Hottest Questions This Month

1

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3

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131

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gasLimit 5000 on private Ethereum geth node

modified Nov 4 at 13:56 Vignesh Karthikeyan 1,573

0

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2

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214

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What is the proposed ETH 2.0 staking reward and minimum / maximum stake one can put on a node?

proof-of-stake supply

answered Oct 26 at 15:18 Patoshi パトシ 3,726

3

votes

2

answers

53

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Can a .eth domain from ENS be used for a website?

ens

modified Nov 13 at 20:52 alberto 1,428

0

votes

1

answer

140

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Fatal: Failed to write genesis block: unsupported fork ordering: eip150Block not enabled, but eip155Block enabled at 0 genesis block

go-ethereum private-blockchain geth-debugging

modified Nov 13 at 17:41 Leon Africa 11

1

vote

2

answers

83

views

Array Costs in Solidity

solidity remix gas arrays

modified Nov 11 at 13:32 Richard Horrocks 26.5k

1

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2

answers

31

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loop though all the members of a map

contract-development contract-design gas storage mapping

answered Nov 16 at 10:34 Rob Hitchens - B9lab 35.6k

0

votes

3

answers

37

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Web3.Utils - WeiToEth and EthToWei Conversion choking on decimals

web3js

modified Nov 7 at 20:45 NealWalters 229

1

vote

1

answer

57

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Accessing struct fields from assembly block

solidity struct assembly

answered Nov 6 at 10:04 alberto 1,428

1

vote

1

answer

44

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web3.eth.getCode doesn't return the data shown on etherscan

web3js etherscan bytecode

answered Nov 15 at 12:57 alberto 1,428

1

vote

2

answers

43

views

How to post to the blockchain without a third party API like infura

infura external-api devp2p exchange-api

answered Nov 4 at 6:33 Kivutar 36

0

votes

1

answer

36

views

Stack too deep problem

go-ethereum struct constructor stack

answered Oct 22 at 19:59 Niklas Feurstein 2,526

0

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0

answers

71

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Returned error: gas required exceeds allowance (91135865401031) or always failing transaction

solidity go-ethereum private-blockchain gas-limit clients

modified Nov 1 at 15:39 Tanay Bhartia 11

0

votes

2

answers

54

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Solidity: Is there any way to calculate the elapsed time for smart contract?

solidity

modified Nov 13 at 9:14 Rick Park 2,078

0

votes

1

answer

32

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is this the right way to simulate having a negative number?

solidity

modified Nov 4 at 15:00 Adrin 121

0

votes

2

answers

32

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Solidity Warning

solidity

modified Nov 7 at 11:20 CJ42 58

0

votes

3

answers

67

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Gas estimation failed - remix

solidity remix parity gas-estimate poa

modified Nov 13 at 21:36 Yahya 152

1

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2

answers

40

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Emit of boolean returns “null” instead of “false” (Solidity, web3.js)

solidity web3js

answered Nov 8 at 16:39 René K 23

1

vote

1

answer

39

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Are Solidity numbers little endian, or big endian padded left?

solidity

modified Nov 16 at 6:26 goodvibration 8,296

4

votes

2

answers

49

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Prove that a solidity function was executable in the past

solidity proof

modified Nov 5 at 12:10 hilmarx 41

0

votes

3

answers

38

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safe way to allow users to deposit ETH to an address

metamask

modified Oct 23 at 19:09 Jaime 6,350

2

votes

2

answers

37

views

dYdX event log signature hash

events

answered Nov 8 at 21:52 iamdefinitelyahuman 771

0

votes

0

answers

60

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Is there a tool to obfuscate my transactions history by funneling it through a bunch of addresses I control?

transactions privacy history

asked Nov 10 at 16:30 Patoshi パトシ 3,726

1

vote

2

answers

22

views

Why can't I map string with address in solidity?

solidity mapping

answered Nov 13 at 17:32 Rob Hitchens - B9lab 35.6k

1

vote

1

answer

46

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Web3js & Web3.py ERC20 Name, Symbol, & Decimals call(): Results in Web3.exceptions & OverflowError for Some But Not All Existing Contracts

web3js erc-20 web3.py abi

answered Oct 26 at 19:04 iamdefinitelyahuman 771

1

vote

1

answer

46

views

Pass arrays to solidity's function from truffle

solidity truffle remix metamask truffle-contract

answered Oct 30 at 4:50 goodvibration 8,296

1

vote

1

answer

45

views

Does staking on ETH 2.0 require a full node and how much space would that take?

