Recent questions tagged ethereum

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1 answer

Web is not injected by metamask

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 1,031 views
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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 • 2,152 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 • 602 views
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1 answer

Handling UI when a trasaction is in pending (MetaMask)

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 1,128 views
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1 answer

Error when trying to deploy Ethereum smart contract using web3j

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 1,688 views
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1 answer

What happens to Ether in a smart contract after selfdestruct?

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 1,240 views
0 votes
1 answer

Truffle migration error (test rpc is running)

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 826 views
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1 answer

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

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 3,341 views
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1 answer

How do I initialize an array in a struct

Oct 1, 2018 in Blockchain by sabby
 • 4,370 points • 3,157 views
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2 answers

Modifiers in solidity

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 2,231 views
0 votes
1 answer

How to make Observable from callback?

Oct 1, 2018 in Blockchain by slayer
 • 29,370 points • 2,720 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 • 1,546 views
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1 answer

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

Oct 1, 2018 in Blockchain by slayer
 • 29,370 points • 967 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 • 747 views
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1 answer

Send all Tokens and Eth to a Address automatically

Oct 1, 2018 in Blockchain by slayer
 • 29,370 points • 4,434 views
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1 answer

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

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 2,114 views
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1 answer

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

Oct 1, 2018 in Blockchain by slayer
 • 29,370 points • 961 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 • 6,250 views
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1 answer

Solidity mocha : address is not a contract error

Oct 1, 2018 in Blockchain by slayer
 • 29,370 points • 1,239 views
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1 answer

Invalid method parameters for eth_sendTransaction

Sep 28, 2018 in Blockchain by slayer
 • 29,370 points • 2,031 views
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1 answer

How to run Meteor insert within a Fiber?

Sep 28, 2018 in Blockchain by digger
 • 26,740 points • 904 views
0 votes
1 answer

Etheruem: Pyethereum Error

Sep 28, 2018 in Blockchain by slayer
 • 29,370 points • 546 views
0 votes
1 answer

Uncaught ReferenceError: web3 is not defined at window.onload

Sep 28, 2018 in Blockchain by digger
 • 26,740 points • 2,511 views
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1 answer

How are the ethers sent to smart contract in the IBM example?

Sep 28, 2018 in Blockchain by slayer
 • 29,370 points • 677 views
0 votes
1 answer

Can't call contract function in truffle console

Sep 28, 2018 in Blockchain by digger
 • 26,740 points • 3,223 views
0 votes
1 answer

Why estimateGas always returns null or zero?

Sep 28, 2018 in Blockchain by slayer
 • 29,370 points • 1,382 views
0 votes
1 answer

ethereum eth_sendTransaction via PHP curl

Sep 27, 2018 in Blockchain by digger
 • 26,740 points • 5,131 views
+1 vote
3 answers

Pass parameter as bytes32 to Solidity Smart Contract

Sep 27, 2018 in Blockchain by slayer
 • 29,370 points • 9,978 views
0 votes
1 answer

How to achieve simple OOP in Solidity?

Sep 27, 2018 in Blockchain by digger
 • 26,740 points • 986 views
0 votes
1 answer

Truffle init: throw er; // Unhandled 'error' event

Sep 27, 2018 in Blockchain by slayer
 • 29,370 points • 2,676 views
0 votes
1 answer

NPM cannot install “truffle” on Windows

Sep 27, 2018 in Blockchain by digger
 • 26,740 points • 4,260 views
0 votes
3 answers

python ethereum (pyethapp): Failed building wheel for scrypt.

Sep 27, 2018 in Blockchain by slayer
 • 29,370 points • 1,827 views
0 votes
1 answer

Can't install pyethereum module

Sep 27, 2018 in Blockchain by digger
 • 26,740 points • 1,135 views
0 votes
1 answer

How do I compile a piece of Solidity Code using eris' javascript?

Sep 27, 2018 in Blockchain by slayer
 • 29,370 points • 973 views
0 votes
1 answer

Getting error during “truffle migrate” for an ethereum contract on testrpc

Sep 27, 2018 in Blockchain by digger
 • 26,740 points • 702 views
0 votes
1 answer

How do I send ether from an EOA to a smart contract?

Sep 27, 2018 in Blockchain by slayer
 • 29,370 points • 1,734 views
+1 vote
1 answer

Deploy contract using solcjs

Sep 26, 2018 in Blockchain by digger
 • 26,740 points • 1,145 views
+1 vote
1 answer

Calling deployed smart contract from node.js

Sep 26, 2018 in Blockchain by slayer
 • 29,370 points • 4,207 views
+1 vote
1 answer

Solidity: Sending ERC20 Tokens

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

Solidity: How can I return a list of user-defined function?

Sep 26, 2018 in Blockchain by slayer
 • 29,370 points • 1,472 views
0 votes
1 answer

How can I get the same return value as solidity `abi.encodePacked` in Golang?

Sep 26, 2018 in Blockchain by digger
 • 26,740 points • 4,404 views
0 votes
1 answer

How connect library to smart contract from external resources?

Sep 26, 2018 in Blockchain by slayer
 • 29,370 points • 678 views
0 votes
1 answer

Is it possible to send eth to a contract through its constructor from another contract?

Sep 26, 2018 in Blockchain by digger
 • 26,740 points • 1,815 views
0 votes
1 answer

Testrpc Error: listen EADDRINUSE :::8545 on Mac

Sep 26, 2018 in Blockchain by slayer
 • 29,370 points • 1,068 views
0 votes
1 answer

Nethereum C# Unit Test GetTransactionCount

Sep 26, 2018 in Blockchain by digger
 • 26,740 points • 1,473 views
0 votes
1 answer

Error using EtherJS: this.provider.getTransactionCount is not a function

Sep 26, 2018 in Blockchain by slayer
 • 29,370 points • 2,704 views
0 votes
1 answer

Cannot access web3 object with typescript and ethereum

Sep 25, 2018 in Blockchain by digger
 • 26,740 points • 3,005 views
0 votes
1 answer

Poloniex C# API - get trades

Sep 25, 2018 in Blockchain by slayer
 • 29,370 points • 1,618 views
0 votes
1 answer

How to set token price in solidity?

Sep 25, 2018 in Blockchain by digger
 • 26,740 points • 9,010 views
0 votes
1 answer

Ethereum call contract method that emits an event, from another contract

Sep 25, 2018 in Blockchain by slayer
 • 29,370 points • 2,383 views
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