1
vote
1answer
30 views

Why is two hours the maximum acceptable offset for Bitcoin transactions?

As far as I understand, Bitcoin transactions include a timestamp, but the only requirement is that they don't differ for more than two hours. But why two hours? For computers that are constantly ...
0
votes
0answers
10 views

What did Gavin mean when said minimum fees would be automatically suggested?

From the release notes of the Bitcoin version that introduced minimum transaction fees: ... note that we intend to replace the hard-coded fees with code that automatically calculates and suggests ...
0
votes
0answers
7 views

How do I access the Bitshares that I received from my Protoshares “snapshot”

I have had some Protoshares for a while. At some point (according to my fuzzy memory) there was a "snapshot" which gave me the right to Bitshares. I still have access to my Protoshares wallet but ...
1
vote
2answers
35 views

Where can I find a chart of the daily supply?

there is the blockchain.info one for total supply but that very low resolution. I really was a graph of the actual new bitcoin mined on the market on a daily basis because it seems like a strangely ...
0
votes
0answers
45 views

Bitcoin tutorial for beginners. [duplicate]

I am new to bitcoin and trying to learn it in hard way, but the problem is that i couldn't find any good tutorial site that teaches bitcoin for the beginners. Can you please help me to identify such ...
0
votes
1answer
14 views

How do I reset my TFA token in Coinbase?

I would like to move my Coinbase Two-factor authentication token from one device to another. I cannot find a location on their website to disable TFA once it has been set up, or to move the token to ...
1
vote
1answer
31 views

How can I transfer the last little bit from my Bitcoin Core wallet to Armory?

I'm moving my bitcoins to Armory because its deterministic wallets are SO much better for keeping good backups. But bitcoin core didn't make it easy for me to sent all my money - if I specified all of ...
0
votes
0answers
15 views

Getting all transactions that ever occurred for a bitcoin address

I know you can use various APIs to get the balance for a given bitcoin address, but is there a way to total all the bitcoin that were ever received at a given address? A so-called "transaction ...
0
votes
1answer
10 views

What does Bitpay's {“error”: “Invalid token”} mean?

I'm creating a web app that uses Bitpay for payments. I'm writing it in ruby (but that shouldn't matter), and have a class method bitpay_client with the body BitPay::Client.new('mYs3cretAPIkey'). ...
1
vote
1answer
18 views

What is the algorithm used to sign data within Nxt?

I understand that Nxt uses Curve25519 to generate pubkeys for user accounts, however, I can't find a reference that states what which signing algorithm/process is used for transactions and blocks. ...
2
votes
0answers
30 views

How can one prove the ownership of an address? [duplicate]

Is there a way to prove the ownership of an address without spending bitcoins? I Imagine something like signing some given data with the private key - how much would that weaken the security of the ...
1
vote
0answers
25 views

Predict multi signature transaction size

I was looking for answer everywhere. Basically is there any way of calculate multi-sig transaction size when the transaction is creating, before the signing procedure? I was trying to find any pattern ...
1
vote
0answers
35 views

Automatic transfer of funds between exchanges

I need to circulate money between exchanges automatically. I want to transfer cryptocurrency (BTC, LTC) between exchanges. I find that these exchanges have API calls for withdrawal options: Cryptsy, ...
2
votes
0answers
17 views

farmers quest to exchange goods and services

i would like to know the possibility to use Bitcoin for farmers to change good and services without ever to use of Money. We are trying to set a network between local farmers and would like to use ...
-2
votes
0answers
58 views

Logo: “Bitcoin accepted” but not “here”

One can find lots of logos on the internet that say "Bitcoin accepted here". In some contexts, including, but not limited to, selling things over the internet, it seems appropriate to omit that last ...
1
vote
0answers
15 views

If I import/restore a deterministic wallet into Bitcoin Armory, how far into the dynamic addresses does it look for transactions?

I see that in Armory, I can click on "receive bitcoins" any number of times, and it generates a new as-yet unused address every time. So I could potentially send coins to address 1000, and have 999 ...
0
votes
1answer
27 views

Bitcoin logo in LaTeX?

Is there a fairly simple way to include a standard-looking but not too elaborate "Bitcoin accepted here" logo in a LaTeX document?
0
votes
1answer
27 views

Significance of average block generation rate

I am stuck in this thought for a while regarding the block generation rate. My concern is, when a payer waits for 10 minutes to confirm that her transaction is included in a block, it suggests that a ...
0
votes
1answer
33 views

Is it possible to buy a licensed prop of one of the “bitcoins” you always see in the pictures?

Is it possible to buy a licensed prop of one of the "bitcoins" you always see in the pictures? LOL Does anyone actually make physical "bitcoins?" I collect weird iconic things.
0
votes
0answers
24 views

Can someone clearly, and in layman's terms, explain to me what my computer is doing when it mines for bitcoins? [duplicate]

What is the work it self that my computer does when it "mines" for bitcoins? Is it computing work for a third party? Is it solving meaningless puzzles or algorithms? Has anyone outside of those who ...
-1
votes
1answer
26 views

Has anyone verified what your CPU is being used to do when it “mines” for bit coins? [duplicate]

I understand that "mining" for bit coins requires your computer to do work that you don't monitor, so my question is, how do you know what it is that your computer is doing? Has anyone verified what ...
4
votes
3answers
51 views

Is it possible to create a transaction in pure python without needing to run bitcoin locally?

Lets say I have a bitcoin address that has 10 BTC sent to it. I also have the private key for this address Using Python (2 or 3) is there a way to create a signed transaction (which I believe is a ...
0
votes
1answer
19 views

Can I develop an API which will accept bitcoins and regular currency using existing API's such as coinbase and stripe?

Can I develop an API which will accept bitcoins and normal currency using existing API's such as coinbase and stripe? This API when used by a merchant should be able to accept both bitcoins and ...
2
votes
1answer
23 views

Can I transfer bitcoins generated in regtest mode to a friend?

I am running Bitcoin in regtest mode. Is it possible to send bitcoins generated in regtest mode to a friend ? (I only want to test it). Is it possible ?
-2
votes
0answers
21 views

Why can't some members vote on bitcointalk.org? [on hold]

I created a voting thread on bitcointalk.org but some members can't vote, they are relatively new members (activity = 3) but couldn't find anything about such a restriction. If there is a new member ...
1
vote
2answers
43 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?
1
vote
1answer
75 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
45 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 ...
2
votes
1answer
44 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 ...
1
vote
0answers
22 views

How do you buy bitcoin using Perfect Money? [closed]

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
14 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
38 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
56 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
16 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
18 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
30 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
26 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
56 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
16 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
10 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
14 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
75 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
9 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
21 views

Bitcoin has no scalability vs NXT [closed]

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
19 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
29 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
15 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
17 views

Butterfly Labs Jalepeno SHA256 5-6 Ghs minner [closed]

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 ...

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