All Questions
1,602 questions
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1
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5
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Get ETH back from smart contract that was deployed almost a year ago
almost a year ago i fell for a contract scam and Im still confused if I CAN or cannot get the ETH back from it, its still sitting in the contract for almost 300+ days now.
code used in remix that was ...
- 1
0
votes
1
answer
5
views
How to encode tuples when using useSingleContractMultipleData
I'm getting an error:
Error: invalid tuple value (argument="tuple", value="...
- 125
0
votes
0
answers
8
views
Two of my transactions were not completed
Two of my transactions were not completed but I was charged for them. How do I get the fees back? It's around $25.
0
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0
answers
11
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Uniswap/Sushiswap: How to grab/calculate APY?
I am trying to understand if it is possible to use oracles or interfaces that can provide the APY of a specific protocol ERC-20. Essentially, I would like to write a smart contract that allows ...
1
vote
1
answer
23
views
WETH tokens burned after Single Swap
WETH is being sent to 0x000... address automatically after swapping: https://base.blockscout.com/address/0xD73356664dBbD21A9D6B66B3877a7e260D3Ee7f4?tab=token_transfers
I just checked balanceOf on WETH ...
- 31
0
votes
0
answers
23
views
Uniswap onchain quotes for v2, v3, v4
Are there onchain (Solidity) quoters that can quote the token price for both Uniswap v2 and v3?
Needed: give a token path and it can quote a price for a given input token amount. E.g. WETH->USDC, ...
- 23k
0
votes
0
answers
5
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Problems in experience of blockchain splitwise
When I was running code of this splitwise code by using "npx hardhat run --network localhost web_app\script.js",but it answered back with the fault:"cannot find module abiDecoder",...
- 1
0
votes
0
answers
23
views
ERC-20 Token Lookup
I am looking for an ERC-20 token with only the Name (Ticker), but when I search that up on Etherscan I come up with many many options.
Is there any way yo look these up by other criteria such as ...
0
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0
answers
24
views
Failed to quote or execute swaps via universal router or v3 quoter
I am trying to do swaps via a js script, without using any uniswap sdk. I am currently trying to get a quoate via v3quoter, and i stumble across the same error that I get when I try to do swaps via ...
0
votes
2
answers
117
views
Transaction is not going through even when bundle receipt returns 1
I am trying to implement a swap feature in my app where users can swap tokens. It uses Uniswap's SwapRouterV2 to do the swap and it works perfectly. But now I am trying to implement Flashbot into it ...
- 3
0
votes
0
answers
29
views
universalRouter swapping tokens on uniswapV3
im building a simple router and i want to integrate the universal router, I'm able to make V2 swaps, but for some reason swapping tokens on a v3 pool the swap gets reverted
//if msg.value is not empty ...
- 38
0
votes
2
answers
60
views
Why is my transaction showing as 'success' but the value is 0 ETH ($0.00)?
I am new to the bitcoin world and any help would be appreciated.
Transaction hash: 0xfba22d3b6d047bbd81d25dd5d6ef3f070f57f79abeaeb4de49e7dc605ab4cb7c
If I was scammed, is there any way to recuperate ...
0
votes
1
answer
33
views
Uniswap transaction programatically
I am trying to submit a Uniswap transaction without using the Uniswap interface.
I know that I can auto-sign the transaction using my private key programmatically, however I want something different:
...
- 11
1
vote
1
answer
41
views
Why I need an RPC URL to call a view function in Solidity
hello so my question is why I should need a RPC Url while calling a view function
Here is my simple code that is deployed in the localhost anvil testnet and that run successfully and there I did not ...
0
votes
1
answer
66
views
Permit2 Invalid Nonce when running on Hardhat
I'm writing tests for an application that is meant to perform swaps. When running with hardhat as rpc forked with the latest block of mainnet or a pinned block I always encounter this error:
response =...
- 13
0
votes
0
answers
27
views
Web3py and Uniswap issue, transacction reverted
import json
from web3 import Web3
# Set up your connection to Ethereum
infura_url = 'https://sepolia.infura.io/v3/apikey'
web3 = Web3(Web3.HTTPProvider(infura_url))
if not web3.is_connected():
...
0
votes
0
answers
47
views
How to interact with the universal router
I am trying to interact with the Universal Router on the Ethereum Mainnet forking network using Hardhat.js.
This is my code.
describe("Swap test", () => {
const [deployer] = await ...
