Questions tagged [quorum]
Q&A related to Quorum, the permissioned Go implementation of Ethereum supporting data privacy.
274
questions
0
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2answers
2k views
compare dates in solidity
I need to compare dates in solidity, so as to complete a business rule. There is no date type in solidity which ca be used to store date and perform calculations on it.
So help in this regard will be ...
1
vote
2answers
1k views
Store JSON String in Solidity
I have trying to store a JSON string in my solidity code string variable, it only stores the string on the constructor, but if try and store the same data in the function call it never saves it.
...
1
vote
2answers
1k views
Gas Price Must Be Greater Than Or Equal To 0.1 GWEI in Metamask
I have setup a private quorum network, connected the metamask with my quorum network and it is connecting but when am trying to do transaction getting an alert Gas Price Must Be Greater Than Or Equal ...
2
votes
1answer
918 views
Issue in truffle migration with Quorum
I am following this tutorial http://truffleframework.com/tutorials/building-dapps-for-quorum-private-enterprise-blockchains for Quorum installation..
I have successfully installed vargrant(Installed ...
3
votes
1answer
792 views
Why do we need ether in private quorum chain for transactions?
I have created a private quorum chain network. If there is a balance in the account address only then transactions are happening. Why do we need ether balance in quorum private chain or is there ...
1
vote
2answers
1k views
Quorum: Can't Connect To Nodes From External Sources
I have a Quorum (7nodes example) network up and successfully running. I can connect to any geth node using the following:
geth attach ipc:qdata/dd1/geth.ipc
I can also see that the ports opened in ...
3
votes
1answer
418 views
Error Installing web3js for Ethereum / Unable to connect to github.com
I'm using npm to install web3js:
npm install web3
It eventually fails. Here is the output I get...
npm WARN deprecated tar.gz@1.0.7: â ï¸ WARNING â ï¸ tar.gz module has been deprecated and your ...
2
votes
1answer
1k views
Quorum: Generating Public Key for a Given Address
I stood up the 7nodes example. There is a public key:
ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc=
provided for the privateFor field in order to change a contract value while keeping it private.
...
0
votes
1answer
70 views
solidity string variable compresion
I am try to compare a string variable in solidity code, mainly i have to check if the string is empty or not. How can it be achieved and also how much long/large of a string i can save in a string ...
1
vote
1answer
524 views
Account management in Ethereum or Quorum
We have two types of account in Ethereum one is EOA and other is a Contract account. While going through some code i found that u need to have a EOA account to create a new contract in ethereum.
var ...
1
vote
0answers
225 views
Does Quorum provide support for Windows?
I am new to Quorum.I want to build Quorum with windows.
But Windows isn't currently supported directly as stated in https://github.com/jpmorganchase/quorum/issues/178
Is there any alternate solution ...
4
votes
0answers
79 views
How to do a disaster recovery in private chains?
How can I do a disaster recovery on a private chain running ethereum, say for instance Quorum ?
0
votes
1answer
608 views
Quorum Account existence on node requirement of Private Transaction
I am trying out private transaction using Quorum.
Two quorum nodes N1 and N2 configured to participate in the private transaction.
I deployed a contract which is private for N1 and N2.
I issue ...
0
votes
1answer
209 views
get back to Ropsten: reclaim address after deletion of genesis block & /testnet/geth/chaindata
Recently I've been playing around with JPM's Quorum.
It's similar to go-ethereum (goethe) in many ways, but one of the key differentiating factors is that it has a genesis block which isn't the same ...
1
vote
2answers
405 views
specify and run *particular* version of geth (goethe) on my machine, with more than one source
At the moment I'm playing around with- or rather "conducting some experiments"- with JPM's quorum.
On my machine I have multiple versions of geth (i.e. goethe) installed.
I'm fairly confident that ...
0
votes
1answer
361 views
Quorum cakeshop - Error while starting up
I hava a question regarding Quorum cakeshop.
Currently I am trying to get the cakeshop running, what i want to use to play a around with Quorum a little. More infos below:
https://github.com/...
7
votes
1answer
870 views
Deploy contract in web3j quorum problem
I'm trying to deploy a smart contract (7 nodes sample from Quorum) using web3j.
It fails at get() to get the contract wrapper object. If I check the logs, a new transaction will show up, but if I call ...
1
vote
0answers
104 views
Setting balance to an account
After i created a wallet for a user i want to modify his balance, how could i do that without setting the account address' balance in the genesis, I'm using quorum blockchain with web3j.
Thank you!
1
vote
2answers
556 views
How does Quorum prevent double spending when states are encrypted?
My understanding of Quorum is that private contracts have encrypted states hence I am confused as to how they reach consensus and prevent double spending. If each state is encrypted how can the nodes ...
-1
votes
1answer
175 views
Log field in Transaction reciep
I want to set some data in the Log field in a transaction using Ethereum,
i used in smart contract event method but i got always empty logs could anyone help me please?
Thank you
3
votes
2answers
292 views
Smart contract listeners
I want to develop a method in a smart contract that act as a listener,
what i mean is when i use eth.sendTransaction(from:, to:@ of smart contract) it will be executed, without calling any smart ...
1
vote
1answer
636 views
problem when deploy smart contract in Quorum using web3j
I'm using web3J when i try to deploy contract i get
Error processing transaction request: Non-200 status code: &{Status:400 Bad Request StatusCode:400 Proto:HTTP/1.1 ProtoMajor:1 ProtoMinor:1 ...
1
vote
1answer
266 views
Hiding some transaction data
I want to add data in Quorum that are visible only to specific users,
how could i implement that ?
Thank you
4
votes
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?
asked Nov 24 '16 at 4:34
The Officious BokkyPooBah
36.7k10 gold badges107 silver badges179 bronze badges
