Recent questions tagged blockchain

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1 answer

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

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 1,571 views
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4 answers

Issue with getting web3.eth.accounts (MetaMask)

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 5,618 views
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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 • 1,448 views
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1 answer

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

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,565 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 • 7,307 views
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1 answer

Using json rpc with curl on java?

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,857 views
0 votes
1 answer

Ethereum generating genesis Python Syntax

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,035 views
0 votes
1 answer

Where is the geth.exe in the Ethereum mist?

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 948 views
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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 • 1,187 views
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1 answer

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

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 3,267 views
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1 answer

Calling function in truffle console error

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 3,046 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 • 657 views
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1 answer

Store contract results tag in a variable

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 534 views
0 votes
1 answer

Ethereum: functions Burn and Transfer source

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 2,188 views
0 votes
1 answer

Etheruem: Unable to import library in Remix IDE

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 1,758 views
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1 answer

Creating an account with web3.js v0.2.6

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 813 views
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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 • 849 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 • 588 views
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1 answer

I am not able to change array elements globally

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 803 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 • 2,636 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 • 2,804 views
0 votes
1 answer

Solidity ParserError: Expected identifier but got '='

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 9,865 views
0 votes
1 answer

truffle migrate Error

Oct 8, 2018 in Blockchain by slayer
 • 29,370 points • 1,379 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 • 1,048 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 • 2,005 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 • 698 views
0 votes
1 answer

javascript bytes32 to string

Oct 8, 2018 in Blockchain by slayer
 • 29,370 points • 3,395 views
0 votes
1 answer

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

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 1,365 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 • 1,302 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 • 2,136 views
0 votes
1 answer

Solidity different token price

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 979 views
0 votes
1 answer

Sending hash in function parameter

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 958 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 • 1,567 views
0 votes
1 answer

How to define the path to hyperledger-fabric chaincode?

Oct 4, 2018 in Blockchain by sabby
 • 4,370 points • 1,514 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 • 839 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 • 943 views
0 votes
1 answer

Web is not injected by metamask

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 1,041 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 • 2,161 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 • 612 views
0 votes
1 answer

Handling UI when a trasaction is in pending (MetaMask)

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 1,137 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 • 1,700 views
0 votes
1 answer

What happens to Ether in a smart contract after selfdestruct?

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 1,258 views
0 votes
1 answer

Truffle migration error (test rpc is running)

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 835 views
0 votes
1 answer

How do display all the events logs from a smart contract?

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 3,347 views
0 votes
1 answer

How do I initialize an array in a struct

Oct 1, 2018 in Blockchain by sabby
 • 4,370 points • 3,172 views
0 votes
1 answer

Cannot find package “google/protobuf”

Oct 1, 2018 in Blockchain by sabby
 • 4,370 points • 3,627 views
0 votes
2 answers

Modifiers in solidity

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 2,242 views
0 votes
1 answer

How to make Observable from callback?

Oct 1, 2018 in Blockchain by slayer
 • 29,370 points • 2,730 views
0 votes
1 answer

How to fix browser/IERC20.sol:4:53: Warning: This declaration shadows an existing declaration

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 1,553 views
0 votes
1 answer

Why is (startingBalance - endBalance) > (gasUsed * gasPrice) for an Ethereum transaction?

Oct 1, 2018 in Blockchain by slayer
 • 29,370 points • 974 views
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