Questions tagged [pending-transactions]

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29 views

Geth receiving pending transactions without full sync

I would like to continue to solve this problem here: How to configure Geth for accepting future transactions without full sync? For statistical purposes I will need to remove the validation process. ...
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21 views

What factors exactly affect the speed, depth and range of scanning the mempool?

There is zero quality information available on that topic anywhere, for obvious reasons. If there is however somebody willing to share, whether from experience or purely technical understanding of all ...
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1answer
18 views

Is there a way to add a time specific delay to transactions in your smart contract?

We're working on a smart contract in which certain transactions are executed every time a certain token price point is crossed. Therefore, if in a given instant the price crosses a set point more than ...
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50 views

TxPool size on public BSC node

Something happened to BSC public node(https://bsc-dataseed.binance.org/), and I am confused. I usually call this BSC public node to get block transactions and content of txpool. Average number of ...
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Pending transaction since 5 days and connection 3 years since last blok

I made an ethereum transfer between two accounts but the transaction is pending since the last 5 days and I read connection "3 years since last bloc" on the top of the wallet. Please can you ...
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1answer
38 views

how to deal with hundreds of transactions are going into pending

I am trying to create a simple bot for sending transactions. what it does is that it sends multiple in successions with the same data but different nonce and a bit more gasPrice each time. In theory ...
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2answers
85 views

Pending transactions are incomplete

I have written a simple web.js program to monitor the pending transactions on the BSC chain and output the tx hash on the console. I want to monitor a specific token, but right now I am outputting ...
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1answer
59 views

How to get pendingTransactions for a specific tokenId on ERC-721 contract (NFTs)

I want to block users from performing certain actions on my platform when the NFT token they own is under an active transaction i.e., pending transaction. The reason is simple because we don't know ...
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61 views

How do I send test Eth from one EOA to another on the Rinkeby testnet using Infura?

I am trying to check if I am able to send one test ether from one Wallet (Wallet 2) to another Wallet (Wallet 1) using JavaScript. I tried to do this using the codes below but for some reason, this is ...
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1answer
285 views

How do you resolve and end pending transaction checks in ethers.js?

I have the following code scanning the pending transaction pool until my wallet is found: var scanTxPool = async () => { var myWallet = '0x0000000000000000000000000000000000000000'; var ...
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66 views

Web3 Does contract call on pending block actually does something?

I have created a simple contract to increment a number and a .js script to call the contract. I run the .js script then I submit the incrementNumber function with remix IDE. I'm using the pending ...
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1answer
32 views

Stuck transaction after sent a "self" transaction

I tried to buy an item on OpenSea, with low gas. Since the transaction was stuck, I sent an "self" transaction: 0 ETH and higher gas fee, and same nonce: https://etherscan.io/tx/...
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How to check if ETH transaction was ever sent

I'm creating a transaction with web3.eth.accounts.signTransaction. I'm then storing that transaction hash, then sending it over the ETH network with web3.eth.sendSignedTransaction How do I ...
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1answer
48 views

Why aren't my transactions sometimes getting to the mempool?

I am using web3 and an infura node to broadcast transactions. let result = await web3.eth.sendTransaction({ to:receiveAddress, from:web3.eth.defaultAccount, value:...
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27 views

web3SendInstance.eth.sendTransaction returning txhash but transactions get lost

I am using web3.eth.sendTransaction to try and send Ether from one address to another let result = await web3SendInstance.eth.sendTransaction({to:receiveAddress, from:web3.eth.defaultAccount, ...
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11 views

How can we listen failed transaction for ethereum and erc20 tokens using web3j and if any api available on etherscan

How can we listen failed transaction for ethereum and erc20 tokens using web3j and if any api available on etherscan
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1answer
53 views

How to know if a transaction gets dropped and txhash becomes irrelevant before its mined

I am using a web3 sendTransaction function to send coins, and then storing the transactionHash in my databse await web3SendInstance.eth.sendTransaction({to:receiveAddress, from:web3.eth.defaultAccount,...
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11 views

Why are raw transactions not verified fully on the submitted to node?

