Unanswered Questions

19
votes
0answers
307 views

Have any SPV users lost money because they accepted forged bitcoins?

I'm making a list of real-life examples of occasions where bitcoins were lost to various known attacks. One of these known attacks is that lightweight (SPV) wallets can't verify whether a transaction ...
11
votes
0answers
416 views

Peergroup download of the blockchain stalls?

I'm using bitcoinsharp to build my client. I try to download the blockchain in a peergroup network. Download starts, but when progress is 98%, the download is stopped & the client is waiting (2 ...
8
votes
1answer
228 views

Mediated transfer of funds between three parties

Alice wants Bob to transfer 10btc to Carol, and is willing to pay Bob 11btc for the transfer. They both entrust Trent to mediate the transaction, and Alice is willing to pay Trent 1btc as commission. ...
7
votes
0answers
125 views

How does Ethereum achieve consensus?

It appears that Ethereum will start out with PoW and switch to PoS later. If I remember correctly, the block interval is planned to be fairly short in Ethereum. How does Ethereum manage to achieve ...
7
votes
0answers
47 views

Bitcoin privacy metrics?

I'm looking for a numerical privacy scoring system that estimate the degree of linkage between the members of a key pool (or even just individual key pairs). Ideally, the method should be easy to ...
6
votes
0answers
51 views

What are the arguments for and against deprecating transaction priority?

A recent pull request moves ahead to deprecate the concept of transaction priority by changing the block priority space to zero. This has enraged some users who believe that deprecating transaction ...
6
votes
4answers
113 views

What's the point of having a stack-based scripting language, if only a few standard forms are allowed?

What is the purpose of a stackmachine if only some standard script forms are allowed? And why are some scripts allowed and perfectly fine in mined blocks but rejected by clients if found in ...
5
votes
0answers
91 views

Starting out with Armory - can I make it go faster?

Does anyone know of a way to make Armory do an initial sync any faster? I've downloaded the blockchain but so far it's been processing/synchronizing with the network for 17 hours, and it claims it ...
5
votes
1answer
142 views

Bitcoin Core V 0.10.0: Is there a way to force send when not synchronized?

My Bitcoin Core is not yet synchronized, but I already attempted sending a transaction, so now it is 'conflicted'. I can see this conflicted transaction is not being propagated. Is there a way to ...
5
votes
0answers
200 views

How many addresses are sent in response to a getaddr message?

I've been trying to determine the number of addresses a node sends when it receives a getaddr message but I'm a little confused. On one hand, on addrman.h/.cpp I can see that: // the maximum ...
5
votes
1answer
304 views

Recovering the last few digits of a Litecoin private key

Is it possible to recover the last few lost digits (10) of my Litecoin wallet private key? Are there any recovery tools available? Or will I have to try and roll my own? Crucially, what crypto ...
4
votes
0answers
75 views

Are there drawbacks to the Thin Block patch?

Mike Hearn talked about a patch he applied to BitcoinXT recently in his AMA: I posted a patch last week that makes XT download blocks as lists of hashes instead of duplicating the transaction ...
4
votes
0answers
108 views

Cryptocurrency with small block size limit or large block time

So there are a lot of cryptocurrencies that tries to improve on Bitcoin's 1 Mb block size limit and 10 minute block time (6MB per hour) by using faster block times or larger block size limits. For ...
4
votes
1answer
85 views

How many bitcoins would it require for a sustained DOS attack on bitcoin network?

How many bitcoins would it require for a sustained DOS attack on bitcoin network? Without transaction fee, how many bitcoins would that be? How many transactions could we generate with 1 BTC ...
4
votes
0answers
65 views

Is Quark as secure as SHA 256?

I'm trying to make certain I'm understanding the purpose behind the Quark algorithm. There are lots of devices that need secure algorithms but have severe power and processing constraints such as ...

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