0
votes
0answers
17 views

Transaction with 12+ confirmations at blockchain.info, but still no coins have arrived

So i'm using Blockchain.info as a wallet, i received some bitcoins to my wallet and inmediately after that i re-sent them to an exchange. Incoming to my wallet: ...
1
vote
1answer
27 views

How does bitcoin prevent this network splitting attack?

How are malicious nodes prevented from, after getting the nonce of a new block found by someone else, broadcast it to the other nodes claiming it to be its? Also, how does the bitcoin system solve ...
0
votes
1answer
16 views

Extract genesis block raw TX data

RPC does not return the raw transaction for the genesis block. I need to get this data for other coins to be able to add them to ABE. ...
1
vote
2answers
29 views

Receving donation on a bitcoin address and security issues of reusing the same address

I am running a blog and would like to receive donation from my followers. So I should add a bitcoin address on my Support me page! But on bitcoin.it, it is recommended to never reuse addresses (not ...
0
votes
1answer
12 views

Redeeming OP_SHA256 hash OP_EQUAL (Testnet) Tx

I created the following non-standard Tx on the Testnet3 network: 6b52c981e6814072db77cb755b2633cd126b4ca21501d18ab994531e17a4a813 { hash: ...
0
votes
0answers
14 views

How to generate a private key to create wallet through api in Block chain

I need to pass private key while creating a wallet in blockchain.info through api call which is defined here https://blockchain.info/api/create_wallet I'm using php for creating wallets. Please ...
0
votes
1answer
34 views

Why did my transaction not include the fee?

I've been using Bitcoin for a long time now. I've used all kinds of different wallets and API's. But, last night I moved 0.30 BTC from an android wallet which is a fantastic wallet, I think the best ...
0
votes
1answer
24 views

Is there any open source implementation of Bitcoin wallet encryption in Java?

I intend to establish an efficient and secure scheme for protection of wallets. For this , I need source code that implements wallet ecryption as mentioned in ...
1
vote
0answers
30 views

Correlation between Ripple and Bitcoin

Is there a correlation between the value of Ripple (XRP) and Bitcoin (BTC)?
1
vote
0answers
21 views

Error initializing block database. Do you want to rebuild the block database now?

I'm trying to set up a test network consisting of 3 nodes, each with different bitcoin.conf. I've constructed the directory and the .conf-files similar to what is the state of the art in ...
2
votes
0answers
17 views

getblocktemplate times out after being called many times

I am writing a program about bitcoin mining. It calls the RPC method getblocktemplate every second. Sometimes bitcoind doesn't reply to my RPC getblocktemplate request, but bitcoind still accepted new ...
0
votes
1answer
69 views

Where should I keep my Bitcoins so the government cannot track their use?

If I am selling highly illegal items, where should I keep all my Bitcoins so the government doesn't have access to it. I can't use cash unfortunately since my clients are not in my area. I cannot ...
1
vote
1answer
16 views

Using Armory Watch-Only wallet in Electrum?

Is it possible to import a Watch-Only wallet that was made in Armory into Electrum? I like to use Armory for cold storage but like Electrum more for hot wallets because it's lightweight and you never ...
3
votes
0answers
18 views

Provable Solvency Implementations

Is there a list of provable solvency implementations? It appears to be that each company is taking their own unique swing at the problem. This strikes me as an area that could benefit from ...
1
vote
1answer
73 views

What is the estimated size of complete blockchain when all bitcoins are mined. i.e around 2140?

By size, I mean how many GBs or TBs of data storage I would need to save entire blockchain starting from Genesis block when all bitcoins are mined?
0
votes
0answers
8 views

Do I need to keep updating Armory version and more?

Do I need to keep updating version of Armory when it notifies me of new version. Just wondering if these are security patches or just some new bells and whistles in new armory versions. Seems like it ...
0
votes
1answer
12 views

Bitcoin accepted charities or organizations

I'm looking for Bitcoin accepted Charities. I want to make a list of the charities. I found that Donation-accepting organizations and projects but I prefer organizations which are saving children, ...
0
votes
1answer
38 views

How to store blockchain data

If I wanted to imprint the blockchain data on a database, with the purpose of performing complex or just different than the RPC-based queries, how would I do it? Would I have to go for a relational ...
3
votes
2answers
83 views

Are people incentivized with BTC to run nodes?

