Questions tagged [quorum]
Q&A related to Quorum, the permissioned Go implementation of Ethereum supporting data privacy.
225
questions
0
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0answers
7 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
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0answers
53 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 ...
0
votes
1answer
56 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
36 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
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1answer
29 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
40 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
31 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
90 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
20 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
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1answer
40 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
51 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
35 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
29 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
28 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
80 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
145 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 ...
2
votes
1answer
31 views
Algorithm used for symmetric key encryption by quorum
What are the symmetric key encryption techniques used by the enclave in quorum to encrypt the payload? The documentation of quorum mentions that the enclave uses a symmetric key to encrypt the payload ...
0
votes
1answer
40 views
I can't execute transaction from Dapp: Nounce too low
I'am trying to use go-ethereum on my local network:
I have configured a 5-node quorum network on my local machine and I'am building Dapp.
I created smart contract and generated go bindings.
When I ...
2
votes
1answer
76 views
Mining a private transaction in quorum
I was going through the quorum docs and got stuck on how private transactions are mined? When two nodes, say Node A and Node B do a private transaction between themselves. Which node then mines the ...
0
votes
1answer
70 views
Private transaction validation in quorum
I was going through the quorum documentation and stumbled upon how private transactions are validated in quorum. Take the following example where there are four nodes - Node A, Node B, Node C and Node ...
0
votes
1answer
127 views
Incorrect Usage. flag provided but not defined: -emitcheckpoints
I'am trying to build this :
PRIVATE_CONFIG=ignore nohup geth --datadir ./Node1/new-
node-1 --nodiscover --verbosity 5 --networkid 31337 --
rpccorsdomain="*" --ws --wsorigins="*" --...
0
votes
0answers
19 views
Contract cannot create new Contract in Quorum
My main contract called SurveyFactory creates new Survey forms:
pragma solidity = 0.5.9;
import './Survey.sol';
contract SurveyFactory {
address[] public surveyList;
address public Owner;
...
1
vote
1answer
110 views
The EVM throws an error “invalid opcode 0x1c” [duplicate]
I have written a simple smart contract that allows to store a string, and I'am trying to use go-ethereum(which is similar to web3j).
When I execute a transaction, I have this error
VM returned ...
1
vote
1answer
59 views
How to get rid of inactive nodes in Geth
I am setting up a quorum network with Quorum-maker, which uses Geth.
It is running at the moment, with three alive nodes. However, earlier I had attempted to create two other nodes, which failed. I ...
0
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0answers
39 views
Metamask transactions keep stack at the txpool of a Quorum Private Network
System information
Geth version: 1.7.2-stable-0905eda4
OS & Version: Ubuntu 16.04
Branch, Commit Hash or Release: HEAD detached at v2.2.1
Actual behaviour and Steps to reproduce the behaviour
...
1
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0answers
97 views
web3.eth.sendSignedTransaction from address is different from Signer's address
I'm signing transactions using an HSM and when using Web3js to send the signed transaction, the from property on the receipt shows an address that's:
Different every time a sent signed transactions ...
0
votes
1answer
42 views
How many nodes do I need in a Quorum Private Blockchain?
I want to deploy a private blockchain using Quorum on Azure, create some ERC721 Tokens and send them various accounts inside the Private Blockchain.
How many nodes do I need for a Private Blockchain ...
0
votes
1answer
53 views
which port I use when I want to connect remix to my local quorum network?
I want to deploy a smart contract on my local network. I executed a local node via
PRIVATE_CONFIG=ignore nohup geth --datadir ./Node1/new-
node-1
--nodiscover --verbosity 5 --networkid ...
-1
votes
1answer
110 views
Error while deploying smart contract (quorum-examples tutorial by truffle)
:~workspace/myproject$truffle migrate --reset
Compiling your contracts...
Everything is up to date, there is nothing to compile.
Running migration: 1_initial_migration.js
Replacing Migrations...
...
2
votes
1answer
66 views
Why is zether needed in Quorum if transactions are private between nodes?
As you may know JPMorgan has released zether which allows to make anonymous transactions in Quorum using zkp technology.
But I have a question regarding why Quorum needs it.
Since transactions ...
1
vote
0answers
26 views
Can I run a javascript file using geth attach?
I want to automatize one thing. Aftert installing the Quorum nodes, I have to run:
docker exec -it quorum_node1_1 geth attach /qdata/dd/geth.ipc
Then I am pasting the JS code
But I want to ...
0
votes
0answers
26 views
how much structure variable does solidity support? [duplicate]
Error: "UnimplementedFeatureError: Variable inaccessible, too deep
inside stack"
code:
contract create{
struct s{
string s1;
string s2;
string s3;
string s4;
...
