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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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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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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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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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Hyperledger Sawtooth vs Quorum in concurrency and speed

Let's suppose I have 50 machines deployed in multiple locations, every machine has Linux as OS. The machines have not a continued internet connection, for every 2h without connection, they have a 45min period of Wi-Fi connection. During these 2h the…
Across
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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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Smart Contracts (Hyperledger vs Eth)

Quick few questions on smart contracts how does hyperledger smart contract (chaincode) stack up against ethereum ? hyperledger - golang; Expressibility? ; Performance? ; Security? Ethereum - solidity; Expressibility ; Performance? ; Security?…
Nathan Aw
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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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Hyperledger: get "/bin/bash: ./scripts/script.sh: No such file or directory" when running "./byfn -m up"

I'm a newer for the hyperledger and just studying it by following the tutorials on http://hyperledger-fabric.readthedocs.io. I am trying to build the first network using "first-network" in the fabric-samples. The ./byfn -m generate is OK. But after…
weijia_wang
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how exactly blocks are created in hyperledger fabric

I am going through hyperledger fabric V1.0. Need to know the internals of hyper-ledger. 1) How and where the blocks and transactions are saved in hyperledger internally. 2) Is it in the NoSQL DB (Level DB, Couch DB) ??. If yes, what is the…
Pradeep Padmarajaiah
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world state persistence in hyperledger fabric

In hyperledger fabric World State is the collection of variables containing the results of executed transactions . Is the world state persisted somewhere in disk or it will be in primary memory? What if the peer was restarted?
Max_dev
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Hyperledger chaincode external service calls

Is it possible to make external service calls from chaincode? For example, if I need to lookup the current exchange rate or today's temperature using a public API how can I make that call from the chaincode? If external calls are allowed then there…
Hitarshi Buch
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