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0 votes
2 answers
13 views

Uniswap read contract (klast, getReserves, price0CumulativeLast, price1CumulativeLast)

vgonearth
  • 21
0 votes
0 answers
16 views

How is this scam code transferring tokens to the wallet within the code?

Stychis
  • 1
0 votes
2 answers
19 views

How i can get pair contact price?

vgonearth
  • 21
0 votes
1 answer
11 views

What is the best way to store the private key to sign transactions on web3js

Brijesh Agal
  • 108
1 vote
1 answer
11 views

Reading and listening to Solidity events via Web3.py and websocket

f22daniel
  • 73
0 votes
2 answers
13 views

How to make payable work with custom token

vgonearth
  • 21
1 vote
1 answer
18 views

ERC677 transferAndCall

shankar
  • 101
0 votes
2 answers
20 views

Web3.js Integration not working

vgonearth
  • 21
0 votes
1 answer
22 views

VRFCoordinatorV2Mock's fulfillRandomWords not being called in hardhat local deployment

Shiv Bhonde
  • 11
0 votes
1 answer
14 views

Compiler Error: Stack too deep, try removing local variables

Safi
  • 146
0 votes
2 answers
14 views

Member "store" not found or not visible after argument-dependent lookup in contract

LAYcodes
  • 156
0 votes
1 answer
23 views

Decoding Storage From trace_call (stateDiff)

shankar
  • 101
0 votes
1 answer
17 views

cost fee according to the size of a mapping

LAYcodes
  • 156
0 votes
2 answers
21 views

Solidity - Mint with one contract from another contract

VX3
  • 421
0 votes
0 answers
12 views

transaction reverted with reason string 'ERC20: insufficient allowance' in test

Fede
  • 105
0 votes
1 answer
13 views

etheresjs contract.on filter

vgonearth
  • 21
0 votes
0 answers
14 views

Ganache-UI fails to link with Truffle project

devdanke
  • 161
1 vote
1 answer
20 views

Transaction Service - Indexing past events/safes/transactions

Uxío
  • 376
0 votes
1 answer
12 views

Using delegateCall without knowing the called contract's address

shankar
  • 101
1 vote
1 answer
25 views

Is mev-geth analougue to geth?

VX3
  • 421
0 votes
1 answer
15 views

passing bytes32 to constructor

Foxxxey
  • 2,513
1 vote
2 answers
23 views

Does Hardhat node not support emitting events?

tenbits
  • 669
0 votes
2 answers
24 views

Unkown token in my wallet

Safi
  • 146
0 votes
1 answer
22 views

Testing safeTransferFrom with onlyAllowedOperator using chai/hardhat

0xSanson
  • 1,665
1 vote
3 answers
21 views

How to calculate the gas fees used for deploying a smart contract using hardhat?

tenbits
  • 669
0 votes
3 answers
30 views

Flash loan basics

codewarriorr
  • 136
0 votes
0 answers
22 views

How to send data to a function and sign the transaction without using Metamask

Sohail Ghafoor
  • 1
0 votes
2 answers
27 views

Storing address in a mapping

Safi
  • 146
0 votes
2 answers
22 views

Request flashloan fails: Gas estimation failed: 'execution reverted: 27'. This transaction will likely revert

Rapithwin
  • 1
0 votes
1 answer
24 views

How to trade NFTs on Opensea market with smart contract solidity

VX3
  • 421
1 vote
2 answers
23 views

Difference between provider.sendTransaction vs signer.sendTransaction?

Foxxxey
  • 2,513
0 votes
0 answers
11 views

Is there any cell phone network being run on blockchain?

John Smith
  • 121
1 vote
1 answer
16 views

What are the events that mint new ETH?

VX3
  • 421
0 votes
1 answer
28 views

How we will reduced bytes size of smart contract if limit cross from 24 kib due to functionality

Sohail Ghafoor
  • 1
0 votes
3 answers
27 views

Error: connection not open on send() when trying to connect NodeJs to my Private Geth Node

forexmp45
  • 13
0 votes
0 answers
29 views

Slight MEV ETH transaction

Oleg Petrov
  • 1
0 votes
1 answer
12 views

hardhat fork of private network with zero gas fees still requires a balance to perform a transaction

VX3
  • 421
0 votes
1 answer
14 views

Encode Struct[] in ethers to pass to a dynamic bytes

Ritzy Dev
  • 119
0 votes
1 answer
15 views

Solidity 0.8.0 - explicit type conversion of address to bytes

Catalin
  • 112
0 votes
1 answer
33 views

Restricting minting of an ERC20 token by another smart contract

Rodrigo Burgos
  • 511
1 vote
0 answers
23 views

"execution reverted: ds-math-sub-underflow" when processing swap

Trent Kennelly
  • 31
0 votes
1 answer
26 views

How to Check if an NFT belongs to an address in solidity using only the address of the NFT instead of the tokenId

Nal Luksic
  • 321
0 votes
1 answer
11 views

Does any protocol exist to ZKP query PID (personal information data) and to incentivise the PID data donors?

VX3
  • 421
0 votes
1 answer
19 views

How do get human-readable function definition from ABI in Python?

Foxxxey
  • 2,513
0 votes
1 answer
31 views

How to generate the correct hash for signatures?

rajohs
  • 131
0 votes
0 answers
13 views

Private Ethereum Blockchain Connection with AWS (PoA consensus)

AlexCav
  • 11
0 votes
1 answer
12 views

What is the quote function in UniswapV2Library used for?

kfx
  • 719
0 votes
1 answer
22 views

Why can an address extend an interface with unimplemented function inside? And the function still works!

samuelnihoul
  • 41

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