0
votes
1answer
8 views

question on Armory bitcoin wallet scripting

Has anyone built the Armory Bitcoin wallet successfully and created the wallet using python and Armory as a library instead of using the GUI?
0
votes
0answers
19 views

Warning! this bitcoin address contains transactions which may be double spends

Hello i add bitcoin payment to my website with bitcoin daemon but one user have an error in blockchain.info: Warning! this bitcoin address contains transactions which may be double spends. You should ...
0
votes
1answer
10 views

What are spent transactions?

Satoshi's paper says (https://bitcoin.org/bitcoin.pdf): Once the latest transaction in a coin is buried under enough blocks, the spent transactions before it can be discarded to save disk space. ...
1
vote
0answers
8 views

In Ethereum, what is an uncle?

In Ethereum, what is an uncle? Why does Ethereum take this approach, instead of having a single chain of blocks back to the genesis block? If you mine a block, and it only gets included as an uncle, ...
0
votes
1answer
9 views

How do you spend a P2SH transaction?

I've been running into a lot of trouble getting a transaction to spend coins in a multisig address. I create the raw transaction When I go to sign, I get "Operation not valid with the correct stack ...
-1
votes
1answer
12 views

unspent outputs and change addresses

Their is one thing I do not understand about unspent outputs and change addresses. For example lets say a person has 5BTC in a wallet, and they have 2 unspent outputs of 3btc and 2btc. They one day ...
0
votes
1answer
10 views

multiple deposits using the same address for investment

i am new to the bitcoin thin and i want to know if i can keep the same adress for send and recive some money. I use multibit HD wallet. Beyond the line is what the help of he investment party tells me ...
0
votes
1answer
14 views

private key to wif - need help converting to base58encode (step 6 to step 7)

I am trying to learn more about how bitcoin addresses are created. I am following along with the tutorial at https://en.bitcoin.it/wiki/Wallet_import_format I undertsand how they do the first six ...
0
votes
1answer
29 views

Mysterious transfer of BC

Sent coins from one online wallet of mine to another Coins were immediately credited from the first wallet which now has a balance of zero, but did not appear in the second wallet. Mt initial thought ...
0
votes
1answer
13 views

How to add bitcoins in my wallet? [duplicate]

I'm new to this BTC world, one day someone offered me to pay using BTC and made me create a wallet on https://multibit.org I recently used it to pay for something online, and another transaction and ...
-1
votes
0answers
17 views

Using bitcoin on a site

A site has users that can deposit bitcoin into their account. I know that the Master Public Key allows a bitcoin address to be automatically generated. What I want to know is, How are withdrawals from ...
0
votes
2answers
13 views

Can Bitcoin Core be used to create a raw transaction for CLAM altcoin?

Clam is an altcoin that issued that altcoin to the owner of the private key of each and every Bitcoin address that had funds (0.0001 or more) on May 12, 2014. I don't want to install the Clam client. ...
0
votes
1answer
35 views

Creating a Bitcoin site

My question is this: Lets say I wanted to create a bitcoin site, where users register and can deposit bitcoins into their account. should i use my MPK to generate infinite addresses, so after a user ...
0
votes
1answer
9 views

Multibit notification

I have a blockchain.info account and I would like to move my wallet from the web interface to the multibit client. However, I need that once an incoming transaction have been confirmed I need to ...
0
votes
1answer
33 views

Shabal256 code explanation

Can anyone please explain the code below with comments? What are pbegin & pend ? What is ( I believe it is data, where it comes from ?): (pbegin == pend ? pblank : static_cast<const ...
0
votes
1answer
10 views

Account Addresses after moving wallet.dat to new computer

I reinstalled bitcoin on a new computer, and took my old wallet.dat file from an old pc that had v.0.3 of the bitcoin software. I had 2 receiving addresses when I started. When I typed ...
1
vote
0answers
26 views

Can i put Bitcoin Bitcore on Flashdrive?

