Unanswered Questions

15
votes
0answers
898 views

Was a timejacking attack ever performed?

The timejacking attack appears to be a pretty straightforward attack to pull off successfully. I was wondering, whether it was ever performed and documented somewhere, or was it just theoretically ...
14
votes
0answers
216 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 ...
10
votes
0answers
386 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
0answers
470 views

Is there a good tutorial on how to use bitcoinjs exit nodes?

The documentation that I found seems to contain info about specific API calls, but no top level explaination/example. Where can I find a practical concise example of using exit nodes? I'd like to ...
8
votes
1answer
212 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. ...
6
votes
1answer
134 views

What was the vulnerability in v0.3.4 that allowed an attacker to steal coins?

Reference: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-5141 What was the specific exploit in the Tx script evaluation process?
6
votes
3answers
2k views

Best way to mix bitcoins? mixer, coin join (shared send), dark wallet, stealth addresses?

When you want to anonymize a few hundred BTC, what would be the best (safest) way? I can think of these alternatives: Deposit to and withdraw from exchange (like Kraken, Bitstamp, etc)Pros: ...
5
votes
0answers
36 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 ...
5
votes
0answers
80 views

Which release fixed CVE-2010-5141 (attacker can spend any coin)

This post by Mike Hearn relates an interesting bit of history: When Bitcoin was first released, it contained two completely fatal bugs that made the entire system worthless. Fortunately, they were ...
5
votes
0answers
32 views

Provable Solvency Implementations

Is there a list of provable solvency implementations? It appears to be that each company is taking their own unique swing at the problem. This strikes me as an area that could benefit from ...
5
votes
1answer
667 views

How to verify the signature of a raw transaction

I know there are many tools to check an ecdsa signature of a bitcoin transaction and I understand the ecdsa algorithm. It takes three inputs, a hash of the transaction, the digital signature and the ...
5
votes
0answers
360 views

Law / country specifics to start Ripple Gateway

There is requirement in https://ripple.com/wiki/Gateway_Integration_Manual Gateways should comply with the BSA, have AML policies and require KYC information. As i understand this requirements can be ...
5
votes
5answers
224 views

Safely convert paper wallet to encrypted online wallet

I started investing a not insignificant part of my salary into BTC a few years ago. I created 10 paper wallets (using bitcoinpaperwallet.com) on a dedicated laptop disconnected from the Internet. I ...
5
votes
1answer
291 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 ...
5
votes
2answers
2k views

Transfering Money From My Bank Account To Bitcoin?

Im quite confused about this bitcoin software/system. I have successfully sync'd to the network (took hours) and have recieved my address. Now, if someone is selling something for 5Bitcoins. What is ...

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