0
votes
1answer
4 views

How can I request payment to a set of addresses?

I am building a payment processing service where a single payment may be split among multiple individuals. While it would be possible for me to write the service in such a manner that a customer pays ...
0
votes
0answers
9 views

Multibit password incorrect - what else can cause this?

I have my balance cash display on my Multibit account at left top of my account which was my last transaction. But to send it out to another bitcoin account, it keeps telling me that "The wallet ...
0
votes
0answers
8 views

Bitcoin Forwarding Services?

Anyone can tell me some bitcoin forwarding services? apart of blockcypher blockchain and block.io? Thanks!
0
votes
0answers
8 views

Do you receive interest on Peercoin if you use an online wallet?

I know Peercoin is proof-of-stake, but if I use an online wallet, will I receive any of the coins generated for my stake? Or do I have to have to download a desktop wallet?
0
votes
1answer
3 views

Is there any service/api for deriving HD wallet addresses from a master public key?

I need this for a tool i'm writing that generates a transaction history report. think: accounting, auditing, etc. The tool does not and should not have access to the private keys. Ideally, the ...
0
votes
0answers
11 views

Details of Bitcoin mining rewards [duplicate]

I'm looking for some details about how Bitcoin mining rewards are doled out. It seems like the world of Bitcoin mining is composed of CPU miners, GPU miners, ASICs miners, and mining pools. And it ...
0
votes
0answers
9 views

NBitcoin - get Transaction for address

I am making BTC wallet. My current task is getting all transactions for address. Is there anyone who can help me figure it out? I would really don't like to dig in blockchain or something like that. ...
0
votes
1answer
16 views

Using GPU mining with the Bitcoin Wallet

After asking this question about using the Bitcoin wallet to mine, I am wondering how I can get my GPU involved with the mining work? Is this possible? or this there other, non-pooling software that ...
1
vote
2answers
14 views

How does the bip32 version bytes convert to base58?

Converting the BIP32 version bytes - x04\x88\xad\xe4 - from base256 to base58 and base58Check returns 7irrX and 1kz713TZjju, respectively. I thought the version bytes represented xprv. What am I ...
1
vote
1answer
18 views

What if I backup my wallet from a client that is not fully synced with the blockchain?

I've just backed up an encrypted wallet, but the client (Bitcoin-Qt) is 26 weeks behind. During these last 26 weeks this wallet has only received BTC (roughly one transaction per day), no payments ...
0
votes
1answer
17 views

Do we need to maintain the ability to do a reorg over 100 blocks?

The protocol requires that freshly generated coins wait 100 blocks before they can be spent in order to avoid polluting bitcoin addresses with bitcoins that are "uncreated" by a reorg that invalidates ...
-1
votes
0answers
17 views

I want to make investment in BTC mining machine [on hold]

I have read some, I have do some calculation and I realize that Bitcoin would be very profitable. I want to ask you friends which is the best mining machine for 2015. I have looked the KnCMinner ...
1
vote
0answers
16 views

Fees when using leverage

I have been wondering how trading fees are actually calculated e.g. Kraken takes 0,35% of every trade. Does this fee apply both when I buy bitcoins and later when I sell them? Furthermore if I choose ...
1
vote
1answer
19 views

Is there a deterministic private-public keypair generator without the BIP32 private key revealing issue?

HD Wallets have a flaw that revealing a private key and its parent master public key will reveal its parent master private key. (Described here[1] and here[2]). Isn't there a similar concept with ...
1
vote
1answer
25 views

About traditional Bitcoin mining

I'm curious about traditional bitcoin mining, before pooling. Did an older version of the bitcoin wallet found on sourceforge have a mining feature built in which worked on a simple macbook? if so ...
0
votes
1answer
42 views

Problems with Blockchain API

Im having problems because when a user pay to a forwarding address, the forward address receives bitcoins instantly, but takes nearly 1 hour to send those bitcoins to the destination address, the real ...
1
vote
1answer
21 views

How are the assets locked and unlocked trustlessly using sidechains?

