Questions tagged [weaknesses]

Potential vulnerabilities to the Bitcoin protocol, code or implementation. Potential weaknesses in the Bitcoin concept are probably better tagged "Economics."

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119
votes
11answers
58k views

Is it possible to brute force bitcoin address creation in order to steal money?

Bitcoin users frequently generate new addresses for each transaction they make, which greatly increases the number of bitcoin addresses being used to receive money. Would it be possible (and ...
56
votes
8answers
38k views

What effects would a scalable Quantum Computer have on Bitcoin?

A scalable quantum computer is a quantum computer that is easy to extend - adding more (q)bits of memory is not a fundamentally hard problem, and will happen. Or, alternatively, that it follows Moore'...
49
votes
13answers
8k views

Will deflation destroy Bitcoin?

With the limited total quantity of bitcoins, and people losing their wallets constantly decreasing that number, won't rampant deflation destroy Bitcoin?
50
votes
9answers
5k views

What methods could a government use to shutdown Bitcoin?

Let's say that a government decided to shut down the Bitcoin network. What options would they have to achieve this? Would they need to convince other governments? All governments? Let's set as a ...
15
votes
1answer
974 views

Would a reduced block generation time make the Finney attack more difficult?

Related Question: What can be done to mitigate the risk of a Finney attack? The Finney attack is a form of double-spending attack where the attacker pre-mines a block containing a conflicting ...
13
votes
8answers
2k views

Could bitcoin be destroyed if an entity cornered the market?

I know the US Government is opposed to competing currencies. It seems that it would be a rather simple solution for them to destroy Bitcoin before it grows too much by merely buying all the currency, ...
37
votes
4answers
6k views

How is block-solution-withholding a threat to mining pools?

If I understand the technical process (for most mining pools) correctly, a participant in a mining pool is given block data to combine with a nonce to try to solve the block. If they get close (but ...
3
votes
4answers
704 views

Would bitcoin be destroyed if a wealthy organization obtained a CPU majority for a sustained period?

Inspired by this question ("Could bitcoin be destroyed by an entity cornering the market?") and the top comment on this answer to this question ("How much would it cost to execute a 51% attack?"). ...
22
votes
6answers
18k views

What happens to the bitcoin network when the miners all stop in the future?

What happens to the bitcoin network when the miners all stop, years in the future after all the bitcoins have been mined? How will the network continue to function? Won't bitcoins then be useless? ...
16
votes
2answers
1k views

Will the amount of electricity used for mining be huge if Bitcoin is widely adopted?

A quick and very rough estimation: If the USD/BTC exchange rate grows to $1000/BTC (not that far-fetched if Bitcoin is actually widely adopted) bitcoins for a value of $300000 would be produced every ...
4
votes
2answers
581 views

Why is Enjoy Sochi a malicious spam attack

I recently read the following thing on reddit: The two transactions for .00000001 BTC are a malicious spam attack. They were sent without fees, which means that if you wallet doesn't allow you ...
3
votes
2answers
1k views

Developments to prevent 51% hack [duplicate]

How might Bitcoin be made impervious from attack by large monied interests that could atttack with a brute force majority hashrate hack?
18
votes
1answer
1k views

How does the most recently found critical vulnerability (CVE-2018-17144) work?

If you were a miner, what are the steps you would take to create the extra (21,000,012.5th) bitcoin? Where in the source code is this exactly (link)? Why can't this be done by a non-miner? Also, ...
5
votes
1answer
2k views

How Does trading on the Exchanges Work?

Pardon my Ignorance but can somebody explain the basics Of how trading (Bid Buy/Bid Sell) works of the common exchanges www.mtgox.com www.btc-e.com Aslo some of the common ways people or ...
14
votes
2answers
1k views

Does any pool accept higher-fee transactions of a double spend, instead of the earlier one?

Some pools use a modified bitcoind that uses different rules for choosing the transactions to include in a block. Are there any pools that knowing one transaction to be included in a block would ...
10
votes
2answers
2k views

Does Bitcoin rely on the internet?

Is it possible to run Bitcoin mining and transaction distribution without using the internet? For example, how would Bitcoin continue in the event of a total clampdown by a telco?
8
votes
1answer
675 views

What is the “1 RETURN” bug?

From Nathaniel Popper's “Digital Gold : Bitcoin and the Inside Story of the Misfits and Millionaires Trying to Reinvent Money", this heavily edited (by me, for clarity) excerpt: “In late July Gavin ...