0
votes
0answers
28 views

How to mine using bitcoinJ?

I'm using bitcoinJ to create a custom wallet that works in Java, but I don't have any idea to mining using bitcoinJ. Anyone have any idea? Thansk for advice!!
0
votes
4answers
731 views

How can I withdraw my bitcoins from my blockchain wallet and convert them into cash?

I tried to withdraw from my blockchain wallet from blockchain, but I don't understand how to convert to cash and withdraw to the financial establishment available in my country.
-1
votes
1answer
58 views

Does this mean it's mining? [duplicate]

I'm using my personal computer and trying to mine bitcoins. I'm rather new to this and was wondering if I did everything alright. Thanks in advance.
6
votes
2answers
103 views

Estate planning: how can I ensure my bitcoins are inheritable?

What are good ways to ensure my bitcoins can be inherited by my family when I die or become permanently incapacitated? I think there are probably two significantly different situations to account ...
0
votes
1answer
49 views

Is there a legal way and free way to open a Bitcoin exchange in the United States?

I've been doing some reading on the state of starting a Bitcoin exchange in the United States, and I have a couple of unanswered questions. 1) What are the legal fees and process for starting a ...
2
votes
2answers
22 views

Ubuntu - Show active connections?

How can I see how many active connections there are on Linux?
1
vote
2answers
60 views

How do the faucets earn money?

There are quite a lot of bitcoin faucets on the Internet. They give away bitcoin for free, but where do they come from? Won't the faucet operator lose money?
2
votes
1answer
53 views

What happens to price when the block reward is gone completely?

What will happen, specifically to the price of Bitcoin and transaction fees when the block reward drops to a negligible amount? Today, each block reward is approximately worth 25 * $300 = $7,500. To ...
0
votes
0answers
24 views

How to get receiving transaction information from bitcoind (bitcoin server)

I installed bitcoind on a vps and generated an address I sent some bitcoins to from Blockchain.info wallet. One day later, I still don't see any info about it in bitcoind while there are now 75 ...
2
votes
2answers
319 views

Blockchain - How can I cancel my blockchain transaction, unconfirmed after +1 day

I am using blockchain.info. I have made a bitcoin transaction of 4.79 BTC to the address 1DWaEfPbcKQvjMi9D9eNMrVRQzWiSLVvaS. (exchanger) You can see the transaction at ...
0
votes
0answers
13 views

testnet pay per share mining pools

I was wondering if there are any testnet mining pools that are active, or is all of the current hash power on testnet (about 3 Th/s) all from solo miners. I would like to be able to get a bit of ...
0
votes
1answer
23 views

Using the blockchain for providing other services, besides bitcoin transactions

What I have in mind are proof of existence software, than are a kind a non-centralized and virtual notary service. They time-stamp digital information submitting a hash to the blockchain. I know ...
0
votes
0answers
32 views

I cant connect to bitcoin

I can't connect to bitcoin, tried everything, googled extensively and tried but can't resolve. I have a bitcoin.conf file created but I am not sure it is being accessed during the run of "hello.php" ...
1
vote
0answers
27 views

bitcoin:uri for sending payments to multiple addresses

Lets say I want a donate bitcoin button/QR code to send to multiple recipients in different ratios. As in send 50% to wallet 1. Send 25% to wallet 2. Send 25% to wallet 3. Is there any way to do ...
0
votes
1answer
44 views

Why wont my bitcoin miner detect any of my hardware

I recently set up a bitcoin miner on my gaming pc just to test it out and I cant seem to get is working. I am using bfg miner on ubuntu and when I start it up it says this: NO DEVICES FOUND: Press ...
0
votes
0answers
9 views

how to tell if a pool is not working

I have been trying to mine on testnet just for fun, and I ran across a testnet mining pool http://testnet.tbdice.org. Using cg miner, I was able to connect to the pool; however all of my shares are ...
3
votes
0answers
39 views
+50

Trying to understand how bitcore-node stores the data in the DB

I'm looking into the data and source of bitcore-node ( http://bitcore.io/ ), I'm a bit confused how all the information is stored in the database, probably it's in a similar way to others block ...
0
votes
1answer
17 views

blockchan.info payment processing, how long?

