0
votes
0answers
7 views

Passphrase lost for my wallet.dat

Need help is unlocking my passphrase. I dont remember setting up one, but now there is a pasphrase. Eitherway I am unable to send out coins from my Litecoin QT to the exchange. Any help will be ...
0
votes
0answers
3 views

Can I force the Bitcoin core client to keep the blockchain on another drive instead of AppData/Roaming? [duplicate]

I have been profiling my disk space and found that the blockchain has become pretty big 25GB or so. I would like to force the core client to save the chain on another drive that is much larger. Is ...
0
votes
0answers
4 views

WIF Format and Storing Private Keys

I'm writing an Android app which will be storing private keys for Bitcoin and a few Altcoins in an SQLite database. To store my private keys, I was initially using the WIF. When I take them out of the ...
1
vote
1answer
15 views

Get a JavaScript notification when Bitcoin transaction arrives to a certain address

I'd like to implement a very simple address monitoring feature on a site I'm working on. I'd like to just be able to say "Listen to this address on the testnet for money to come in", and update the ...
-3
votes
0answers
35 views

What The Heck Do These Mean? [on hold]

I am relatively new to BitCoin and I have decided that I want to start mining them using my PC. While the 'BitCoin Armoury' wallet was downloading, I looked up some pools that I could join. Here's ...
0
votes
0answers
15 views

How can I refund from btc-arbs.com?

The title says all. I've invested some money in BTC-Arbs.com last year. Now it's down. how can I refund?
0
votes
0answers
23 views

Is it correct that more than 160 bits of input data for producing a private key are superfluous?

If this is true, when I make a 64 character hexadecimal private key I need only provide randomness for the first 40 characters (40 x 4 bits per character = 160). The remaining 24 characters can be ...
1
vote
0answers
22 views

Maximum number of transactions in wallet.dat for Bitcoin Core

I know that a large number of key pairs in wallet.dat is not a concern. But is having too many transactions in wallet.dat an issue? Can Bitcoin Core start crashing after it reaches a certain number ...
1
vote
1answer
19 views

Are time, timereceived and blocktime in UTC?

I read around about the differences between time, blocktime and timereceived, but one question remains. Although I assume all times are UTC, I haven't seen that mentioning specifically anywhere. Does ...
0
votes
0answers
14 views

When you sweep a private key at Blockchain can you sweep the key in HEX format?

It would be useful to know this because I have made a 64 character hex private key by hand and generated the address without storing the key in WIF format. I don’t want to go online, input the hex key ...
0
votes
0answers
9 views

what are BTR points in Bter exchange

what are BTR points in Bter exchange? Can we convert BTR into an alt-coin? If so, is there any fees they charge. How many times can I exercise this option for a particular month?
0
votes
2answers
45 views

Is there a way to buy bitcoin immediately?

I want to use PHP to write a script to buy bitcoins and my bitcoin balance will be updated immediately (i'm NOT in US). For example, I use my credit cart to purchase bitcoins. less than 1 min later, ...
1
vote
1answer
14 views

Any advantages in terms of our location & East-West timing differences for self mining on a 100 th/s btc rig

I do live in india.. I believe that bitcoin mining rig owners are very lessaound us ..I read some where that we will be able to mine more bitcoins while the west or far-east sleeps..
0
votes
0answers
29 views

Why should I pay in bitcoin as opposed to traditional payment methods?

Recently I have seen a few online stores starting to accept bitcoin as a payment method, but I can't think of a reason why I would ever want to pay in bitcoins. Since I get paid in GBP then I would ...
0
votes
1answer
22 views

Can I create a public address for Bitcoin without the private address appearing on the screen?

Is there JavaScript which will do this? I would generate a 256 bit password using 99 dice throws, enter it into JavaScript on an offline computer (like using bitaddress.org) and get an address to ...
0
votes
2answers
51 views

is it necessary to stay connected to internet [duplicate]

it could be a basic question for you guys, but i'm new in this. is it necessary to stay connected to internet while doing solo-mining ? is there any method to keep mining without permanent internet ...
2
votes
2answers
31 views

Can the service providing the bitcoin wallet know how much value has the user loaded into his wallet?

