Hottest Questions Today

0

votes

2

answers

13

views

How to pass arguments to the constructor while testing an contract using web3

web3js contract-deployment

modified 5 hours ago Ivan Zakharov 63

0

votes

1

answer

15

views

Is it possible to have ERC20 token (A) own other ERC20 tokens (X, Y, Z)

answered 8 hours ago Lauri Peltonen 5,509

0

votes

0

answers

25

views

ethereum-bridge oracle on private network does not receive queries

go-ethereum private-blockchain oracles

asked 11 hours ago David 101

1

vote

0

answers

14

views

Where is string stored in solidity storage?

solidity storage string keccak

asked 10 hours ago Gonzalo De Benito Cassadó 6

0

votes

0

answers

11

views

How to deploy a smart contract using Infura and web3js@1.x.x on NodeJS?

contract-deployment javascript nodejs infura web3js-v1.x

modified 6 hours ago Aquila 1,282

0

votes

0

answers

12

views

Alternatives for offline signing

web3js

modified 11 hours ago klautern 1

0

votes

0

answers

11

views

Deploying large contract (bytecode = ~31k) in genesis.json causes genesis.json to be ignored

go-ethereum gas gas-limit quorum genesis

modified 14 mins ago Chris 101

0

votes

1

answer

16

views

Web3 not connecting with ropsten through infura

solidity web3js truffle ropsten

modified 3 hours ago Willower 11

0

votes

1

answer

18

views

Facing UnhandledPromiseRejectionWarning warning message in web3 infura

web3js infura

answered 15 hours ago Cehhiro 101

3

votes

2

answers

25

views

Passing '-1' to a solidity function which takes a 'uint256' argument as input

web3js truffle uint256

answered 13 hours ago Rick Park 1,505

0

votes

1

answer

19

views

Is it okay to define the following smart contract that a accepts funds from two parties?

go-ethereum contract-development contract-design contract-deployment

answered 14 hours ago Mudit Gupta 26

1

vote

0

answers

20

views

web3.eth.getAccounts() : Cannot read property 'map' of undefined

web3js remix contract-deployment rinkeby

modified 4 hours ago Aniket 2,174

0

votes

1

answer

15

views

How to get the last n bytes of a bytes32 in assembly?

bytes assembly

answered 17 hours ago flygoing 7,185

0

votes

1

answer

19

views

Can use smart contract as payment gateway [on hold]

contract-design tokens erc-20

answered yesterday Rob Hitchens B9lab 28.1k

5

votes

2

answers

85

views

How is it possible to pay 2,100 Ether ($309,267) for a transaction fee?

transactions gas gas-limit gas-price fees

modified yesterday alper 2,370

0

votes

0

answers

12

views

Invalid JSON Response while connecting DApp, Metamask and Backend

web3js truffle metamask ethereum-wallet-dapp dapps

asked yesterday gorpen 13

2

votes

2

answers

19

views

How to speed up data loading from the blockchain to the frontend?

solidity contract-design frontend

modified yesterday shane 1,891

2

votes

0

answers

22

views

Why I can't use two functions with same name, but different parameters

solidity web3js remix contract-deployment abi

modified yesterday Rob Hitchens B9lab 28.1k

0

votes

0

answers

16

views

Revert on ERC20.transferFrom

solidity web3js truffle erc-20 truffle-migration

modified yesterday isaacsultan 112

2

votes

1

answer

21

views

the Constantinople upgrade activates at Block #7280000

go-ethereum

answered yesterday Mikko Ohtamaa 7,007

-1

votes

0

answers

15

views

Declaration error: please help

solidity erc-20

modified yesterday Andrew Strange 1

0

votes

1

answer

49

views

I can't get ERC20 token sweep from a contract to work

solidity go-ethereum erc-20

modified 2 hours ago mmitech 1

0

votes

1

answer

54

views

Getting error while buying test ether from https://faucet.metamask.io/

metamask ropsten mastering-ethereum

modified yesterday user50883 1

0

votes

1

answer

13

views

Quorum Tessera Implementation in Go

quorum

answered yesterday fixanoid 779

1

vote

0

answers

17

views

Unable to retrieve ethereum address from the signed data

web3js metamask javascript

asked yesterday Akshay Nambiar 6

1

vote

0

answers

12

views

Error: Cannot create instance of X; no code at address

solidity web3js truffle truffle-migration ganache

asked yesterday isaacsultan 112

0

votes

0

answers

15

views

Truffle migrate not working with 2_deploy_contracts.js

truffle truffle-migration ganache solidity-0.5.0

modified yesterday Akhil Kintali 66

1

vote

1

answer

27

views

Is it possible to call a payable function within __callback of Oraclize?

go-ethereum oracles payable

answered yesterday Riccardo Persiani 181

0

votes

1

answer

25

views

Buy/Sell Smart Contract - how to start?

contract-development

answered yesterday GrandFleet 678

0

votes

1

answer

12

views

changing source of random number based on reward?

oracles blocks randomness difficulty

answered yesterday AnAllergyToAnalogy 2,034

0

votes

1

answer

16

views

How to get decrypted transaction data in quorum?

transactions quorum encryption

answered yesterday fixanoid 779

1

vote

1

answer

14

views

Geth Proof of Authority Implementation

go-ethereum web3js private-blockchain proof-of-authority

answered yesterday Saeedi 20

0

votes

0

answers

21

views

Truffle Pet Shop Tutorial App.js - Send Multiple Form Values to Function

truffle

modified yesterday Kevin Phillips 26

0

votes

1

answer

21

views

can we pay the gas price in form of token?

solidity web3js blockchain

answered 2 days ago Mahesh Rajput 533

0

votes

1

answer

13

views

Props object value not flowing to next page [on hold]

blockchain javascript ethereumjs react

answered yesterday GrandFleet 678

0

votes

1

answer

11

views

Getting Fatal: Error starting protocol stack: Genesis not found in chain

go-ethereum quorum genesis

answered yesterday fixanoid 779

1

vote

2

answers

22

views

Does any reverting instruction (assert, require, revert, throw, etc) undo ETH transfer?

exceptions

modified yesterday eth♦ 54.8k

0

votes

0

answers

18

views

API for private state

private-blockchain

modified 2 days ago A.Gh 32

0

votes

1

answer

17

views

Can i call transfer function in other contract?

tokens erc-20

answered 2 days ago abed 342

0

votes

1

answer

17

views

I am following Ethereum Book, but I am getting errors in the Terminal

solidity go-ethereum contract-development parity

answered 2 days ago abed 342

0

votes

2

answers

28

views

Uncaught Error: Invalid number of arguments to Solidity function

solidity metamask javascript json-rpc

modified yesterday shane 1,891

0

votes

0

answers

12

views

Issue with truffle migrate

truffle truffle-migration ganache

asked 2 days ago user9851564 21

0

votes

1

answer

16

views

Block header hash calculation [on hold]

go-ethereum hash ethash block-header

answered yesterday AnuragP 46

1

vote

1

answer

15

views

block hash from block-header rlp [on hold]

hash keccak rlp block-header

answered yesterday AnuragP 46

0

votes

0

answers

17

views

Token transfer failed - Reverted

tokens

modified 2 days ago Ingrid Cristaldo 11

0

votes

0

answers

16

views

Web3js: How to check the progress sendSignedTransaction()?

web3js

modified 2 days ago Argel Asidera 1

0

votes

1

answer

20

views

Pushing constructor result to contract member array

solidity contract-development truffle contract-design storage

answered yesterday Rob Hitchens B9lab 28.1k

Top Questions

Looking for more? Browse the complete list of questions, or popular tags. Help us answer unanswered questions.