I try to implement the payment processing API from blockchain.info I created a request by the example of their website, and receive a generated bitcoin adress: See an example here: ...
0
votes
0answers
34 views

Ransomware help

Long story short, my co. was a victim of ransomware, so we bought the bitcoins and I sent it to the address I was given. Once I filled in the require info, transaction id, the browser refreshed the ...
1
vote
1answer
30 views

bitcoin dust spamming - could the blockchain be rendered useless?

My concern isn't with individual bitcoin users but governments, what if a government spammed the network with say $1 Billion dollars worth of tiny dust transactions, including fees? The backlog of ...
-2
votes
1answer
20 views

Can bloom filter be used to filter UTXO?

I am thinking about building an spv-like wallet using trusted nodes. It does not download blockchain. Instead, the wallet gets its utxo, transactions,balance data from abe. My question is, can the ...
2
votes
0answers
30 views

Which language has better Bitcoin API experience, C# or Node.js?

I have a specific usecase, but I won't bother you guys with it, since it is an important general question and will be useful in the future. Right now it seems to me on the .NET side NBitcoin would ...
-1
votes
1answer
59 views

Why my mining has average so low

I bought a YellowJacket to mine bitcoins. I'm using my raspberry pi to test it. My actual configuration is: Raspberry pi using the usb from a laptop. With 1 yellow jacket. Software cgminer 4.9.2 My ...
-1
votes
0answers
17 views

Why there isn't many people who doing bitcoin ARBITRAGE? [duplicate]

When I see bitcoin-analytics.com I find that there's always at least 0.2% difference between bitcoin prices of any two sites. so when I develop a programme that buy and sell bitcoins when there's at ...
-1
votes
0answers
4 views

What is a good way to start research on bitcoins [duplicate]

What to look up and how to get into bitcoins? I have never bought or traded bitcoins but i have heard of them and would like to know more.
1
vote
0answers
20 views

How does the Ripple recovery key work?

I want to understand the process that occurs when a recovery key is used with Ripple. Can anyone explain either the old process (wallet) or the new process (trade)... there was a massive change in ...
1
vote
0answers
29 views

How do I get started with mastercoin? What tutorial or guide is a good start?

How do I get started with Mastercoin? Are there useful tutorials or guides? I am looking at creating a cryptocurrency on Mastercoin so as to leverage on the features of the Bitcoin blockchain and ...
1
vote
1answer
21 views

Antminer U1 running on raspberry pi not accepting shares

I'm new to bitcoin mining and am trying to figure everything out still. My Antminer U1 running on my raspberry pi using cgminer is not accepting any shares, and doesn't appear inside of the mining ...
1
vote
1answer
33 views

Why new public key for every new request?

I created Bitcoin accounts using different clients but all clients I tried prompt for new public key for each request. My question is shouldn't be the public key one's identity which one should be ...
1
vote
1answer
39 views

If price increases over a time period, what is the best explanation(s) if hash rate goes down?

The price of bitcoin is up ~30% over the last three months, but the network hash rate is only up ~5%. How can this be explained? I assume that new, highly efficient mining chips have been produced ...
0
votes
1answer
26 views

bitcoin address to Hash 160 public key : not consistantly reversible?

When I use blockchain.info tools or bitcointoolkit.info tools to convert an address, such as 1MCNpVGDY7BGjJyWZL5FJZiaVkQEiuxy8H to a hash 160 public key : I get ...
1
vote
1answer
29 views

Selfish Mining: stale or orphan?

In terms of a selfish attack many sources speak of orphaned blocks, i.e. blocks that are not on the main chain and thus not paying any coinbase transaction to its miner. Still I'm not sure and ...
0
votes
3answers
42 views

How to monitor the blockchain for new blocks

I want to scan new transactions as they are added to the block chain. Does anyone have a suggestion on how to do this. Are there any APIs that allow for this? Or is there a way to directly tap into ...
1
vote
2answers
16 views

How large is the current utxouts set

There was a website which shows statistics about the size of the set of all unspent transaction outputs. I can't find it any more.
0
votes
1answer
20 views

How probable is a sybil attack?

