Hottest Questions This Month

3

votes

2

answers

198

views

Gas refunds via “Self-destruct” prior to a revert()

modified Sep 6 at 8:10 eth♦ 67.1k

2

votes

1

answer

466

views

Fast way of checking if my ethereum addresses can claim UNI tokens from uniswap? [closed]

metamask uniswap uni

modified Sep 20 at 13:30 T M 16

3

votes

1

answer

215

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How much UNI can I earn if I become a liquidity provider?

uniswap usdc uni liquidity-provider

answered Sep 18 at 12:32 Jeffrey Lee 36

4

votes

0

answers

219

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+50

SushiSwap - Inner workings?

solidity defi

modified 2 days ago Liberalite 87

2

votes

1

answer

101

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i am new to this, can someone steal my erc20 token with the Function approve()

tokens erc-20 metamask etherscan erc-20-approve

modified Sep 2 at 19:36 Shane Fontaine 6,689

4

votes

1

answer

99

views

Chainlink import causing Truffle console to crash

solidity truffle openzeppelin chainlink safemath

modified Sep 4 at 12:42 Giuseppe Bertone 2,881

0

votes

1

answer

156

views

Transaction dropped and replaced but still shows as pending in etherscan

transactions metamask pending-transactions

modified Sep 17 at 8:58 san 1

2

votes

4

answers

82

views

Why are lending rates on USD based stable coins so different?

dai stablecoins usdt defi

modified Sep 14 at 17:26 clement 688

1

vote

1

answer

81

views

How to get a token pair's uniswap trade history?

javascript uniswap

answered Sep 9 at 7:00 Markus - soliditydeveloper.com 1,247

2

votes

0

answers

104

views

Frontrunning Uniswap horror story transactions

security attacks uniswap frontrunning

asked Aug 29 at 11:01 eth♦ 67.1k

0

votes

2

answers

49

views

How to get transaction hash without waiting for await call?

transactions ropsten hash async sendsignedtransaction

modified Sep 17 at 11:25 alfo888_ibg 155

1

vote

2

answers

46

views

Multi-signature contract with offline signing

contract-development contract-design contract-invocation signature multisignature

modified 8 hours ago Shane Fontaine 6,689

0

votes

2

answers

45

views

Does ASIC miner works in ETH and ETC

mining ethereum-classic solo-mining powhash

modified Sep 15 at 17:23 Lauri Peltonen 12.4k

1

vote

1

answer

80

views

How to get contract object using ABI json and address with web3j?

json-rpc web3j abi

answered Sep 15 at 7:55 Alexander_K 11

1

vote

1

answer

48

views

Why would someone have a fallback function for ^0.6.0?

solidity fallback-function

modified Sep 21 at 17:51 Lauri Peltonen 12.4k

0

votes

1

answer

37

views

How to construct a raw Ethereum transaction from transaction data

web3js json-rpc web3.py raw-transaction ethersjs

modified Sep 8 at 20:15 Morten 1,671

2

votes

1

answer

37

views

Fork in Proof-of-Stake?

proof-of-stake forks

modified Sep 18 at 11:27 Questioner 2,189

0

votes

2

answers

36

views

how to check if bytes32 begins with certain bytes?

solidity

answered Sep 22 at 23:46 Ismael 21.9k

0

votes

1

answer

74

views

How do I count the elements of an array in solidity?

solidity contract-development remix contract-design pyethereum

answered Aug 31 at 16:53 Glauco C. 46

0

votes

1

answer

54

views

ETH Transaction Stuck in FAILED Status

failed-transaction

answered Sep 11 at 18:17 leftarmer 11

1

vote

1

answer

50

views

How to fix Solidity version missmatch from Visual Studio Code

solidity visual-studio-code

modified Sep 16 at 4:47 dexcell 126

1

vote

1

answer

38

views

Deploy pre compiled bytecode using truffle migrations deployer api

truffle bytecode uniswap

answered Sep 16 at 14:38 Darren Jensen 141

1

vote

1

answer

48

views

How to calculate the number of tokens owned by the liquidity pool via bonding curve on Uniswap?

tokens uniswap bonding-curves

answered Sep 14 at 7:12 Mikko Ohtamaa 11.4k

0

votes

1

answer

37

views

“Dropped & Replaced” tx - what should I do?

