Hottest Questions Today

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0

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12

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How to deploy smart-contract without internet?

modified 1 hour ago Kojimba-san 9

0

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0

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11

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Gas estimation failed in geth private network with remix

solidity go-ethereum remix

modified 3 hours ago JongH 31

1

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0

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12

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Unique identification of transfers

transactions erc-20 logs

modified 12 hours ago Alex 11

1

vote

2

answers

57

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Is there any difference between address that have Smart Contract and “normal” one? [duplicate]

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answered 22 hours ago Morten 431

1

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1

answer

11

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Variable Names and Memory

solidity contract-development contract-design gas memory

modified 15 hours ago shane 4,296

1

vote

1

answer

23

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Are simultanous transactions possible (basic but potentially very dangerous security concern…most likely impossible…)?

solidity security evm raw-transaction

modified 23 hours ago sea212 783

1

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0

answers

14

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How to decode InputValue of ethereum using java web3j

solidity remix ethereum-wallet-dapp web3j java

modified 21 hours ago Aniket 11

2

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1

answer

40

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Is any 40 character hex string a valid ethereum address?

addresses keccak hash-algorithm

answered yesterday sea212 783

0

votes

1

answer

21

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Can we deploy a private blockchain on ethereum without using smart contract

solidity go-ethereum raft

modified yesterday sea212 783

0

votes

1

answer

19

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How are transfer and send protecting against reentrancy if the gas is taken from the EOA (msg.sender)?

solidity contract-development gas security reentrant-attacks

answered yesterday Rob Hitchens - B9lab 36.3k

0

votes

2

answers

26

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TypeError: Cannot create property 'constant' on number '123' web3js

solidity web3js nodejs

answered yesterday vteja711 94

1

vote

0

answers

11

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How to use Truffle HDWallet Provider with WebSocketProvider

websocket truffle-hdwallet-provider

asked yesterday Amr Shaker 11

-1

votes

2

answers

20

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Why EVM blockchain can't beat the credit card system in E-commerce [closed]

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answered 2 days ago haxerl 543

1

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1

answer

12

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Geth on Raspberry - not able to connect

go-ethereum

answered yesterday Kenny Meyer 121

0

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0

answers

18

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Is there any free crypto wallet api available [closed]

go-ethereum ethereum-wallet-dapp

asked yesterday sanya sareen 9

0

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0

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25

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How to know weather ETH or some token like USDT is transfered in smart contract transaction

go-ethereum transactions ether

asked 2 days ago Talha Talha 1

0

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0

answers

11

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metamask fails to be enable on the ethjs examples

ethjs

asked yesterday user57137 1

0

votes

1

answer

12

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Remove empty space in a Struct

struct

answered 2 days ago Lauri Peltonen 9,494

0

votes

0

answers

11

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How to filter erc20 events with particular address

solidity tokens

asked yesterday Love Chawda 7

1

vote

1

answer

16

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Storing, sending and receiving BTC using smart contracts?

solidity btcrelay

answered 2 days ago Lauri Peltonen 9,494

0

votes

0

answers

15

views

Error:gas required exceeds allowance (9975570) or always failing transaction

web3js

asked 2 days ago Madox 3

0

votes

1

answer

20

views

How dangerous is to use tx.origin to check if msg.sender is some address? (details below…)

solidity contract-development contract-design security selfdestruct

answered 2 days ago Jesse Busman 5,686

1

vote

0

answers

13

views

does vyper support contracts making contracts?

vyper

asked 2 days ago user57129 11

0

votes

1

answer

28

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How to check when erc20 token was received in certain address

solidity ether

answered Dec 11 at 6:39 toothleth_byte 146

0

votes

0

answers

11

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EIP-712 typed signature for arrays

web3js javascript signature eip

modified 2 days ago J. Hesters 113

0

votes

1

answer

15

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How to store token number with their holders?

tokens

modified Dec 11 at 8:50 Mikhail Vladimirov 3,354

2

votes

1

answer

17

views

Blockchain overhead - general question

blockchain private-blockchain blockchain-as-a-service

modified 2 days ago Lauri Peltonen 9,494

1

vote

1

answer

23

views

Cannot verify Solidity contract code on etherscan.io

etherscan contract-verification

answered Dec 11 at 2:06 Rob Hitchens - B9lab 36.3k

0

votes

0

answers

15

views

Invalid implicit conversion from int_const 0 to address requested [duplicate]

solidity truffle

modified Dec 11 at 7:32 eth♦ 63.8k

0

votes

2

answers

48

views

multisend ERC20 tokens

web3js

modified 2 days ago Ayurpwnz 25

1

vote

1

answer

15

views

Watching for events

web3js events etherscan react ethers.js

answered Dec 11 at 9:20 Jesse Busman 5,686

0

votes

1

answer

26

views

Is it possible that a contract address is same as a external address? [duplicate]

go-ethereum

answered Dec 11 at 9:26 Jesse Busman 5,686

1

vote

0

answers

23

views

Delegate transaction signature

web3js dapps ecdsa

asked Dec 10 at 22:13 Arsalen 35

0

votes

2

answers

23

views

How to get new transactions by addresses?

infura

modified Dec 10 at 15:33 Mikhail Vladimirov 3,354

0

votes

0

answers

23

views

How can execute function that send ether in geth console?

solidity go-ethereum transactions contract-invocation

modified Dec 10 at 14:53 atti 1

2

votes

0

answers

16

views

How to calculate vanity address using C? [duplicate]

addresses

asked Dec 10 at 20:11 Number File 121

1

vote

0

answers

17

views

Address to create a contract

web3js tokens contract-deployment contract-debugging

asked Dec 10 at 18:09 user7362292 11

1

vote

1

answer

13

views

how to create Function Selector (Method IDs)

solidity web3js javascript nodejs abi

answered Dec 10 at 11:47 goodvibration 8,848

-1

votes

1

answer

32

views

Using await with web3 function calls [closed]

solidity web3js contract-deployment javascript

modified Dec 10 at 20:04 Philip Rutovitz 307

0

votes

1

answer

18

views

Dispute in smart contartcs [closed]

solidity contract-design tokens

answered Dec 10 at 18:50 Rob Hitchens - B9lab 36.3k

0

votes

1

answer

18

views

Send transaction with locked contract -> Error: insufficient funds for gas * price + value

web3js gas-limit raw-transaction

modified Dec 10 at 12:41 Arnas Pecelis 1

1

vote

1

answer

28

views

Should I stop the geth node during hard-fork?

go-ethereum hardforks istanbul

answered Dec 11 at 9:28 Jesse Busman 5,686

1

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1

answer

30

views

Transfer WETH from myetherwallet to metamask wallet

ether metamask myetherwallet

answered Dec 9 at 9:33 Morten 431

0

votes

0

answers

23

views

Retrieving the first and latest transaction date of a contract

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modified Dec 9 at 17:02 mahamzaidi 94

2

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1

answer

53

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modified Dec 8 at 11:46 eth♦ 63.8k

0

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0

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18

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How to get BNB ERC-20 address from Binance API?

erc-20 exchange-api

modified Dec 9 at 17:34 kenmistry 131

0

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1

answer

17

views

How do I install Go-ethereum and solidity on Debian10

go-ethereum solc debian

modified Dec 9 at 17:34 Samuel Dare 938

2

votes

1

answer

26

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What is the Muir Glacier hardfork?

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answered Dec 8 at 18:57 shane 4,296

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