Linked Questions

1
vote
0answers
81 views

Longest “natural” fork [duplicate]

Once a day, roughly, two competing blocks with the same height are mined, which leads to one of them being orphaned. Was there ever a "natural" case in which the fork lasted for two rounds? By ...
59
votes
5answers
26k views

What is a soft fork?

When people talk about possible changes to how Bitcoin works they sometimes say a particular change can be implemented as a soft fork. What does that mean? How does this compare to a hard fork?
8
votes
4answers
6k views

Will transaction confirmation time be reduced as the network size increases?

Right now it takes 6 confirmations, which takes about an hour to verify a transaction. Will the rate at which transactions confirm become faster over time?
11
votes
2answers
2k views

What's the longest chain of orphan blocks? (How many confirmations have been necessary?)

I believe my two title questions are the same (are they?): Heretofore, what is the longest chain of orphan blocks (of N blocks), such that if someone didn't wait for N+1 confirmations, they may have ...
8
votes
2answers
2k views

What happens if you set prune=<n> to a value between 0 and 550?

Today I saw a question about what Bitcoin Core would do if you set prune=1. The documentation on bitcoin.org states: A value of 0 disables pruning. The minimal value above 0 is 550. Apparently, ...
5
votes
3answers
2k views

Getting orphaned Blocks from the Blockchain

I'm very interested in doing some analysis of orphaned blocks, but to do so I'd have to have a good way of accessing them. Blockchain.info seems like a good place to start but I don't want to abuse ...
3
votes
2answers
1k views

Is there actual consensus on the blockchain's tip or only until the next block?

Using this scenario https://bitcoin.stackexchange.com/a/40435 Let's say we have two competing blockchain tips: They both start from Block A as a parent, but then there are two different blocks ...
7
votes
2answers
514 views

What block numbers & hashes were discarded by the March 2013 blockchain fork?

When exactly (GMT) were these blocks mined?
5
votes
2answers
317 views

Can someone with an unlimited amount of money compromize the network?

I was reading this interesting discussion in the comments section on ZH where this guy was talking about how a single entity (think corrupt government and banksters) can throw money and processing ...
3
votes
1answer
886 views

Conflicted transactions in blockchain reorganizations

When my service detects a conflicted transaction (either sent or received) it rollbacks everything that was logically built upon this transaction. The "problem" is that transactions can go from ...
1
vote
1answer
141 views

How to track and handle double-spend attacks?

If a double-spend attack is pulled off, how to manually verify transactions via the bitcoin daemon and how to know how much amount lost? Will the saved transaction hash be re-usable to obtain info ...
0
votes
1answer
122 views

Detection of double spend in Bitcoin for aged transactions

This is just to verify my understanding of Bitcoin double spend detection. 1) Use of UTXO indexes : This ensures that there as been no spend from that output (transferred to recipient in Block of ...
1
vote
1answer
98 views

Can the Bitcoin network boycott a misbehaving miner?

If a miner misbehaves, can other miners “boycott” him/her by refusing to build on top of his/her blocks in the future? Will such a “boycott” keep the miners from behaving badly?
0
votes
1answer
44 views

Bitcoin fork resolution - Fork losers download previous blocks 'til common block?

When resolving a naturally occurring fork in Bitcoin, do the miners who were working on the orphaned fork download previous blocks from the miner who won the block reward that resolved the fork until ...
0
votes
1answer
43 views

Is a mined block invalid as soon as another block is added/accepted? [duplicate]

If all the miners are working on adding to the central blockchain, what happens if a miner (A) submits their valid block just seconds after another miner's block (B) has been accepted and added to the ...

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