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Questions tagged [private]

The tag has no usage guidance.

0
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2answers
30 views

How to transfer ERC20 tokes from Blockchain wallet to MyEtherWallet?

I got some token and by mistake sent them to my Blockchain ETH address. Now, what is the process of transferring them to MEW? They talk about exporting your private key, what does that mean and to ...
3
votes
1answer
89 views

How secured are private data stored on blockchain?

I'm quite new in Ethereum world and I'm still little bit confused about this: If I store any data on blockchain, is it readable from anyone? Let's say I have this is Solidity: ... string private ...
0
votes
1answer
19 views

part of private blockchain disapear

I have a private blockchain, mined by one ec2 instance. When I restart the instance, significant part of the chain disappear with all transaction and contracts on it. How can I prevent this?
1
vote
1answer
27 views

What are the correct steps to make connection and communication within one Node by creating Private Network in windows?

What are the correct steps to make connection and communication within one Node by creating Private Network in windows? Installation of Geth is done in windows successfully, puppeth is also running. ...
1
vote
2answers
43 views

How to restrict access to a function to the owner of the contract only?

I am trying to modify the contract function type to endorse the fact that ONLY the owner of the contract can verify if a Company has done the payment of 2 Ethers required. I tried with the following ...
0
votes
1answer
22 views

Incorrect Usage. flag needs an argument: -rpcaddr = Ethereum private blockchain

I'm trying to make Ethereum private blockchain. But facing a error while running this "geth --nodiscover --networkid 42 --datadir .ethereum/ --unlock 0x526d8a6baa472da27215f748236af96bc9f256d7--mine ...
0
votes
1answer
24 views

Private Variable [duplicate]

Question1: If I declare a private variable and put in personal information (if I did not create a getter function), does anyone have a way to see this information?
0
votes
1answer
55 views

Quorum private transaction is being reverted by EVM

I had setup an quorum network using quorum maker (3 nodes). I tried to perform a public transaction and it worked. But when I tried to perform a private transaction it gets reverted by the EVM node:...
0
votes
2answers
62 views

Encrypt data using public key

I have three data fields in a form which will return a string. I would like to hash the value of these three strings and store it in the blockchain. However the data in these three strings is ...
0
votes
1answer
126 views

Private Key Storage in Metamask Chrome

I recently treated myself to a fresh install of Ubuntu, however did not separately back up my keys from metamask. I still have the old .config/google-chrome folder however from my home directory. I've ...
1
vote
2answers
24 views

Unable to create a private chain

I am trying to create a private chain. this are my details { "nonce": "0x0000000000000042", "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000", "difficulty": "...
0
votes
0answers
13 views

Connect to other peer in --dev mode

I'm trying to establish a private network following this tutorial. The hardware I'm using is Rasberry Pi 3 with Ubuntu Mate. I've 1GB RAM, for this reason I'm running my node with the --dev flag on. ...
1
vote
0answers
174 views

Private Ethereum blockchain: missing trie node

I deployed a private blockchain with the following steps: Setting the difficulty to a fixed value (see Running a “quick” Ethereum private network for experimentation and testing) and creating the ...
0
votes
0answers
12 views

Eth on unlocking auto transfers

Facing a weird issue on geth console on my private network. So, I was trying to unlock an account so that my web3 can access it. As soon as I unlocked, all my ethers just vanished in seconds.. I could ...
0
votes
2answers
29 views

in windows10, private net cant connect to the other peers, geth: 1.8.11

System information Geth version: Geth/1.8.11-unstable OS & Version: WINDOWS10 I modified the main net Genesis config paras in DefaultGenesisBlock in genesis.go, and the MainnetBootnodes paras, ...
0
votes
0answers
59 views

private chain mining stuck in Submitted transaction

I run a private chain in vps with docker, it works fine util transaction submit. logs: it's not about the difficulty, few second for mining a new empty block, and mining stuck in "Submitted ...
1
vote
1answer
325 views

