0
votes
0answers
3 views

Having problem implementing Electrum's BIP32 Key deriviation path

I'm trying to create a BIP32 storefront that uses Electrum's key derivation path. The user passes me their MPK, and with every order I generate a new address based on the MPK. I'm able to generate ...
0
votes
0answers
4 views

Is this pattern a tracking method or just a Bitcoin wallet making change to itself?

While following a particular transaction from a donation received in 2011 I noticed a pattern in the block chain. The entity donating would send .001 to an address and the remainder of the wallet ...
0
votes
2answers
20 views

What can a dishonest node do (or try to do)?

Except this kind of attacks: https://en.bitcoin.it/wiki/Double-spending For example can he simply create a new block that includes some invented transactions that steal money from real address? ...
0
votes
0answers
7 views

my bitcoins did not transfered to a hidden wallet

it appears that it was send but i never received them in the hidden wallet, is there a miss step i did not do? o how do i get them back? what i did was i took a picture of the QR code then i send the ...
1
vote
0answers
19 views

verify satoshi's git signature

the program i am writing to parse the bitcoin blockchain got stuck on block 251718. i hadn't yet implemented support for some of the opcodes in the txout script for tx 24 and i'm now in the process of ...
2
votes
2answers
202 views

Why are there so many confirmations?

A friend sent me Bitcoin to my blockchain wallet. It shows the amount as part of my balance. However, it says there are 108 confirmations and the number of confirmations keeps going up. Why is this ...
0
votes
1answer
11 views

Getting error when starting bitcoind in regtest mode

I tried starting bitcoind in regtest mode but got the following error. Command : bitcoind -regtest -daemon Output : Bitcoin server starting Error: Invalid amount for -paytxfee=: ...
0
votes
1answer
11 views

How does difficulty get rebalanced in Digitalcoin's Multialgorithm mining?

It appears that Digitalcoin has switched to mining with the three algorithms Scrypt, SHA256, and X11. I assume this means that the network will accept a block mined with either of the three ...
1
vote
0answers
26 views

Is Quark as secure as SHA 256?

I'm trying to make certain I'm understanding the purpose behind the Quark algorithm. There are lots of devices that need secure algorithms but have severe power and processing constraints such as ...
0
votes
2answers
45 views

Bought a bitcoin, sender said it was sent, not showing in blockchain or wallet. Where is it?

So I bought a full btc off of localbitcoin with amazon giftcard code. I sent the code and clicked that payment was completed. It's been about 2 hours. About 1 hour since he said that he sent the ...
0
votes
1answer
6 views

AntMiner S5 chain #2 intermittently operational

Why is my AntMiner S5 chain only intermittently operational? What could cause this, how could I diagnose it, and what is the solution? Will BitmainTech replace it for me? How do I know if it's under ...
1
vote
1answer
7 views

Bitcoin Wiki mirror?

Are there mirrors of the Bitcoin Wiki? (https://en.bitcoin.it/ is down.)
0
votes
1answer
12 views

Problems generating addresses using bip32

I'm trying to generate bip32 addresses using the following (the PHP version). https://github.com/prusnak/addrgen The author provides a test MPK which I can get working that looks like this: ...
1
vote
1answer
28 views

Why the same confirmed transaction in the Testnet has different block hash and other fields?

Chain.com http://explorer.chain.com/transactions/a4bfb8e21ae3d6232183dfb8ef5fcee8c9b8f223c2d25738e24765a75abd009b Chain.so ...
0
votes
2answers
21 views

Solo mining error

so i have been trying to set up my pc to solo mine for almost a week now. i am using bitcoin core and guiminer v0.10.2. i have gotten to the point where i can start mining, but when i do i get this ...
0
votes
1answer
13 views

Is it possible/feasible to send out large amounts of small transactions without paying fees?

How long would it take to process 1000 transactions from the same wallet, with outputs ranging from 100 bits to 1000 bits and no transaction fees for any of them? How about if 1000 of these ...
2
votes
2answers
36 views

How to make genesis block transaction spendable?