I am a new user, Downloaded bitcore wallet and blockchain. I have received several bits of information of how much of a risk it is to leave your wallet live on the pc. I read about creating a cold ...
0
votes
1answer
15 views

Bitcoind listtransactions return only received transactions not showing send payment

I try to get all transaction of an account using this: listtransactions Ammadkhalid But this is show me received transaction not send here screenshot but in php:
2
votes
1answer
15 views

XPUB export from MultiBit HD wallet

Is there a way to to export/copy wallet's XPUB from MultiBit HD wallet (windows)?
0
votes
0answers
14 views

How to echo array into string in array of arrays in php orbitcoin wallet

I want to see the total balance of account in web wallet of orbitcoin but i can't find any solution so i want to use listaddressgroupings to see the total balance. But there are a arrays opening but ...
0
votes
1answer
14 views

How does the scriptPubKey for this test vector work?

The scriptPubKey for cbebc4da731e8995fe97f6fadcd731b36ad40e5ecb31e38e904f6e5982fa09f7 is: ...
0
votes
0answers
13 views

how to get total send balance of account in orbitcoin wallet?

I want to see my account balance in wallet using console but when i use getbalance test its only show me total receive balance? There is many account that i want to see total balance but i try ...
1
vote
0answers
10 views

GPU VanityGen with AES Encryption?

I'm getting back into Bitcoin and have started pooling savings together into a wallet. I'm moving on to cold storage and need to order some metal cards to keep safe somewhere. I need to generate an ...
0
votes
1answer
79 views

Have I lost my Bitcoins?

Ill start from the beginning. Im really new to bitcoins so being naive ive jumped in downloaded a wallet (bitcoin core) got my adress and set of buying 1 bitcoin. Now I bought the bitcoin and it all ...
0
votes
2answers
17 views

Where is the code making OP_RETURN a standard transaction type?

I am looking through the bitcoin github history. I am trying to find the commit where OP_RETURN became accepted as a standard tx. This was included in the changelog for Bitcoin Core 0.90. Any help ...
1
vote
1answer
26 views

Why aren't block solutions sent to a multicast address?

In computer networking, multicast (one-to-many or many-to-many distribution) is group communication where information is addressed to a group of destination computers simultaneously. I think the ...
2
votes
2answers
30 views

bitcoind and bitcoin-cli 'unrecognized', how can I access them from command line?

I have downloaded and installed the precompiled Bitcoin Core OS-X (also successfully synchronized). Every tutorial I have seen then directs one to begin using the executables bitcoind and ...
0
votes
1answer
6 views

How can I get the Fee involved in a Bitcoin transaction using RPC client (bitcoin-cli)?

I performed a bitcoin payment in the testnet, here is what I get when I execute bitcoin-cli gettransaction "11b8d5f89793e83e9e10b7ee51fa1b3445f6029f7d7efe4c82b3b261ec513a0e", as you can see the info ...
1
vote
1answer
29 views

I have lost my blockchain.info wallet identifier and used a fake email, does anybody know if its recoverable still?

I have the password and mnemonic phase, thanks so much for any help
0
votes
0answers
54 views

Writing a GPU Bitcoin mining client (learning purposes)

I want to write a basic GPU miner from scratch for learning purposes. By "from scratch" I don't mean that I am unwilling to use libraries but I want it to be similar to real GPU mining software, and ...
1
vote
1answer
20 views

Escrow Services [on hold]

Can anyone recommend an honest/reliable escrow service? With the ones I found searching the internet is that few of them are publishing their physical location so it's difficult to verify they ...
0
votes
0answers
12 views

Armory Bitcoin Wallet Code and GUI application

I installed the Armory application a few days ago, i downloaded the zipped file from the Armory site and install it on my Linux OS, today I found out that I can actually build from code. So I built it ...
2
votes
1answer
64 views

Are Bitcoins contained associated with a wallet or with an address in a wallet?

What I want to know is, if I have a wallet with several addresses containing 10 BTC (let's say 1 BTC per address) in total and I want to send 5 BTC to a person, but first generating a new address (as ...
2
votes
1answer
36 views

Scripts! But not really?