I am reading sidechains white paper and in section 3.2 Symmetric two-way peg they mention that: "The parent chain coins are sent to a special output on the parent chain that can only be unlocked by ...
2
votes
1answer
20 views

How can one extract an address balance at a specific height?

Is it possible to view the balance of an address at a specific height, without using any external web api? Could it perhaps be done using bx or the Bitcoin client API?
3
votes
2answers
61 views

Are blocks sent only after finding nonce?

One of the concerns with increasing the block size is that it may get orphaned more often due to network latency in sending the big block. Why can't miners send the block without the nonce as soon as ...
-1
votes
0answers
9 views

Bitcoin and make money? [duplicate]

How do you get start with Bitcoin and make money? I have visited many website and cannot figure out what I am doing. Thanks
2
votes
1answer
39 views

Is it possible to have my blockchain on a different folder than that of my wallet files?

I am trying to implement bitcoin payments for the project I'm currently working on, and I need to create a bitcoin wallet that should be inside a USB stick. This USB stick should be at the hands of ...
-1
votes
0answers
14 views

How do I connect GUIMiner to F2Pool?

How do I connect GUIMiner to F2Pool? It says "connection problems", how do I set it up?
2
votes
1answer
20 views

What does OP_CHECKSEQUENCEVERIFY do?

Some people have suggested repurposing OP_NOP3 as a new opcode, OP_CHECKSEQUENCEVERIFY. What would the new opcode do? Why is it useful? Can't the signer choose the sequence field when they sign?
1
vote
1answer
22 views

Why does my wallet size increase over time?

Why does the size of the output of      bitcoin-clibackupwallet or, equivalently, wallet.dat increase over time?
-1
votes
0answers
26 views

What would happen if I would forget my ID? [on hold]

What would happen if I would forget my ID? Is that number/number and those words enough to identify my account, or I need to know also the ID? Edit: Why does that ID change? Edit: ID = ...
1
vote
1answer
25 views

bitcoin compile error on CentOS 6.6: ‘SIZE_MAX’ was not declared in this scope

I am trying to run a bitcoind instance (branch 0.9 from git repository) on CentOS 6.6 following this guide but I get this error when building LevelDB: Building LevelDB ... make[3]: Entering directory ...
0
votes
1answer
53 views

Recommended bitcoin wallet for beginner?

I use Windows, Android, Chrome - what wallet would be best and safest for beginner? I would like it to run on both Windows and Android. Thank you.
0
votes
0answers
15 views

P2SH that pays out only to a certain Bitcoin address?

Is it possible to create a type of redemption script that when the correct number of signatures are collected pays out to a pre-defined address ?
0
votes
0answers
12 views

Unknown key format when importing Private Key from Multibit to Blockchain.info

I'm trying to import a Private Key from MultiBit into Blockchain.info, but get an error saying "Error importing private key: Unknown Key Format". Is my MultiBit key in the wrong format or something?
0
votes
0answers
15 views

Is there a comprehensive list of altcoins protocols natively supporting Multisigs?

For cybersecurity risk reasons, I desire to stay away from trading such coins on all exhanges not supporting multisig. Albeit, it is another matter for exchanges to support Multisig for such altcoins, ...
4
votes
2answers
102 views

Why are transactions separate in a block?

I'm just getting started looking at bitcoin and it's protocol, so this might be an incredibly stupid question. Why does bitcoin have a separate concept of transactions? Wouldn't it be better for each ...
0
votes
0answers
6 views

Multiple transactions from a single wallet in one block [duplicate]

I am trying to understand how it would be (and if it is) possible for a single wallet address to have more than one transaction in a single block? Does a previous transaction of a wallet address need ...
0
votes
1answer
33 views

Pegged transfer from private blockchain to sidechains - Issue

I am trying to do a pegged transfer from one of my private blockchain to a sidechains using sidechain-manipulation.py ...
-2
votes
0answers
11 views

captcha not working right. i am unable to sign-up [on hold]

hi sorry my english is poor. your captcha system on sign-up form not working right. i am unable to sign-up for wallet
1
vote
0answers
17 views

listtransactions returning duplicate transactions with category “Send” & “Received” both