- 387
0
votes
0
answers
22
views
Swap from Uniswap router
How to pass theese values our execute function - "Function: execute(bytes commands,bytes[] inputs,uint256 deadline)"
0
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0
answers
21
views
Can't add liquidity for invalid current price
Bug Description
If someone added liquidity with one token for out of range price, then, others can't add liquidity later.
In this case later liquidity providers can only add one token and not two ...
0
votes
0
answers
24
views
Logic for calculating fees in UniswapV3
In the computeSwapStep function, can feeAmount = uint256(amountRemaining) - amountIn exceed amount * fee / (1e6 - fee) in the case where sqrtRatioTargetX96 is not reached?
function computeSwapStep(...
- 1
0
votes
0
answers
24
views
How to get timestamp was created NFT Position?
I have a 1 NFT position (Nonfungible Position Manager) and I want get timestamp was created this NFT to convert to age time.
- 16
1
vote
0
answers
54
views
Uniswap v3 Fee Distribution Issue: Unclaimed Fees in Inactive Ranges. Am I missing something?
In Uniswap v3, transaction fees are distributed based on the liquidity provided within specific price ranges. I observed an issue where the fees generated by a swap are divided by the total liquidity ...
- 11
1
vote
1
answer
75
views
Discrepancy between Uniswap V3 liquidity ratio and USD value ratio on uniswap v3
I'm calculating liquidity for a Uniswap V3 pool and have encountered a discrepancy. I'm hoping someone can help me understand what's going on or if I'm making a mistake.
The situation:
I calculated ...
- 11
1
vote
1
answer
41
views
Getting different prices for a token when trying to swap on Uniswap, wallet, others
when the pop up for the swap comes up, it shows the token you are swapping to with a price directly under it. But on the sites page, if you scroll down to the bottom right, you will see where you can ...
- 11
0
votes
1
answer
30
views
What determines the value of an asset in a Uniswap v3 pool if ticks in an active tick interval have zero liquidity?
I'm trying to understand by what mechanism the price is in a tick interval, the border ticks of which, as etherscan shows, have zero liquidity?
Data Gathering
The question arose after analyzing the ...
- 3
0
votes
0
answers
15
views
I got scammed by Robot [duplicate]
There's APP called ETH MINER ROBOT. I withdraw 0.1ETH to my Binance Account and never received it.
- 1
0
votes
0
answers
11
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I got scam from one pretty girl she told me invest USDT up to 5k and earn daily profit, refer this website, "ogfvs.top" ETH-ERC_20 [duplicate]
I got scam from one pretty girl she told me invest USDT up to 5k and earn daily profit, refer this website, "ogfvs.top" ETH-ERC_20 by using this website, and i lost my USDT 4600 recently, ...
- 1
0
votes
0
answers
14
views
Error: VM Exception while processing transaction: reverted with reason string '1inch swap failed'
Error: VM Exception while processing transaction: reverted with reason string '1inch swap failed'this error came when I run 1inch swap functions. swap code as below
IAggregationRouterV6....
- 11
0
votes
0
answers
18
views
Private Node Network-GoEth
i am trying to install private network of three nodes on my single laptop.
i did following:
install go-eth.
used a medium article and followed instructions
when i try to connect nodes with each other,...
0
votes
0
answers
18
views
Webpage not getting connected to mainnet fork
I've been trying to implement a clone of uniswap using the uniswap-v3 sdk. Now to get a quote for the exchange, I tried to get the signer object using the following code
import { ethers } from "...
0
votes
1
answer
18
views
Can someone spend native Ethereum from a signer's address using just a signature?
I'm exploring Ethereum's cryptographic features and wondering if there’s a way for someone to use a signature to spend native Ethereum (ETH) from the signer's address without directly requiring the ...
0
votes
1
answer
68
views
I received ETH meta coinbase says its fake sender says its not?
So I have a coinbase wallet that received ethm. Coinbase support stated that the ethm in the wallet wasn't authentic. How can I prove it is or it isn't. The sender says it's valid, coinbase ...
- 1
0
votes
0
answers
41
views
Uniswap V2 Quoting using reserves - getamountout methods
I have been having abit of issue with quoting on uniswap v2 based exchanges. I am extracting the reserves and using the formula. - univ2_formula = lambda amount_in, in_lq, out_lq: (out_lqamount_in0....
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1
vote
0
answers
55
views
How to solve invalid input params issue for uniswap v2 router 'addLiquidity' method
Can you tell if I am wrong about any of the arguments used for the addLiquidity. I am using wagmi and ethers.
