode using Node.js SDK [TypeError: Cannot read property 'getConnectivityState' of undefined]

Failed to invoke successfully :: TypeError: Cannot read property 'getConnectivityState' of undefined /opt/share/hyperledger/node_modules/fabric-client/lib/EventHub.js:355 if(self._stream) state =…
anjy
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Multi Org Setup using HyperLedger Composer in multiple machines

I am working on setting up a Business Network for Multiple Organizations (two physical machines). I did the setup of a business network using Hyperledger Composer Playground and achieved querying, rest-server implementation etc. I have configured a…
csLijo
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Specify endorsement policy at transaction level in Hyperledger Fabric

In Hyperledger Fabric, we have the endorsement policy specified at chain code instantiate time. For example, peer chaincode instantiate -o orderer.example.com:7050 --tls --cafile…
Krupakar
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Hyperledger and ICO token

Is it possible to make interact a ERC20 token with a hyperledger permissioned blockchain? I would like to have my private blockchain and then be able to the participants use that token on that blockchain. or theres any other alternative to…
daultimate
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How to instantiate all chaincodes at once in the channel?

I have a question about chaincode instantiation. I think all same chaincode in a channel will be instantiated all at once by one request from this doc. http://hyperledger-fabric.readthedocs.io/en/release-1.1/install_instantiate.html Note: The…
Hitoshi Kondo
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Hyper Fabric [fabric-sdk-go] Error: CONNECTION_FAILED. Description: dialing connection timed out

when I try to Create a request (proposal) and send it by using Execute, ctxCh := sdk.ChannelContext("mychannel", fabsdk.WithUser("user1")) chClient, err := channel.New(ctxCh) if err != nil { log.Fatalln("error from New channel",…
Unknown
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startFabric.sh fails with docker compose command not find

I am following the tutorial on writing your first application to make a sample hyperledger fabric application. I am using Ubuntu 16.04 and I have installed prerequisites as well as binaries and docker images. When I move into fabric-samples/fabcar,…
E. Erfan
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Hyperledger Composer - Not getting console.log messages

For some reason, I've stopped getting console.log() messages to the dev javascript browser console. I'm running HyperLedger Composer locally on a Mac. My Current Environment - ├── composer-cli@0.19.1 ├── composer-playground@0.19.1 ├──…
Grendel
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Create and join channel error ; Hypereldger fabric tutorial

I'm trying to a tutorial of hyperledger fabric on Mac. (http://hyperledger-fabric.readthedocs.io/en/latest/build_network.html#create-join-channel) At 'Create & Join Channel' part, I have 2 questions. 1.I typed export CHANNEL_NAME=mychannel, but…
Shigeru
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do I need to use fabric sdk if am using hyperledger composer

I am using hyperledger composer for transaction invocation and all the stuffs related to resource(participants, assets etc) manipulation. I have generated the server using composer-rest-server, and also generated the angular frontend using yeoman…
Rahul Singh
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can rest server be launched inside the hyperledger/composer-playground container?

Can rest server be launched inside the hyperledger/composer-playground container? Want to know ways to interface with business network inside the play ground I get following error when I try to install composer-rest-server Error: Can't find Python…
Bharath
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Communicate with Hyperledger Fabric orderer

I set up Hyperledger Fabric net using devmode (https://github.com/hyperledger/fabric-samples/tree/release-1.1/chaincode-docker-devmode) and started chaincode. I need a way to communicate with the network (create/join channels, invoke chaincode). I…
PowderMind
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Error in accessing the Hyperledger composer setdefault api

I am using /wallet/{name}/setDefault api, via Angular4 application. this.http$.post(url + /api/wallet/${a.name}/setDefault,{withCredentials:true}).subscribe(res => console.log(res)) I am getting this error:401 (Unauthorized). Same way i am calling…
naik3
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