I read this question Why can’t the genesis block coinbase be spent? . It says because of some quirk (the genesis block coinbase transaction is not added to the global transaction database) genesis ...
0
votes
0answers
10 views

Dogecoin qt build compiling error libdb_cxx headers missing

When I run MSYS shell: ./autogen.sh BOOST_ROOT=../boost_1_55_0 ./configure --disable-tests i got the error error libdb_cxx headers missing
3
votes
2answers
181 views

What is a mBTC?

I have been trying to find out just what is an mBTC is. Everywhere I look I cannot find out what the value is compared to a Bitcoin. I was hoping you could advise me of what the value is.
-1
votes
1answer
38 views

Bitcoind crashes directly after starting

I'm am trying to solo mine. My first problem is when I try to launch bitcoin client as server with guiminer I get this error Invalid -rpcallowip subnet specifications.* valid are a single ip. I ...
0
votes
0answers
18 views

Where can I find a list of Gambling sites that accept Bitcoin / Atlcoins and also invest in their bankroll?

I was wondering if there was a site that lists all the gambling sites that accept bitcoin / altcoins and also ones that can invest in their bankroll?
0
votes
1answer
24 views

Exchanges whose websites use EV SSL certs?

What are all the Bitcoin exchanges whose websites have an Extended Validation (EV) SSL cert? EV certs appear green in Firefox. This is what Circle's looks like: The only exchanges that have EV ...
0
votes
1answer
26 views

wallet.dat file compromise

If the private key(s) are/is in the wallet.dat file, then isn't it overly exposed to hackers? Can't a hacker just read my C:[dir]\wallet.dat file and take all the bitcion?
0
votes
0answers
13 views

Stop Bitcoin Block ReIndex

I just recently installed armory an bitcoin-core. They constantly are using 100's of GB's of internet. Its getting annoying, because i cant really use the bitcoin if armory is constantly offline. I ...
1
vote
1answer
23 views

import btc electrum wallet into coinomi

can I import btc electrum wallet into my coinomi mulit-currency wallet app? They both use electrum servers and they both have seeds so it looks like they are a similar kind of wallet. In electrum I ...
2
votes
1answer
11 views

Source code for SPV node on iOS - where to start?

I'm working on a proof-of-concept for a blockchain project and at its core it will need a modified SPV node running on iOS. The reason I need to modify it is so I can build non-standard (e.g. ...
2
votes
1answer
23 views

BIP70 who issues the transactions, wallet or payment_url server?

The BIP70 specs I'm reading confuse me about who broadcasts the underlying transactions to the bitcoin network. My reading seems to suggest that both the user's wallet and the server at the ...
0
votes
1answer
31 views

How to login into my wallet?

I get my bitcoin address from freebitco.in. So how can I login into my wallet to know about my bitcoins? How to convert bitcoins into dollars and send it in to my prepaid debit mastercard?
0
votes
0answers
21 views

Open Source Hardware For Air Gapped Computer?

I'm looking for vetted open source computer hardware that can run Armory air gapped. Anyone know of such vetted hardware sources?
2
votes
1answer
88 views

Who runs the Bitcoin wiki?

Who runs the Bitcoin Wiki? What is their Twitter account? I am looking for the community, group or person who runs this site. Does this being have a Twitter account? The account @bitcoin_wiki ...
4
votes
1answer
20 views

Speeding up confirmation by double-spending a transaction stuck in mempool

In the context of no-fee transactions that can take a long time to get their first confirmation, is it possible to use raw transactions and double-spend the original transaction by broadcasting ...
0
votes
1answer
17 views

Electrum 2 validation: how is the HMAC always 01…?

Electrum version 2 creates a seed from a random number which is then encoded as a mnemonic. The seed is validated by checking that the hmac begins with the bytes 01 or 101 for standard and 2fa types, ...
1
vote
1answer
33 views

What is the value of these bitcoin certifications that have popped up recently?

Are bitcoin related certifications viewed favorably amongst the bitcoin community? I work in a related field and I am interested in pursuing a certification to distinguish myself, but I'm not sure how ...
1
vote
1answer
24 views

Why does Bitcoin-QT not seem to be catching up on my Mac?

