Unanswered Questions

14
votes
0answers
846 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 ...
13
votes
0answers
186 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
378 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
439 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 ...
6
votes
1answer
108 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?
5
votes
1answer
65 views

Procedure for calculating taint?

I'd like to understand taint analysis quantitatively. Blockchain.info offers a service that will calculate taint, but I've found no good explanation for how taint is calculated. The best (and only) ...
5
votes
0answers
33 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
41 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
31 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
0answers
354 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 ...
3
votes
0answers
40 views
+50

How to migrate wallet from namecoin to namecore?

Today I updated namecoin by building the new "namecore" reimplementation but when starting namecoind I got this message: Error opening block database. Do you want to rebuild the block database now? ...
3
votes
0answers
12 views

Can the fee produced by estimatefee be artificially manipulated?

Could a miner who wanted more transaction fees manipulate the fee produced by estimatefee? If so, what percentage of hashpower would it take, and how long would you need it?
3
votes
1answer
37 views

Recurring Bitcoin or Altcoin Payments as a Service?

I was wondering are there any recurring payment services aside from the obvious coinbase one out there. I want to be able to have a finer grain control. Say I wanted to send X amount of btc/altcoins ...
3
votes
0answers
91 views

Cannot create a transaction

I am trying to create a transaction on the bitcoin testnet, using bitcore: Error Message : SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data Here is my code: ...
3
votes
0answers
76 views

Working example of raw transaction utilising Boolean (OP_IF, OP_ENDIF) scripting REQUIRED

I recently posted this Testnet TX (TxID 2d0daa01da8294a54178f8111eb2a02010c425fd15957d8baee8717edcfbe105) which successfully spends an output (TxID ...

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