When you send a signed transaction to a node through its RPC, it gets added to the transaction pool without being fully verified (e.g. geth @ https://github.com/ethereum/go-ethereum/blob/...
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347 views

How to get all pending transactions using web3js

I am working on custom blockchain testnet. I wanna see all pending transactions on my local block explorer. To do this I first tried with web3.eth.getPendingTransactions() but it always returned ...
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2answers
29 views

What does "from" stand for in a pending transaction on ethereum?

As you may see on this link of pending transactions https://etherscan.io/txsPending You may see that there is a list of pending transactions. If you select one of them you will see the following ...
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1answer
42 views

Are the tx signed then RLP encoded then hashed to be transmitted to the blockchain for miners to mine?

Using the discussion of this link: https://ethereum.org/en/developers/docs/transactions/ It seems obvious that before the transaction is transmitted over the blockchain for miners to mine, the ...
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75 views

How to overwrite expensive transaction?

I accidentally did a expensive contract creation txn with 1.100$ as max txn fees but only 45Gwei and now i wan't to overwrite it. Details: Max Txn Cost/Fee: 0.302488875 Ether ($1,119.21) Gas Price: ...
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1answer
136 views

Cancelling truffle migrate to mainnet. With previous pending transactions that have low gas prices

I am exporting my smart contract to the Ethereum mainnet and I am using Truffle to export my smart contract. However when deploying I was trying out multiple parameters and as a result have 11 ...
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1answer
95 views

Transactions lifetime in mempool (EIP 1559)

I want to know how long transactions will be kept in mempool after EIP 1559. I know that before EIP 1559 they kept very, very long. How long certainly I don't know.
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2answers
165 views

I set a 3 gwei for gas price. Now my transaction has been pending for 48+ hours now. But blocks aren't even full!

I tried to set a gas price of 3 gwei for interacting with a smart contract. Now the transaction is pending for 48+ hours. If the blocks aren't full, why dont the miners pick it up? I can bump the fee ...
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0answers
32 views

I have a bunch of queued transactions on Rinkeby testnet. How do I get rid of them?

I've been playing around with https://ethernaut.openzeppelin.com/ using Metamask and there are times where I've left my tab of the site up for days and sending transactions no longer works with the ...
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2answers
543 views

Trying to replace eth tx: replacement transaction underpriced

I recently sent a tx with nonce=0 and 20Gwei per gas fee. Now since the gas price never dropped so low, my tx is stuck for days. I don't care about the stuck tx, but I want to send another tx from the ...
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0answers
58 views

Is there any trick (besides high gas fee) to get transactions included in the next Polygon block?

I recognize some arbitrage opportunities on the Polygon network and tend to include my transactions in the next block. Since Polygon's transaction time is too low, I know that I have to do it quickly ...
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100 views

How can I stream pending transactions (ideally including transaction details) of a specific contract with web3.py?

This link seems to answer a very similar question, but it is for web3.js and doesn't return transaction details: How to get a pending filter only for a contract Thanks
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268 views

Can I send the money to Metamask while it has a pending transaction?

I have a pending transaction when I withdraw some Eth from Ronin to my Metamask. However, because in my Metamask, I don't have enough ETH left, so I config the gas fee a bit low, and as a result, my ...
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1answer
490 views

deadline expired long ago, but the transaction is still pending

I made a transaction on uniswap, with code like: const provider = ethers.getDefaultProvider('mainnet', { infura: INFURA_ID }) const signer = new ethers.Wallet(MY_WALLET_PRIVATE_KEY) const account ...
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0answers
66 views

What type of node for trading bot? local node? archive node?

I developed a trading bot, but I'm having issues ascertaining what type of node would be best for my bot to be ultra competitive on the block chain. I've read about local nodes, archive nodes, buying ...
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95 views

How can I set timeout limit for my pending transactions in the transaction pool?

