Questions tagged [quorum]

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

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How do I perform a hot migration of a Quorum node from one host to another?

I'm trying to perform a hot migration of an existing Quorum node on a RAFT cluster from one host to another. Is it possible to start a replicated quorum node with the same Tessera key pair as an ...
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436 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 ...
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ERC721 token transfer across private contracts

Using a token based model I have multiple privacy groups and using Quorum P1 - Participants A and B ( Private Contract ) P2 - Participants B and C ( Private Contract ) P3 - Participants C and D ( ...
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1answer
261 views

Securing Quorum Geth Node

I have a dapp node which uses web3js to send transactions to quorum geth node. The html pages shows the http provider and the ports. In theory anyone can use these ip and public address in the html to ...
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695 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 ...
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1answer
162 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 ...
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166 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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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 ...
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298 views

Unable to interact with DApp deployed on quorum

I am unable to interact with contract using Dapp deployed on Quorum blockchain (using metamask). I am following "https://truffleframework.com/tutorials/building-dapps-for-quorum-private-enterprise-...
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Quorum private transactions - Inconsistent state

We are using Quorum and sending private transactions Participant A - Sending 3000 Private transactions to ( Participant B and Participant c) However, all 3000 transactions are committed successfully ...
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1answer
300 views

Quroum - High gas consumption for ether transfer

I am running a local 3-node Quorum cluster with Raft consensus. The network is setup using quorum-maker. All the settings are default except that I have added a custom account in the script so that it ...
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195 views

Why does the transaction stay in queue from more than 240 second

I am running quorum nodes via the Quorum-maker script, and when trying to call functions from my already deployed smart contract, I get this error : Transaction ...
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366 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 ...
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268 views

How does Quorum or any private ethereum deal with failing/unavailable nodes, Single Point of Failure (SPOF) and Settlement/Transaction finality?

How does Quorum or private ethereum deal with failing/unavailable nodes, Single Point of Failure (SPOF) and Settlement/Transaction finality? It seems to me that only ethereum main net is truly ...
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558 views

I downloaded and built quorum from the official git repo but I dont see the QOURUM OPTIONS

git clone -b geth1.6 --single-branch https://github.com/jpmorganchase/quorum.git NAME: geth - the go-ethereum command line interface Copyright 2013-2017 The go-ethereum Authors USAGE: geth [...
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171 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. ...
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113 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 ...
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1answer
496 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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363 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/...
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Cannot acces Quorum IBFT remote node

I managed to setup Quorum IBFT nodes on my MacOS. So far it works - deploying smart contracts, submitting transactions and etc using Metamask using RPC URL localhost:22000- as expected on the local ...
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How to make geth node as a service?

I managed to setup Ethereum private network (using clique, Quorum's RAFT and IBFT) and managed to connect them to my own DApp via metamask. Now I am wondering, how to make the network that I just ...
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1answer
749 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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615 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 ...
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193 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? ...
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203 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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877 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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Quorum nodes run fine with docker-compose, but crash when deployed on kubernetes

Following the steps outlined here, I created a basic Quorum network with 4 nodes and IBFT consensus. I then created a docker image for each of the nodes, copying the contents of each node's directory ...
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21 views

Can a Quorum network be cloned?

I wanted to know if a Private Protected Network be cloned/replicated to have a backup of the network, which would be helpful in times of network failure.
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462 views

Getting Fatal: Error starting protocol stack: Genesis not found in chain

I am getting the following error in one of the nodes, I have a quorum network running. Fatal: Error starting protocol stack: Genesis not found in chain DEBUG[02-19|08:37:08] FS scan times ...
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419 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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Recover msg.sender in externally signed private transaction in Quorum

When I send an externally signed private transaction (contract bytecode) using the sendRawRequest API of quorum-js, the from field, or the msg.sender field at the solidity contract comes out as a ...
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2answers
46 views

Quorum nodes with different permissioned-nodes.json files

Is it possible for different Quorum nodes to have different permissioned-nodes.json files? suppose we have a 3 node network with node1, node2, and node3. Then can node1 include node3 in its ...
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46 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 ...
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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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24 views

ERC20 token transfer is not showing in receiver's balance

I have created 3 node (A, B, C) network in that I have deployed simple ERC20 token smart contract on node A. function balanceOf(address tokenOwner) public view returns (uint256) { return balances[...
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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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102 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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101 views

Quorum Data Migration

In the forseeable future, there will be a need to migrate data on the Quorum blockchain to another system. Are there migration tools/ETL tools that can take data on blockchain nodes and process it ...
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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 ...
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1answer
45 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 ...
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126 views

Quorum Consensus - BAR (Byzantine Altruistic Rational) Fault Tolerance / BAR Fault Tolerance / BAR Model

I refer to http://www.cs.utexas.edu/~dahlin/projects/bft/ http://www.cs.cornell.edu/lorenzo/papers/sosp05.pdf http://www.cs.northwestern.edu/~fabianb/classes/cs-443-w07/BAR.pdf https://blog.ethereum....
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23 views

Is the value of the privateFor param accesible in the contract?

Transaction params for quorum can contain a privateFor param { "jsonrpc":"2.0", "method":"eth_sendTransaction", "params":[ { ...
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81 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 ...
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101 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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405 views

Quorum transaction not mined and no address

I am running a private Quorum chain consisting of 3 nodes with raft consensus. When I deploy a contract to the chain via web3 I get returned a hash and can then look up the transaction with the local ...
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1answer
60 views

Deploy from Remix to Quorum using password? “authentication needed: password or unlock”

I can SSH into the box that is running Quorum: run geth with the flag --allow-insecure-unlock geth attach new-node-1/geth.ipc personal.unlockAccount(eth.accounts[0]) I'm interested in knowing if I ...
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1answer
1k 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 ...
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2k views

MetaMask - Quorum - Network - Custom RPC - Could not fetch chain ID. Is your RPC URL correct?

Instructions from scratch https://docs.goquorum.consensys.net/en/latest/Tutorials/Creating-A-Network-From-Scratch/ genesis.json Directly from the tutorial: "chainId": 10, startnode1.sh #!/...
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3answers
170 views

Error in the truffle init command, quorum

i'm trying to truffle a project but each time it shows me this message, whereas, i'm sure i installed the truffle successfully. vagrant@ubuntu-xenial:~/quorum-examples$ cd project vagrant@ubuntu-...
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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 ...

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