Say for example I run an ecommerce website which mandates users to have a min balance of 1 Bitcon in their wallets to access the platform. In the event the balance in his wallet falls below 1 Bitcoin ...
0
votes
0answers
7 views

can we create subjective trading platform using bitcoin and smart contract where payments are taken in stages?

Is it possible to create a subjective trading system (for eg: second hand goods like laptops, television cell phones etc) using concepts of bitcoins and smart contracts. Payments on the system would ...
-2
votes
0answers
17 views

BitcoinCZ Captcha [on hold]

Help when I am trying to log into my bitcoincz mining, I have to put in a captcha but no matter how I put it, it never registers and it says it is incorrect. Anybody have experience in this and can ...
2
votes
1answer
30 views

Are all private keys required to create a multisig bitcoin address

Do all 3 private keys in a 2-of-3 multisig wallet have to exist on the same device at some point in order to generate the bitcoin address? It would be ideal if the 3 private keys never existed on the ...
0
votes
1answer
17 views

Bitcoin packages

Are there any bitcoin package/librairies in popular langage that would make the recuperation of prices easy ? I have the exemple of the Quantmod package for R that allows you to get market data from ...
0
votes
0answers
14 views

Bitcoin in light of quantitative finance

I am looking for some reference on the Bitcoin market in light of quantitative finance. I am interested in some things: The market in general, how is it compared to other financial market ? It is a ...
0
votes
1answer
22 views

Getting transactions and time from Block Chain Info Api

I want to fetch transactions for an address from the following api: https://blockchain.info/address/$btc_address?format=json The thing is understanding the json returned from the api, I don't ...
1
vote
1answer
19 views

Test in a box duplicating addresses how come?

I copied the whole directory for bitcoin data and then ran two instances one for the first directory and the other for the copied one, and then I generated a new address from the old instance go to ...
0
votes
1answer
20 views

Bitcoin cloud trading

Is there a trading bots that trades automatically and can also be hosted by the company that is providing the service? I've found BTCRobot and Butter Bot. Any reviews on the validity behind these ...
0
votes
1answer
24 views

Which bitcoin miner ASIC can use without leave power on computer?

after search and read a lot of bitcoin miner posts in the web, yet I have one doubt before buy bitcoin hardware... I have read about ASIC Hardware of ButterFly Labs, Avalon, Knc, USB Erupter and ...
0
votes
0answers
19 views

BitcoinJS vs Armory

What are the pros/cons of using Armory vs BitcoinJS for a wallet service?
1
vote
1answer
10 views

What is the maximum character length when sending a NXT message?

I'm looking to see whats the limit of characters a nxt message can contain.
-1
votes
0answers
13 views

Influence of Bitcions [on hold]

What influecne do bitcions have on the economy and everyday life? What influence will bitcions have in the future on those things? I'm interested what you think.
1
vote
1answer
24 views

How does MultiBit figure out balance of an imported address?

MultiBit is a Simplified Payment Verification (SPV) client that uses the merkle root of block headers to validate transactions. I'm wondering however, when an address (private key) is imported into ...
1
vote
2answers
20 views

How long could you list a sell order?

