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Questions tagged [private-blockchains]

38 questions
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Is a private blockchain better in any sense than a database?

Since the banks appear to be currently looking into the idea of "blockchains" but don't want to be dealing with "Bitcoin", it seems that there is a lot of hype for private blockchains out there like Eris or Hyperledger. However, a lot of people tend…
ThePiachu
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What can blockchain do that normal databases systems won't?

Aside from cryptocurrencies, what advantages may blockchain(either public or private) have and real life use cases that can be more useful implemented in blockchain over traditional databases based systems ?
Youssef Mohamed
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Why are banks and other centralized entities interested in block chains?

Apparently banks and other centrialized entities are interested in block chain technology. My question is, why? The whole point of block chains is for decentralized, trustless, consensus. Bitcoin, for example, uses Blockchain to reach consensus on…
PyRulez
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How many block chains exist?

I´m beginner and I understood there is an unique huge common block chain to be used by world wide and there a several different crypto currencies types by running on that . Am I correct? Thank you to all
Minerando
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Blockchain as a service - is this really just a replacement trusted third party?

One of the key tenets of Blockchain technology is that it is a trustless, distributed ledger which removes the need for a trusted (but hackable) third party to oversee the veracity of transactions (e.g. a bank). The original concept was implemented…
Mark Tackley-Goodman
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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. Question: What is an enterprise blockchain? Is it…
user153465
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What is special about a private blockchain based on proof of stake?

I recently came across a paper published in 1988 called "A quorum-based commit and termination protocol for distributed database systems". I could not read it because it is not free, but to me this sounds very similar to what a private blockchain…
bitcoinertt
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How to reset bitcoin testnet

I'm running a private bitcoin network and would like to reset the bitcoin blockchain data back to the genesis block. I've tried deleting all the files in ~/.bitcoin/blocks and ~/.bitcoin/wallets but bitcoin-cli -testnet getblockchaininfo still…
JBaczuk
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What is the point of a permissioned blockchain?

As far as I understand, the whole point of a blockchain is to prevent failures of the kind where a node produces arbitrary data with malice - i.e., to guard against the case you don't trust some nodes of the network. If your nodes are trusted,…
MaiaVictor
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Bitcoin private network on Amazon EC2

I am looking to set up a private network of Bitcoin nodes over multiple machines (e.g, on multiple VMs on Amazon EC2) for experimentation. I want to be able to control how the different nodes are interconnected to each other in this network. Is…
cepheus
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Can you have a cryptocurrency with a single source of truth?

Can you have a cryptocurrency that's based on TRUST? (how dare I use this dirty word haha) Everyone who participates in the system agrees to trust this 1 party only, because they find them trustworthy. And only they are allowed to add blocks to the…
Ivelin
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Permissioned or Permissionless blockchain? Which one is PoS more adapted for?

Since in proof-of-stake (PoS) there is no mining process, according to functionality of permissioned and permissionless blockchains, which type is PoS more adapted for? In the other words, is a PoS-based public permissionless blockchain as secure a…
Questioner
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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?
O. Shekriladze
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Do private blockchains need consensus protocols?

My understanding is that in a private blockchain, the participating nodes verify and agree that the block is valid and only then add it to the blockchain.In this scenario, are consensus protocols (such as RAFT, PAXOS, etc.) needed? Am I missing…
bruce
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How would a centralized block chain work?

If I'm a company who pays my employees and my supply chain with my own currency created on a block chain and they can spend it wherever it is accepted, would I need a POW or POS scheme to maintain the veracity of the ledger of transactions? Or is…
user51332
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