Inspecting private variables of a contract

In the solidity documentation, it is written Everything that is inside a contract is visible to all external observers. Making something private only prevents other contracts from accessing and ...
0
votes
0answers
30 views

A problem has been found in the part that sends / receives the Ether

We are building an Ethereum based private network using two PCs. A problem has been found in the part that sends / receives the Ether after building. So I want to find the answer to this part. Once ...
0
votes
1answer
133 views

Private Ethereum Chain and Web3 js API

I've developed my own private chain for testnet using geth and CLique and i have some issues with web3.js environment. I starts my nodes using the console parameter in order to get to the Web3 console ...
0
votes
0answers
50 views

Can you create your own private testnet server using Casper

I would like to know if its possible and if so how, I believe I would have to use the pyethereum client but I'm not sure where to go from there
0
votes
1answer
116 views

a problem in building a private network using Ethereum

There is a problem in building a private network using Ethereum. Geth version : 1.8.3 stable OS & Version : windows 10 my scenario is as follows. the genesis block is as follows { "config":...
1
vote
0answers
43 views

How to make my token in private network exchangeable? [duplicate]

I am recently creating a token in my private network and want my DAPP users to exchange the token within the network. But at any point of time, i want my users to exchange the tokens they have for ...
0
votes
1answer
36 views

I've created a private blockchain with geth and curious if this ether is real and spendable? [duplicate]

I have a small private network which generates roughly 20,000 ether daily.. I read of this private network configuration often and it seams like people are actually using this Ether as real ether that ...
3
votes
1answer
347 views

Setup PoS private network

I need to setup PoS private network with Casper and I cant find any official manual how to do it. There are only couple links which uses this git repo: https://github.com/karlfloersch/docker-pyeth-dev ...
6
votes
1answer
613 views

Read private data of smart contracts from Blockchain

Is there any way to read smart contracts private or internal data from Blockchain? The smart contract data is on Blockchain so probably the data can be read from servers. Is data encrypted on ...
0
votes
1answer
93 views

How do i make an ERC-Token Private or have a Ring signature like monero?

I'm currently building an erc token on the Ethereum blockchain. My goal is to make a token that has some sort of functionality that makes it private like Monero's Ring Signature. Is there any way to ...
0
votes
0answers
29 views

How to restrct joinging unwanted node in my network?

In private ethereum network using noodsicover if I add one node, that peer can also add another peer or node without knowing me. Can I restrict joinging other node or peer in my network? Also if a ...
-2
votes
1answer
1k views

I got this problem in my private ethereum blockchain(Node is not syncing, Node data write error ,Synchronisation failed, retrying)

I am new to ethereum and right now getting the ethereum blockchain using geth with geth --port 3000 --networkid 58342 --rpc --rpcport 8545 --rpcaddr 10.0.0.2 --rpccorsdomain "*" console INFO [03-...
0
votes
1answer
274 views

missing ether after uninstalling metamask

Lost my ether from Metamask when I uninstalled it and it did not show up when reinstalled...but it is showing on Etherdelta with the no private key error in red. How do I recover it please? I'm leery ...
0
votes
0answers
27 views

Control Flow Integrity in of any use in Smart Contracts?

Would there be any added security benefit to control flow integrity in smart contracts? Imagine in the case of a contract with public functions. If that same contract wants to use the public ...
0
votes
1answer
117 views

Lost Private key [duplicate]

I lost my private key and can not access to my account to send coin. I still hold my MEW address. So please help me with this case
0
votes
0answers
313 views

How to create an android wallet for Ethereum

There's a project that I would like to implement that would require me to implement a simple Ethereum wallet client for Android. I would like to know the basic building blocks for making such an ...
0
votes
4answers
319 views

Mining ether on Private Blockchain

If I create a private blockchain using Geth and mine ether using mine.start() in my account, the ether that is mined, is it real or just test ether ?
-5
votes
1answer
341 views

best language for creating private blockchain? [closed]

I am not being able to figure out, which lang is best for creating a private blockchain?