Linked Questions

42
votes
10answers
184k views

How to unstuck a low-fee transaction with blockchain.info?

I've sent a transaction from blockchain.info, but accidentally included too little fee. What can I do to cancel the transaction or speed up the transaction's confirmation? This is a complementary ...
40
votes
2answers
35k views

Do unconfirmed transactions expire?

Do they just sit there unconfirmed (e.g. when you be evil and don't pay a tx fee) forever? Or do they get deleted after a few days?
30
votes
3answers
15k views

How do transactions leave the memory pool?

How does my bitcoin core client know when to drop a transaction from the memory pool? Is it as simple as a specific period of time?
29
votes
3answers
52k views

What's the minimum transaction with bitcoin?

What's the minimum transaction with bitcoin - local wallet to local wallet. Can I send for example $20 in bitcoins to another person?
26
votes
4answers
16k views

How do miners select which transactions to include in a block?

Where and how do you view and select which transactions to include in the block you are trying to create? Do you look on the blockchain? Is there some tool that you can use that allows you to see ...
21
votes
4answers
103k views

What happens if your transaction is never confirmed?

If I have a low amount and don't include a fee, the transaction takes forever to get confirmed. What happens if it never gets confirmed? Can the wallet that I sent it to still spend the money?
19
votes
2answers
7k views

What happens if my transaction is not accepted because I did not pay fees?

I was reading this thread about a client fork that does not force transaction fees and I noticed the big red warning saying that some coins might get lost if I am not careful. What does this mean? ...
12
votes
4answers
27k views

How to unstuck a low-fee transaction with Electrum?

I've sent a transaction with Electrum, but accidentally included too little fee. What can I do to speed up the transaction's confirmation or to replace it? This is a complementary question to Why is ...
8
votes
2answers
2k views

What if the mempool exceeds 300 MB?

The bitcoin mempool size is at 108 MB and still climbing according to chain.so. It is slowly approaching 300 megabytes, which is said to be the mempool limit for BTC. What happens after 300 MB?
7
votes
0answers
27k views

Blockchain - How can I cancel my blockchain transaction, unconfirmed after +1 day [duplicate]

I am using blockchain.info. I have made a bitcoin transaction of 4.79 BTC to the address 1DWaEfPbcKQvjMi9D9eNMrVRQzWiSLVvaS. (exchanger) You can see the transaction at https://blockchain.info/tx/...
6
votes
2answers
10k views

Please explain network propagation with unconfirmed transactions (blockchain.info)

I am wondering if someone could explain why two transactions have different network propagation values... and what does it even mean considering they are both unconfirmed transactions. Do the ...
6
votes
2answers
3k views

How to remove unconfirmed, non-existent transaction from QT wallet [duplicate]

I transferred 10 btc from my Coinbase acct to my wallet. The transaction appears twice in my wallet, one went right through and confirmed within minutes, the other has 0 confirmations (after 2 weeks),...
5
votes
1answer
321 views

Stop bitcoin-qt from retrying transaction

I sent some bitcoins, forgot to uncheck "no-fee" checkbox. The transaction started, but never got confirmed. In the blockchain after some time it was "purged". I expected my bitcoins back, however, ...
5
votes
1answer
6k views

How can I unstuck a transaction sent from Mycelium?

My transaction has been unconfirmed for more than a week. I had a normal transaction fee (not low). The amount of the transaction was not small >0.5btc. The inputs were not unconfirmed outputs. The ...
4
votes
1answer
554 views

Another Unconfirmed BTC transaction [duplicate]

Sorry guys & gals - yet another "unconfirmed BTC transaction..". Looks like the fee was too small, but this was sent 72 hours ago now (at the time of writing) https://blockchain.info/tx/...

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