0
votes
2answers
41 views

Is Bitcoin a developer only currency and community?

The Bitcoin repo on Github has 7 members. Ultimately, they decide what bug fixes and pull requests get merged. I don't understand how this is decentralized? Yes, it is open source, so anything they do ...
1
vote
0answers
16 views

How to detect a rejected transaction?

If the nodes I connect to don't support the BIP 61 reject message, how do I know that my transaction was eventually rejected by the network (e.g. due to my bugs)? Is there any timeout or whatever ...
0
votes
2answers
27 views

getbalance not working

I am getting this error when I type getbalance: error: {"code":-1,"message":"std::bad_alloc"} Basically, I type getbalance and wait for about 2 minutes and this error appears finally. What does it ...
4
votes
4answers
165 views

How can I search for transaction text on the blockchain?

Is there a google like search engine which can search for any text that is included with a bitcoin transaction? As I understand it each transaction includes 80 characters of text as well. Update It ...
0
votes
2answers
38 views

Payee identity verification

When reading the Bitcoin paper by Satoshi, I noticed that he didn't mention any protocol by which the payer can verify the payee's identity, i.e. he is indeed paying the intended recipient. I would be ...
0
votes
0answers
25 views

Overview of Blockchain 2.0 smart contracts for the layman?

I have a pretty good understanding of how the Blockchain secures data using hashed inputs of the previous block and being secured by the P2P distributed network. What I'm interested in is a layman ...
0
votes
0answers
14 views

BIP32 wallet sync with Bloom filters

I'm working on my SPV library and I still have a hard time figuring how to approach the BIP32 + Bloom filters combination. Here's how I currently sync an existing HD wallet (after fast catch-up): ...
0
votes
1answer
30 views

Why does the script contain the hash of the public key

The ScriptPubKey contains the hash of the public key, and this is compared to the public key in the ScriptSig. It is not possible to derive the public key from the hash (address). But when the output ...
3
votes
2answers
94 views

Defeating email spam with Bitcoin

There was a paper somewhere proposing a scheme for filtering email spam with the use of Bitcoin micropayments. I can't remember where I saw it and can't find it now. Anybody knows about it?
0
votes
0answers
3 views

How can I view all the NXT nodes that I can access publiclly?

Where can i find a list of NXT IP nodes that I can connect to publicly? I want to be able to use them as a backup connection to the nxt blockchain if my own nxt server crashes.
3
votes
1answer
62 views

New to Bitcoin - tips on securing my server

I regard myself as being a competent programmer and have good general IT knowledge; however I know very little about BTC. I just want to make sure that my setup is "generally secure" and that I'm ...
3
votes
3answers
64 views

Bitcoin vending machine

If I wanted to build a vending machine where one could buy a cola paying with bitcoin, is the following scenario the typical way to do it? Customer approaches the machine, and selects the product ...
1
vote
1answer
27 views

Running Multiple Full Nodes on one Host

simple question. I would like to run several full nodes for Bitcoin, Litecoin, Darkcoin and so on, but don't they run on the same port (8333)? Will this just work or do I need to give them several ...
4
votes
1answer
111 views

What does “Safe mode: Warning: The network does not appear to fully agree! Some miners appear to be experiencing issues.” mean?

My bitcoind client that runs on testnet has started returning a lot of errors today. It has been doing so for a few of hours (as of 2014-08-29 9:50 UTC). When I call it via RPC, I get the following ...
0
votes
1answer
44 views

Passphrase lost for my wallet.dat

I need help to unlock my passphrase. I don't remember setting up one, but now there is a pasphrase. Eitherway I am unable to send out coins from my LitecoinQt to the exchange.
0
votes
0answers
6 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
1answer
18 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
48 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 ...
0
votes
0answers
17 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?
1
vote
1answer
53 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 ...
2
votes
0answers
32 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
2answers
24 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
16 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
18 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?
1
vote
2answers
68 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
17 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..
2
votes
2answers
75 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
26 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
63 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
48 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 minimum balance of 1 bitcoin in their wallets to access the platform. In the event the balance in his wallet falls below 1 ...
1
vote
0answers
18 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 ...
3
votes
1answer
64 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
22 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
16 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
29 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
24 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
23 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
40 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
27 views

BitcoinJS vs Armory [closed]

What are the pros/cons of using Armory vs BitcoinJS for a wallet service?
1
vote
1answer
12 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
vote
1answer
26 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
28 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
37 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
42 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
38 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
39 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
3
votes
2answers
40 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
27 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." ...

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