Relatively simple question. Is it at all looked down on if I make a sell order at an exchange for a long time? For instance say I get some darkcoin and do the math to figure out how much of a return ...
1
vote
0answers
24 views

bitcoinj, unknown confidence level

I've got a bitcoin address A with its relative encrypted key K stored in a persistence storage. I am launching bitcoinj through the WalletAppKit class and calling awaitRunning to wait for the ...
2
votes
1answer
29 views

multi coin solo mining

I'm wondering about switching coins while solo mining? Does switching before I block is mined effect the odds of getting a block reward, or is it always essentially chance?? For example, if I mine ...
0
votes
2answers
9 views

Multibit application on Mac only showing 2/7 wallets

I've got 7 wallets created in Multibit. Since today, when i open Multibit it is only showing 2 wallets out of the 7 that exist. I've checked the files stored in user/Library/Application ...
1
vote
1answer
41 views

Critical Section in Satoshi client

Can you please point me to a tutorial for an explanation of the specific "Critical section" implementation that is used in main.cpp. I would like to understand a bit better how does it work. I studied ...
0
votes
0answers
35 views

I lost my computer, inside my hive wallet , I do have my adress and password can I recover my bitcoins?

Is it possible to login from other wallet with adress and password to get back my btc?
0
votes
1answer
34 views

Lost private keys. Help to recover

I have blockchain wallet but have lost the private keys of it, is tr any way to restore my private keys. Plz help
2
votes
2answers
36 views

Loyalty programs for Bitcoin transactions

Since it is possible to track the transactions in Bitcoin, is it possible to devise loyalty schemes?
0
votes
1answer
22 views

Need help about Mining and Difficulty levels! [duplicate]

I am new to these mining things and i want to know that, "What if the difficulty level increase?, would i make a loss with mining? I am mining $1 USD with 5MH/s server with the current difficulty." ...
1
vote
1answer
33 views

Why does the Bitcoin core client use so much CPU time while synching?

I have always noticed the huge increase in cpu usage when I opened my client for the first time in a few days. I was wonder what this is from? I would imagine verifying all of the signatures of the ...
2
votes
1answer
18 views

What current wallets support deterministic public addresses (BIP32)?

Just curious how many complete implementations of the bip32 standard exist.
4
votes
2answers
74 views

How can I have friend to send me money without possibility to see my balance?

How can I have friend to send me money without possibility to see my balance? When I give him address where to send bitcoins, he can use e.g. https://blockchain.info or http://bitref.com/ to find ...
0
votes
1answer
24 views

How are transactions efficiently distributed to network nodes before inclusion within blocks?

How does the bitcoin core efficiently distribute transactions so that they are added to node transaction pools to be inserted into a future block? I understand that each bitcoin node has a list of ...
0
votes
0answers
9 views

BTC China ruby api wrapper

I am trying to build simple BTC China client https://btcchina.com to get account balance for training and educational purposes. I know there is https://github.com/Lewis-Clayton/Kublai gem out there, ...
0
votes
1answer
10 views

What's the size of the last Ripple ledger and the indices to search through it?

What is the size of the current ledger and all indices required to efficiently search through it or query it? Also, how will this size grow relative to the number of Ripple users? Side-question: what ...
-3
votes
0answers
16 views

Anyone heard of BitcoinReward.net

Has anyone heard of Bitcoinreward? Signed up today and made some bitcoin but waiting on payment in the morning. Just seeing if anyone has used them and been paid yet? Thanks Oh, link is here: ...
0
votes
0answers
12 views

Peercoin: Can a client (node) mine using proof-of-work and mint using proof-of-stake both simultaneously?

Or can it only do one thing at a time i.e. either mine or mint? Let's assume that the client is running on dedicated ASIC hardware so that proof-of-work mining isn't an issue. If the above is ...
0
votes
2answers
48 views

if the cap is 21 million bitcoin does this mean that there will be only 21 million transaction ?

so as the tittle says , and if I got right , a bitcoin is given to the first miner who got the right hash , so with 21 million cap does this mean the limit of transactions is also 21 million ...
0
votes
1answer
37 views

Spend the coins of a given private key

What's happening when I use importprivkey? Are the coins merged to my existing private key or is the new key added to my wallet? I want to import a private key, receive funds on it, and send the same ...
0
votes
1answer
33 views

Blockchain command line tools

I was under the assumption that the bitcoind server allowed you to query the blockchain and run commands like bitcoind getbalance on any address. I'm finding out that you may query addresses in your ...

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