1
vote
0answers
3 views

Bitcoin purchases by country

I'm interested in getting data on bitcoin adoption by country. Is there a way of mapping bitcoin addresses to countries of origination? -Thanks
1
vote
1answer
10 views

Can you switch the method of blockchain download?

I torrented bootstrap.dat and used am using it to populate the blockchain. It is close to being complete, but my server has ran out of room. There is room for one copy but not enough for two. Is it ...
1
vote
1answer
27 views

Trading bitcoin with paypal?

Is it possible to trade bitcoin with paypal and stay anonymous? How the big trading sites are trading bitcoins and recieve payments with paypal and keep the users anonymous (because there isn't an ...
1
vote
1answer
31 views

Can't connect Electrum to a Network so that I can receive my bitcoins

I've looked everywhere for an answer but can't find the right one for my situation. I'm using the linux based tails OS with persistent setup with my electrum wallet. Everything works fine and LBC ...
-3
votes
0answers
9 views

How can i get Cheaper GHS? [on hold]

I can not find cheaper GHS than http://pbmining.com , it says in their site, 0.0026 BTC per GHS, and there is fees applied these contracts , can anybody advice more competitve site thx.
1
vote
0answers
11 views

How do you buy bitcoin using Perfect Money? [on hold]

Is there anyone who is selling or buying bitcoin through perfect money?(A Russian money payment system) Please help me out and enlighten me on this.
1
vote
0answers
12 views

How do coinjoin and sharedcoin work? How to make it make it hard to pinpoint bitcoin sender wallet

I would like to implement a way for bitcoin transactions to be untraceable. EX. user1 on my site wants to send bitcoins to user2. How would I go about mixing the coins so user2 doesn't get user1's ...
0
votes
1answer
23 views

Best way to anonymize bitcoin transactions?

https://en.bitcoin.it/wiki/Mixing_service How do sites like this work? "Mixing services". I know it can be broken and traced back with coinsuduko but how exactly does it wash your coins. I doubt they ...
2
votes
2answers
50 views

How to get correct block details url with block height on blockchain.info

I need to generate urls to block details page of blockchain.info when I have block height as input but cant find the relationship between block height and the number they are using in the url. Eg: ...
0
votes
0answers
13 views

Implementing Secret Sharing with an Encrypted Bitcoin Wallet

How would I implement Shamir's Secret Sharing Scheme with an encrypted Bitcoin wallet?
2
votes
1answer
12 views

How secure is calling bitcoind JSON-RPC from same computer?

I am wondering if calling JSON-RPC from the computer it is running on is secure. I read How secure is calling bitcoind JSON-RPC? and understand why it is insecure to do so from a different computer. ...
0
votes
1answer
5 views

Deprecation error on mac

I'm compiling on mac, and I get this error: unsigned char *SHA256(const unsigned char *d, size_t n,unsigned char *md) DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER; Why does this happen, and how ...
1
vote
1answer
27 views

Is it possible to convert Bitcoin Miner to Litecoin Miner?

I have 90Gh/s Bitcoin Miner and its almost useless for Bitcoin Mining with current difficulty. By changing the Linux software installed in it can I convert this Bitcoin Miner to Litecoin Miner? I am ...
3
votes
0answers
18 views

How to best structure Internal bitcoin payments within a webapp?

I'm building out a pet project webapp called CollaboTree, a big part of it is allowing users to set bounties for completing/collaborating on little bits of work. I'd like these micro payments to be as ...
1
vote
1answer
50 views

Orphaned blocks on September 13, 2014

I'm new in the Bitcoin World. Today I did my second transaction for just 0.005 BTC but 2 hours after, it's unconfirmed yet. The transaction is in the block 320385 and it is orphaned. I saw the ...
0
votes
0answers
14 views

How to determine coin's for ROI

Given, a coin has difficulty 'd', an exchange rate 'x'/BTC or 'X'/USD, and given that my hardware can do 'y' MH/s (scrypt), how would I determine best coin that I could mine ? Do I need to consider ...
0
votes
0answers
7 views

How is a NXT account address generated? Why do we need to send out a transaction in NXT to secure the address?