Error
Caused by: InvalidInputRpcError: Missing or invalid parameters.
Double check you ...
1
vote
0
answers
34
views
Uniswap v3 unclaimed rewards calculation is off
I'm creating a statistics app for tracking my positions on uniswap.
As you can see below I have 0.019 unclaimed ETH rewards. However, when I try to reproduce this in my statistics app, I get 0.016 ...
1
vote
2
answers
57
views
Foundry library dependency mismatch
I have a foundry project making a custom dApp.
My dApp is heavily reliant on OpenZeppelin v4.
I recently installed uniswapV3 perifery and core in the project however I keep getting errors:
/lib/...
- 125
0
votes
0
answers
17
views
ETH tokens sent to BNB address in Safe Wallet
Some ETH tokens have been sent to a BNB safe address in Safe Wallet. To recover them I have followed this procedure: https://share.zight.com/z8uBKZYr.
The wallet owner of the Safe Wallet is: ...
- 1
0
votes
1
answer
464
views
Some one make a fake token transfer from my friend wallet without having his PK
Now how is that possible? https://etherscan.io/address/0x781C2EA34506d904573E7E92be19154B729B2EE5#tokentxns
this guy send 65 ETH to an address but some scammers sent 65 ETH token(fake) with his ...
0
votes
1
answer
34
views
Create Deterministic address without create2
I wanna create a deterministic address in solidity without create2 bacause I'm not gonna deploy new contract. How do I do that?
- 61
1
vote
0
answers
42
views
calculating liquidityLockedToken amount for uniswap V3 pool
I tried to analysis pool information and I want to make a result like below.
pools-uniswap
I wrote the code below by referring to the uniswap sdk documentation.
import JSBI from "jsbi";
...
- 111
0
votes
0
answers
35
views
How to custom chain to uniswap interface v3 with swap token?
I encountered an issue when customizing the chain and received the error:
{
"detail": ""tokenInChainId" must be one of [1, 5, 10, 56, 137, 324, 8453, 42161, 42220, 43114, ...
- 16
1
vote
1
answer
85
views
Why are some UniswapV2 Pair addresses non deterministic
According to Uniswap V2 Factory, the pair address of any given pair can be calculated deterministically, as seen in the createPair function:
function createPair(address tokenA, address tokenB) ...
- 428
0
votes
1
answer
30
views
Uniswap Swapping
I have a problem swapping on uniswap. I want to swap token but when I select token I want to swap it says "not enough liquidity". Can anyone help me. It is quite some money in stake. Thanks.
0
votes
1
answer
70
views
How do you get price in UniswapV3?
Seriously I'm on this for like two weeks or more and please help me I'm going crazy. I want to get the price with smart contract not js way that can be handled with sdk I know but How do I do it in my ...
- 61
0
votes
0
answers
93
views
Unable to Withdraw ETH from Smart Contract Bot Due to Insufficient Balance - Any Solutions? [duplicate]
I recently deployed a smart contract bot designed to perform arbitrage on Uniswap. The bot was supposed to start operating once it received a minimum of 1 ETH. Unfortunately, I mistakenly funded the ...
0
votes
0
answers
26
views
Does anyone here used uniswap sepolia?
I want to swap with usdc but dont know how. It says tokens loaded by local storage. How I'm gonna add to it?
BEWARE: The Uniswap interface uses localStorage to remember your settings, such as which ...
- 61
0
votes
0
answers
13
views
I exchanged scam tokens,pls help me [duplicate]
I exchanged ETH for scam coins through BYBITWEB3 on UNISWAP, now they cannot be sold on BYBITWEB3 DEFI (he writes that the contract has closed source code) and when trying to reverse exchange through ...
1
vote
1
answer
23
views
Cant learn any erc20 token price in uniswapv3
How hard can it be to learn the price of an erc20 token in terms of usdc in uniswapv3. a hint: its really hard. Any resource that you know that exactly explains how to get a price of any erc20 token ...
- 61
0
votes
0
answers
54
views
Burn from Uniswap Pool on BUY transaction
I've implemented a smart contract with a burn mechanism triggered after a specific countdown elapsed upon token purchase. Despite successful deployment on the Sepolia testnet and functioning buy/sell ...
0
votes
1
answer
51
views
UNISWAP LIQUIDITY NIGHTMARE
I am trying to create uniswap V3 pool. token0 is always 490_000_000 * 1e18 tokens , token1 is changeable , between 1 -100 WETH ( WETH is also 18 decimals)
function createPool(
address ...
- 1