Questions tagged [quorum]

Q&A related to Quorum, the permissioned Go implementation of Ethereum supporting data privacy.

92 questions with no upvoted or accepted answers
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178 views

Quorum: Extending list of participants that can access private transactions post transaction creation?

According to the Quorum roadmap (which is over a year old now) the team at JPM was planning to add a feature whereby additional parties could be given rights to view private transactions after those ...
7
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1answer
867 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 ...
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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 ?
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0answers
136 views

Quorum :- metamask do not support privateFor feature of quorum

i got to know that metamask do not support privateFor because of which private transaction for quorum dapp was not behaving as expected. so, I can't use metamask for my quorum DApp to switch port and ...
3
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0answers
169 views

Quorum failure - Failed to decode message from payload

We use in our project -JP Morgan Quorum (Ethereum based) bloackchain - with istanbul voting mode. We have 4 nodes (3 of them are validators - hard coded, nonchangable) And from time to time (...
2
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0answers
344 views

Transaction not mined error when deploying to quorum maker server

I get the following error when attempting to deploy my zeppelin erc20 token to a quorum server(used quorum maker). (master) $ node migrations/2_proj.js ``````` transactionHash ...
2
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2answers
665 views

How can I trigger a quorum private smart contract deployment from my js client app?

My question follows directly this answer to a similar question. I need for my client app users to be able to trigger private contract deployment. I've tried using privateFor with both the web3 and ...
2
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0answers
51 views

Decentralized x509 standard ERC

I am looking at coming up with a ERC standard to define X509 standards. Understand there is ERC725, ERC 735. Wanted to know if there are any existing ERC standards for this?
2
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1answer
62 views

Save temporarily-shareable private data using Quorum

Can we use Quorum (or any other Ethererum variation) to save private data that can be shared with other parties for a temp period? The use case is that: A patient can share his medical data that is ...
2
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1answer
156 views

Deploying ERC 725 (Blockchain Identity IDs) on Quorum?

I refer to ERC 725 -- Blockchain for Identity. From a smart contract code angle, it looks to be just another smart contract that I deploy onto the blockchain. Am wondering if Quorum can be used to ...
2
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0answers
70 views

Private Go Ethereum client (geth) in Red Hat Linux for all nodes consistently High CPU usage > 38.5% to 70% with no transactions

I run multiple quorum nodes i.e. Go Ethereum client (geth) in Red Hat Linux. all nodes consistently report High CPU usage > 38.5% to 70% for geth process despite no transactions are submitted to Geth. ...
2
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2answers
416 views

Updating Smart Contract in Quorum with no change to the smart contract address

Understand that a smart contract address is deterministically computed from the address of its creator and how many transactions the creator has sent and thus every new smart contract deployment will ...
2
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0answers
227 views

Quorum Geth Folder (chaindata, lightchaindata, nodes, LOCK, transactions.rlp), Quorum Raft State (ldb, log, CURRENT, LOCK, LOG, MANIFEST)

There are many folders and files generated when I created my Quorum nodes. Quorum geth folder: chaindata lightchaindata nodes LOCK nodekey transactions.rlp Quorum Raft State: 000002.ldb 000003....
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0answers
183 views

Integration between Multiple Enterprise Blockchains (Hyperledger, Quorum, Corda) — Through the use of Ethereum oracles?

Many organisations are running proof of concepts with different enterprise blockchain technologies -- Quorum, Corda and Hyperledger. Understand that most efficiency gains can be unlocked only when ...
2
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0answers
117 views

BI Dashboard (Tableau, Qlikview esque) for Ethereum/Quorum?

Most of the ethereum transaction explorers (etherscan) I have encountered does not have snazzy analytics capabilities. For enterprise, there is a need to analyse (sum, count, etc) the data in the ...
2
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0answers
60 views

Get Contracts Deployed Count on Quorum Blockchain?

I have lost count of the number of smart contracts deployed on my quorum blockchain. What are some negative impact/implications of forsaken smart contracts on a private blockchain such as Quorum? ...
2
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0answers
156 views

Can not access quorum's contract from webpage *CORS*

I am getting following error on browser's console while accessing contracts. Failed to load http://localhost:22000/: Response to preflight request doesn't pass access control check: No 'Access-...
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0answers
34 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 ? ...
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0answers
83 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
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1answer
112 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 ...
1
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1answer
26 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?
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0answers
145 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 ...
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0answers
44 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 ...
1
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1answer
99 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....
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2answers
189 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 ...
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0answers
108 views

What are the Minimum Requirements for a Quroum node?

I am planning to run a Quorum (Ethereum fork) blockchain on my business. I was wondering if quorum node will run on a Raspberry Pi 3 Model B+. Raspberri Specs: Broadcom BCM2837B0, Cortex-A53 (ARMv8)...
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0answers
50 views

`etherlime deploy` fails with Error: invalid sender

I am trying to deploy a contract with etherlime to a private permissioned Quorum network: etherlime init --> OK etherlime compile --> OK etherlime deploy --> Error Error: Compilation ...
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0answers
167 views

How can I measure a function execution time based on Truffle?