nodes proof-of-stake eth-2.0

answered Oct 23 at 14:16 Lauri Peltonen 9,164

1

vote

1

answer

35

views

tx.origin alternative

solidity

modified Oct 24 at 23:03 Arsalen 15

0

votes

2

answers

34

views

Solidity contract reentry attacked

solidity contract-development transactions contract-design

answered Nov 14 at 11:01 Linmao Song 1,648

1

vote

1

answer

43

views

Error encoding arguments: Error: invalid bytes32 value (arg=“”, coderType=“bytes32”, value=“0x6c”, version=4.0.37) >

solidity remix

answered Oct 30 at 9:09 alberto 1,428

0

votes

1

answer

54

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Web3js - Internal Transaction Data (Event Logs): Token Transfers, Contract Creations, & Internal ETH Transfers

web3js erc-20 events etherscan internal-transactions

modified Oct 27 at 19:36 goodvibration 8,296

0

votes

1

answer

54

views

Why admin.addPeer() command did not add parity client for private chain with Docker?

go-ethereum parity docker

modified Nov 14 at 2:19 kphex 117

0

votes

1

answer

32

views

Can we extend ethereum client or smart contract to use external libraries?

solidity evm

modified Nov 14 at 14:22 Aditya Singh 105

0

votes

1

answer

41

views

Payable external function call not updating state variables

solidity contract-development truffle transactions erc-20

modified Oct 26 at 23:41 Eduardo Gutierrez 3

0

votes

1

answer

41

views

Building a deterministic wallet without random seed phrase instead multiple static inputs

wallets private-key hd-wallets hash-algorithm

answered Oct 27 at 17:01 Molina 233

0

votes

2

answers

41

views

Super simple token with Open Zeppelin

tokens erc-20 openzeppelin openzeppelin-contracts

answered Nov 4 at 7:33 abcoathup 788

1

vote

1

answer

39

views

Generate new address, Send and Get transaction then Check transaction

web3js etherscan nodejs websocket sendtransaction

modified Nov 1 at 23:20 Rémi 1

0

votes

1

answer

38

views

How to use array of arrays with mapping in Solidity

solidity mapping struct

answered yesterday Rob Hitchens - B9lab 35.6k

0

votes

1

answer

48

views

Getting “gas required exceeds allowance (93846700840810) or always failing transaction” on private network. How to access geth client via nodejs?

go-ethereum web3js truffle private-blockchain truffle-migration

modified Oct 28 at 21:42 Molina 233

0

votes

1

answer

48

views

How to hide data and reveal it in a smart contract

privacy zksnark

modified Nov 1 at 22:17 Molina 233

0

votes

1

answer

37

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geth subscribe newHeads not working

go-ethereum websocket

modified Oct 30 at 7:46 Akshay Dev 70

0

votes

1

answer

37

views

Calling contract functions using only ABI without source code

web3js contract-invocation javascript abi bytecode

modified Nov 15 at 11:15 Yahya 152

0

votes

2

answers

22

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Internal contract-to-contract call

solidity ether gas gas-limit gas-price

modified Nov 15 at 10:06 Mikhail Vladimirov 3,209

1

vote

1

answer

36

views

What data is in 'calldataload'?

solidity events evm logs calldata

modified Nov 14 at 9:39 eth♦ 63.5k

0

votes

1

answer

28

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Desired Revert if Condition Is True [closed]

solidity contract-development contract-design remix

modified Oct 30 at 15:22 NowsyMe 904

0

votes

1

answer

46

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smart contract is too smart: different bahaviors of smart contract on different version of geth or solidity

solidity go-ethereum web3js contract-development bug

answered Oct 30 at 17:59 Rob Hitchens - B9lab 35.6k

0

votes

1

answer

27

views

Memory Utilization Pattern Solidity?

solidity go-ethereum contract-development contract-design remix

answered Oct 30 at 17:42 Molina 233

0

votes

1

answer

27

views

How is verification of transformation of raw values done on the blockchain

transactions contract-verification

answered Nov 11 at 16:03 Rob Hitchens - B9lab 35.6k

1

vote

2

answers

44

views

How to know if transaction is failed due to insufficient balance?

go-ethereum web3js

modified Nov 5 at 8:17 goodvibration 8,296

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