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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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Is blockchain a decentralised database?

I understand bitcoin uses blockchain technology to maintain a decentralised ledger of all transactions. I have also read many posts eluding to future applications of blockchain technology, none of which have been very clear to me. Is blockchain…
Dercni
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Are blocks mined in HyperLedger Fabric?

I have been reading the documentation on how HyperLedger Fabric's project is implementing a open source BlockChain solution: https://github.com/hyperledger/fabric/blob/master/docs/protocol-spec.md I have seen that PBFT consensus algorithm is used,…
Marc Cayuela
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Hyperledger Fabric GOSSIP_BOOTSTRAP & GOSSIP_EXTERNALENDPOINTS

I was looking into the docker configuration files and found two parameters in peer environment as shown below: environment: - CORE_PEER_ID=peer0.org1.example.com - CORE_PEER_ADDRESS=peer0.org1.example.com:7051 -…
Akshay Sood
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hyperledger sawtooth lake -- Intel only or not?

I understand that hyperledger sawtooth lake uses new secure CPU instructions to achieve Proof of elapsed time (PoET) Does this mean that hyperledger sawtooth lake can only be used with Intel hardware? Can other chips be used?
Nathan Aw
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How to get all transaction history against a chaincode in Hyperledger fabric

I am able to do transactions in Hyperledger (fabric implementation). I want to see all the transactions and its payload details initiated by a user by passing the user's key. for example: A transfers 10 units to B A transfers 5 units to C D…
Ahmed Shareef
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What are reasons for the deprecation of Hyperledger Composer?

Hyperledger Composer is a platform for accelerating the development process of Business Network Application. Why is it deprecated and what are the alternatives to composer for development of BNAs?
Srikar Reddy Karemma
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measuring Hyperledger Composer performance using Hyperledger Caliper

Is it possible to measure Hyperledger composer network performance which runs on Hyperledger fabric using Hyperledger Caliper framework? If yes can you guide me how can I change the configuration to connect Caliper to running Hyperledger composer…
ethertest
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How can I set up hyperledger fabric with multiple hosts using Docker?

I work on the Hyperledger Fabric v1.0 and would like to make the Getting Setup work on multiple hosts. For now, 2 would be great. Here is what I want to do: Host1: start an orderer and 2 peers Host2: start 1 peer Host2: A client creates a channel…
ecn
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What exactly are Channel in Hyperledger Fabric v1?

This is a question related to Fabric v1 architecture: From my understanding, Peers subscribe to a Channel to the ordering service and then receive the channel related blocks from it as they are created. So: Channel is like splitting the Blockchain…
guillaume
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Where actual blockchain state data stored : in memory , in file or in database?

I have a query, where do blockchain data saved in every node. After a long search in google, StackOverflow, and some blogs, like got many answers: like: it saved in a database like level-DB or rocks-DB, some said it saves in memory in a variable,…
subhadip pahari
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Byzantine fault tolerance (BFT) and Crash fault tolerance (CFT)

Crash fault tolerance (CFT) is one level of resiliency, where the system can still correctly reach consensus if components fail. While Byzantine fault tolerance (BFT), which says the orderer can do its job even in the presence of malicious actors.…
BlockchainGeek
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What is the size of the default block on hyperldger fabric?

I'm trying to create a estimation of the size of a chain if i create a new blockchain using hyperldger. In order to have an idea of disk space usage i would like to know that is the average size of a default block in the hyperldger fabric. Thank…
Cortesao
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Hyperledger Fabric scalability

I have an already built Hyperledger Fabric system which can process x tps(transaction per second). In the future, maybe the requirement for the system is not just x tps. Then, how to scale up Hyperledger Fabric system to satisfy higher requirement?
CK01
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Error when try to instantiate chain-code on Hyperledger Fabric

I was trying to create a custom business network based on the specification described here: https://hyperledger-fabric.readthedocs.io/en/latest/build_network.html#using-couchdb I have created 5 peers for org1.example.com and one peer for…
branko terzic
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Hyperledger Fabric CLI docker container

I have couple a questions regarding HF CLI docker container and some of CLI commands. First of all, can someone explain the purpose of this container in context of docker container which is started alongside other docker containers required for HF…
branko terzic
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