I've had Bitcoin-QT running for about six total hours, and the rate at which it's catching up is glacial at best. It takes about an hour to advance a week, which would make the process take about 4 ...
0
votes
1answer
18 views

Multibit Private Key Restore

I backed up my private key and restored it into a new copy of Multibit (difference machine). The import was successful but the public key address has not been updated with my previous address. I've ...
0
votes
0answers
9 views

Sent 27.0003 Quarkcoins from my mining wallet to my secure wallet, but the transaction never arrived

I had three PC's mining on three different Quark wallet ID's. Every month I send the earning to a second non mining wallet. I used the same wallet address as the past 3 months for the 3 accounts. Two ...
0
votes
1answer
33 views

Erroneous blockchain transactions…more coins than I specified!

This isn't directly related to Bitcoin; rather this is related to Infinitecoin, however the technologies are virtually the same. The other day I sent 2,000 IFC from my wallet (Infinitecoin-QT for ...
2
votes
2answers
22 views

Avarage block size

Has someone calculated the avarage block size (e.g., for a day)? On blockchain.info there are a few blocks listed with their size, on the top of the page :/
0
votes
1answer
34 views

How can I run bitcoind in pruning mode?

I read this comment: You could consider running a pruning node, which is practically the same as a full node (including security), except it throws away some of the old history. Version 0.11 ...
2
votes
1answer
63 views

Blockchain over 36GB and causing disk space issues

I want to install the bitcoind daemon on a computer with relatively little free space (about 35GB available). I thought that the blockchain was some 20 GB in size and figured that would be no problem, ...
3
votes
1answer
28 views

ELI5: What's the difference between a child-key and a hardened child-key in BIP32

I've read BIP32, and I do understand it more or less. Could someone please explain to me live I'm 5 years old what the difference between a child-key and a hardened child-key is? I'm trying to add ...
1
vote
1answer
22 views

What does Bitcoin Core's “Coin Control Features” do and how do I use it?

What is Bitcoin Core's "Coin Control Features"? How do I use it, and what can I do with it?
0
votes
1answer
21 views

Public API to verify transactions to a unique address as they occur?

I'm creating a WordPress plugin for bitcoin donations. I want it to behave similar to the checkout process for many bitcoin shopping carts, where the QR code is displayed then once the user scans and ...
0
votes
1answer
25 views

I have a merchant that only takes bitcoins can I just put the correct amount in the wallet and then pay them?

I want to pay a merchant who only takes bitcoin payments. Do I create a wallet and only put in the amount of the price and pay with it? If so then what do I do after I send it to the merchant?
0
votes
0answers
7 views

Where to get a list of NXT public open nodes where I can use to query its API?

I'm building an application that needs to connect to the NXT NRS server to query its API. Is there a list of publicly open nodes that I can use? I understand the security risks, which is why I plan ...
0
votes
0answers
17 views

sendtoaddress() rpc-api call takes too long to execute

I'm developing web-application which utilises bitcoind rpc-api via https://github.com/sinisterchipmunk/bitcoin-client. Sometimes sendtoaddress call takes more than 30 seconds to execute, while other ...
2
votes
1answer
25 views

Bitcoin API with mixing service

I'm looking for an API that can hide where my received money goes, for privacy reasons. I don't want my customers to be able to see how much money I've received. Blockchain used to have a mixing ...
0
votes
0answers
17 views

easybitcoin.php and bitcoind issue. Can't get balance of address. Need help

require_once 'easybitcoin.php'; $bitcoin = new Bitcoin('username','password'); $addy = '1HB5XMLmzFVj8ALj6mfBsbifRoD4miY36v'; $block = $bitcoin->getblockcount(); $block2 = ...
0
votes
1answer
35 views

Call function for block n on blockchain

I've been going through main.cpp in order to roughly find out which function calls the best block and I found out depending on situation there are several similar-sounding function names and code ...
1
vote
1answer
19 views

Sample programs written using python-bitcoinlib?

Where can I get source codes of programs written using the python-bitcoinlib?

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