gas failed-transaction usdt

answered Sep 5 at 9:42 clement 688

1

vote

2

answers

37

views

Should I use an average or median price for my oracle?

oracles compound-open-oracle

answered Sep 14 at 14:29 goodvibration 16k

1

vote

2

answers

36

views

Getter function for public variables

solidity state-variable

answered Sep 14 at 14:28 goodvibration 16k

0

votes

0

answers

58

views

Error! Unable to locate Contract Code at 0x6… Is this a valid Contract Address?

etherscan

modified Sep 10 at 14:22 Wannadi Caribe 1

2

votes

1

answer

42

views

Is there any way to do dry run a smart contract on Ethereum Mainnet?

go-ethereum contract-development openethereum

modified Sep 7 at 10:31 Melvin A. Tirado 23

0

votes

1

answer

32

views

how to read smart contract A's data from other smart contract B in ethereum?

contract-development contract-invocation

answered Sep 1 at 14:12 Morten 1,671

0

votes

1

answer

41

views

Ethereum Difficulty Formula

difficulty difficulty-bomb

modified Sep 8 at 12:35 clement 688

0

votes

1

answer

40

views

Fees are too Damn High to send $20 worth of USDC. How can one minimize these fees?

transactions gas gas-limit gas-price

modified Sep 3 at 17:18 clement 688

2

votes

1

answer

39

views

Is there a way to verify transactions afterwards they are entered in the ethereum blockchain?

web3js contract-development transactions security ethereumjs

modified Sep 15 at 16:38 Shane Fontaine 6,689

1

vote

0

answers

50

views

Subscribe to new txpool transactions on geth node

go-ethereum txpool

modified Aug 31 at 10:32 sebastian 111

0

votes

1

answer

50

views

Error: Returned error: invalid opcode: SHR

go-ethereum

answered Sep 7 at 9:35 Prasanna Desai 1

0

votes

1

answer

48

views

“out of gas” when trying to send back ETH from a contract to tx.origin

solidity contract-development transactions out-of-gas solidity-0.7.x

modified Sep 16 at 16:08 Markus Kottländer 167

0

votes

2

answers

48

views

Can we enter our private key for decrypting a message in the react (frontend) part of a dapp?

ipfs

answered Sep 24 at 16:43 The Renaissance 382

2

votes

1

answer

29

views

How to read partial values from a tuple?

solidity

answered Sep 7 at 15:57 Paul Razvan Berg 4,535

1

vote

0

answers

47

views

How to call the super contract function where msg.sender should be same in solidity?

abi solidity-0.5.x keccak delegatecall

modified Sep 1 at 20:46 jiswok 11

0

votes

1

answer

35

views

In Solidity how to use unnamed function parameters?

solidity

answered Sep 16 at 15:10 Morten 1,671

0

votes

1

answer

27

views

Uniswap V2 Contract question: Stack too deep

solidity uniswap

modified 2 days ago goodvibration 16k

0

votes

0

answers

44

views

Verifying contract always returns true

zero-knowledge zokrates

modified Sep 1 at 6:45 Vishnu Prakash 18

0

votes

1

answer

44

views

How to verify transactions on ethereum blockchain?

contract-development transactions contract-deployment

answered Sep 5 at 19:59 Ismael 21.9k

0

votes

1

answer

44

views

Minereum Lucky Draw claims 100% Safe randomness on a smart contract without oracles, is it really possible? [duplicate]

solidity dapps randomness chainlink random

modified Sep 20 at 19:29 Resten 403

2

votes

2

answers

34

views

Is Chainlink's price reference data free to consume?

oracles chainlink

answered Sep 15 at 13:59 Patrick Collins 726

0

votes

2

answers

43

views

Accept USDT (Tether) for payment method in website

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answered Sep 14 at 16:46 Merunas Grincalaitis 235

2

votes

1

answer

26

views

What is the difference between Ethereum 2.0 and the beacon chain?

eth-2.0 beacon-chain

answered Sep 6 at 9:12 eth♦ 67.1k

0

votes

1

answer

33

views

Remix: gas required exceeds allowance when calling IERC20 transferFrom

solidity remix erc-20

answered Sep 2 at 23:48 Morten 1,671

0

votes

2

answers

33

views

Stuck ETH in Smart Contract

erc-20 contract-deployment contract-debugging

answered Aug 30 at 2:53 Ismael 21.9k

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