0
votes
1answer
8 views

LTC Pool With Friends?

Is there a way I could set up my LTC mining pool so that my friends could join? I've been having really good luck lately!
0
votes
1answer
9 views

What roles of WIF(Wallet Import Format)?

I am reading "Mastering Bitcoin" written by Andreas and I found this explanation about "WIF(Wallet Import Format)" Key Formats Both private and public keys can be represented in a number of ...
0
votes
0answers
7 views

Downloaded electrum, restored an old wallet, now BTC are stuck. How can I get them out?

How can I send them or reset password? Everytime I try to send it says invalid password. I tried by a couple different ways without luck. I deleted the wallet. Then I downloaded again and created ...
2
votes
1answer
22 views

Is there a fixed order for all transactions in the block chain?

Every block in the block chain contains a list of transactions. This list has a certain order which is basically set by the miner introducing the block. The merkle root in the block header requires ...
0
votes
0answers
9 views

Has anyone ever used LibertyX?

I have recently heard of LibertyX (libertyx.com)which is buying bitcoin in person at certain retail locations. It has a similar vibe to localbitcoins however they only accept cash. Has anyone used ...
0
votes
0answers
21 views

-25 when pushing multisig

I am trying to push this correctly signed 2/3 multisig to the network (based on Gavin's example) and I get RPC_VERIFY_ERROR = -25, //! General error during transaction or block submission: { ...
0
votes
0answers
3 views

Any efficient way to broadcast pending transactions?

A user creates and signs a transaction & broadcasts it to his linked-peers, the peers then rebroadcast it again without necessary receiving an inv message, then creating a flooded network with ...
0
votes
1answer
19 views

pycoin command line transaction

Is there a quick way to do transactions knowing only the private key(secret exponent) and the destination address, preferably from a command line utility such as pycoin? I am using Debian/Ubuntu and ...
1
vote
1answer
124 views

Bitcoin spend before received

When browsing the Blockchain I came across this address. It seemed peculiar to me, that the amount of 0.6 BTCs has allegedly been spend before received. Is it because the "receiving transaction" ...
1
vote
1answer
7 views

What are pros and cons of txindex option?

I am reading "Mastering Bitcoin" written by Andreas and I found this explanation about "txindex option" Transaction Database Index and txindex Option By default, Bitcoin Core builds a ...
1
vote
0answers
10 views

Is there a source for historical LTC trades available?

From bitcoincharts.com can download historical trade histories for BTC on various exchanges vs various currencies. Where can I find something comparable for LTC? I want to get historical trades ...
0
votes
0answers
22 views

Bitcoin Core shows error message

I have used Bitcoin Core for over 02 months it ran so smooth, but today i open Bitcoin Core and it show error message like this image: Bitcoin Core (OSS GUI client for Bitcoin) has encountered a ...
1
vote
0answers
30 views

Can an exchange work which does not have control of the private keys?

It seems like there is really no great way to exchange USD for BTC. Having to trust an exchange with your private keys is undesirable. I'm wondering if there is a way to utilize the convenience of ...
0
votes
0answers
12 views

New user looking to purchase bitcoins [duplicate]

So I am new to this whole Bitcoin deal, how do I get my own bitcoins?
0
votes
1answer
51 views

What is a block?

I know bitcoin has a block chain that is from my best representation a list of blocks. I know the block holds many transactions. But i'm still very much lost as to what a block is and how a block can ...
1
vote
1answer
31 views

What is criteria of mining priority except for transaction-fee?

I am reading "Mastering Bitcoin written by Andreas" and I found this explanation of mining. Transactions are added to the new block, prioritized by the highest-fee transactions first and a few ...
-1
votes
1answer
21 views

PCI Riser causing GPU to crash

I just got a new PCI extender (which is a flexible one) for my graphics card as I've built my own custom "desk pc". Now I don't really mine on it, but I do play games and whenever I start playing for ...
2
votes
2answers
33 views

If block sizes go up, won't sigop limits have to change too?

