Questions tagged [nonce]

A random number that is only used once. It is generated at the beginning of a communication by one communication partner and has to be sent back by the other one in order to prevent replay attacks.

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1answer
18 views

Is there “auto-drop” or “auto-cancel” for a transaction that's not been processed for a long time?

I sent a transaction with relatively low gas and during several days it was pending. Eventually I managed to have it to get through by increasing a gas fee. Other time I send a transaction with a low ...
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1answer
18 views

nonce in World State

Is the nonce stored in the Ethereum world state explicitly? Acco. to the yellow paper it does. But in "Mastering Ethereum", Andreas writes - However, the nonce is not stored explicitly as ...
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1answer
420 views

Why is there a nonce and mixHash value in the genesis file?

I may not fully understand the genesis file. Why is there a nonce and mixHash value in the file if nothing is being mined? It was my impression the genesis file is used to bootstrap block 0, then ...
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4answers
995 views

send raw transaction without knowing nonce

I want to send raw transactions but I don't want to accidentally overwrite any transactions. Afaik when using eth.sendTransaction it automatically increments the nonce and doesn't overwrite any ...
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2answers
49 views

Can using getTransactionCount() + 1 prevent waiting for pending transactions?

I tested sending multiple transactions with a low time gap, and I knew that they will wait for previous transactions to be confirmed. I did not use Nonce in the transaction code as it is optional. But ...
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3answers
5k views

Concurrency patterns for account nonce

The account nonce is the only element in the transaction structure that prevents replay attack (as explained in this very good answer). It essentially forces sequentialisation of an account's ...
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1answer
103 views

Transaction Pending and Dropped

I have a transaction pending from 4 days. I have tried to unlock following this answer: MyEtherWallet is pending and dropping. It looks like it is stuck in a loop for 2 days? Now the current nonce is ...
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1answer
40 views

Combined transactions executed together?

If I'm correct the nonce is responsible for the order transactions are executed. Let assume you have two transactions T1 & T2. T1 depends on T2. So I want to have an order T1 then T2. This is done ...
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3answers
56 views

how is it possible to send 5 successful, consecutive transactions at the same time?

I just witnessed something amazing that I didn't think was possible before. I was under the assumption if that you try to submit consecutive transactions, the latest transaction with the highest nonce ...
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0answers
20 views

How to fill transaction nounce gap for an EOA?

If for whatever the reason, one transaction submitted (say lost transaction with nonce N) was not mined into block. The consequence is that any transactions submitted after the lost transaction will ...
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1answer
66 views

After a suicide operation, is contract’s nonce reset to 0?

Simple question, but I couldn’t find the answer in the yellow paper. Is it reset to 0 or is it kept at the latest value before destruction ?
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3answers
4k views

Transaction stuck because of low gas price

i accidentally put the lowest gas price possible when i am about to send my eth.. is there any way to cancel / re-make my transaction?? i have read some articles telling that i should out-gassed my ...
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1answer
555 views

How does metamask manage the multiple transaction with same address?

I'm struggling to implement the functionality which sends multiple transactions using the same address. here the from address is same but the to addresses are different. When I did research on this, I ...
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2answers
23k views

What is nonce in Ethereum? How does it prevent double spending?

recently I got fascinated by blockchain, and started learning Ethereum. I came across the concept of the nonce in Ethereum. After researching I found out that nonce is used for two purposes. a. To ...
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1answer
182 views

BlockCypher Account nonce too far behind transaction

I'm currently working on a DApp that involves sending transactions. I'm using BlockCypher to send the transactions since the API is fairly straight forward. One issue I'm finding is that when I run my ...
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1answer
23 views

What if difficulty exceeds the length of a fixed sha256 hash in proof of work?

