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1500 questions
9
votes
2 answers
How secure is calling bitcoind JSON-RPC?
How secure is calling bitcoind through a JSON-RPC? For example, if I run it on one of my computers, and try calling it from another computer (provided neither of them are compromised), can someone intercept my communication and gain my RPC username…
ThePiachu
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9
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3 answers
ECDSA Signature and the "z" value
The following link contains details on how to reverse the ECDSA signature if given two identical "R" values.
http://www.nilsschneider.net/2013/01/28/recovering-bitcoin-private-keys.html
I have read over this and there's one part I don't understand;…
Mine
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9
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1 answer
What are pros and cons of Tendermint?
The writer describes it as a "solution to the blockchain consensus problem that does not require mining."
The white paper is viewable here:
http://tendermint.com/docs/tendermint_v04.pdf
I don't mean what are the pros and cons in relation to Bitcoin…
user1205901 - Слава Україні
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9
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1 answer
How can Blackcoin get 1st confirmation in 10 seconds?
According to it's official page, Blackcoin used scrypt as its Proof-of-Work during the phase of initial coins' creation. But now it's purely Proof-of-Stake, and they claim to have a speed of just 10 seconds for first confirmation (and only needing…
Joe Pineda
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9
votes
3 answers
How can an unconfirmed transaction be removed from the memory pool?
Using Bitcoind and Json-RPC, how can I remove an unconfirmed transaction from the memory pool?
The scenario being that I want to remove the unconfirmed transaction because it's not getting confirmed, and it's preventing me from sending new…
Flavien
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1 answer
How do I find the hash "market share" of P2Pool?
P2Pool is a peer to peer mining pool, offering some advantages over centralized pools:
There is no central node to take down (assuming the pool is indeed fully decentralized). Pools have suffered from DDOS attacks in the past.
An open source P2P…
ripper234
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9
votes
3 answers
How can I control which coins to spend in a transaction?
When creating a bitcoin transaction, you have to choose which coins to use in them. The standard client does this in a way to avoid unconfirmed inputs and minimize the number of inputs and amount of change involved. Since not all coins are created…
Thilo
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9
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2 answers
Can the blockchain be outpaced by a chain of low-difficulty blocks?
Let's say someone creates a blockchain fork starting from the genesis block, when the difficulty was absurdly low compared to today; then he starts mining new blocks from there up to the current block index.
Normally, this would require such an…
Massimo
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votes
1 answer
How does BitCoin prevent fraud during confirmation period?
I'm trying my best to understand how bitcoin works and while I've grasped the basics, there's a lingering question:
What's to stop me from spending my bitcoin multiple times during a confirmation period?
Let's say I have a single address that owns 1…
Chad Decker
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9
votes
2 answers
How does Ethereum domain registration works?
I am wondering how does the Ethereum domain registration works? From what I can see in the whitepaper, I know there is account-specific data storage, but I don't know if that would be the ideal way to register domains. Generally, one would need some…
ThePiachu
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9
votes
2 answers
What is "Verifying last 288 blocks at level 3"?
Upon every start of bitcoind, I see the following in de debug log:
Verifying last 288 blocks at level 3
come up. At this point, no new blocks have been downloaded and the block chain was 100% up to date when I last closed bitcoin. Bitcoind does not…
user
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9
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1 answer
Heartbleed bug and Altcoins
Bitcoin recently released V 0.9.1 patching vulnerabilities from the Heartbleed bug, however I have not seen anything from any alt coin. What are the possible security risks associated with using these coins? And what are the risks to the coins…
Mark
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9
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4 answers
Lottery Mining?
I know mining is extremely difficult now.
I just wondering has anyone "won" by solo mining a block? How does the chances compare against say wining the lottery?
Assume 3 Giga Hashes Per Second say.
Sydwell
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9
votes
1 answer
What does the Bitcoin RPC mean and how is it used?
What does Bitcoin RPC mean and how is it used? I see the term RPC referenced multiple times, but not show what it means and how its used. I see it in JSON-RPC. I know json is just a data format, meaning it looks something like this: { apple: red,…
Patoshi パトシ
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9
votes
6 answers
What would a new exchange need to be better than the rest?
If a new crypto v crypto exchange were to be built and launched. What would tempt you to use it rather than what you currently use? Or what improvements would you like to see from the way things work now.
BeTheChange
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