Questions tagged [quorum]

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

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1answer
311 views

Connect Quorum nodes to Ethereum

At Quorum network, we can submit public transactions within Quorum nodes. Are we able to connect Quorum nodes to Ethereum and allow those public transactions go to public?
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242 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 ...
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1answer
88 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 ...
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55 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 ...
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1answer
96 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 ...
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1answer
293 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 ...
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1answer
70 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....
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1answer
58 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?
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1answer
317 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: ...
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1answer
81 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 ...
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1answer
85 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 ...
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1answer
251 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 ...
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1answer
70 views

solidity string variable compresion

I am try to compare a string variable in solidity code, mainly i have to check if the string is empty or not. How can it be achieved and also how much long/large of a string i can save in a string ...
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245 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 ...
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1answer
55 views

In a precise sense, Is Quorum considered more of a blockchain or a Distributed Ledger?

In a precise manner, Is Quorum considered more of a blockchain or a Distributed Ledger?
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1answer
3k 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="*" --...
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0answers
35 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; ...
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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 ...
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3answers
136 views

Other than Quorum, what are some other Enterprise Ethereum-based platform available?

Other than Quorum, what are some other Enterprise Ethereum-based platform available out there?
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1answer
255 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 ...
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1answer
133 views

R3 Corda Integration/interoperability with Quorum — other than JSON RPC

Am looking to integrate/interoperate Quorum with R3 Corda in a way that achieves atomicity e.g. 2 phase commit. Understand that interledger focuses on interoperability and that could be a possibility....
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1answer
230 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 ...
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0answers
149 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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1answer
177 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 ...
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1answer
107 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 ...
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1answer
258 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... ...
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1answer
134 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 ...
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0answers
46 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 ...
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1answer
194 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 ...
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1answer
507 views

How to configure extraData field in genesis file

I am in the process of setting up a private, permissioned Quorum blockchain with Istanbul consensus for simple use cases. When I specify the number of validators when generating the genesis file it ...
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1answer
155 views

External Access To A Private Ethereum Blockchain

Background Info I have been playing around with Ethereum and I have created a DAPP on the Ethereum blockchain inside Azure Kubernetes. Everything up to this point has been a good experience but the ...
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2answers
800 views

truffle-contract error: Number can only safely store up to 53 bits

I am using truffle-contract with a local quorum node and try to execute a smart contract method, but getting this error: Error: Number can only safely store up to 53 bits That's the way I do it: ...
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1answer
119 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 ...
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45 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 ...
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1answer
269 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"); ...
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1answer
75 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) ...
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2answers
1k views

Better open source blockchain explorer for Quorum blockchain

I was looking for open source blockchain explorers for Quorum blockchain other than https://github.com/blk-io/blk-explorer-free, Thanks
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1answer
31 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 ...
2
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1answer
1k views

Quorum, where to start?

I am relatively new to Ethereum, and i want to know exactly how to migrate to quorum. And by that i mean migrate exisiting contracts. I also want to know about the how to start with quorum and if ...
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1answer
236 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 ...
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2answers
716 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 ...
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2answers
172 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) ...
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5answers
407 views

Quorum - Unable to read state of one public contract from another

I'm running the 7nodes example of quorum from truffle and the example functionalities work as expected. However, when I create a public contract to access the state of another public contract, I'm ...
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2answers
861 views

Quorum - oversized data during contract creation - contract code size limit

While creating contract, I am getting the error "oversized data" during contract creation. Other than modifying the go-ethereum code file to increase the maxCodeSize, or splitting the contracts up, ...
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1answer
323 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"); ...
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1answer
206 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 ...
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2answers
106 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 ...
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0answers
151 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 ...
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2answers
119 views

Passing data between two Ethereum networks

I have some IoT(Internet of things) nodes sharing the received data from sensors with each others. I partitioned them to 2 permissioned networks: Network 1 includes: X,Y,Z nodes trusting each other,...
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1answer
83 views

Quorum - Implement Hybrid Casper FFG / Proof of Stake?

After Ethereum rolls out Hybrid Casper FFG / Proof of Stake in the Serenity release, will Quorum follow suit to incorporate Hybrid Casper FFG / Proof of Stake as another consensus algorithm? (on top ...