Recent questions tagged blockchain

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Using json rpc with curl on java?

Oct 10, 2018 in Blockchain by slayer
 • 29,350 points • 2,427 views
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Ethereum generating genesis Python Syntax

Oct 10, 2018 in Blockchain by slayer
 • 29,350 points • 675 views
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Where is the geth.exe in the Ethereum mist?

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 679 views
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TypeError: XMLHttpRequest is not a function when using web3 on meteor server side

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 863 views
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Getting Invalid number of parameters for “undefined” when deploying smart contract

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 2,913 views
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Calling function in truffle console error

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 2,713 views
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Transfer the gas value of contract to my own address

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 380 views
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Store contract results tag in a variable

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 356 views
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Ethereum: functions Burn and Transfer source

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 1,774 views
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1 answer

Etheruem: Unable to import library in Remix IDE

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 1,370 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 • 526 views
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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 • 539 views
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1 answer

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

Oct 9, 2018 in Blockchain by slayer
 • 29,350 points • 347 views
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I am not able to change array elements globally

Oct 9, 2018 in Blockchain by slayer
 • 29,350 points • 467 views
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1 answer

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

Oct 9, 2018 in Blockchain by slayer
 • 29,350 points • 2,268 views
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Getting “web3.eth.filter is not a function” while trying to monitor Ethereum blocks

Oct 9, 2018 in Blockchain by slayer
 • 29,350 points • 2,400 views
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1 answer

Solidity ParserError: Expected identifier but got '='

Oct 9, 2018 in Blockchain by slayer
 • 29,350 points • 9,005 views
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1 answer

truffle migrate Error

Oct 8, 2018 in Blockchain by slayer
 • 29,350 points • 1,140 views
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1 answer

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

Oct 8, 2018 in Blockchain by slayer
 • 29,350 points • 780 views
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Get specific JSON data value using array from Coin Market Cap API

Oct 8, 2018 in Blockchain by slayer
 • 29,350 points • 1,660 views
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1 answer

How to choose which function is called first in Node Js

Oct 8, 2018 in Blockchain by slayer
 • 29,350 points • 444 views
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1 answer

javascript bytes32 to string

Oct 8, 2018 in Blockchain by slayer
 • 29,350 points • 3,126 views
0 votes
1 answer

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

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 1,066 views
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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 • 942 views
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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 • 1,783 views
0 votes
1 answer

Solidity different token price

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 638 views
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1 answer

Sending hash in function parameter

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 516 views
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1 answer

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

Oct 4, 2018 in Blockchain by sabby
 • 4,390 points • 1,273 views
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1 answer

How to define the path to hyperledger-fabric chaincode?

Oct 4, 2018 in Blockchain by sabby
 • 4,390 points • 1,185 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 • 517 views
0 votes
1 answer

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

Oct 3, 2018 in Blockchain by slayer
 • 29,350 points • 626 views
0 votes
1 answer

Web is not injected by metamask

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 819 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
 • 29,350 points • 1,719 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 • 368 views
0 votes
1 answer

Handling UI when a trasaction is in pending (MetaMask)

Oct 3, 2018 in Blockchain by slayer
 • 29,350 points • 686 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 • 1,423 views
0 votes
1 answer

What happens to Ether in a smart contract after selfdestruct?

Oct 3, 2018 in Blockchain by slayer
 • 29,350 points • 725 views
0 votes
1 answer

Truffle migration error (test rpc is running)

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 628 views
0 votes
1 answer

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

Oct 3, 2018 in Blockchain by slayer
 • 29,350 points • 3,016 views
0 votes
1 answer

How do I initialize an array in a struct

Oct 1, 2018 in Blockchain by sabby
 • 4,390 points • 2,773 views
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1 answer

Cannot find package “google/protobuf”

Oct 1, 2018 in Blockchain by sabby
 • 4,390 points • 3,189 views
0 votes
2 answers

Modifiers in solidity

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 1,804 views
0 votes
1 answer

How to make Observable from callback?

Oct 1, 2018 in Blockchain by slayer
 • 29,350 points • 2,481 views
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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 • 1,280 views
0 votes
1 answer

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

Oct 1, 2018 in Blockchain by slayer
 • 29,350 points • 741 views
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1 answer

Web3j: Writing operations on a contract always throw “java.lang.ArrayIndexOutOfBoundsException”

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 537 views
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1 answer

Send all Tokens and Eth to a Address automatically

Oct 1, 2018 in Blockchain by slayer
 • 29,350 points • 4,004 views
0 votes
1 answer

Ethereum client-go RPC response 403 “invalid host specified”

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 1,725 views
0 votes
1 answer

How to call function in one contract from another contract in private blockchain?

Oct 1, 2018 in Blockchain by slayer
 • 29,350 points • 712 views
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1 answer

web3.eth.sendSignedTransaction() always return “Returned error: nonce too low”

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 5,628 views
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