I am facing serious problem in listtransactions call. I am getting duplicate transactions with "send" and "Received" category. For I have sent some bitcoins from 31zeoskE8zeyQARFEVzwJzsp7GQpLn5zhF to ...
1
vote
1answer
28 views

How can a share be 'harder'

I am on a pool that asks you to select a difficulty for your miner. How can some shares be harder than others if they are just a hash?
0
votes
1answer
39 views

Cheapest way to move money from MultiBit to Coinbase

After the launch of MultiBit HD, I decided to move from MultiBit to Coinbase. What is the cheapest way to transfer all my money from one wallet to another? Can I somehow export/import my key/wallet ...
1
vote
1answer
40 views

Can you include a signature in a bitcoin payment?

I know you can use the bitcoin client to sign messages (for which you own the private key) and verify messages from other public addresses. But can you actually embed a signed message into a ...
1
vote
1answer
17 views

Would a normalized, hashed, protected chainstate reduce miner storage costs?

Spending freshly generated coins is prohibited by the protocol until there are at least 100 blocks on top of the block from which they came. This is because the chances of a 100-block reorg is ...
0
votes
0answers
20 views

What ASIC miner companies have an unflawed track record? [on hold]

I know there has been much controversey in the past with ASIC companies not delivering. Which ones left around today are still reputable?
0
votes
2answers
35 views

Can i combine 2 devices to get more power for mining

As An example lets say i have 2 USB Miners each one has 16 GH/s can i combine these 2 to mine with 32 GH/s ? And if yes pls tell me how.
1
vote
0answers
4 views

How to enable bitcoin tips between bbPress forum users on Wordpress?

I'd like to offer all the users who post to my Wordpress site's bbPress forum the ability to tip each other in bitcoin. But how? -Thanks
0
votes
1answer
9 views

Decentralized Data Storage System in NXT - How do you disable the 2 week data pruning?

Currently the NXT platform has the ability to store data in its blockchain, whereby making it a decentralized data storage system. But the thing is that the data is purged from a nodes blockchain ...
-1
votes
0answers
17 views

How can I find the spending PIN for my bitcoin app?

I purchased bitcoin through a local ATM, and when I try to complete a transaction, I am asked for a PIN. How can I recovery my spending PIN, to complete a transaction? I have a bitcoin wallet that I ...
1
vote
1answer
21 views

Breadwallet: Recovery Passphrase

Breadwallet uses a recovery passphrase in case you loose your phone. I read that you can reimport your wallet using a private key only once and after that you have to export it again in order to be ...
1
vote
0answers
212 views

Is there a payment processing system allowing the client to pay in cash/fiat money?

I am total newbie and only need an advice on the existing payment processing services available. So far I have checked only Bitpay, and noticed that on its t&c it is said that the system ...
0
votes
1answer
22 views

Which altcoins have their own mobile friendly wallet created by the core devs?

Was wondering how many coins have their core wallet software that is accessible on mobile devices? 3rd party devs do not count. Only want a list of coins that can be used on mobile devices as this ...
1
vote
1answer
46 views

Is there a (potential) “Blockchain size problem”, and what solutions are available?

As more and more Bitcoin transactions are produced, the growth of the Blockchain may well, one day, become a problem for systems which want (need?) to store the whole blockchain. Storage usage ...
-2
votes
0answers
13 views

Framework for Valuing Volunteering Activities - Crypto Value for Volunteer Work & Community Tasks [closed]

Framework for Valuing Volunteering Activities - Crypto Value for Volunteer Work & Community Tasks The purpose is to provide a vehicle and framework for '''Co-operative framework''' for groups ...
-1
votes
0answers
11 views

Which exchange is the most secure? [closed]

I'm new to bitcoin, which exchange woudl you recommend to use that is least likely to get me into trouble?

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