Hottest Questions This Month

6

votes

1

answer

1k

views

My friend sent me a screenshot of a transaction hash, but when I search for it I find divergent data. What happened?

modified Mar 24 at 20:52 shane 2,452

3

votes

1

answer

265

views

Infinite loop in a view

solidity transactions blockchain dapps

modified Mar 27 at 21:40 Mikhail Vladimirov 1,794

2

votes

1

answer

270

views

Issue with New version of Metamask: Remix cannot detect the Metamask address

remix metamask security accounts privacy

modified Apr 8 at 16:56 shane 2,452

2

votes

1

answer

206

views

CREATE opcode: what does it really do?

opcode create

modified Mar 27 at 20:20 flygoing 7,765

5

votes

0

answers

653

views

Why should I vote and accept answers? [migrated]

voting

modified Apr 19 at 7:32 alok pal 1

1

vote

2

answers

60

views

I found 4 very similar wallet addresses. How is this possible?

addresses etherscan

modified Mar 30 at 12:31 Mikhail Vladimirov 1,794

2

votes

2

answers

177

views

Error while migrating contracts to Ropsten using truffle - Error: legacy access request rate exceeded

solidity truffle ropsten truffle-migration

modified Apr 5 at 15:47 Community♦ 1

0

votes

1

answer

186

views

Metamask address not detected on remix-ide

remix metamask

answered Mar 28 at 10:48 sachin murali 101

4

votes

1

answer

184

views

Error: account unlock with HTTP access is forbidden when unlock an account in Geth console

go-ethereum

modified Apr 9 at 15:01 Artur Iablokov 11

3

votes

2

answers

101

views

Solidity! Invalid implicit conversion from string memory to bytes memory requested

solidity error string bytes data-types

modified Mar 30 at 6:06 Achala Dissanayake 3,797

1

vote

2

answers

77

views

Any good smartcontract for “business calendar” oracles?

oracles calendar

answered Apr 9 at 23:00 GreenSockMonkey 21

1

vote

1

answer

96

views

How to prevent selfdestruct from another contract

solidity contract-development contract-design

answered Apr 13 at 14:50 Rob Hitchens 29.7k

1

vote

1

answer

82

views

How to charge percentage of transaction cost?

solidity web3js contract-development gas gas-limit

modified 8 hours ago shane 2,452

1

vote

1

answer

81

views

forward revert message from low level solidity call

solidity revert-opcode proxy-contracts

answered Apr 1 at 14:31 Mikhail Vladimirov 1,794

5

votes

1

answer

28

views

What is WETH and why can't we just use ETH?

solidity go-ethereum contract-development contract-design

modified Apr 18 at 10:48 tayvano 12.1k

1

vote

1

answer

73

views

Wrapping Cryptocurrencies for interoperability sake

solidity go-ethereum contract-development contract-design tokens

modified Mar 24 at 23:31 savard 94

3

votes

1

answer

49

views

function input conditional check

solidity go-ethereum contract-development contract-design security

modified Mar 30 at 12:22 Mikhail Vladimirov 1,794

1

vote

3

answers

53

views

Do you need to use/learn Solidity to make smart contracts

solidity contract-development contract-design javascript

answered Mar 26 at 15:39 a94 45

1

vote

1

answer

53

views

Deploy new contract through another contract function in Truffle

truffle dapp-development testing truffle-migration truffle-deployment

modified Apr 18 at 2:36 BIGCRYPTO001 1

3

votes

1

answer

63

views

Calling contract method internally from geth code

go-ethereum golang project-fork

modified Mar 29 at 9:40 Juan Ignacio Pérez Sacristán 1,221

4

votes

2

answers

80

views

How to encrypt a file with multiple public address?

solidity private-key ipfs public-key encryption

answered Mar 30 at 13:55 kherwa 549

1

vote

2

answers

102

views

Why remix account is empty when select “Injected Web3”? [closed]

remix

modified Apr 8 at 16:57 Daniel Portugal 53

1

vote

0

answers

100

views

Zepplin Proxy Code Pattern

solidity remix proxy-contracts

modified Apr 14 at 1:44 stud91 56

2

votes

2

answers

28

views

Does the ETH blockchain have fundamentally more branching than BTC?

