all transaction data (not yet confirmed) in a block that has been identified by Monero nodes
Questions tagged [txpool]
33 questions
15
votes
1 answer
Why will the v5 fork raise the min block size to 300,000 bytes?
Why will the v5 fork raise the min block size to 300,000 bytes?
v5 is now used for an increased minimum block size (from 60000
to 300000) to cater for larger typical/minimum transaction size.
I know that there have been some transaction waiting…
Sebastian Ullrich
- 607
- 5
- 12
14
votes
2 answers
What security risks are associated with accepting Instant Transactions?
If a merchant decides to accept a Monero payment the moment it appears in the memory pool (before confirmation) what risks are being assumed?
Based on the probability of these risks being exploited, might there still be a business compelling need to…
Pedro
- 433
- 3
- 7
11
votes
2 answers
What does "transaction failed" mean in simplewallet?
When I opened my account in simplewallet, it said that my transaction failed even though I saw them in a transaction pool on a block explorer. What does the message mean in simplewallet?
Ginger Ale
- 5,694
- 2
- 19
- 46
11
votes
1 answer
How many transactions can fit in a block?
Based on current average transaction sizes, how many transactions can currently fit in a block?
If there is a sudden flood of transactions that exceed the answer to #1 how long can they remain in the mem pool to await confirmation in a later…
J Dog
- 885
- 5
- 17
9
votes
2 answers
Calculating the cost of a double spending attack
A toll booth owner wants to accept zero confirmation transactions (because waiting for confirmation would lead to long lines at the toll booth) and open the gate as soon as the transaction (with integrated payment ID) reaches the mempool.
Is there a…
Logan
- 808
- 1
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8
votes
2 answers
Does Monero use replace-by-fee?
Replace by fee is a proposed mechanism for bitcoin (that has not been adopted) by which 0 confirmation transactions can be "undone" by submitting a transaction with a higher fee.
Technically, this isn't part of the consensus protocol, since 0…
Christopher King
- 3,120
- 14
- 65
8
votes
1 answer
How long are unmined transactions kept in the memory pool?
Since the RingCT hard fork, there's quite a backlog of transactions in the memory pool, even a single transaction sitting there for 40 hours already.
Are unmined transactions "returned to sender" after a while? If so, after how long? If not, are…
dpzz
- 4,539
- 4
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7
votes
1 answer
What is the rationale behind keeping transactions in the mempool longer after they were in an orphaned block?
In a question about maximum block size and mempool behavior user36303 said:
"Transactions will stay for a day in the pool before being dropped. This increases to seven days for those transactions were once in a block which was reorganized."
What is…
jwinterm
- 4,413
- 1
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7
votes
1 answer
How to query the memory pool?
Block explorer explorer.xmr.my shows the contents of the memory pool. Does monerod, monero-wallet-cli or another CLI utility allow to query the Monero's memory pool? If so, how?
dpzz
- 4,539
- 4
- 22
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6
votes
1 answer
ring size three transactions in txpool after v6 fork
There have been 3 transactions sitting in the txpool since the beginning of the v6 fork activation about 97 hours ago. Each of these 3 transactions (examples 1, 2, and 3) has a ring size of 3 which is now invalid after the v6 fork. According to this…
Seth Abrams
- 355
- 1
- 8
6
votes
3 answers
Why does proposed transaction fee fluctuate heavily sometimes?
I have enabled the always-confirm-transfers feature for my wallet, just to see the proposed transaction fee before I confirm the transaction. I have noticed that it sometimes fluctuates quite heavily from one minute to another. Real example:
[wallet…
dpzz
- 4,539
- 4
- 22
- 46
5
votes
1 answer
Will 2 minute block times discourage retail merchant adoption?
Waiting an average of two minutes for a transaction confirmation is a long time when there is a line of people at a checkout counter. This is particularly true when compared to nearly instant Visa/Mastercard confirmations.
Monero confirmations are…
1010101 Lifestyle
- 647
- 3
- 7
5
votes
2 answers
Can I cancel a transaction?
I sent a transfer but the transaction is still in the transaction pool. Can I cancel it?
assylias
- 2,218
- 12
- 28
4
votes
1 answer
Monero double spends in the txpool
If a transaction A enters the txpool at timepoint A', and then a second transaction B enters the txpool at timepoint B' at a location distant enough to have not received information about transaction A, how does the Monero protocol handle this…
Ginger Ale
- 5,694
- 2
- 19
- 46
4
votes
1 answer
maximum number of transactions in memory pool
Is there a maximum number of transactions that can sit in the Monero memory pool at the same time?
If there is, what happens to transactions that would cause the memory pool to exceed that level of capacity?
Brad Collins
- 296
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- 8