Bitnodes shows everyone running nodes. Are these people incentivized to run nodes? If not, why not? If so, do node operators make some BTC from transaction fees, etc.?
3
votes
1answer
28 views

Android BTC clients that remotely use my Bitcoin Core wallet?

Are there any Android BTC clients that remotely use my Bitcoin Core wallet so I don't have to use another wallet specific for my phone? I am running my own BTC node.
3
votes
1answer
44 views

blockchain.info and blockexplorer.com show different balance for the same address

Does blockexplorer.com have a bug or some other reason? https://blockexplorer.com/q/getreceivedbyaddress/1KWd23GZ4BmTMo9zcsUZXpWP4M8hmxZwRU 1.95331249 ...
0
votes
0answers
16 views

How much is known about mining pools' transaction fee policies?

We know that as of today in Bitcoin Core v0.10.0, the default value of minrelaytxfee is 1000 satoshis, and CreateNewBlock in miner.cpp uses this value as the minimum fee rate threshold in order for a ...
0
votes
1answer
21 views

Why can I only see the balance of my wallet and not the one of each of my receiving addresses? (Multibit)

I have some troubles to understand the logic behing addresses and wallets. I use Multibit to manage my BTC. I have one wallet with 5 receiving addresses. I have transfered from an exchange website ...
2
votes
2answers
66 views

What mining performance can we roughly expect from the Intel SHA extensions of the upcoming Skylake processor architecture?

Intel is scheduled to release their new x86 SkyLake microarchitecture in Q3 2015. Among other interesting features, it will introduce SHA extensions that will allow hardware acceleration of the Secure ...
0
votes
0answers
9 views

Testnet version history

From Bitcoin Wiki: Testnet There have been three generations of testnet. Testnet2 was just the first testnet reset with a different genesis block, because people were starting to trade testnet ...
1
vote
1answer
21 views

watch-only addresses doesn't work properly in bitcoind v0.10.0

I imported a watch-only address to bitcoind by using below command: bitcoin-cli importaddress <myaddress> "testacc" true According to release notes it should support some rpc calls for this ...
0
votes
1answer
33 views

BIP32 child derivation from another child

I have a bit of conceptual problem here, Let's say I have a BIP32 implementation. If I derive two subkeys (1/2/1/2) and (1/2). is it possible to derive (1/2/1/2) from (1/2) with a subkey of (1/2)? I ...
1
vote
0answers
24 views

How do I get hash to verify transaction?

If I have the public key and signature for a transaction how do I get the hash value that is used in verify(hash, sig, pubkey). I want to know how to work backwards from a raw transaction to get it, ...
0
votes
1answer
29 views

Coinbase denies transaction: Please complete verifications to send money

I use coinbase to transfer BTC for few monthes. Everything used to be ok up to today. I suddenly got message "Please complete verifications to send money". I did not ever get this message before. ...
0
votes
0answers
19 views

Signing data with a namecoin private key?

Consider the following scenario User A stores an image on a DHT and receives a SHA-256 hash in return. User A wants to prove ownership of the data has, so he registers a username on the namecoin ...
0
votes
0answers
7 views

Is there any exchange that accept paypal [duplicate]

is there any straight-forward or however indirect means to exchange paypal? because there are almost no means available online. all the means that were referred are outdated. can anyone kindly share ...
0
votes
2answers
52 views

bitcoin script for a competitive crowdfunding-like contract

I'm curious about how one might replicate the functionality of http://whatbitcointhinks.com/ using bitcoin script. The functionality is that there's a sort of crowdfunding competition between two ...
-1
votes
0answers
16 views

Blocks were behind [closed]

I had not ran bitcoin for a long time, started it up yesterday and it was going thru the process being behind, took about 8 hours to catch up but I still do not show any transactions. The last time I ...
0
votes
0answers
32 views

How I can verify a Transaction in my new alt coin?

