All Questions

Tagged with
6
votes
3answers
1k views

Shortest and Longest block interval time ever recorded in Bitcoin

Bitcoin block interval time is on average 10 minutes, that is the difficulty is adjusted in such a way that every 10 minutes a miner will manage to find the right hash. This is just an average time ...
1
vote
1answer
45 views

When we're calling `getrawtransaction` how does Bitcoin-core calc and verify confirmations?

if a transaction has 10 confirmation, does bitcoin-core check if the txid exists in the last 10 blocks? or its calculated based on transaction block number?
0
votes
1answer
53 views

Confirmations in block and trasaction

From the bitcoin RPC, both gettransaction and getblock returns a confirmation number in their response, are they always the same? Is there a case a transaction's confirmations isn't the same as its ...
1
vote
2answers
739 views

BlockChain scalability: How does BlockChain process multiple parallel transactions?

I just did some introductory research into blockchain technology and this is a breakdown of my understanding of how it works: Scenario: Assume Trump wants to send Obama 5 bitcoins. As soon as this ...
1
vote
1answer
86 views

Is it possible for two nodes to view blockchains differently?

Is there a chance, that at some point in time, two blocks will have different number of confirmations, according to different nodes? Like, with difference up to 3-4 confirmations? The problem I'm ...
4
votes
3answers
4k views

What is the “confirmation” field in a block?

What is the importance of the "confirmation" field in a block? How many confirmations are required to accept a block in a blockchain?
3
votes
2answers
355 views

Energy to confirm one block?

What is the minimum energy (or CPU operations) required for someone to confirm one block on their own, to launch a double-spend attack? How can I calculate this from the current difficulty or ...
2
votes
1answer
839 views

Do Miners get a reward for re-confirming blocks?

As far as I know, to ensure double-spending didn't happened and also for other security reasons, there is minimum number of confirmations that a transaction should have to be accepted. That value is ...
1
vote
1answer
743 views

Confirmation limit

When seeing transactions I see that the number of confirmations keeps increasing without any limit. I wanted to know if there is any time limit on including a already confirmed transaction in a block ...
1
vote
2answers
780 views

Block confirmation speed

Based upon any standard you think relevant, how quickly are current blocks being verified for rule-following such as correct balance tallies, true transactions, correct rewards & fees? Is this an ...
3
votes
1answer
167 views

Is the current number of confirmations visible somewhere in the raw block?

Is the current number of confirmations visible somewhere in the raw block output created by blockexplorer or blockhain.info? Is this information available in the raw stream or is the number of ...