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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Connecting to a private Blockchain via a Dapp
How can I choose an a node to randomly connect to on the cluster?
I can already connect my Dapp to the private node. But what happens in case that node is not available or a different node is more ...
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Node Permissioning over Governance Smart Contract has problems in OpenEthereum Chain
I work at a supply chain solution that uses a Private, Permissioned, Open Ethereum Chain. Everything is configured over Smart Contracts (Permissioning / Validators / Allowed Nodes). These have an ...
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GETH - BAD BLOCK : Error: invalid merkle root - Transactions and block stuck in pendings
I'm having problems with geth when I try to send transactions on my private blockchain being developed using Geth.
Practically a block is blocked in pending with around twenty transactions inside it ...
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Performance Analysis of Private Ethereum Blockchain using Prometheus and Grafana
I have built a private blockchain network using goEthereum with PoA consensus model using Clique. The nodes are live and connected. I want to measure its performance(Throughput, latency..), using ...
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RPC endpoint for production environments
Context
For testing environments, I'm spinning up AWS instances with App-chain client nodes and using the AWS ALB to access the exposed RPC endpoint. It is protected by the security group rules, so ...
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How to give a name to my forked Ethereum blockchain
I created my own private blockchain with Go Ethereum, now I want to put my own name for the symbol and network name. To do this, I checked the BSC code, it is a fork of Ethereum, and the BNB name in ...
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Foundry : cast storage command storage slot argument posing length issue
When I try to get the private variable stored at storage slot 0 of the contract storage using the cast storage command,
cast storage <my-contract-address> 0 --rpc-url <my-rpc-url>
I get ...
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Data is not updating in the chaincode
This is my HTML form
<div class="text-center form-container">
<form id="updateForm" action="" name="updateOwner" style="display: none;&...
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A node just to act as sync point / checkpoint server
I've created a small private blockchain with 3 full nodes 100% synced (1 Exec, 1 Consensus and 1 Validator each). All are working fast and smooth like a charm.
Now I need to keep another nodes just to ...
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failed to deploy smart contract on my private network
I created a private network of POA, and I use clef to seal blocks like this:
I have successfully run this chain becaues it can produce blocks and I can create transactions between 2 accounts, and ...
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I'm running a private Geth PoA chain and my signers are failing to start due to a "gap in the chain between ancients". Is there any help I can get?
So the title doesn't include steps I've tried, given that there are character limits. The long and the short of it is that I'm running a private geth PoA chain and my signers/sealers were getting a ...
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Consensus and Execution don't sync anymore after restart
After put my private blockchain to run ( from https://docs.prylabs.network/docs/advanced/proof-of-stake-devnet ) I was happy because all was working very fine.
But after I stop my 3 containers: The ...
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How to persist data (the chain itself) in a Docker private blockchain?
I'm creating a Docker private blockcain from here:
https://medium.com/scb-digital/running-a-private-ethereum-blockchain-using-docker-589c8e6a4fe8
But I'm afraid to lost all my data if I need to delete/...
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Get number of created blocks in a day in Quorum
I'm looking for a query to query Quorum node to get the number of blocks created in a day. Is there any direct query to do the same?
Also, how to iterate over each created block to check the number of ...
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mempool not having broadcasted transactions
I have private ethereum blockchain setup made using geth implementation of two nodes{A,B}. There is a node(A) which is directly connected to the website which sends thousands of transaction to node(A) ...
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What are some Tornado Cash alternatives?
I used Tornado Cash in its earlier days, but I stopped using it after it faced sanctions. What are some other dApps available that can be used for private transactions on Ethereum? I'm not referring ...
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Are accounts on Ganache Blockchain considered Nodes?
I wanted to ask a question: the accounts on Ganache are nodes, for example
I mean, if I am in the project, I let the account send the transaction to another account
This process considers that you are ...
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Creating a private chain "Fatal: Failed to write genesis block: can't start clique chain without signers" never solved the error message
I encountered an extraData error and an address error during the creation of the Ethereum private chain: "Fatal: Failed to write genesis block: can't start clique chain without signers", but ...
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Geth Private Network Problems
I am trying to set up a geth private network on my windows laptop and am failing badly at it as i cannot understand anything that's happening. The documentation on geth website is horrible and I just ...
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Guidelines of How to be a Blockchain Developer by Own Without a CS Degree
I want to develop my career in blockchain. I am a beginner. Can I have any guidelines on how to become a blockchain developer, please? I have learned just C and the basics of structured programming. I ...
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IP host management in truffle_config.js (Private Ethereum Network)
I have 3 Amazon Ec2 instances (each with a Geth node running on them) and I'm running over them my Private Geth Ethereum (PoA) blokchain and I wanted to ask if it was necessary to specify the IPs of ...
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Geth - Unclean shutdown detected
I am facing Unclean shutdown detected in my private chain. The nodes was shut down suddenly due to some unavoidable reasons but when I restart the nodes new blocks are not mined. Now, what can I do ...
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Private blockchain nodes not running in background
Sir I am creating a private blockchain using geth.
Doing it on aws ubuntu
My geth.service file contains
Unit]
Description=Ethereum go client
[Service]
User=root
Type=simple
Restart=always
After=...
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Sirato Explorer
I am able to setup a private ethereum network using hyperledger besu in my localhost:8545. I want to view the blocks that has been added to the blockchain, any guides on how can I do this?
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lolminer stops working on a private network at epoch 13
We are using lolminer (v1.67) for GPU mining on our private POW network. The miner was working fine up until we hit epoch 13. When we hit epoch 13, lolminer stopped working on all our NVIDIA GPUs with ...
