Recent questions tagged blockchain

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Ethereum solidity: Unable to get value from another contract

Oct 15, 2018 in Blockchain by digger
 • 26,740 points • 2,606 views
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1 answer

What is the default network that truffle migrates to when the config has 2 networks?

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 2,680 views
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1 answer

Ethereum nodejs: Contract address returning as undefined in console

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 2,987 views
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1 answer

How to save complex object in the contract in solidity

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 4,633 views
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1 answer

Solidity geth: Error encountered during contract execution [Bad instruction]

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 2,800 views
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1 answer

UnhandledPromiseRejectionWarning: Insufficient funds error in Ethereum: NodeJS web3

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 2,314 views
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1 answer

Solidity: logical AND outputs parser error

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 2,634 views
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1 answer

How do Ethereum node compete for blocks?

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 2,004 views
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1 answer

How to force gradle to take UTF-8 encoding instead of operating system default encoding?

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 8,577 views
0 votes
1 answer

How to input realtime data from google sheets into urlfetch google scripts?

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 2,449 views
0 votes
4 answers

Issue with getting web3.eth.accounts (MetaMask)

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 6,887 views
0 votes
1 answer

Is the msg.sender address changed while passing to another contract as a parameter?

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,326 views
0 votes
1 answer

Blockchain: Installing an earlier version of ethereum using apt-get on

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,557 views
+1 vote
2 answers

Integrating web3 from Metamask: "ReferenceError: window is not defined" error

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 8,887 views
0 votes
1 answer

Using json rpc with curl on java?

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 3,920 views
0 votes
1 answer

Ethereum generating genesis Python Syntax

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,746 views
0 votes
1 answer

Where is the geth.exe in the Ethereum mist?

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 1,774 views
0 votes
1 answer

TypeError: XMLHttpRequest is not a function when using web3 on meteor server side

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 2,044 views
0 votes
1 answer

Getting Invalid number of parameters for “undefined” when deploying smart contract

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 4,187 views
0 votes
1 answer

Calling function in truffle console error

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 3,957 views
0 votes
1 answer

Transfer the gas value of contract to my own address

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 1,425 views
0 votes
1 answer

Store contract results tag in a variable

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 1,197 views
0 votes
1 answer

Ethereum: functions Burn and Transfer source

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 2,897 views
0 votes
1 answer

Etheruem: Unable to import library in Remix IDE

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 2,662 views
0 votes
1 answer

Creating an account with web3.js v0.2.6

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 1,551 views
0 votes
1 answer

How to allow request from host machine and deny from other machine, using ethereum in docker?

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 1,653 views
0 votes
1 answer

Nodejs Express: Getting different output in console.log and callback

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 1,331 views
0 votes
1 answer

I am not able to change array elements globally

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 1,545 views
0 votes
1 answer

Truffle Compile failing, ParserError: Expected token LParen got Identifier function

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 3,581 views
0 votes
1 answer

Getting “web3.eth.filter is not a function” while trying to monitor Ethereum blocks

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 3,688 views
0 votes
1 answer

Solidity ParserError: Expected identifier but got '='

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 11,380 views
0 votes
1 answer

truffle migrate Error

Oct 8, 2018 in Blockchain by slayer
 • 29,370 points • 2,115 views
0 votes
1 answer

How can I inject and use this javascript library (web3) with JavascriptCore

Oct 8, 2018 in Blockchain by slayer
 • 29,370 points • 1,890 views
0 votes
1 answer

Get specific JSON data value using array from Coin Market Cap API

Oct 8, 2018 in Blockchain by slayer
 • 29,370 points • 3,016 views
0 votes
1 answer

How to choose which function is called first in Node Js

Oct 8, 2018 in Blockchain by slayer
 • 29,370 points • 1,551 views
0 votes
1 answer

javascript bytes32 to string

Oct 8, 2018 in Blockchain by slayer
 • 29,370 points • 4,158 views
0 votes
1 answer

pubToAddress method from ethereumjs-util throws AssertionError: false == true

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 2,238 views
0 votes
1 answer

What is the difference between creating a new solidity contract with and without the `new` keyword?

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 2,139 views
0 votes
1 answer

Ethereum, web3, Error: invalid argument 0: cannot unmarshal non-string as hex data, when I call a contract

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 3,832 views
0 votes
1 answer

Solidity different token price

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 1,781 views
0 votes
1 answer

Sending hash in function parameter

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 1,967 views
0 votes
1 answer

How can I deploy a hyperledger business network using docker-compose?

Oct 4, 2018 in Blockchain by sabby
 • 4,370 points • 2,472 views
0 votes
1 answer

How to define the path to hyperledger-fabric chaincode?

Oct 4, 2018 in Blockchain by sabby
 • 4,370 points • 2,504 views
0 votes
1 answer

Contract deployment is raising gas issue while transaction and issue vary on various networksbl

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 1,664 views
0 votes
1 answer

Error when Installing Ethereum: Package 'ethereum' has no installation candidate

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 1,742 views
0 votes
1 answer

Web is not injected by metamask

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 1,988 views
0 votes
1 answer

Truffle migrate fails due to missing function, but it exists in node_modules

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 3,172 views
0 votes
1 answer

Access variables through auto-generated getters from a different contract

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 1,640 views
0 votes
1 answer

Handling UI when a trasaction is in pending (MetaMask)

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 2,062 views
0 votes
1 answer

Error when trying to deploy Ethereum smart contract using web3j

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 2,672 views
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