0
votes
1answer
58 views
Quorum 7nodes example unable to finish simplestorage migration using privateFor
I'm following this example: truffle quorum example I created a cluster using docker-compose and all the nodes are up and running but when I run the truffle migrate command the migration doesn't end ...
0
votes
1answer
58 views
Quorum how to decode result returned by eth_getQuorumPayload api?
I've read the post How to get decrypted transaction data in quorum?
I followed the api document and got the result by calling eth_getQuorumPayload
curl -H "Content-Type: application/json" -X POST ...
0
votes
1answer
112 views
Quorum Can a non permissioned node change the states of private contract if the node knows contract addr and ABI?
I have ran the quorum-example, deploying a private contract.
https://github.com/jpmorganchase/quorum-examples/tree/master/examples/7nodes
I followed the commands written in README.
However, I'm quite ...
0
votes
0answers
43 views
TC failures observed for Quorum-2.2.3
2 TCs are failing on Big endian system, seems the issue is with the byte ordering only.
1) ethereum/go-ethereum/core/bloombits
2) ethereum/go-ethereum/swarm/storage/feed
Can some one please comment ...
0
votes
1answer
62 views
Is it possible to modify privateFor addreses in a private Smart Contract (Quorum)?
I know how a private smart contract works providing a list of accepted addreses to privateFor property, but what if I want to disable (or enable) any address visibility?
Should I deploy a new Smart ...
1
vote
1answer
127 views
Quorum deploy with Web3j timeout
SCENARIO:
I have the following code:
final String hostUrl = this.deployerProperties.getProperty("quorum.host.url");
final String hostPort = this.deployerProperties.getProperty("quorum.host.port");
...
0
votes
1answer
52 views
How to show partial information on private transaction?
I want to achieve the following requirement in quorum blockchain.
1) Participant A sells a red asset to Participant B for 100 dollars.
2) Participant B paints the asset blue.
3) ...
0
votes
0answers
46 views
quorum-maker-no web UI is exposing on any host ports after creating nodes
Im trying to deploy contract using quorum-maker, I've followed every step as mentioned in wiki, but still not able to connect web UI and have no idea where Web app is deployed(in wiki. http://10.50.0....
1
vote
1answer
27 views
Can Qorum Blockchain supports partail transaction encryption?
My use case is that we need to protect sensitive data in the transaction in blockchain. But we want to open other data in the same transaction to the public, Can Quorum support the above mentioned ...
0
votes
1answer
117 views
deploying simple contract on quorum 7nodes example
I am trying to deploy contract with privateFor tag in migration and for set function same as shown in truffle quorum 7node example.
started nodes with these commands
./raft-init.sh
./raft-start.sh
...
1
vote
2answers
112 views
Invalid Sender when Using Quorum
I followed this tutorial (https://github.com/jpmorganchase/quorum/wiki/From-Scratch) to start up Quorum with 4 nodes using istanbul consensus. The nodes can connect and blocks are being generated but ...
1
vote
2answers
128 views
Quorum blockchain transactions visibility
I am wondering if the content (transaction) of the consortium blockchain or Quorum blockchain can be visible only for the validators.
In other words, the registered users (who can access the nodes) ...
1
vote
2answers
343 views
How to set up Quorum Blockchain?
I have read a lot about Quorum blockchain. My goal is to run and test it. I have found many articles. Could anyone suggest me good start-up articles for setting-up the Quorum on a number of nodes and ...
1
vote
1answer
186 views
Deploying Contract with Quorum Web3j response: Non-200 status code
SCENARIO:
I have the following code:
final String hostUrl = this.deployerProperties.getProperty("quorum.host.url");
final String hostPort = this.deployerProperties.getProperty("quorum.host.port");
...
0
votes
1answer
89 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 ...
0
votes
0answers
103 views
Issue calling one contract from another using Quorum
I'm using truffle and running locally with 4 quorum nodes, trying to call another contract's function, but keep getting 0 in return instead of the expected value the I get once calling the contract ...
2
votes
2answers
84 views
Are private variant of Ethereum or any other blockchain just a glorified distributed database?
Are private variant of Ethereum or any other private blockchain solution just a glorified distributed database?
Other than the fact that the data structure is cryptographically made immutable through ...
0
votes
1answer
293 views
Quorum Minimum Number of Nodes for Raft Consensus and Istanbul BFT
A Quorum Raft cluster of 3 nodes can tolerate a single node failure, while a Quorum cluster of 5 can tolerate 2 node failures. What is the equivalent if one uses Istanbul BFT?
Nathan Aw