Hello im a newbie in Blockchain, i got to know some basics, but im confused that what if the difficulty exceeds the length of a sha256 fixed length string example : The fixed length is here 64 (sha256)...
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2answers
1k views

{'message': 'Nonce too low', 'code': -32000} when sending transaction on geth JSON-RPC

I am trying to send a transaction using Go Ethereum 1.4.18-stable JSON-RPC and I am getting the following error: {'message': 'Nonce too low', 'code': -32000} This is a single transaction on ...
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1answer
293 views

Transactions stuck at pending on ropsten test net from one day

I am Writing a simple script for ERC20 token transfer method. which sign transaction offline and then submit it to network. Transfer method encoded data : var encoded = await MyContract.methods ...
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0answers
374 views

Is it required to use multiple Etherem accounts to send transactions on behalf of customers to avoid pending transactions?

We are developing an Ethereum based exchange. In our project, customers put their orders to send ETH or ERC20 tokens to others, and we currently do these transactions via our Ethereum account on their ...
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42 views

Disabling nonce check for go-ethereum for a private test net when using web3js batch requests to send tx

I am using web3js batch.add and batch.execute to send tx for an ethereum private testnet that I have created. I send tx using batch.add and batch.execute (don't prefer to use promises since they ...
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0answers
55 views

If I have several wallets with the same address, how to deal with nonces?

I access Ethereum from several wallets. Some of the addresses are present in several wallets at once. I discovered that nonces should always increase. (Right?) Then if I send transactions from several ...
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1answer
68 views

How does NONCE prevent a replay attack in case of knowing NONCE value?

I have a question about a nonce in the Ethereum network. I understand that a nonce helps to prevent a replay attack, but there is one particular part that I don't understand. I have applied my ...
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26 views

Are transactions with too high nonce propagated to other nodes from local pool by parity?

I want to understand what happens with tx when I create tx with too high nonce. It's saved in a local queue, but do other nodes get the information about this tx? I don't know, can I remove tx from ...
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0answers
162 views

Ethereum transaction sent from Ledger Nano X stuck because too low tranasction fee used

My ETH are STUCK. 48 hours ago i sent 31 ETH from my Ledger Nano X to my Coinbase account, but i choose the slowest and cheapest method that was diplayed into my ledger ( I don't remember how much gas ...
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0answers
12 views

Why does proof of work targeted zeros always comes at the start of hash? why is it not in the middle or the end of hash?

My question is why always targeted zeros come at the start of hash of the block? I have never seen more than 2 zeros in middle or somewhere else in the hash of mined block... What's the reason?.... ...
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1answer
28 views

What's the max number allowed as nonce? [duplicate]

I tried to generate nonce using this formula, so I can avoid 'underpriced' problem and nonce conflicts nonce: web3.utils.toHex( Math.round (Date.now() / 1000 - 1586000000) ), But simply these ...
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30 views

Invalid nonce and gaslimit

When i try to deploy a contract i get the following errors Skipping adding transaction to block because of gas limit: 0x7893d69159325fb60c90772c84b9e3c74a1627440d70e799fce81275066e8743 (limit: ...
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1answer
31 views

Is it possible to partially signed tx without nonce and then a third-party proxy will fill the right nonce?

As part of building managing nonce mechanism, we thinking about several approaches for issue tx from frontEnd without the need to wait till it mined before sending the next tx. Is it possible to ...
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2answers
38 views

Should I use getTransactionCount() result in sendTransaction()? [duplicate]

As I read, getTransactionCount() returns the number of transactions sent from an address. Which of below items should I consider? Not to use returned nonce? Use the returned nonce number as a ...
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0answers
29 views

Sending tokens out on coinpayments success payment using Web3py

I'm writing Django app and want to send out tokens using Web3 once Coinpayments sends me callback about successfull payment. The problem is that Coinpayments sends multiple callbacks at once and just ...
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1answer
78 views

Simulating multiple transactions

I want to simulate sending multiple transactions at the same time to a smart contract and i'm wondering if, for example, sending 100 transactions from one address is the same as sending 1 transaction ...
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1answer
26 views

Giving a big nonce in transaction doesn't return anything?

When we put a low nonce in transaction options we got "nonce too low", but when a put a big nonce (bigger then transaction count) we got anything why ?
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3answers
28 views

What happens with nonce if address have nonempty code and someone submits transaction from that address?

Ethereum Yellow Paper states: nonce: A scalar value equal to the number of transactions sent from this address or, in the case of accounts with associated code, the number of contract-...
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1answer
16 views

Can consecutive transactions be mined on same block?

