Questions tagged [quorum]
Q&A related to Quorum, the permissioned Go implementation of Ethereum supporting data privacy.
254
questions
2
votes
2answers
36 views
What is the difference between IBFT(Istanbul BFT) and PBFT?
I recently got to know about IBFT and Quorum and started studying on their consensus protocols. And what is the difference on IBFT and PBFT? Are they pretty much like the same and, when considering ...
1
vote
1answer
27 views
Attach to tessera node failing
Im installed quorum with tessera but when i need to attach to any node using command $ ./attach.sh 1 show error "Fatal: Unable to attach to remote geth: dial unix qdata/dd1/geth.ipc: connect: no ...
1
vote
0answers
30 views
Using privateFor in truffle test
Using truffle , I am able to deploy private smart contracts using privateFor clause. However, I am not able to use in truffle test. I get the following error. Is there a way we can use privateFor ?
...
0
votes
0answers
36 views
Quorum problem to find external node
I have tried several configurations without success. I am trying to connect two nodes there are in different network. Both are in a VM at google cloud, as you can see in the image below, one of them ...
0
votes
0answers
23 views
How to schedule a transaction to a Contract? [duplicate]
I have a simple getter-setter contract. I want to schedule transactions for a method of my contract on a particular date and time.
Do we have a function to schedule transactions to a contract in ...
0
votes
1answer
20 views
Are the events raised in a private transaction in quorum also private?
I'm trying to understand the specifics of privacy in quorum transactions, specially regarding the events.
Are the events raised in a private transaction in quorum also private? I can't find any ...
0
votes
1answer
53 views
Front-running in Quorum IBFT
Are pending transactions processed sequentially in IBFT?
In a networks based on PoW you would usually pay higher gas price in order to get your transaction mined first. Is there a way to manipulate ...
0
votes
0answers
31 views
Uport for Quorum-based Dapp
I'm developing a donation platform based on the blockchain. I need to identify the beneficiary that can be an institution, an association, a hospital, a retirement home, a person, etc.
I study the ...
0
votes
0answers
26 views
In Azure Blockchain Service, why are blocks mined by 0x0000000000000000000000000000000000000000? None of the members in consortium has this account
Who mines the blocks in Quorum network?
0
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0answers
38 views
Chainlink services are not supporting the privateFor transactions in Quorum/Kaleido
We are exploring Kaleido and Chainlink for one of our use cases.
What we have done:
We have created a network of Quorum/Raft nodes.
We had setup the chainlink service for the network. We have setup ...
0
votes
0answers
35 views
Pending transactions at the client machine, but minter is not minting a new block since there are no pending transactions
I am running Blockbench on Quorom Raft using smallbank workload: 4 minters and 4 clients. Following the logs, I found that sometimes 1 specific client (Client 4) has pending transactions but the ...
1
vote
1answer
38 views
What is the block number of the first block mined in a private blockchain network deployed on say Quorum?
I am working on POCs on Azure Blockchain Service. While working on quickstarts, I observed that while deploying my 'Hello Blockchain!' smart contract, the block number of the block mined was 34136. ...
1
vote
1answer
46 views
How to execute a private transaction in quorum
I am currently learning quorum. I was able to build two node environment by referring to "Creating a network from scratch" in the following quorum official link, and successed to attach node1 using ...
0
votes
1answer
74 views
Can an Erc-20 token that I create on my Quorum be integrated with any cryptocurrency exchange (for example Coinbase)?
I have setup my own quorum blockchain network. If I deploy an ERC20 token contract with a coin name (say ABC), will I be able to list the coin in exchanges ?
0
votes
1answer
36 views
Private transaction failing with Non-200 status code
I have a Quorum network running on Azure Blockchain service.
Sending private messages to a particular public key is failing. It was working till last week. No code or configuration changes have been ...
2
votes
2answers
106 views
Web3js events “fromBlock: 0” doesnt work
I want to get events from block X.
I have:
quorum-v2.4.0
web3js 1.2.6
And I have my own smart contracts I want to listen for. So I have created listener for allEvents like this:
const event = ...
