Ethereum Stack Exchange
Ethereum Stack Exchange

Questions tagged [private-blockchain]

Private blockchains are not available for the public and are maintained/secured by a cluster of trusted nodes. These kind of blockchains are useful when dealing with sensitive information.

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How to create a secure, production ready private chain?

I'm looking for more information or resources on how to run a private chain with ethereum with multiple nodes that would work in production and would only be accessible to my users/network. I know all about the dev private network but as stated it's…
jayD
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Private blockchain for production?

Even though it might be a bit soon for use in production, but all I find about setting up a private blockchain seems to be for testing. But the fact we have a genesis.json should mean that anyone has the freedom to make their own ethereum…
Cubedj
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Custom list of client/node for private chain - Consortium blockchains

I've been reading on making a custom private chains here , here , here,here and here . It's pretty clear how to create a custom chain and having remote client connect to the node with this : geth attach # connect over IPC on…
jayD
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Cannot create a second account on my private chain from the Ethereum Wallet

Just playing around with Ethereum. I create my very first private-chain on a Windows machine.. First I'm starting up the node/miner: D:\ethereum\gethlatest>geth --dev --rpc --rpcport 8002 --datadir D:\ethereum\gethlatest\privatechain --ipcpath …
Boestin
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How is a private blockchain secure from a 51% attack?

How does a private blockchain such as VaultOS protect from a 51% attack? Is it somehow piggybacking on the public blockchain, or (I assume) are they running separate servers they control? It seems if they are running their own hardware, that it is…
mowliv
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Can't establish the connection with bootnode and two nodes

I have problem with starting my private network. Two nodes on different PC and with external IP addresses, starts with next parameters: --verbosity 3 --identity "TestNet" --rpc --rpcport "8081" --rpccorsdomain "*" --datadir "%datadir%" --port 25565…
segar
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Private Blockchain

Suppose I create my own private blockchain using Ethereum over the public network means my node is reachable from the internet, now I don't want to share my genesis.json but still want that other can connect with my node to participate in the…
Siddharth
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Error: invalid merkle root | Error in XDPoS Consensus | fork of go-ethereum

Block Synchronisation failed in code :- https://github.com/XinFinOrg/XDPoS-TestNet-Apothem ERROR[03-23|19:47:12] #### BAD BLOCK Chain config: {ChainID: 1151 Homestead: 1 DAO: DAOSupport: false EIP150: 2 EIP155: 3 EIP158: 3 Byzantium: 4…
Anil Chinchawale
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Why are geth testnet nodes not communicating

I'm on Windows 10 pro. Using a reasonable genesis block, I have set up 3 geth instances (01,02, 03) on the same laptop called as follows: geth ^ --identity "XxxxxTest01" ^ --genesis C:\WORK\Ethereum\Geth\XxxxxTest_Genesis.json ^ --datadir…
Alex K
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Do I need blockchain to connect local database's?

Hello all and Happy New Year! My small business and my client use the same vendor application where the vendor application is locally installed at each location. Our client uses barcoding within their business and we use barcoding within our…
user3363028
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Generating genesis.conf for Clique PoA private network via command line

I'm trying to generate a Clique POA genesis file that specifies the original sealers using automation. However, puppeth only supports user input at the moment. There's no support for command line options such as. puppeth genesis --protocol clique…
Daniel Sarosi
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Communication between nodes of two private blockchains

How can the nodes on one Ethereum private blockchain send/receive transactions from the nodes operating on another private blockchain?
sourh
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Where can I set the max/total supply of ether for a private ethereum blockchain?

I have created a private ethereum based blockchain and I would like to set the max/total supply and not sure where to do this or how to do this during the genesis block creation.
Lismore
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Should genesis.json be copied to each node for private testnet?

I am referring to the main page of go-ethereum here. With the genesis state defined in the above JSON file, you'll need to initialize every Geth node with it prior to starting it up to ensure all blockchain parameters are correctly set: $ geth…
tera
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bind address is already in use

I am very new to blockchain. I try to go through the following example but I can not make the second node. how-to-build-a-private-ethereum-blockchain What I have done I have two directories for each node in the go-ethereum directory(node1, node2). I…
László Péter Varga
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