Can consecutive transactions of same EOA (Externally Owned Account) be mined at same block as below? TX1: nonce=0, Number_confrimed_Block=100 TX2: nonce=1, Number_confrimed_Block=100 TX3: nonce=2, ...
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1answer
110 views

What algorithm is used to generate nonce hash in genesis file?

When looking for information about the nonce property of the genesis file, everything says that it is a 64-bit string hash etc. But which algorithm is used to generate this hash ?
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1answer
494 views

the tx doesn't have the correct nonce. account has nonce of: 12 tx has nonce of: 3 - Ganache

I am trying to run my simple contract with different parameters (in the form of encoded signatures) and intends to put multiple transaction into ONE block. If I set Ganache GUI with automine option, ...
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1answer
78 views

How to check nonce include pending transactions?

I want to count nonce include pending transactions as following. Tx1 nonce=0 succeed Tx2 nonce=1 pending Tx3 nonce=2 pending Tx3 nonce=3 pending I am using api provided by etherscan, but it just ...
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1answer
257 views

Does nonce increase when the transaction fail?

DOes nonce increase when the transaction fail? TX1 nonce=0 succeed TX2 nonce=1 failed TX3 nonce=? What value of nonce will TX3 have? It will be appreciated if you explain the reason why.
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2answers
124 views

If a transaction ends up in an orphaned/forked block, what happens to subsequent transactions?

Suppose I sign and send several transactions using the following function: async function send(web3, account, transaction) { const options = { to : transaction._parent._address, ...
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1answer
89 views

Account nonce — Incremental, i.e., Deterministic or Arbitrary

In cryptography, a nonce is an arbitrary number that can be used just once. But in Ethereum, the account nonce is deterministic. Deterministic vs Arbitrary -- How can both be true at the same time?
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1answer
210 views

About transaction higher nonce than current nonce

I'm trying to build an Ethereum exchange service, so concurrent schedule is needed and nonce management is the most problem (another topic discussed about it). At specificed moment, I have large ...
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1answer
104 views

Will nonce increase even when the transaction fail?

Will nonce increase even when the transaction fail? For example, nonce=0 -> tx succeed nonce=1 -> tx succeed nonce=2 -> tx fail Then I want to send a new raw transaction, should I assign ...
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1answer
65 views

how does DAG affect the NONCE finding?what about fix the DAG size to 1G?

I'm going to decrease DAG size on private net, by change the algorithm.go code var datasetSizes = [maxEpoch]uint64{ 1073739904, 1082130304, 1090514816, 1098906752, 1107293056, 1115684224, ...
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2answers
41 views

is account nonce network dependent?

In Ethereum, does Account nonce depend on network? I mean for same address on different network, will there be different nonce?
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2answers
392 views

What is the difference between account nonce and block nonce?

Block and accounts both use a value called "nonce" but they seem to represent something very different. For account I understand that the nonce is an integer quantity indicating the number of ...
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0answers
26 views

How to process null TransactionReceipt?

I have some transaction that is sent and from time to time when I call the eth_getTransactionReceipt I get a null. I see esentially two approaches for handling this: I could reiterate the call to ...
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1answer
63 views

getTransactionCount return different response

geth version 1.8.27 The pending nonce is 8 at first, then I send a transaction and use eth.getTransactionCount to get the next pending nonce. > eth.getTransactionCount("...
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2answers
2k views

getTransactionCount with 'pending' not working?

Sending Ethereum transactions requires incrementing the nonce properly. In a typical application, there can be concurrent and/or consecutive requests to transfer from the same address. Most solutions ...
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1answer
1k views

How to get current nonce that I need to send along with a transaction?

I wish you send nonce with every transaction so that I can store my nonce in DB and can override a specific transaction if it is pending for a while. I know I can use eth.getTransactionCount("...
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1answer
85 views

In bitcoin it's bad to reuse addresses (less security, as public key has already been revealed), how about ethereum? [duplicate]

In bitcoin it's bad to reuse addresses (less security, as public key has already been revealed), how about ethereum? Is the public key revealed when the first transaction (first nonce) is used?