Gavin Andresen, one of the core developers, has discussed increasing the block size to 16.7 MB (and doubling that every two years). The maximum number of signature operations per block is currently ...
1
vote
1answer
12 views

Ability to Send Bitcoins to an Address over a duration of time

Is there a service or upcoming feature which lets you send Bitcoins to an address over a duration of time? I can write a script myself to send 1mbtc every day to an address and leave it running on my ...
2
votes
2answers
42 views

How do you send to multiple addresses by paying a one time fee? Which wallet supports this?

I have 20+ addresses I need to payout to. How can I send to all of these addresses without having to do it one at a time and paying a fee for each? Which desktop and mobile wallet supports this type ...
1
vote
0answers
25 views

Is it possible to run a simple attack on a previous version of the client in testnet mode?

I need to simulate an attack locally or in testnet (if possible) for academic purpose, on an old and bugged version of the bitcoin core client. I am in posses of test BTC in the last version. I want ...
1
vote
1answer
27 views

I'd like to connect an LKETC USB Scypt Miner to my Raspberry Pi. Help?

I am new to bitcoin mining, but pretty good with technology as a whole. As a Father/Son project, I recently purchased a couple of USB LiteCoin Scrypt miners (I bought them here: ...
0
votes
0answers
16 views

Fatal error: Uncaught exception 'Exception' with message 'Invalid Response'

Fatal error: Uncaught exception 'Exception' with message 'Invalid Response' in C:\xampp\htdocs\jsonRPCClient.php:155 Stack trace: 0 C:\xampp\htdocs\jsonRPCClient.php(87): ...
3
votes
0answers
19 views

Is it possible to make PoW ASIC-resistant through dynamically generated hash chains?

Bitcoin's static proof-of-work function SHA256(SHA256(data)) was apparently easy enough to be implement as ASIC which lead to the re-centralization we see today. But what if the PoW function changes ...
0
votes
1answer
17 views

Signature on transactions with multiple inputs

My question is that, suppose there is a txn tx(k) paid from user u to v, that refers two txns tx(i) and tx(j) as it's inputs. Also, both these inputs are meant for different public keys of u, say, ...
1
vote
2answers
46 views

How to use the bitcoin client without downloading the blockchain?

I would like to be able to use the bitcoin python client to be able to do things like sign transactions offline, create transactions, create multisig transactions, etc. Is there a way to do this ...
1
vote
1answer
11 views

JSON RPC can't connect

Warning: fopen(http://...@(removed):8332/): failed to open stream: Connection refused in /home3/cryptxe/public_html/application/libs/jsonRPCClient.php on line 105 Fatal error: Uncaught exception ...
0
votes
0answers
24 views

Bitcoin-QT blockchain: your speed experience with using any HDD connected via USB2.0 with TrueCrypt?

Background (I've never used bitcoin before.) I have Bitcoin-QT 0.9.3 (zip version). bitcoin-qt.exe sits on the internal HDD of my laptop. All of the other stuff (blockchain, wallet,...) on a 128GB ...
0
votes
1answer
39 views

What does it mean when a block is “kicked”?

While mining on a NOMP mining pool, I noticed that when you add the confirmed blocks and pending blocks together, they rarely add up to the total blocks found. It is my understanding that the missing ...
3
votes
2answers
450 views

How is that concurrent miners do not subvert each other work?

Every time new block is added on top of block chain, the miners have to restart their work because next block has to have proper reference to previous block. Lets suppose that there is some nonce for ...
0
votes
1answer
33 views

Given a block, is there a list of all hashes for all possible 2^32 nonce values?

I am working in a computational research lab, and we're taking a look at Bitcoin. I'm trying to develop a simulation of Bitcoin mining for a nonexistent computer architecture. I want to simulate the ...
1
vote
1answer
25 views

How to reissue a currency you own in NXT Monetary System (Sidechains)?

I registered a monetary system currency on the NXT platform and made it exchangable as one of the properties. But now I want to make it reservable for a crowdfunding campaign. How do you reissue the ...
1
vote
1answer
26 views

Is it necessary for all miner to reset minig when the tip of blockchain has chenged?

Each block in blockchain contains a pointer to previous block (block header). If multiple blocks reference certain block as their parent, only the one that is part of longest chain is accepted. ...
3
votes
2answers
45 views

How are unconfirmed transactions divided into different blocks?

