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1500 questions
28
votes
6 answers
Why is the disappearance of Mt Gox a problem?
I'm sorry if this is a stupid question, I'm not a bitcoin user and may lack important information. My understanding was that each bitcoin user has a wallet on his harddrive or wherever, where he stores his bitcoins with the transaction history…
mart
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28
votes
5 answers
How much would it cost to execute a 51% attack?
I know that it's commonly said that they're not really in the realm of possibility right now, but how much would it really cost to execute a 51% attack on the network? And are there any organizations out there who might have a goal in mind for…
David Perry
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28
votes
3 answers
Will all 21 million units be completely mined one day?
It is written that the supply of Bitcoin units is limited to 21 million and that this limit will approximately have been reached around the year 2030.
But is there an actual "last Bitcoin" (or "last Satoshi" for that matter) that will have been…
herzmeister
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28
votes
3 answers
How useful is a JavaScript miner?
I don't have a great understanding of how bitcoin mining works, but how useful would a JavaScript miner be for collecting revenue from visitors? Stupid question, but if I put the user in as part of a mining pool, must their computer actually find a…
Jack Humphries
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27
votes
4 answers
How do I export my private keys from my Bitcoin-Qt client?
Trying to use this posted method:
To export a private key from your Satoshi bitcoin-qt client:
launch your bitcoin client as usual and wait for it to load the blockchain and start up
click on 'help' in the menu bar (top right)
click on 'debug…
user2865
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27
votes
6 answers
Merkle Root and Merkle Proofs
This is one of those questions that everyone seems to write about but the same bad explanations are just plagiarized from site to site.
Edit: The heart of my question is why Merkle trees are claimed to be efficient when determining if a leaf node…
Jazimov
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27
votes
3 answers
What is pool hopping?
What is pool hopping and how do pool hoppers affect other miners?
Are there ways to prevent it?
Dr.Haribo
- 8,439
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27
votes
4 answers
What is a double spend?
What is a double spend?
As someone who uses Bitcoin, what do I need to know about how the Bitcoin system prevents double spends? Are there still circumstances where they can occur?
Dr.Haribo
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27
votes
2 answers
What is the wallet "word seed" that is commonly used in popular wallets clients and what does it do?
I've been using a pretty old version of Multibit classic and recently decided to upgrade. I tried out Multibit HD and Electrum and noticed that both have me set up a wallet with a "word seed". It's just a string of random words that is apparently…
user4276
27
votes
5 answers
how to monitor +20,000 addresses for new received transactions?
I have around 20000 generated addresses which I want to monitor for new transactions. More addresses should probably come. Customers should use every address only once but I would like to monitor already used addresses if some of them decide to…
curiosity
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27
votes
5 answers
Is Butterfly Labs reputable / Should I preorder the SC Jalepeno?
I'm somewhat new to the mining scene but I'm a bit familiar with everything. I see that GPU mining will become much less cost effective over the next year or so, especially around December when the block reward size drops to 25 BTC.
As an entry…
dv90
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- 3
27
votes
2 answers
How many Bitcoin addresses are/have been carrying a balance?
Bitcoin addresses can be generated at will, and the theoretical limit to their number is high. Addresses are constantly being generated to receive funds or balance transactions, but they are also being emptied.
How many addresses are carrying a…
Joseph Tanenbaum
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27
votes
8 answers
What is the cheapest Bitcoin -> prepaid VISA/Mastercard service?
I am looking for the cheapest Bitcoin to prepaid VISA/Mastercard service for the amount of $5000. I have noticed some with a maximum of $100, and inquired whether it would be possible to increase this cap. It is really not interesting to have to buy…
David
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27
votes
13 answers
What are some good resources for understanding Bitcoin?
I've tried to read about what a Bitcoin is, how to mine, etc. I find them to be confusing in that I don't understand the underlying factors driving Bitcoin. Everything I've read seems to assume the reader has some knowledge of Bitcoin (even the…
Origami Robot
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27
votes
4 answers
What is a DNS seed node vs a Seed Node?
I've seen references to both strewn around. Specifically, is there a bitcoin client running at the DNS seeds or seed nodes?
Shamoon
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