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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Server returned HTTP status 404 Not Found

I am running a local ethereum PoA(clique) network in my windows computer using geth with 2 nodes. I am very new to this. I am trying to get the performance data of the chain using prometheus. I used ...
Dinith Arunasiri's user avatar
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Lodestar Becon Layer Error

I am trying to set up a beacon client for my private network, I got this error, Error: First offset must equal to fixedEnd 2736633 != 2736653. What does this mean? The config.yaml file for the beacon ...
Vidhan Mangla's user avatar
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Hyperledger-caliper Ethereum Benchmarking (Error: nonce undefined)

I am using hyperledger-caliper to benchmark the Ethereum local network (Ganache). The contract is a simple storage contract, nothing fancy. I can deploy the contract using the code provided below. But ...
111Seven's user avatar
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Is there a way to set up a PoS private blockchain

I am tryiong to set a PoS eth v2 private blockchain using geth and prysm I ve been trying lots of different things but do not mange to extend the working example I found : https://github.com/...
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"Waiting for deposit to be observed by beacon node pubKey=0x8b189a7f4669 status=UNKNOWN_STATUS" in Prysm Private Net

I followed "https://www.reddit.com/r/ethstaker/comments/jrkbe2/my_checklist_to_create_and_verify_accounts_and/" to run the validator in my private devnet using staking-deposit-cli and ethdo. ...
Bhavika's user avatar
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Account Balances Not Updating When Interacting with Smart Contract on Private OpenEthereum Network

Context: I have set up a private Ethereum network using OpenEthereum, configured with four nodes: a validator node, two non-validator nodes, and an RPC node. This setup is part of a project for a ...
Martin's user avatar
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How to measure the block production rate of the private chain

I recently built an Ethereum private chain(clique) with two nodes. The genesis file is as follows: { "config": { "chainId": 53783, "homesteadBlock": 0, &...
lpx's user avatar
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WARN [01-03|14:06:54.902] Block sealing failed err="unauthorized signer"

{ "config": { "chainId": 12345, "homesteadBlock": 0, "eip150Block": 0, "eip155Block": 0, "eip158Block": 0, "...
miner's user avatar
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How to join a channel in Hyperledger from another server?

I've deployed a chaincode on my VM i.e 192.168.4.110. Everything is working fine when I test it locally. Now I want my second VM i.e 192.168.4.112 to connect with the above Hyperledger's vm Channel. ...
Hamza Shafeeq's user avatar
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Geth private POA network behaving strangely

The Setup I have setup a private POA network using geth (v1.10.14). My network configurations are as following; BlockTime: 1sec Consensus: Clique Number of Signers: 3 Number of Miners: 3 I have ...
Asad Hayat's user avatar
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Geth and Lighthouse peers are added, but none of them are downloading / importing blocks from peers?

i am trying to run a private PoS network on a private organizational network (all ips are accessible only if you're connected to organization's intranet ) I am using geth as Execution Client and ...
Muhammad Yasir's user avatar
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Not able to use Private blockchain network in Safe-Infrastructure

i have my own private blockchain deployed via quorum and configured safe-infrastructure also on my local. the issue is whenever i am using Linea Georli testnet network i am able to create safe wallets ...
Nikhil Verma's user avatar
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Geth transactions not broadcast and stuck in pending state

Setup three Geth private network nodes(Clique) via docker container. They are deployed on three different VMs. Among 3 nodes, there is a miner node to mine the block, a RPC node to accept RPC request, ...
abcuse1111's user avatar
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How to check if a certain hard fork is enabled in your network?

We are running a private PoW (Proof of Work) network on geth I would like to know, how can i determine if a certain hard fork is enabled on my network ? For instance, how will i check if the London ...
Muhammad Yasir's user avatar
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Recover funds from a smart contract wrote a mistake by developers

Our developer has deployed a errored smart contract for a autopool plan, but the plan was expired 3 years ago. Users transfered funds to this contract. I am wondering if I can get back these funds ...
Nagalingeswaran C's user avatar
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Bootnode issue of unknown peer

When I am running a bootnode on AWS for a private blockchain and creating it, multiple peers are pinging it. What issues can arise, and how can I prevent other peers that we haven't connected from ...
Mustakbil Pakistan's user avatar
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How to run a PoS private network with geth & lighthouse?

So far for testing contracts, transactions and other dApp experiments I had worked with pre-established testnets (Rinkeby, Goerli etc) now i am tasked with deploying a private PoS network based on ...
Muhammad Yasir's user avatar
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depolying system contracts for new evm blockchain

i was trying to fork a dpos evm blockchain , how to deploy system contracts for dpos and slash and get the "code" data in genesis file as below ? "alloc": { "...
ft_lauderdale's user avatar
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How to change the gas price and gas limit in private blockchain

I wan to change the gas price and gas limit in the private blockchain as you know the currrent contract limit is 21000 so I want to change the default and also the gas limit I wan to cut more than 1 ...
Mustakbil Pakistan's user avatar
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etherbase address changes automatically in a private network

I am running a private Ethereum PoW network, which has a miner with a public IP address. Unfortunately, my miner's etherbase address is switching to an unknown address: "...
S.Rti's user avatar
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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 ...
Divyya's user avatar
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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 ...
Markus Knecht's user avatar
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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 ...
AlexCav's user avatar
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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 ...
Zero's user avatar
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2 votes
1 answer
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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 ...
quantumdust's user avatar
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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 ...
Mehran Ra's user avatar
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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 ...
h4mster's user avatar
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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;&...
Jubayer Hossain's user avatar
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1 answer
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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 ...
Magno C's user avatar
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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 ...
jds250's user avatar
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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 ...
This Guy's user avatar
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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 ...
Magno C's user avatar
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1 answer
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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/...
Magno C's user avatar
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14 views

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 ...
Siva Sankar's user avatar
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28 views

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) ...
Naman's user avatar
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2 answers
317 views

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 ...
Maximus Stacks's user avatar
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30 views

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 ...
Ghada AbdulWahab's user avatar
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202 views

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 ...
GuZhan's user avatar
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21 views

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 ...
Vidhan Mangla's user avatar
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1 answer
21 views

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 ...
Marjuk Sajid's user avatar
1 vote
0 answers
15 views

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 ...
AlexCav's user avatar
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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 ...
sharif2008's user avatar
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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=...
quick cricket's user avatar
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1 answer
171 views

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?
Kendaichi's user avatar
1 vote
0 answers
120 views

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 ...
pdmoerman's user avatar
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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 ...
Aravinth kumar's user avatar
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1 answer
27 views

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 ...
Yash Shah's user avatar
1 vote
1 answer
342 views

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-...
AlexCav's user avatar
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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; ...
Pratik Jussal's user avatar
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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 ...
hRPH5sVUtz167qsg8Gcw's user avatar

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