0
votes
2answers
60 views
Unable to deploy contract on Private Quorum Network
We just built a new 3 node quorum network but we are unable to deploy any contract on it. Please find the below info:
Quorum vesrsion:
Geth
Version: 1.8.18-stable
Git Commit: ...
1
vote
1answer
24 views
What is the max number of Blocks which can be created in Quorum
I have nodes running from past few days, with almost 4100+ transactions successfully completed. When i try to interact with the contracts again to add/modify details it shows error
Error when ...
0
votes
2answers
170 views
Quorum private transactions not private
I am struggling to enforce privacy using Quorum's privateFor option.
I have provisioned a consortium in Azure blockchian service with 3 nodes. I deploy a smart contract from node2 privateFor node1 ...
0
votes
1answer
81 views
How to send a private transaction using Quorum
I'm trying to send a private transaction using Quorum geth, but eventually got an error :
Error: ether value is not supported for private transactions
at web3.js:3143:20
at web3.js:6347:15
...
0
votes
0answers
24 views
Security implications on limiting the round change timeout of Istanbul BFT consensus algorithm?
I have a security-related question regarding the exponentially increasing timeout in the round change, which is used in the Istanbul Byzantine fault-tolerance consensus algorithm used by Quorum.
...
3
votes
2answers
254 views
How is authorization handled in smart contracts
I have deployed a Quorum network on Azure Block chain service to be used by specific invited members of a consortium. I have not yet explored the privacy features provided by Quorum on top of Ethereum....
1
vote
1answer
34 views
Fire transaction from contract
I have a contract holding a mapping like this: mapping (address => User) users. How can I get the contract to automatically fire a transaction/event when a certain condition is met? For example, ...
3
votes
1answer
98 views
Contract does not exist at address
I have setup a private Quorum network and successfully deployed contracts and executed contract functions using Visual Studio Code and remix.
When i try to deploy the exact same contract manually ...
0
votes
0answers
38 views
In 4 node Quorum setup, nodes 1-2 start but 3-4 give this error
I am running custom setup 4 node Quorum raft cluster, nodes 1 and 2 startup but 3 and 4 fail. what is the problem here?
my startup script:
ARGS="--nodiscover --verbosity 5 --networkid 1337 --raft --...
1
vote
0answers
74 views
Quorum Smart Contract Performance Azure Blockchain Serivce
I wonder that how I can improve smart contract performance in Quorum.
Right now I have a smart contract which save supply chain information and we are using Azure Blockchain Service for Quorum. We ...
1
vote
1answer
96 views
Remix Browser and Quorum Local Node
When i try to deploy any contract using quorum local node in remix browser with solidity version higher than 0.5.0, the contract gets deployed but any transaction to interact (fetch / update) the ...
2
votes
0answers
30 views
Solidity Contract Length [duplicate]
What is the max length of solidity contract?
I have been trying to deploy a contract of 328 lines of code on Remix Browser with a locally created Quorum Private Permissioned Node.
I get the ...
1
vote
1answer
109 views
gas required exceeds allowance or always failing transaction in local permissioned Node
I am facing the some issue with gas but i do not have any modifiers in my contract. Even a simple setter-getter contract shows the following Error
Error: gas required exceeds allowance or always ...
0
votes
1answer
84 views
Quorum Maker for recovery of blockchain data in secondary node
We are trying to setup multiple nodes in QUorum maker to make one node as a backup to be used in case the primary node fails for some reason. We are able to deploy our smart contract successfully but ...
0
votes
1answer
137 views
Multiple nodes setup in Quorum Network
Is there any documentation to state how can we have redundant nodes configured in Quorum network so that even if a single node goes down, the data in blockchain is still retrievable by the app?
...
0
votes
0answers
116 views
Not able to connect Tessera with Quorum node
I am following up with the Quorum set up as mentioned @ https://docs.goquorum.com/en/latest/Getting%20Started/Creating-A-Network-From-Scratch/#tessera
I have created 3 Quorum nodes with RAFT ...
1
vote
1answer
130 views
Defined GasLimit in genesis file and in web3j gasprovider
Im having issues when I try to implement a back end that generate smart-contract transaction calls using web3j. But I'm a lit confused with the gas limit concept. I have defined inside the genesis ...
