fixanoid
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Multichain vs Quorum
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I think best comparison would be between actual implementations vs concepts. But, essentially, a multichain implies that theres multiple databases/evms per communicating nodes (this depends on the ...

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Private Transactions (Privacy) in Quorum
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Answered @ https://github.com/jpmorganchase/quorum/issues/452 Pasting the answer: for 1 -- privateFor is required to create private state contracts that are only shared between participating parties. ...

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R3 Corda Integration/interoperability with Quorum -- other than JSON RPC
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Currently, you'd need a node that operates both and software to chat to both chains to achieve something like this. I'd imagine this would all be somewhat custom depending on the use cases you are ...

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What is the block number of the first block mined in a private blockchain network deployed on say Quorum?
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Azure MBS uses Quorum configured with IBFT consensus. In IBFT mode, Quorum will continuously advance the chain even if there are no pending txns, unlike Raft configuration. This is done to ensure that ...

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How to send a private transaction using Quorum
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Private txns in Quorum are designed to be executed over private contracts, we have many examples, but I'd recommend starting on this page to understand how its done: https://github.com/jpmorganchase/...

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Remix Browser and Quorum Local Node
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So as of Quorum v2.4.0, the underlying geth is still v1.8.x. That means you are a bit limited to the hardforks and EVM changes you may use when using remix and other solidity compilers. First, you ...

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Data storage and replication in a private blockchain
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This depends on the client you are using. Geth (most popular Ethereum client) stores everything in a local leveldb which is a file based database. Generally it will put it into ~/.ethereum unless you ...

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Quorum Maker for recovery of blockchain data in secondary node
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Quorum Maker is not a tool to set up your production and fault tolerance nodes with Quorum. Its a bit out of date now and forces you to use older version of client. My recommendation would be to ...

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Multiple nodes setup in Quorum Network
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Since Quorum is based on Ethereum, node recovery is very straight forward and would behave in a similar manner as regular Ethereum nodes. In Quorum, you need to make sure to back up all geth node keys ...

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Can we remove queued transaction in geth pool (PoA)?
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You can manually remove transactions by shutting down the node and deleting transactions.rlp in your geth folder. As for limiting transactions, like your previous comment mentions --txpool.lifetime ...

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gasLimit 5000 on private Ethereum geth node
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One way to do this is to set very high limit for gas in the genesis config file like so: "gasLimit": "0xE0000000". Alternatively, run a client optimized for private nets: https://github.com/...

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Consortium vs. Permissioned Blockchains
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They're not quiet the same thing but they are often related since consortiums prefer to ensure that their perimeter / border is not breached. Consortium typically refers to a group of corps or ...

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Setting methods permissions a quorum network
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If you are using Quorum, then before going to much further, please consider reviewing our new permissions model here: https://github.com/jpmorganchase/quorum/pull/715 once you switch tot he branch, ...

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How to do the Smart Contract Storage Migration using Quorum?
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Its not going to be possible to upgrade the contract, but copying the values should be trivial. The node creating new contract should read the current state via contract accessors (if those exist), ...

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Private transaction validation in quorum
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In Quorum, as of v2.2.4, private state txns are not validated by the block minters. In your scenario, unless there is a regulator / god node that sees all transactions, its going to be surprisingly ...

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which port I use when I want to connect remix to my local quorum network?
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Remix, like most of Ethereum wrappers access node via RPC API. To connect remix, you would tell it to connect on port 22101 as this is what you define to be your rpc port. The only other caveat is ...

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Quorum 7nodes example unable to finish simplestorage migration using privateFor
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Truffle version prior to 5.0.14 have some Quorum related bugs. Please upgrade to 5.0.14+ and try again.

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Quorum Can a non permissioned node change the states of private contract if the node knows contract addr and ABI?
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As of Quorum v2.2.3/Tessera 0.9 this is indeed possible condition and its one of the reasons why additional security/validation is needed at the smart contract level, for instance, validating that ...

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Quorum Tessera Private/Public Keys vs Quorum (Ethereum) Keystore - Difference and Keys Management
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No they cannot be as they are completely different types of keys and their use is defined by the context they live in.

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How can I trigger a quorum private smart contract deployment from my js client app?
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how are you? The post is a bit confusing as your question is somewhat unrelated to the rest of the contents of the post. I'll try to answer both, but please feel free to chime in so I can provide more ...

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How privacy can be ensured in smart-contracts?
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You can read how Quorum achieves privacy in the wiki on this page: https://github.com/jpmorganchase/quorum/wiki/Transaction-Processing. I'll explain how this works here but not as comprehensively as ...

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Quorum 7nodes example unable to attach to geth node 1,2,4,5,6,7 but node 3 is working
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This sounds like a memory issue, but you should look into the logs available in qdata/logs folder. Latest quorum-examples updates memory requirement to 6GB, tho the minimum is 4GB for all 7nodes to ...

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In Quorum, is it possible to replicate a private smart contract to a new node after the contract is deployed?
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Answered in https://github.com/jpmorganchase/quorum/issues/552 Quorum v2.1 currently does not support this -- a private contract shared on A and B cannot be extended to node C -- we have a solution ...

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Deploying ERC 725 (Blockchain Identity IDs) on Quorum?
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No reason why it wouldn't work with Quorum out of the box.

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How to allow cross origin in quorum?
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Quorum client is no different from geth, this page covers the options: https://github.com/ethereum/go-ethereum/wiki/Command-Line-Options

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Quroum - High gas consumption for ether transfer
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could you update your genesis config to the sample below and try again? "config": { "byzantiumBlock": 1, "chainId": 10, "eip150Block": 1, "eip155Block": 0, "eip150Hash": "...

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Better open source blockchain explorer for Quorum blockchain
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there are 2 that should work that support Quorum specifically: - Cakeshop: https://github.com/jpmorganchase/cakeshop/tree/quorum-ui - Quorum-maker: https://github.com/synechron-finlabs/quorum-maker/

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parity vs geth - language and enterprise variant/adoption
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Quorum was a fork of geth mainly because at the time of its creation it was the most popular client. If I remember correctly, Parity was not even announced yet.

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Quorum Data Migration
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There are no specific tools that I am aware of at the moment.

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Quorum Consensus - BAR (Byzantine Altruistic Rational) Fault Tolerance / BAR Fault Tolerance / BAR Model
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From my brief examination of the cited papers I can surmise that neither Raft implementation nor IBFT would fit BAR definitions.

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