I'm setting up an account and noticed: The recipient account is an unknown account, meaning it has never had an incoming or outgoing transaction. To submit this request you must supply the recipient ...
0
votes
1answer
13 views

Cryptocurrency compile error

I'm compiling a SmallChange clone on Mac OS using the .osx makefile, and I get this error. What should I do? 'boost/assign/list_of.hpp' file not found
2
votes
2answers
72 views

Can an output be spent in the block in which it is contained?

Is a Bitcoin block containing both a transaction that funds an output, and another transaction that immediately spends the same output, allowed by the protocol? Does such behavior occur "in the ...
0
votes
1answer
8 views

reinstalled multibit wallet

I had to remove a copy of multibit wallet from my system & after multiple times of trying to get it to work on my 64 bit system I can now open multibit wallet. I guess when I removed the program ...
-5
votes
0answers
18 views

Bitcoin has no scalability vs NXT [on hold]

No scalability; Bitcoin/Litecoin and clone Alt Currency branches support architecture is fundamentally flawed. The block discovery difficulty and hash rate power/costs to mine coins has increased to ...
1
vote
1answer
18 views

Practical interpersonal address exchange

How can addresses be exchanged practically & efficiently between two users? Visually copying & keying them is impractical & faulty.
2
votes
1answer
23 views

How could block propagation time be reduced?

This website measures block and transaction time propagation.. At the time of writing, the time required for 90% of surveyed clients to get a block is about twelve seconds. (I just averaged the last ...
4
votes
1answer
22 views

Can I use Blockchain API to get number of transactions at BTC address?

When I go to blockchain to look at a BTC address I can see a count of the number of transactions that have been sent to that address. So can I use the blockchain API to get this information? I have ...
1
vote
1answer
13 views

Unable to install MultiBit 64bit version

How do I install the 64 bit version of MultiBit? I downloaded the MultiBit client that is supposed to be compatible with 32 bit & 64 bit but when I run the program it give an error message that ...
-1
votes
0answers
16 views

Butterfly Labs Jalepeno SHA256 5-6 Ghs minner [on hold]

just got given a Butterfly Labs Jalepeno SHA256 5-6 Ghs miner and am wondering what to do with it haha :P i have a few spare pi lying around and am new to the bitcoining comunity as i have spent ...
0
votes
0answers
20 views

Deterministic Key Generation: prove that address is in a sequence of your original seed

Lets say that someone wanted to prove they owned some metadata without revealing who they were. For instance, lets say they needed to prove they had owned a contract but that contract was in an ...
-2
votes
0answers
13 views

A noob's Q. about cex.io [on hold]

I just signed up to this site, cex.io, and as of my understanding now, this site requires me to have a minimal amount of BTC's to start making transfers within it, right? I mean, I can buy anything ...
1
vote
1answer
35 views

What are the equations to convert between bits and difficulty?

If we take transaction hash 0000000000000006770c3806960539ca83a24facbd99ea212f37f2a0e6a5629a for example. The difficulty as a 32 bit float is 50810339.04827648. The difficulty in bits as an unsigned ...
-3
votes
0answers
18 views

Payment Process in Pakistan [on hold]

I am Fahad Tufail from Pakistan. I am using bitcoin work. I need to payout request in Pakistan so please guide me and reply me soon
0
votes
1answer
20 views

Does outbound port have to be open to make an Json-RPC call

lets say i am making a json-rpc call with the following connection : $connect = new jsonRPCClient('http://user:password@ipaddress:9332'); does outbound port 9332 of the sender need to be open as ...
1
vote
1answer
35 views

JSON-RPC call to bitcoind error, 403 failed to open stream

I am trying to make a json-call to a VPS server that hosts my wallet and it is failing with the following error message : Warning: fopen(http://user:pass@ip:port): failed to open stream: HTTP ...
1
vote
1answer
19 views

PHP Coinbase Callback POST

I've a problem with the callback. The post data is not right, because the users cents is not update. My Code: public function bitcoin($secret) { if($secret == ...
4
votes
1answer
286 views

If a wallet has multiple addresses, is the money in the wallet or in the address?

In the standard bitcoin client (Bitcoin-Qt), they tell me the total money in the wallet. However, should I be able to see how much money is in each address? Does bitcoin money belong to an address or ...
2
votes
0answers
44 views

How long does it take for a transaction with 0 fees to be confirmed or rejected?

