Questions tagged [pending-transactions]

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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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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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Reasons for a geth node to not receive a pending transaction?

I have a geth node and I have noticed that a pending transaction was not picked up by my node. I was wondering what could be the reason. I was thinking it could come from: Geth node settings I saw ...
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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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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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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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44 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
40 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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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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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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1answer
145 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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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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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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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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166 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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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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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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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
132 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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50 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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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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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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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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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
537 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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87 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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194 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
387 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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63 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
46 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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777 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
70 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
164 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
850 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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Binance node - number of pending and queued transactions differs in local node and from binance.org

System information Geth version: geth version 1.10.1-stable-c2d2f4ed OS & Version: Windows/Linux/OSX Linux Expected behaviour Get pending transactions from local binance node, match the result I ...
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65 views

What comes first: pendingTransactions, logs, newBlockHeaders?

I am trying to understand the order in which the data propagates. My understanding at the moment is: Assuming someone just made sendTransaction call, then... First we would receive ...
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65 views

NFT wallet transfer pending on ETH but succeeded on Matic?

Wondering if anyone can advise me on the below... I transferred inventory from my Matic wallet to my Ethereum wallet on Arkane Network. There were two separate NFT's and the Matic transaction history ...
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1answer
82 views

Several pending transactions to the same address - what happens?

I am trying to sell all my Shiba tokens from my Coinbase wallet (to Ethereum). I tried converting it through Uniswap, but nothing seemed to happen. So I did it again. And then through Sushiswap. I ...
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openethereum - high gase, transactions get culled / too many trasnaction in queue

We have the following openethereum service (docker-compose) version: '2.3' services: ethereum: # using v2.6.2-beta as it's stable # paritytech/parity-ethereum/issues/10371 image:...
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26 views

Transaction having low gasPrice makes all the other transactions pending state

When transactions are on pending, is it possible to follow a path to fix this situation without deleting the transaction.rlp file and shutting down the machine? Thank you for your help!
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202 views

Performant way to simulate pending transactions in real-time?

I have this, in ethers.js, where provider is a WebSocketProvider connected to a full node, which is working fine for getting the tx's (quite a lot of them per second): provider.on('pending', async (...
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1answer
243 views

Why transaction is still pending?

I have created a transaction some days ago. It has status Pending and gas price 82 gwei. Today at etherscan I can see a minimal low gas price is 73 gwei. And a minimal average gas price has the same ...
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2answers
299 views

How to hide transactions from mempool?

I am testing out blocknative's mempool explorer (https://explorer.blocknative.com) and noticed a lot of pending transactions are actually already confirmed by the time it picks them up, which I can ...
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29 views

Stuck ERC-20 Transaction - reversal did not work

I tried two days ago to send some BAT and ETH to my Coinbase account from my Klever Wallet (which, after this, I will never use again - they seem to be living in 2015 with the gwei fees they charged). ...
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1answer
2k views

i stupidily wrapped my ether to weth from metamask using uniswap,

I stupidly wrapped my ether to WETH from MetaMask using Uniswap. I then used https://relay.radar.tech/ to unwrap it but its taking so long. Here is the transaction hash ...
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Parity light node does not broadcast transactions for 4 hours

I have been running parity light node for a while. And recently, when I send ETH or any token using rpc method sendTransaction, my parity node does not broadcast those transactions over the network. ...
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199 views

Commit-Reveal contract still vulnerable to front running. How can it be improved?

I'm writing a contract and I want to shield it from front-running as best as it can possible be done (obviously, fully preventing front running would be ideal). My implementation is very similar to ...
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369 views

Transaction not being mined within 750 seconds

On the main net, after getting the error from the title, by making sure it's not in pending pool, how long should I wait until I can safely retry a transaction? Thanks
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1answer
105 views

Cannot consume all pending transactions

I am trying monitoring pending transactions using my local node. I mentioned that my app does not consume all pending transactions. I compared transaction from my app with etherscan.com or dextools.io....
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1answer
296 views

Monitoring of pending transactions

I'm using Web3.py with Infura Is it possible to see in real time the last pending transactions ? And have all the informations about it like who send it, who received it and more. The idea is to do a ...

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