I have created a new coin and all the coins are premined. But when I transfer some coin to other wallet, it shows as "Pending Balance" with 0/unconfirmed. I want to verify my transaction. How can I do ...
1
vote
1answer
36 views

What is meant by “relaxed standards” for P2SH redeem scripts in Bitcoin Core 0.10.0?

From the Bitcoin Core 0.10.0 release notes: Standard script rules relaxed for P2SH addresses The IsStandard() rules have been almost completely removed for P2SH redemption scripts, allowing ...
1
vote
0answers
18 views

Blockchain (lack of backwards) compatibility in Bitcoincore 0.10.x

From Bitcoincore release notes: Because release 0.10.0 makes use of headers-first synchronization and parallel block download (see further), the block files and databases are not ...
0
votes
2answers
21 views

Bitcoin exchange plateforms and foreign exchange regulations

i'm wondering how cryptocurrency exchange platform adapt to country regulations where foreign exchange is forbidden (especially where sending money outside is forbidden). How they could buy bitcoin ...
3
votes
1answer
30 views

Generating private keys in Java

I'm looking for a way to generate private keys in Java. I'd like to make this a standalone program, so I'd rather not use a library like bitcoinj. From my research I've only seen people recommend ...
1
vote
1answer
19 views

What is Namecoin's blocksize limit?

Bitcoin's is 1MB at the time of writing this. Seems like Namecoin would have to be bigger due to it proving 512 bytes of storage with a name update, but it also has slower average block times(about 20 ...
0
votes
2answers
36 views

Sending from address to address in bitcoind

I'm programming the back-end for an ecommerce solution, Bitcoind API gives me one way of sending money to a bitcoin address: sendfrom <fromaccount> <tobitcoinaddress> <amount> If I ...
0
votes
2answers
28 views

BItcoind/P2Pool What am I doing wrong?

I am running latest bitcoind and p2pool releases (default port settings) on Fedora 21 with ports open for 3332-3333, 8332-8333, and 9332-9333. Everything appears to be well when connecting to the BC ...
0
votes
0answers
16 views

Blockchain.info RPC API and deposit/withdraw problem

I'm using blockchain.info RPC to detect deposits using Node.JS as server, using listTransactions method. Because blockchain.info doesn't has walletnotify api. When processing deposits, there is no ...
0
votes
0answers
12 views

How or where to send a picture postcard via web/internet and pay with Bitcoin?

I’m searching for a service where I can send picture postcards via the web paying with Bitcoin. I have searched with google but did not find any service, where I can pay with Bitcoin (only credit ...
0
votes
1answer
27 views

In Peercoin style Proof of Stake, can one person 'stake' for another's address?

The parameters included in the staking are listed here: // ppcoin kernel protocol // coinstake must meet hash target according to the protocol: // kernel (input 0) must meet the formula // ...
2
votes
3answers
127 views

How do I make a profit buying cloud-hashing contracts?

I have tried one of the hashpower selling/buying website (nicehash) to buy hashpower. I have connected my order to a pool where I had one worker. However, despite all the advertisements, I could not ...
0
votes
0answers
46 views

What is “Signing transaction failed” error means ? How to resolve and avoid it?

I just tried to send some bitcoins and I received this error , I don't understand what does it mean and why?
2
votes
1answer
34 views

Clarification of Tx Fees settings in Bitcoincore 0.10

I'm looking for clarification of the new Tx priority and Tx Fees settings (eg fee per kB in the 0.10 version of Bitcoincore. Is the 0.0001 BTC fee deprecated? Why the move towards variable Tx fees?
-1
votes
0answers
31 views

First time bitcoins, deep web [closed]

I want to buy bitcoins to use for various transactions, but I never bought bitcoins before, I dont even have a wallet (yet) I know there is Bitcoin ATM machines where I live,. Is the safest way to buy ...
2
votes
1answer
80 views

Why doesn't the same miner always win?

If the miner with the strongest ability to solve the block wins, why doesn't the same miner win every time? Wouldn't that miner still have the strongest ability to perform the proof of work on the ...
1
vote
1answer
23 views

Alternative to run Bitcoin over Tor

I know running Bitcoin over Tor isn't a good idea: Bitcoin over Tor isn’t a good idea. My question is: there are any alternative to hide the IP to the network safely? Using a proxy, if you don't full ...

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