What is the purpose of a stackmachine if only some standard script forms are allowed? And why are some scripts allowed and perfectly fine in mined blocks but rejected by clients if found in ...
0
votes
3answers
111 views

How do I determine the value of new altcoins?

So, I'm curious about the value of altcoins. Let's say I were to create an altcoin, and get some people to use it... how would I calculate the value of the coin? Is this determined by exchanges? Or ...
1
vote
1answer
24 views

Continuous integration setup using bitcoind regtest on travis-ci

Subtitle: travis-ci fails to run generate JSON-RPC method on regtest I'm trying to setup CI process on https://travis-ci.org platform to install bitcoind and start new blockchain using regtest mode. ...
2
votes
0answers
13 views

Transaction ordering when one transaction redeems another within a block [duplicate]

Say we have txA and txB, and txB contains an input that redeems an output from txA. In order for a block containing both txA and txB to be valid, is it necessary that txB be after txA in the list of ...
0
votes
2answers
36 views

My miner doesnt show up on network but running?

I have an S3+ and yesterday it stopped showing up on my IP scan and connecting to my pool. It still runs the fan (very low speed though) and shows the lights for a network connection, so does my ...
1
vote
1answer
34 views

Can Bitcoin Days Destroyed be a better resolution mechanism for competing blocks?

I've been looking at selfish mining and empty blocks. In all cases, the selfish miner profits by keeping block solutions private until their value to his own pool is maximized, rather than releasing ...
3
votes
1answer
38 views

Is there an API that supports different Bitcoin wallets?

Is there an API that has sending and receiving functionality of different Bitcoin wallets such as Coinbase, Bitcoin wallet, etc... Or would I have to manually incorporate each wallet API myself?
1
vote
1answer
60 views

How to start programming using Ethereum?

I'd like to listen opinions of people that have created already their own working contract. What have you read at the beginning and then? What was the most powerful source that helped you understand ...
2
votes
1answer
43 views

Extortion attempt

If an extortion attempt is made telling the victim to deposit a specific amount to a bitcoin account "or else" what law enforcement agency takes lead? How can one determine the jurisdiction of an ...
3
votes
1answer
38 views

What are version bits?

What does Pieter Wuille's version bits proposal change? How does a miner signal support for a particular fork? Can the version bits system be used with hard forks?
2
votes
1answer
27 views

Does the block size issue also apply to Dogecoin?

Looking at https://bitinfocharts.com/ I see that Dogecoin has only 13% of the number of transactions per day that Bitcoin has (12,778 vs 94,166). I understand that makes block sizes less of an issue ...
1
vote
1answer
28 views

Always rejected shares (Antminer U3 / Minera /CGminer)

hope someone can help. I use an Antminer U3 on a Raspberry Pi with Minera and CGminer. When I mine everything with Scrypt-Algo, I get 100% rejected shares. My current pool is ghash.io. My log looks ...
-2
votes
0answers
32 views

There is something which to help bitcoin? [closed]

exist anything idea that we help bitcoin ? example i think must will create many services which will be legal and won't ponzi or scam . you can tell me legal idea that will be fine for people and ...
2
votes
1answer
37 views

Bitcoin Core V 0.10.0: Is there a way to force send when not synchronized?

My Bitcoin Core is not yet synchronized, but I already attempted sending a transaction, so now it is 'conflicted'. I can see this conflicted transaction is not being propagated. Is there a way to ...
2
votes
1answer
36 views

Why it is not possible for a payee to verify double-spends of the coin?

I'm reading Bitcoin paper of Satoshi Nakamoto (https://bitcoin.org/bitcoin.pdf). It says: Each owner transfers the coin to the next by digitally signing a hash of the previous transaction and ...
3
votes
1answer
53 views

Why does wallet.dat differ after running?

What information is exactly saved inside the wallet.dat file? When I run the bitcoin daemon, then stop, then compare the new wallet.dat file with the old one, the binary files differ, although I ...
1
vote
1answer
28 views

Checkout time for consumers in stores accepting bitcoins

If the general practice is use to different bitcoin address for every new transaction, does it mean that merchant in a retail store that accepts bitcoins has to change his QR code for every new ...

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