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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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Cryptocurrency based on Hyperledger

Does Hyperledger Fabric support possibility to create a cryptocurrency like well know Bitcoin/Ethereum? I don't mean tokens which I can implement by chaincode.
Kirill Bulgakov
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Getting connection failed in Hyperledger Fabric sample

Hello i am new to Hyperledger Fabric. I have just started to work with it, i was doing the very first sample from http://hyperledger-fabric.readthedocs.io/en/latest/write_first_app.html I followed prerequisite installation from…
Katiyman
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How to avoid the Fabric CA beeing a single point of failure?

if I understood correctly, every peer in a fabric blockchain network (somehow interconnected through gossip) will only accept incoming connections from other peers if they use a HTTPS connection with a public key signed by the Fabric CA. Is that…
Romeo Kienzler
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Can I use the public/private key generated by the MSP in Hyperledger Fabric v1.0 for encrypting/decrypting data?

In Hyperledger Fabric v1.0, a user can be registered and enrolled in the blockchain network through the MSP (member services provider). The user is given a public key (in the certificate) and a private key after registration and enrollment. The way…
A Pantola
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Hyperledger fabcar sample fabric showing connect failed ERROR

I am trying to install hyperledger and run chain code. I followed all the steps as directed here. But getting error error: [client-utils.js]: sendPeersProposal - Promise is rejected: Error: Connect Failed while running the query.js. I have…
Subhankar
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Error cryptogen tool in Hyperledger Fabric

I am attempting to install and run Hyperledger Fabric on OSX. Installation seems to have gone well. However, when I run the cryptogen tool I am getting the following warnings: Apples-MacBook-Pro:e2e mycomputer$ ./../../$os_arch/bin/cryptogen…
philstan
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retrieving hyperledger complete world state

Is there a chaincode shim function with which I can retrieve all the keys (maybe including values) of the world state in a Hyperledger Fabric chaincode?
Foo L
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How to print and view logs from Hyperledger Fabric chaincode

I want to see logs while calling functions in my chaincode, for debugging purposes. I tried something like this: var logger = shim.NewLogger("chaincode_example02") logger.Info("get_caller_data called"); I've viewed logs of the peer running the…
Chaitanya Reddy
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Cannot compile chaincode

I am trying to compile the chaincode_example02 followed by this guide with Option 2 (for Mac). All steps were passed except compiling the code. I have the following error: cd $GOPATH/src/github.com/chaincode_example02 go…
eugenn
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Failed to get network: Failed to create new channel client: event service creation failed: could not get chConfig cache reference

Failed to get network: Failed to create new channel client: event service creation failed: could not get chConfig cache reference: QueryBlockConfig failed: QueryBlockConfig failed: queryChaincode failed: Transaction processing for endorser…
dev
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Aca-py 0.6.0: INFO Ledger instance not provided error/bug?

i am new to Hyperledger Aries and i can´t figure out what i am doing wrong. Environment: Ubuntu16LTS Docker 18.09.7 build 2d0083d hyperledger-aries-python version: 0.6.0 (sourcecode) From the aca-py repo…
Futureman2007
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What kind of consensus used in Hyperledger Fabric?

I don't know if this question make sense, I know Raft is consensus algorithm and use etcd to distributed the data, and i know etcd in Raft Ordering Service have a similar job with zookeeper in Kafka Ordering Service, but what I don't understand is,…
NUR HAZBIY SHAFFAN
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enabling SSL for Hyperledger Fabric couchdb

I want to use couchDB(V. 2.3.1) with SSL enabled, so I added [ssl] part to /opt/couchdb/etc/local.d/docker.ini file as shown below: [ssl] port = 6984 enable = true cert_file = /etc/hyperledger/fabric/tls/server.crt key_file =…
Pouya Shojaei
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Hyperledger Fabric 2.0.1: Error: Failed to connect before the deadline on Discoverer- name:

I think Fabric is trying to discover peers and orderers as soon as they come to realize they do exist but not matching the machine IP address. Is there a way to specify the machine IP override for TLS enabled communication? This is the full…
Victor Lopez
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How to add a new Orderer Organization to existing Hyperledger Fabric network

I am trying to add a new Orderer Organization to RAFT based existing ordering service. I am using the first-network from fabric-samples as the base network. While generating crypto-material, I have modified to generate crypto-material for 1 more…
Chintan Rajvir
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