I'd like to know what's the probability of a sybil attack and if there are mechanisms built in to prevent this kind of attack?
0
votes
0answers
11 views

What factors give Bitcoins “Anonymity” features a bad name? [duplicate]

Can someone pin-point the exact reason Bitcoin, the so called "anonymous" currency is non-anonymous? For example, in order to purchase a bitcoin you have to pay with either a credit card (traceable) ...
0
votes
1answer
29 views

from Bitcoin Core to SPV client

I have a wallet on Bitcoin Core with addresses that are receiving and will receive payments in the future (which I can't change); for this reason I cannot send my bitcoins to a new wallet; that said, ...
0
votes
1answer
16 views

Connecting to a bitcoind in “-regtest daemon” mode remotely from another node (e.g. BitCoinJ)

Anyone knows how to connect to (or even possible) a remote "-regtest" server? I have managed to setup the -regtest daemon, but still trying to figure out how to connect to it using BitCoinJ client. ...
0
votes
1answer
21 views

how is the private/public keypair for spent bitcoins connected to the private/public keypair which corresponds to my address?

Spending bitcoins costs me to sacrifice (i.e. can only be used once) a private/public keypair, am I right? Receiving does not use up a private/public keypair, am I right? Creating a new address also ...
1
vote
2answers
43 views

When can I send 80 byte OP_Returns?

I heard bitcoin-core 0.11 allows 80 byte OP_Returns, but I know miners operate different implementations and was wondering when it would be likely that 80 byte OP_Returns will be swiftly included in ...
0
votes
1answer
19 views

What are the contents of the wallet.dat file? What is Key pool, default key and reserve keys?

There is this https://en.bitcoin.it/wiki/Wallet simple explanation of the contents of a wallet.dat file from bitcoin-core/bitcoin-qt. I have some questions about this: What is the default key? Does ...
1
vote
1answer
42 views

Why is a short blocktime considered to be unsafe?

I've heard a couple of times "a shorter blocktime is unsafe," (first about Litecoin and now Ethereum) but never understood why. Is it the higher probability of a fork? Why do some people consider a ...
1
vote
1answer
26 views

Direct vote and SCP quorum

So there is a fixed 1% annual rate of new stellar creation. These new stellars will be generated on a weekly basis and distributed via a direct voting method. But, there's a distinction between what ...
1
vote
1answer
52 views

Does a private key always generate the same public key and address?

It seems like depending on the method you get different public keys and addresses when using bitcoin-ruby with the same private key. I am probably doing something wrong, but I am not sure where it ...
0
votes
1answer
43 views

Bitcoin Testnet Trouble with bitcoin-ruby

I am having trouble with the bitcoin-ruby gem. I get the following error when trying to send money to another address I have on the test network: ...
0
votes
1answer
45 views

Can old wallet.dat (offline long time) still receive money?

I have an old wallet.dat file (from a backup) and no client installed since a very long time. Recently some transactions have been made (BTC have been sent to my address). Will this old wallet.dat ...
1
vote
1answer
31 views

How can SPV nodes trust received Open Assets?

I was reading over the specification for the Open Assets (colored coins) protocol. It seems that keeping track of Asset ownership requires looking up the scriptPubKey for each input in a transaction, ...
0
votes
1answer
30 views

Blockchain.info transaction unconfirmed for several days

I swept a paperwallet to blockchain.info and the transaction has been unconfirmed for several days...it looks like it was sent in multiple tiny transactions. Has anyone seen anything like this before? ...
1
vote
1answer
33 views

How to return change (utxo - inputs) to output address?

I've been learning to create bitcoin transactions for 3 weeks now, but keep paying the entire unspent_outputs - inputs as fees, even if the transacted amount was like 1/100 th of the outputs. How do I ...
0
votes
0answers
30 views

How to create HD Wallet using bitcoinj

Married/multi-signature wallets and pluggable signers How to create Hd Wallet using bitcoinj I have tried but not understand i got the error in this ...

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