According to https://bitcointalk.org/index.php?topic=216938.0 one transaction can only be contained in one block. If I understand correctly, miners can freely decide what transaction they include in ...
0
votes
0answers
36 views

How can counterparty tokens be distributed?

When a new counterparty token is created, are they all created at once? Or can there be a custom distribution schedule? Basically, I'm wondering if all counterparty tokens are centrally distributed or ...
1
vote
1answer
21 views

How do text, scripts, and other information get embedded inside the blockchain?

Someone recently suggested that scripts could get embedded inside the blockchain and executed independently by designated machines. What exactly can get stored inside the blockchain, and what are the ...
0
votes
1answer
44 views

Wallet gone, how to get it back?

So I had my Bitcoin wallet at Multibit and due to computer problems I formatted my hard drive and the wallet within it. I have no backups of the wallet, I have only my account name. Are my Bitcoins ...
3
votes
1answer
295 views

Can a shorter chain overcome a longer one?

Could a dominating chain fork actually be shorter (in blocks) than its abandoned predecessor? Under what circumstances could this happen?
2
votes
3answers
71 views

How to invest in a bitcoin startup

Is it possible to invest in a bitcoin startup/company without being an accredited investor? Say for example I would like to invest in coinbase.com, is this possible?
0
votes
1answer
35 views

I just made my altcoin, should I list my source code at Github?

It seems to me that every new coin introduced, they list source code in Github. Is that customary in the industry?
1
vote
2answers
46 views

Are there any stochastically dependent proof of work algorithms?

In bitcoin, the probability of discovering a block on the X-th hash is the same1 as it is on the Y-th hash. As such, the probability of discovery is stochastically independent. Are there proof of ...
0
votes
0answers
20 views

Credit card to buy any coins without fees?

Everytime I buy any type of coin, I notice 5% fee with my Visa credit card. Are there any type of coins that I can buy without having to pay a fee?
0
votes
0answers
54 views

Where did my bitcoin go, how do I recover it

I sent a pal of mine some BTC in 2 different transactions but for some reason the 2nd one hasn't shown up yet. My wallet https://blockchain.info/address/18qB9xTgjJFyFaQwGsq44TGSvePsksoaWr His address ...
3
votes
1answer
53 views

What were the dates of Bitcoin's previous price plummets prior to 2015? What articles were written about it?

As of Jan 2015, the price of Bitcoin has plummeted from 300ish to 200 since the summer of 2014. This wasn't the first time happening to have the price plummet in such a state where mass media starts ...
1
vote
2answers
32 views

Wallets that support 40 byte message attachment via OP_RETURN? Desktop / Mobile?

I see that many new Bitcoin 2.0 apps are making use of the additional OP_RETURN parameter for attaching data. I see that max limit is 40 bytes or roughly 40 characters? My question now regarding ...
1
vote
1answer
39 views

Is there a way to reindex from disk but not start from blk0000.dat?

While my Bitcoin-Qt was synchronizing, I ran into the following error: It first loaded full blocks from blk00000.dat to blk00217.dat file (with file size about 131 MB per file). Then Bitcoin-Qt ...
0
votes
0answers
18 views

blockchain.info websocket: Error code = 1006, Unexpected end of stream

I am using javax.websockets to have a webSocket connection with Blockchain.info, except that it closes down after random intervals, and I can see the close reason as: 'Unexpected end of stream', ...
1
vote
0answers
14 views

Database error when installing Coinbase's Toshi with Docker

I'm trying to install toshi over docker and am using an AWS RDS DB for postgres. After running docker build -t=coinbase/toshi . on an AWS ec2 instance I attempt to run: sudo docker run -e ...
0
votes
0answers
13 views

Recovering from a collapse in network mining capacity [duplicate]

What would happen if 90% of the Bitcoin mining capacity abruptly left the network (say, because a price collapse made it unprofitable)? From what I can tell, the immediate impact would be that ...
8
votes
2answers
1k views

How do wallet developers earn money?

Does anyone know how the Bitcoin wallet developers earn money? Do they live on only donations? Is it possible to survive on only donations? Why would they develop wallets if they don't make any ...

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