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Invalid command in address while starting the node1 [closed]
When I try to configure my node1 using geth in vs code it's showing invalid command in the address. I have mentioned the signer address as well as node1 address clearly. Then also i am getting this ...
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Type error : Expression has to be an lvalue
I have made a smart contract for nft minting where there is a small part . while compiling I am getting this error .
here is the part where the error is
/**
* @dev Initializes the contract by ...
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Fatal: Error starting protocol stack: listen tcp 127.0.0.1:8545: bind: Only one usage of each socket address (protocol/network address/port)
I have this error when i try tu run my second node on Geth...I used authrpc.port but still the problem persists:
I ran my node1 with these commands:
geth --datadir node1 --networkid 2244 --allow-...
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Was trying to create a Reset Tokens Function, But I keep getting an error
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
contract LotteryApplication
{
address public manager;
address payable [] public participants;
address public LotteryWinner;
...
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Bad blockNumber and blockhash - Ethereum PoA private network
I was trying to develop a simple smart contract to be deployed in my private eth network...
The deployment works, transactions can be made to the contract, but there is a weird behaviour I am failing ...
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Heco-Chain Fork. Private Chain Consensus Gas Price Error
chain - private Chain,
in the send transaction. If gasPrice:0 is set, the blockchain does not crash, error-free transactions take place. but if gasPrice:1 or any other number the blockchain crashes.
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How is a private blockchain different from a public blockchain?
I'm building a project that will remain heavily between the limitations of a private blockchain.
These are my questions about the limitations or advantages of a private blockchain.
Do you have to pay ...
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In PoA network, Signer node doesn't work and "Persisted the clean trie cache" log printed by Geth!
I configured and launched a private network by Geth. Some nodes are signers, that should validate transactions and seal blocks. I expect signer nodes run syncedly ,do their job, validate transactions ...
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Chain id error while creating a new network custom RPC in metamask connecting private network in virtual machine
I have a dought related to the. Blockchain topic
Sir. I am creating a private blockchain POA
using geth
Using virtual machine
In between, I am connecting it to the metamask by creating custom RPC ...
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Private Ethereum blockchain development no Puppeth
After the removal of Puppeth from Geth (on January 31st), is there another tool similar to it that allows the simplified development of the Clique private network (PoA)?
If yes, could you give me more ...
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Is PoA private Ethereum a fault tolerant platform?
As mentioned here by SoluLab, HyperLedger Fabric is not a fault tolerant network. Is that true? What about a private Ethereum that is live on Proof-of-Authority (PoA) protocol? My mean of fault ...
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Sync Erigon to Geth
I have a geth server running on local with dev chain. I would like to sync an Erigon node with the geth server. I tried passing the geth enode address as staticpeer to the Erigon server but the ...
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Transactions not being mined on Quorum QBFT Chain
I am deploying the smart contract on Quorum QBFT Chain using Nethereum with running 5 Nodes,but transaction being not mined yet stucking in mining.
Please check and help me on it ...
I am adding my ...
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is this private Etherem based blockchain design spec possible for implementation?
I'm new to Ethereum / blockchain, so if some of the questions seem naive or stupid I apologize in advance.
The motivation is, I need a blockchain that can dynamically change its token supply based on ...
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Fatal: Error starting protocol stack: listen tcp "MyAWS_Istance_IPaddress":8545: bind: The requested address is not valid in its context
I've been looking everywhere for this error and I can't figure out how to get my node to start.
I'm developing a private network using Puppeth and I'm trying to connect my nodes to the Amazon EC2 ...
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How can recharge account balance without reconfig GoEthereum In a PoA private network?
As we know, In a PoA private Ethereum network, There is a genesis file and the balance of each account is determined there and the network is live based on this config. Now, What should we do if we ...
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How to change the chainId of a cloned blockchain?
I have two private networks running. A Main Net and Test Net.
I am considering the possibility of occasionally forking the Main Net to a Test net so that i can test with the latest Main net data.
I ...
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how to build private network for real use cases like enterprise ? is it possible to use HTTPS ?
hi dear reader thank you first for reading my post appreciated , i hope if you could help with this question mainly by providing the common ground and links to read more i only have 3 question
1- how ...
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hardhat fork of private network with zero gas fees still requires a balance to perform a transaction
I forked my private network in hardhat using the below hardhat.config.js
My network gas zero gas fees so we dont have any balances.
module.exports = {
networks: {
hardhat: {
...
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0x Launch Kit + private network
there's a way to connect 0x Launch Kit to my private network eth made with geth, if so please explain all the steps,I have already tried changing the parameters of docker-compose.yml with those of my ...
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Error :The contract code couldn't be stored, please check your gas limit
I am trying to deploy my contract on sepolia test network .I have 2.1192 sepolia test eth . Everytime I try to deploy the contract I got the same error . saying :
The contract code couldn't be stored,...
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Nodes can't connect to each other on virtual machine with public IP (direct internet) - Private
I created a local private chain. I created the 4 nodekey for each node.
Each node is running in our datacenter with a public ip (direct internet access without NAT and without firewall at all). IP ...
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Is there a way to change the block hashing method of private Etherem?
As all we know, Ethereum hashes blocks by Keccak-256 and this method used in private Ethereum too. Now, if we need to use Keccak-512 for hashing blocks in a PoA private Ethereum (For our project), ...
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Is it feasible to open http port (8545) and udp port (30300) of validator?
I need to connect with the validator and i have open ports. open http (8545) and udp (30300) ports are opened.
The exposed apis are also listed below. Is it security threat to open these ports. .
eth,...
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I am able to import account from private blockchain to Metamask but there is no balance shown
I know there is a question with very similar title posted here but my question is a bit different.
In my scenario, I created a private blockchain and created an account there with some funds.
So in my ...
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