0
votes
1answer
31 views
Not possible to connect to the Web3 provider
I have a problem connecting my url to my quorum node.
I already make sure the node has an account, I run it without problem but I have that error
enter image description here
enter image ...
1
vote
1answer
25 views
Quorum-maker-node not starting
I have created a node in quorum-maker using my ip address but that node is not starting.If i create a node using local ip(127.0.0.1), node starts.why?
0
votes
0answers
98 views
Quorum - Actual blocknumber and eth.blockNumber mismatch
I have a 3-node quorum setup that has been running from Jan 2019. The nodes were working without a problem until Sept 18 2019 when the network started to throw errors on submitting transactions with ...
2
votes
1answer
267 views
Differences between Quorum and Pantheon
I want to build an app on a private blockchain and I'm hesitating between 2 clients : Quorum and Pantheon (now Hyperledger Besu)
Does anyone know what are the main differences between the 2 and the ...
0
votes
2answers
89 views
Quorum Development [closed]
i am looking for in depth development reference for JPM Quorum blockchain, i am not able to find anything other than the basics. If anyone has any good resources please share them with me.
to be more ...
0
votes
1answer
112 views
Setting methods permissions a quorum network
I have 3 solidity smart contracts that run in a quorum network with 7 nodes.
At the moment i use the constructor to set the owner of the smart contract, that is the node that deployed it.
...
0
votes
1answer
57 views
Smart contract copy
So I am in a permissioned blockchain setup, using Quorum as a client.
I have deployed a private smart contract to members A and B, and now I have the need to redeploy it, giving access to member C.
...
0
votes
1answer
58 views
Quorum - Ethereum interaction [closed]
how to connect the quorum blockchain with the ethereum network using the bridge services.Can anyone clarify me about the bridge concept and how to implement it in quorum ethereum connection?
0
votes
1answer
173 views
Empty array is being returned
Am trying to add few hashes into an array and retrieve those but the getHash() is returning an empty array. My smart contract is :
pragma solidity ^0.5.0;
contract simpleexample{
bytes32 public ...
0
votes
1answer
50 views
Is a Raspberry Pi 2 a suitable piece of hardware to run a Quorum Node with Tessera? If so has it been done?
I would like to set up some Quorum nodes (5) for test purposes and thus far have been unsuccessful in getting a node to run on a Pi 2. The work has stopped due to the need to recompile the binaries ...
0
votes
1answer
67 views
getPastEvents cannot handle multiple requests?
When I send about 100-120 requests in async, it is fine, the event will give me a response. But above 150 or so, I get "Invalid JSON RPC response: ""
Web3JS 1.2.1
Geth Info:
Version: 1.8.12-stable
...
0
votes
1answer
87 views
Quorum Nodes not syncing
I have 5 nodes with quite different block numbers( one is stuck at 201504, another at 280432 and so on) , they don't seem to be syncing. No particular error in Quorum Logs as well. Any transaction ...
2
votes
1answer
224 views
Good source for TPS and transaction latency / finality for private Ethereum blockchains
I am looking for a good source / sources to compare TPS and transaction latency (How long it takes to send a transaction until it is mined) for different private blockchain solutions. Especially I am ...
1
vote
1answer
66 views
Token transfer from private network to public
I want to transfer my token from private network(quorum) to public network(ethereum), so I have burned the equal amount of tokens in quorum network and minted same amount of tokens in ethereum network....
1
vote
1answer
49 views
How to do the Smart Contract Storage Migration using Quorum?
I wrote one smart contract without upgradable logic, now I want to update the same smart contract with some changes. Is it possible to copy the data from old contract storage to a new one?
1
vote
1answer
236 views
About key and address difference between Quorum and Ethereum blockchain
Quorum is a fork of Ethereum, what are the main difference of them about private key/public key/address generation and representation format?
In the link Quorum wiki, there is a public key like below:
...
0
votes
1answer
750 views
read error unexpected EOF
I'm working a evidence application with quorum.I want to store the entire contents of a file on my private blockchain. Although it's not recommended. At first I use a linux command 'split' cut a big ...
