Hottest Questions This Month

3

votes

3

answers

2k

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Metamask - "Params specify an EIP-1559 transaction but the current network does not support EIP-1559"

modified Sep 16 at 8:41 Garry Goodspeed 1

2

votes

1

answer

628

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Is it safe to use private key in this code

web3js erc-20

answered Sep 13 at 21:28 Nicolas Massart 6,139

2

votes

0

answers

445

views

Gas Fees for 10k NFT

gas nft

asked Aug 31 at 15:19 Edalgo 21

1

vote

1

answer

119

views

Can someone sign a transaction and have someone else broadcast it and pay the transaction fees?

transactions gas signature msg.sender

answered Sep 19 at 5:17 pwagner 530

2

votes

1

answer

140

views

When is code executed from a different account than the recipient?

yellow-paper

modified Sep 6 at 14:27 Ari Fordsham 121

3

votes

2

answers

79

views

Why do we grant access to our funds instead of just sending them to the smart contract?

solidity contract-development contract-design erc-20 defi

answered Sep 18 at 13:35 Paul Razvan Berg 8,647

1

vote

1

answer

198

views

Error "Invalid transaction envelope type: specified type" while deploying a smart contract through MyEtherWallet

contract-deployment

modified Aug 29 at 1:04 Ismael♦ 27.8k

1

vote

1

answer

236

views

Error encoding arguments: invalid BigNumber string after deploying to Remix

solidity remix mapping struct bignumber

answered Sep 6 at 14:32 ginwei 31

4

votes

2

answers

64

views

Why does Solidity never free memory?

solidity memory

answered Sep 5 at 19:32 cameel 406

1

vote

2

answers

46

views

Interacting with closed source contract

solidity bytecode

modified Sep 17 at 11:07 Fried Rice 113

0

votes

0

answers

159

views

Game architecture, Plants vs Undead, LE to PVU

bsc games

asked Sep 2 at 13:13 redigaffi 163

3

votes

0

answers

154

views

How to handle Ropsten's chain split with geth 1.10.8

go-ethereum ropsten

asked Aug 30 at 9:12 takatoshi 31

1

vote

1

answer

118

views

Lazy minting contract - How to deal with unique (off-chain) metadata

solidity tokens nft mint

answered Aug 28 at 17:02 apoorvlathey 125

1

vote

3

answers

115

views

having a problem with solc-x version "solc 0.6.0 has not been installed"

solidity contract-deployment python solc py-solc-x

answered 6 hours ago Khan 101

1

vote

1

answer

104

views

Error occurring while trying to swap tokens in Uniswap v3

web3js transactions ether uniswap hardhat

answered Aug 30 at 15:21 Connor Martin - Uniswap Labs 134

0

votes

2

answers

133

views

How to approve swapExactTokensForETH from UniSwapRouter V2, before invoking it?

web3js metamask uniswap

answered Aug 28 at 17:11 apoorvlathey 125

3

votes

2

answers

38

views

+50

How to "export table" - save state of ethereum smart contract from ETH blockchain?

export

answered Sep 22 at 8:11 Afr 29.9k

0

votes

2

answers

132

views

router.WETH() causing "Error: Transaction reverted without a reason string"

solidity remix uniswap

answered Sep 5 at 14:22 rion 1

0

votes

1

answer

76

views

How to send a signed transaction using metamask and web3?

solidity web3js metamask ropsten infura

answered Aug 29 at 11:00 Bigbrotha 491

0

votes

0

answers

124

views

How to get NFT data with web3 or etherscan api?

web3js etherscan python

asked Aug 29 at 5:38 Chipe 209

2

votes

1

answer

75

views

MetaMask (Web3) Inflates Transaction/Mint Price to Ridiculous Amount

solidity web3js truffle metamask drizzle

answered Sep 3 at 9:12 Nils Garland 41

3

votes

1

answer

92

views

ERC721 Metadata - TokenURI - Return the full JSON String Instead of URL Pointer?

solidity nft opensea meta-data

answered Sep 18 at 7:51 pwagner 530

1

vote

2

answers

64

views

how to override the `to` field of a contract deployment init transaction?

