Questions tagged [quorum]
Q&A related to Quorum, the permissioned Go implementation of Ethereum supporting data privacy.
237
questions
1
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2answers
135 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....
0
votes
1answer
20 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
67 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
17 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
33 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
23 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
28 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
49 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
40 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
73 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
47 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
60 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
22 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 ...
0
votes
0answers
13 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
67 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 ...
1
vote
1answer
155 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
51 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
54 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
45 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
44 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
109 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
30 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
44 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
54 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
95 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
42 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
37 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
158 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
415 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
37 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
47 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 ...
3
votes
1answer
135 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
113 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
1k 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
21 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
160 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
102 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
votes
0answers
54 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
vote
0answers
112 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
59 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
79 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
163 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
93 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
28 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
29 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
61 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
69 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
143 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
67 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 ...
