Questions tagged [permissioned-chain]

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Consortium vs. Permissioned Blockchains

I hear these two terms interchangeably Consortium Blockchain and Permissioned Blockchain. Are they the same? If not, can you please show the difference between them. P.S. Since there exists no ...
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Blocktime zero (period:0) with clique in permissioned blockchain

I am considering to set the blocktime to zero (clique.period:0) in a permissioned private blockchain with known but untrusted nodes. The reason to do this is having a minimum transaction process ...
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1answer
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How to permission (disallow) smart contract deployment on private Ethereum network?

On a private Ethereum network, what is the best way to permission the deployment of who (and what) users can deploy? One obvious way would be increasing the gas cost of CREATE opcode. Yet, I do not ...
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1answer
26 views

How mining happen in private and permissioned blockchain?

In public blockchain a miner gets rewarded for mining a block. But in a private or permissioned blockchain, if there are no rewarding facilities available, how does the mining happen? Also, is it ...
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Mirroring public Ethereum blockchain to a private chain

I am working on tokenised securities space. Our plan is to run tokenised securities on a public Ethereum blockchain. There is an operational risk that public blockchain becomes unavailable and ...
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1answer
22 views

Is a PoW-based Ethereum private chain a permissioned blockchain?

If I creat a ethereum private chain through geth. Is the Ethereum private chain a permissioned blockchain?
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1answer
107 views

How are new users authenticated into Quorum network

I could find from online readings that Quorum has a Network Manager component that controls nodes access to network to created permissioned network of nodes. But, I couldn't see explanation on how ...
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102 views

How to prevent DDOS in ethereum using PoA?

Using clique, how to prevent DDOS attack? Is there a way to set a whitelist of nodes which can send transactions, and blacklist all the others?
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1answer
147 views

Quorum: permissioned-nodes.js and static-nodes.js

How do I proper use permissioned-nodes.js? According to this information: https://github.com/jpmorganchase/quorum/wiki/Security If the --permissioned flag is set, the node looks for a file named &...
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Questions with Building a dapp using Quorum [closed]

I am working on a project to build a dapp for a trust system using Quorum, which needs a permissioned blockchain for data privacy. Only the admin, beneficiary, caregivers, case manager and authorized ...
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2answers
77 views

Passing data between two Ethereum networks

I have some IoT(Internet of things) nodes sharing the received data from sensors with each others. I partitioned them to 2 permissioned networks: Network 1 includes: X,Y,Z nodes trusting each other,...
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1answer
34 views

Block an account in a permissioned blockchain environment

We are developing a permissioned blockchain environment with Ethermint. Companies have to apply to join the blockchain environment, we create and give them their Ethereum account. One of the main ...
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1answer
32 views

Is blockchain always “public”?

Is the following definition of blockchain by its wikipwdia page correct? Where it is mentioned: A blockchain is a decentralized, distributed and public digital ledger ... Cannot we have a ...
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461 views

Interoperability between Ethereum's Public Blockchain and Quorum's Private Permissioned Blokchain Network

Scenario: I am trying to set two blockchain networks on a platform: Ethereum's Public Blockchain Network: For payment system in the form of ERC20 Tokens and Cryptocurrencies. Quorum's Private ...
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229 views

Quroum - High gas consumption for ether transfer

I am running a local 3-node Quorum cluster with Raft consensus. The network is setup using quorum-maker. All the settings are default except that I have added a custom account in the script so that it ...
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1answer
307 views

Best practices for a secure Ethereum private network? [closed]

What are the best practices for an Ethereum private network with n nodes (programmed with Geth), to be secure from possibles external attacks? I mean, which config parameters are recommended during ...
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1answer
55 views

How to ensure security on private consortium?

When you have a private/permissioned ethereum consortium, you are somehow trusting the members of the network. How do you prevent a single user for tampering part of or the full chain, given that it ...
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0answers
24 views

Miner incentives in a permission blockchain with a digitally native asset on Ethereum?

Would be very grateful if someone could give me their opinion and ideas on whether this is possible, and if so, how this might be done: If one were to build a permission blockchain on Ethereum with ...
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1answer
305 views

Permissioned blockchain for company

Looking for permissioned blockchain for company governance and equity accounting with ability to interact with cryptocurrencies (permissionless blockchains), ie. sale some stake for ether. Could proof-...
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336 views

What is a permissioned blockchain?

What is the meaning of a permissioned blockchain? I know it is a private blockchain, but why is it called permissioned?
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3k views

Estimating costs to implement a permissioned blockchain

I'm trying to ascertain what inputs and costs would be associated with implementing a permissioned blockchain like Hyperledger or Quorum. So far I have come up with the hardware costs (i.e servers) ...
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1answer
686 views

Regarding external file storage

Let's say you have a private blockchain, a DApp with an workflow to store and retrieve data from that blockchain. Now there is a need to store binary files and access it in a permissible way. One way ...
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527 views

Are there any cryptocurrencies built by modifying ethereum code, like there are many alt-coins based on bitcoin code?

Is it legal to build a separate blockchain with our own coins/tokens and miner-code to mine those coins/tokens (not a private one) based on ethereum open-source code ?
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What are the limitations of proof of authority

The parity implementation of Ethereum provides proof of authority as an alternative consensus mechanism. I have not found much commentary about the advantages/limitations of this model for ...
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1answer
616 views

Ethereum-based permissioned blockchain implementations

I am new to Ethereum. Trying to find what all permissioned blockchains are available at the moment which are among the most popular ones. I am just trying to avoid spending unnecessary time to ...
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3answers
10k views

Is it possible to build a private (permissioned) blockchain with Ethereum?

Ethereum is a great blockchain, but for some services the transaction fee is prohibitively too expensive. Is there any project and/or guideline on making Ethereum so it works on permissioned ...
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2answers
1k views

Permissioned blockchain in ethereum

If I create a new Ethereum blockchain using a new genesis block and network id, is it possible to restrict the access to it only to specific nodes? In other words, can I avoid that undesirable nodes ...
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3answers
4k views

Where can I find the source code for Quorum, the permissioned implementation of Ethereum supporting data privacy?

Where can I find the source code for Quorum, the permissioned Go implementation of Ethereum supporting data privacy?
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1answer
306 views

Eris : error compiling contracts

i try to deploy a contact using Eris Platform, i followed the tutorial in the documentation of Eris ( https://monax.io/docs/tutorials/getting-started/index.html?redirect_from_eris=true#fnref:1 ) but ...
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1answer
193 views

Regarding private/permissioned blockchain

I would really appreciate if someone could help me with my concerns: Let's say we are a bank consortium and we own a permissioned/private blockchain. Is this possible for us to open our blockchain ...
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2answers
6k views

Private vs Permissioned blockchains

I have seen these two words - private and permissioned, a lot. Sometimes, they're used interchangeably. I don't believe these words have the same meaning. Can anyone give a detailed description ...
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2answers
1k views

How to run a permissioned ethereum blockchain?

As far my understanding to Ethereum, it is public chains.but how can it support permission machnism in detail, even from source code perspective. Can Ethereum be used for establishing private ...