I'm using truffle to test my smart contract written in solidity language deployed on the Quorum blockchain. I want to measure the execution time of the invocation of a function using truffle. Is ...
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0answers
67 views

Opening Smart Contracts on Quorum via json rpc api eth_sendtransaction for Integration Purposes

if I wish to integrate quorum blockchain with other platforms via the json rpc api eth_sendtransaction method, what other implications can there be? Assuming the smart contract built is secured and ...
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2answers
407 views

Quorum 7nodes example unable to attach to geth node 1,2,4,5,6,7 but node 3 is working

Quorum 7nodes example all of sudden gave fatal error unable to attach to remote geth. Problem: can't attach to geth node Every time I import metamask account to geth node (using personal.importRawKey(...
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0answers
93 views

Quorum 7node example when i try to import account1 of node1 using its key1 ciphertext i get wrong account address imported

I am trying to import account 1 of node1 of 7nodes quorum example using its key1 file which you can find here "https://github.com/jpmorganchase/quorum-examples/tree/master/examples/7nodes/keys". my ...
1
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1answer
100 views

Quorum Constellation TLS Trust Mode revoking a certificate

I have multiple quorum nodes setup. How does revoke a certificate for a node? Assuming the node has gone rogue, there is a need to revoke a certificate for the node
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1answer
163 views

Quorum and Swarm Integration

After building from Quorum source, I can see Swarm as on the binaries. How can one get Swarm to work alongside Quorum?
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1answer
323 views

solidity sorting array - LIFO / FIFO

I am adding to an bytes32[] array via push(). When I traverse the array with for (uint i = 0; i < array.length; i++), This is First in First Out (FIFO) sequence right? How can one perform a ...
1
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1answer
495 views

Set up Custom nodes in Quorum

I have gone through the https://github.com/jpmorganchase/quorum-examples and it works good and fine. Now I want to make my own custom node Quorum Network what is the best method, tool or any guide ...
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0answers
584 views

ECDSA Transaction Signature Values (V-R-S) — Interpreting and presenting it to layman users

In Quorum + Web3, I used getTransaction and it returned me the necessary details and also V-R-S. Understand that VRS is part of the ECDSA signature. There is a need to interpret and present these ...
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0answers
403 views

JSON RPC Load Testing / Stress Testing Tool

I am trying to test my quorum setup by load testing it. Are there any JSON RPC Load Testing / Stress Testing Tools? Does Postman or SOAP UI supports JSON/RPC calls?
1
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1answer
740 views

Node unable to connect to the constellation node (quorum)

Looking at the 7Node example from: https://github.com/jpmorganchase/quorum-examples/tree/master/examples/7nodes and trying to configure my network but have ran into a lot of trouble over the days, ...
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0answers
224 views

How to add Peers in Quorum Single Member Blockchain Network in Azure?

I'm using the QSMBN(Quorum Single Member Blockchain Network) provided by Azure, and I'm trying to connect one external node to the quorum network, but when I try to add peer displays this message "...
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0answers
230 views

Quorum + Web3js web3.isConnected() returning false

I am running on quorum and using web3.js. When I run web3.isConnected(), it is returning "false" var web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:22000")); alert(web3....
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2answers
588 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 ...
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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 ...
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0answers
102 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
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1answer
635 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 ...
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0answers
11 views

Quorum: Sending Private Transaction With Python

I am trying to experiment with GoQuorum and Python. I have read the documentation about how privateTransactions work and I am trying to perform one. Since Python's web3py does not support the ...
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0answers
12 views

quorum-wizard Quickstart option is failing

quorum-wizard Quickstart option is failing with error. Downloading dependencies... Using cached quorum at: /Users/vivart/.quorum-wizard/bin/quorum/20.10.0/geth Using cached tessera at: /Users/vivart/....
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0answers
16 views

How to send a transaction to Besu configured as a Free Gas Network

I have downloaded and configured Besu as a Free Gas Network (https://besu.hyperledger.org/en/stable/HowTo/Configure/FreeGas/ ). Creating transaction using Truffle works fine, but not in my application ...
0
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0answers
48 views

Error in doing private transactions for nodes on different VMs using quorum and tessera

I am pretty new to quorum/tessera. I have successfully tested a small POC with 3 quorum+tessera nodes on the same machine. Now, I am trying to do a similar POC with 4 nodes on different VMs. The nodes ...
0
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1answer
35 views

Access private transactions(payload or state) on a smart contract using tessera

I am pretty new to quorum/tessera and am trying to set up a small POC with 3 nodes. I followed the 7nodes setup example and similarly deployed 3 nodes on my system using Mysql as the database for ...
0
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1answer
24 views

Uncaught (in promise) Error: Returned error: oversized data when calling the set method for a very large cipher string

I am using a quorum 7 nodes example with IBFT genesis file. I have modified the maxCodeSizeConfig to 128KB (which is maximum). I have also increased the gas limit to 0x3B9AC9FFFFFF. But, when I am ...