Sometimes when I send transactions to some of my providers (using web3.js), they keep them pending on their pool (maybe in a queue) for a while before really processing them and including transactions ...
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0answers
27 views

What causes different transaction count in `pending` block and `confirmed` block

As seen in the screenshot, I'm getting a different number of transactions when I fetch the pending block compared to when I fetch an actual block. I learned that private transactions doesn't appear in ...
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1answer
178 views

Have gas fees the same usage on Polygon/Matic as Ethereum?

I've noticed that recently, Polygon blockchain becomes too slow at specific hours of the day. My transactions getting queued for several hours and then only some of them being sent to the blockchain (...
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79 views

Query a uncofirmed transaction using web3.py

I am trying to catch transactions before they get inserted into a block. I am currently subscribing to the pending transactions via websocket and so I have all hashes of the new transactions. Now if I ...
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0answers
142 views

Transaction pending in Remix IDE when trying to pass an array

This is the contract I have tried to implement. // SPDX-License-Identifier: MIT pragma solidity >=0.4.22 <0.9.0; contract Vaccination { uint[] public lengths; function getSize(uint[] ...
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21 views

What is the reason that stops action below?

I was reading many pending transactions. Suddenly this action was stopped. This is my code. provider.on("pending", (tx) => { console.log("hash: " + tx.hash); ...
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0answers
122 views

How to get all pending transactions

I want to use my open-ethereum node to get all the pending transactions. How can I do it? The eth_getBlockByNumber API returns only about a hundred and according to Etherscan there are 150,000 pending ...
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136 views

Is there any way to subscribe to newPendingTransactions for PanCakeSwap with includeTransactions flag?

I'm attempting to realtime-monitor PanCakeSwap swaps (so BSC blockchain). I found this doc page: https://besu.hyperledger.org/en/stable/HowTo/Interact/APIs/RPC-PubSub/ It cites an example: {"id&...
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1answer
1k views

How to get a pending transaction? I am using python with web3py

I am using the URL "https://mainnet.infura.io/v3/key". But I can't get a pending transaction. This is my code. pendingTransaction = web3.eth.filter('pending') I had an error like this. The ...
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1answer
133 views

txpool.content return empty object

I opened a full node successfully (I succeed getting data from e.g eth_getTransactionByHash). I'm trying to get all pending transactions, but I get: > txpool.content { pending: {}, queued: {} } ...
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1answer
294 views

Is there a way to learn interacting with the mempool without having to run a full node?

this link mentions grabbing a free endpoint from quicknode: https://www.quicknode.com/guides/web3-sdks/estimating-gas-price-using-pending-transactions-in-python I followed the link and made an account ...
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1answer
674 views

How to bypass mempool

I always see a mark on etherscan called "Private Transaction - this tx bypassed the mempool." What is happening there and how does it work?
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0answers
81 views

Is there a way to filter pending txs?

I wrote a script to track unconfirmed transactions in the mempool, but my script is always triggered by txs, that are too long pending for like many hours or days because of not enough gas that was ...
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2answers
57 views

Geth is not emitting pending transactons

I am connected to two nodes, mine and external. The external one emits pending transactions mine does not. I started geth full node (after downloading a snapshot of the network). After 24h using eth....
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1answer
1k views

Proxy contract to avoid sniping bot

I am working on a trading bot with ethers.js and I would love if someone could elaborate on the following topic. Many sniping bots try to buy as fast as liquidity is added to the pool. This can be ...
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1answer
116 views

Obtain transaction hash from event (ethersjs)

My goal is to detect a contract invocation as fast as humanly possible. To do this I am processing all the pending transactions I have access to (via provider.on("pending", async (tx) => {...
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1answer
304 views

How to send a replacement transaction with a higher gas price?

I am sending a transaction with sendSignedTransaction : const tx = new Tx({ ... "gasPrice": web3.utils.toHex(41 * 1e9), ... } await web3.eth.sendSignedTransaction(serializedTx) ....
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3answers
2k views

Understanding front running. Why did my transaction fail? (PancakeSwap V2)

I am doing some research on front running transactions. My goal is to purchase a token in PancakeSwap in the same block that liquidity is added. Lets take this token as an example: https://bscscan.com/...

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