I have a problem with a transaction that has 0 btc fees: https://blockchain.info/tx/256301465d77affb6bc7087432a9130db48dd64efa28b0460fb674eda704f382 From what I understand, eventually this ...
1
vote
2answers
33 views

Obtain the information about a bitcoin address

I have a bitcoin address. How do I get it's balance and the amount of BTC (preferably in Satoshi) it's ever sent and received? I don't want to use any third-party bitcoin services, I want to do it as ...
0
votes
0answers
5 views

When purchasing an alias or updating account info, why does the transaction fee goto the NXT genesis account?

I thought NXT forgers (miners) were collecting the transaction fees whenever there was a nxt transaction. I looked at the blockchain and it seems that every time an alias was purchased or an account ...
1
vote
0answers
35 views

P2Pool still worth mining?

Folks, I've been mining with a locally setup p2pool setup using bitcoind v0.9.0rc1-beta, p2pool version 13.4-14-g7aa75ce-dirty and bfgminer on another host. Been mining for about 7 months with 6GH ...
1
vote
0answers
15 views

How would one audit that the mgwBTC - Multigateway assets are backed by 100% Bitcoins?

I am curious of how would one audit the mgwBTC multigateway for nxt to make sure they aren't doing fractional reserve. They say its backed by 100% deposits, but how can we verify such claims? i want ...
0
votes
0answers
3 views

What are the pros/cons of the Multigateway service on NXT?

I'm doing some research on the decentralized exchange multigateway on the NXT platform. I was wondering what are the pros/cons of this service compared to centralized exchanges like cryptsy?
0
votes
0answers
3 views

In NXT, which files store the contact addressbook data?

When upgrading NXT, which files do I need to copy over that contain the NXT address book contacts? What other vital files should i copy over from the old version?
0
votes
2answers
37 views

Multiple Addresses in one UTXO

The 'decoderawtransaction' RPC method of the Bitcoin-QT client gives a JSON object with an array of addresses in each UTXO. For example, when I run: decoderawtransaction ...
0
votes
0answers
16 views

What does this mean? RPC_CLIENT_NOT_CONNECTED = -9, // Bitcoin is not connected

I'm building a service which does some automatic Bitcoin transactions and balance checking. In the system I now created some logging, which told me that my bitcoind daemon (running on Ubuntu 14.04 ...
1
vote
1answer
27 views

How does blockchain.info get miner revenue?

In the stats page of blockchain.info, I see the revenue of miners is $1,680,297.91. As I understand, its the total money that people have spent on buying their miners. But, i doubt that since its a ...
1
vote
2answers
38 views

theoretical: mining without transactions

As fas as I know, mining means verifying transactions and thus keeping the bitcoin network alive. Today at a local meetup, some people have informed me that mining doesn't need transactions. They said ...
1
vote
0answers
31 views

bitcoin-qt stops subsequent RPC calls, then won't shut down

I am running latest bitcoin client, 0.9.2.1 - running on 64bit ubuntu.. I can start up the bitcoin client, via bitcoin-qt -server or bitcoind -daemon (both have the same behaviors).... ... once the ...
0
votes
0answers
9 views

How to generate the public Nextcoin key (NXT)?

There doesnt seem to be an API call that returns the public key for my NXT account (with which I have not sent out any coins yet). The NXT wallet does display the public key after I log in, but how ...
1
vote
1answer
29 views

Tracing solo miners and anonymity

Can one, theoretically, write a program that is similar to a solo miner but instead it just logs IPs of other computers on the bitcoin net to trace IPs that might have bitcoin wallets on them and then ...
2
votes
0answers
27 views

What are the analogous steps between transfer of value from buyer to seller with traditional P.O.S. solutions vs. with bitcoin

Recently I built a site that allows purchase of items with bitcoin, also paypal and credit cards. In testing I haven been struck by how different the experience of purchasing online with bitcoin is ...
0
votes
0answers
16 views

bfgminer on bitcoin-qt

I am getting this error and looking for guidance. Error : Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers config server=1 rpcallowip=192.168.1.* ...

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