transactions hardhat ethersjs hardhat-deploy

modified Sep 14 at 17:22 Surbhi Audichya 73

7

votes

0

answers

80

views

How does estimation of gas price changes after implementation of EIP-1559

web3js eip-1559

modified Aug 30 at 20:16 Morten 4,038

0

votes

1

answer

61

views

How to calculate price impact on 0x API

0x dex

answered Sep 1 at 20:27 Lawrence Forman 96

0

votes

0

answers

99

views

How to program an NFT with multiple layers?

solidity tokens erc-721 nft async

modified Aug 31 at 6:45 scranley 101

0

votes

1

answer

99

views

How to store a javascript animation as NFT

javascript nft ipfs

answered Sep 4 at 4:37 dd0sxx 15

1

vote

1

answer

57

views

Re-engineered ERC-20 standard?

erc-20

answered Sep 18 at 19:13 Morten 4,038

0

votes

1

answer

93

views

Enormous suggested fees on metamask after the EIP-1559

web3js metamask gas react london

answered Sep 23 at 16:13 Kaneda 125

0

votes

1

answer

72

views

Is possible to prevent front-running using own contract to do swaps in Uniswap?

solidity uniswap frontrunning

answered Sep 7 at 16:03 Lauri Peltonen 19.3k

1

vote

1

answer

56

views

Storing immutable state in contract data

gas evm assembly bytecode create

answered Sep 3 at 0:29 K. Fichter 521

0

votes

1

answer

62

views

What happens if maxPriorityFeePerGas and maxFeePerGas are set to same value?

transactions gas ethers.js eip-1559

answered Sep 12 at 11:43 Morten 4,038

1

vote

1

answer

48

views

0x API Help: Order Routing

0x

answered Sep 2 at 13:32 Megan 51

2

votes

2

answers

48

views

Testing an event with a timestamp arg

solidity testing hardhat

answered 2 days ago Sloth Man 301

2

votes

0

answers

79

views

How to use a placeholder image during minting, and then only updating metadata with the actual URI after minting?

erc-721 nft ipfs smart-contract-wallets opensea

asked Aug 31 at 10:30 Welpers 21

0

votes

1

answer

78

views

How to integrate EIP-2981 with this basic ERC-721 contract

solidity remix

modified Sep 15 at 13:34 scottsuhy 1

1

vote

1

answer

46

views

Private keys & not buffer being passed to test file

solidity truffle-test hardhat

answered Sep 17 at 14:52 Chris 36

1

vote

1

answer

59

views

Gas fee limit issue when deploying smart contract to Optimistic Ethereum

remix gas-limit

answered Sep 13 at 12:13 Tony Chen 111

0

votes

1

answer

75

views

BEP-20 - how to add Tax fees when token is transfer?

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modified Sep 21 at 5:35 trizin 443

0

votes

1

answer

45

views

Scam where unsolicited airdrop NFTs, if sold, empties victim's wallet

wallets security nft smart-contract-wallets opensea

modified Sep 21 at 18:57 Matteo Franchini 1

1

vote

0

answers

74

views

What is the right function to use to list NFT collection with a fixed price?

solidity remix nft price opensea

asked Sep 6 at 5:00 Vignesh Ramasamy 11

1

vote

1

answer

74

views

Swap problem with big amounts (PancakeSwap liquidity)

0x

answered Sep 10 at 14:27 Megan 51

0

votes

0

answers

73

views

WalletConnect on frontend not working

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asked Sep 2 at 20:14 GrindCode 192

0

votes

1

answer

71

views

API Key isn't UUID compliant Error

0x

modified Sep 9 at 9:34 xKarma 1

0

votes

1

answer

54

views

0x exchange v3 debugging (execution reverted, more details inside)

contract-deployment signature decentralized-exchange 0x dapp-debugging

modified Sep 17 at 16:30 Lawrence Forman 96

0

votes

0

answers

69

views

1inch swap contract error (callBytes failed)

polygon

modified Sep 13 at 6:39 tomapplause 1

0

votes

1

answer

67

views

Speeding up transaction failed, and I may have locked my account up

opensea

answered Sep 2 at 22:40 thatguyintech 1

0

votes

0

answers

66

views

Locally test Chainlink VRF call from another contract in Waffle/Hardhat

testing chainlink hardhat unittesting hardhat-deploy

modified Sep 14 at 18:26 a.t. 3

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