Unanswered Questions

14
votes
0answers
814 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 ...
10
votes
0answers
374 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
419 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 ...
5
votes
0answers
61 views

Which block() method does what?

In the main.cpp bitcoin code, there are a few different functions for managing blocks. ProcessNewBlock() AcceptBlock() CheckBlock() ConnectBlock() DisconnectBlock() What is a good summary for what ...
5
votes
0answers
343 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 ...
4
votes
0answers
41 views

Is there a more space-efficient way to prove that a transaction is contained within a block?

SPV clients, like Electrum, ask for cryptographic proof that a transaction is contained in a block. This is done by including each merkle branch necessary to get a hash that's equal to the merkle root ...
4
votes
0answers
28 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 ...
3
votes
0answers
42 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
37 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 ...
3
votes
0answers
83 views

What could be the reason for one loop being significantly more power hungry on an SP20?

One of the loops on my Spondoolies SP20 is misbehaving. I underclocked everything but this loop (number 4) does not seem to care what settings I make. It seems to be running at twice the speed (and ...
3
votes
0answers
124 views

GPU mining strategies (algorithm)

I am currently in the process of creating a fairly simple bitcoin miner for CPU and GPU (for demonstration purposes not for money earning). However I am having a little troubling understanding how ...
3
votes
1answer
78 views

Pros and Cons between Ripple payment verification and centralized authority's payment verification

I want to know the advantages and disadvantages between Ripple payment verification system and centralized authority's payment verification system.
3
votes
0answers
148 views

BTCJam API 500 errors

I am currently trying to set up an application using the BTCJam api. I think the api could be very useful, but I have been unable to get it to work fully, and since support isn't responding, I thought ...
3
votes
2answers
109 views

Getting historic exchange data through an API

I'm trying my hands on a trading bot, but I need a website to pull trade data for min. the last 3 days. This can be from any major exchange. Eg. the exact same as this: ...
3
votes
0answers
108 views

Is there a way to specify an invoice ID in Ripple URI?

In Ripple payment transactions we can specify an invoice ID that is used to make payments for a particular invoice. Is there a way to specify such an invoice ID in Ripple's URI scheme?

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