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Questions tagged [hyperledger]

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Hyperledger Blockchain hash function and public-key encryption

I am wondering what is a hash function and public-key encryption that uses to sign any transaction in Hyperledger blockchain platform?
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Violation of immutability while purging of private data from fabric ledger?

If private data has a lifespan, and it is purged after this lifespan. Doesn't this violate the fundamental principle of immutability and the core idea of the blockchain. I know that the hash of these ...
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Which “Hyperledger Project” is more adaptable to be run on “micro-controller”?

Hyperledger has 5 different blockchains: (1) Hyperledger Fabric (2) Hyperledger Burrow (3) Hyperledger Indy (4) Hyperledger Iroha (5) Hyperledger Sawtooth Regarding the fact that micro-...
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1answer
29 views

What is single member blockchain?

I just heard about single member blockchains like quorum and hyperledger-fabric. So what does single member mean? Is this some kind of restriction or what?
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1answer
71 views

How does hyperledger fabric handle random number generation?

Given that one can write chaincode in JavaScript or Go and freely call random methods provided by the language libraries, how does the network handle the randomness?
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1answer
66 views

Hyperledger consensus protocol

I'm soo deep inside the consensus protocols like PoW, PoS, PoA or other variants used on permissioned/private blockchains such as JPMorgan's Quorum (Based on Raft), Istambul etc.. But I've not ...
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reducing the size of images produced by the hyperledger fabric

I cloned the hyperledger-fabric from: https://github.com/hyperledger/fabric.git and built one of the examples with the script "startFabric.sh" with "node" and "go". The online documentation notes ...
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1answer
38 views

How can we use Blockchain for Land Registration Use Case?

How and where can we integrate Blockchain in this use case? Say buyer and seller visits the registration office with sale deed they prepared. The details in the sale deed is compared by the ...
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2answers
155 views

Why are blocks in a permissioned blockchain linked together?

My question: Do the blocks in a blockchain without proof-of-work (i.e. a permissioned blockchain) have to be linked together via a cryptographic hash? Longer version of my question: (Please correct ...
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1answer
64 views

Benchmarking on Hyperledger Fabric

Is there any public benchmarking code and results for Hyperledger Fabric v1.0 blockchain? IBM claims a transactions rate of 3500 tps, but I am not able to find any public code of the benchmarking ...
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4answers
2k views

Hyperledger fabric vs Sawtooth lake which platform is appropriate for Supply chain management?

I am planning to build supply chain management system with Blockchain. I have read many blog posts related to the topic, and eventually, I get Hyperledger as a right choice for Blockchain Network. but ...
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2answers
148 views

HyperLedger Fabric from IBM is fork of Tangle or Etherium?

I read as if HL Fabric was the most interesting thing ever created on the use of blockchain, but when I read the documentation (very short) about Hyperledger Fabric I came across some coincidences. ...
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1answer
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Blochchains that support data privacy and/or strengthen parties pseudonymity

Question 1: Is there any blockchain that allows users to store their private data in the chain? For instance, the transactions and amount of Bitcoin one has is hidden from others. Question 2: Is ...
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3answers
170 views

What is the main difference between “ enterprise” blockchain and regular blockchain?

We have some blockchain-based cryptocurrencies such as Bitcoin or Ethereum. On the other hand, we have some blockchain-based frameworks such as hyperledger and R3 that are designed for businesses. ...
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1answer
364 views

IBM Hyperledger Fabric Running Multiple Nodes on Multiple Datacenters & PCs

At the moment I'm playing around with some of the Hyperledger Fabric demos that IBM has on their cloud platform Bluemix. When you initially spool up an instance you're offered more than one option ...
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1answer
103 views

Relative licensing restrictions of Ethereum and other projects- Open Source?

Is Ethereum open source? I've heard different things from different people. Stephan Tual has written: "Everything at Ethereum, including our website, our tools, our whitepapers and of course our ...