proof-of-work forks uncle-blocks

answered Apr 4 at 9:37 Richard Horrocks 22.7k

1

vote

1

answer

75

views

Solidity 0.5.2 - OpenZeppelin - New SafeERC20 callOptionalReturn(token,data)

erc-20 abi erc-223 open-zeppelin solidity-0.5.0

modified Apr 4 at 13:21 Liberalite 62

1

vote

2

answers

43

views

Quorum blockchain transactions visibility

quorum

answered Mar 26 at 19:22 fixanoid 894

0

votes

1

answer

81

views

Deploying and calling a contract works only with Ganache (not with Geth)

go-ethereum contract-invocation

modified Mar 25 at 8:00 Bogdan 1

1

vote

1

answer

81

views

could not be able to change my setmessage because (Transaction has been reverted by the EVM:

solidity blockchain

modified Mar 25 at 10:24 Mikhail Vladimirov 1,794

1

vote

3

answers

37

views

Ether for learning ethereum

ether testnets legal

modified Mar 28 at 20:13 MSwezey 955

0

votes

2

answers

36

views

How do I monitor 50k addresses for incoming ERC20 transactions?

transactions events nodes rpc

modified Apr 18 at 20:12 Thorkil Værge 2,350

0

votes

0

answers

74

views

msg.sender.transfer(rewardUnit) causes a revert exception

solidity remix

modified Apr 4 at 10:20 Mikhail Vladimirov 1,794

0

votes

1

answer

27

views

Understand the functionality of one contract

the-dao dao thedao-refund

answered Apr 1 at 15:37 Mikhail Vladimirov 1,794

0

votes

1

answer

72

views

Why am I Getting: Transaction Error. Exception thrown in contract code in Real?

metamask error

answered 2 days ago Ismael 15.9k

2

votes

3

answers

34

views

Should I use require in view functions?

solidity struct require view

answered Apr 3 at 18:13 Rob Hitchens 29.7k

3

votes

0

answers

68

views

VM revert on Scalar Multiplication in pre-compiled contracts

solidity go-ethereum precompiled-contracts elliptic

asked Apr 8 at 5:27 Alex Xiong 36

1

vote

1

answer

67

views

Promise not resolved for web3eth.sendSignedTransaction

web3js infura sendrawtransaction

answered Apr 15 at 12:48 Danilo 1

0

votes

2

answers

39

views

Why does fallback cause exception when expecting return value?

solidity fallback-function returndata returndatasize

answered Mar 31 at 17:46 Rob Hitchens 29.7k

0

votes

0

answers

64

views

Warning: The compiled contract might be susceptible to ABIEncoderV2PackedStorage (low-severity) Solidity Compiler Bugs

etherscan compiler

modified Mar 27 at 7:15 Yogesh - EtherAuthority.io 122

1

vote

2

answers

30

views

find out network using contract address

contract-deployment addresses

modified Mar 28 at 13:27 rohit_sethi 58

1

vote

3

answers

49

views

How much does it cost to develop and run dApp on Ethereum or Hyperledger fabric?

blockchain dapps hyperledger-fabric

answered Apr 14 at 19:12 Cryptnitekid 11

3

votes

1

answer

38

views

How do I extract the v, r, s values from a signed transaction

signature

answered Apr 11 at 3:54 Thorkil Værge 2,350

0

votes

2

answers

29

views

Rejecting oraclize scheduled request [closed]

solidity oracles scheduling

answered Mar 27 at 18:42 Ismael 15.9k

1

vote

1

answer

37

views

List of Stablecoins built on Ethereum

solidity go-ethereum contract-design tokens stablecoins

modified Mar 24 at 18:26 Richard Horrocks 22.7k

0

votes

1

answer

60

views

Simple contract, but got this, Transaction has been reverted by the EVM

web3js

modified Mar 28 at 9:58 sruthi23 108

0

votes

1

answer

59

views

Uploading files on IPFS Infura

go-ethereum dapps infura ipfs

answered Apr 3 at 4:36 rshah 121

1

vote

1

answer

58

views

Cannot deploy contract

web3js ganache solc web3js-v1.x solcjs

answered Mar 26 at 9:46 Mikhail Vladimirov 1,794

2

votes

1

answer

45

views

Calling payable state changing function on client side with metamask in ethereum infura testnet

web3js transactions infura ganache react

modified Mar 26 at 16:24 shane 2,452

0

votes

2

answers

27

views

How the “data” field of transaction is saved in the Ethereum blockchain? [closed]

transactions blockchain message immutability

answered Apr 4 at 16:59 Ismael 15.9k

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