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MultiBit won't open, says “Java not installed”

My MultiBit wallet won't open, because "Java is not installed", though I have Java 8, 7u51, and 6u49 installed... Which version of Java should I have installed?
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0answers
40 views

How to use Bitcoinj to authenticate signed messages?

I'd like to authenticate from java code on a website that makes use of javascript/ajax authentication like below: var key = new Bitcoin.ECKey(Crypto.util.hexToBytes(SHA256(password))); var ...
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0answers
31 views

Bincoinj without PeerNetwork

I am writing a system which generates wallets on a per user basis. It must be capable to receive and send payments. So I have to keep the private keys encrypted on the system. Generating the ...
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1answer
142 views

Generating an address from a private key in Java?

I'd like to write a function in Java that takes a private key and generates the address to use in a QR code. I'd like to make this , but I'm not very good with the hashing algorithms. I've checked ...
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1answer
182 views

Check Bitcoin address balance from blockchain

I am a merchant that accepts bitcoins, and I'm building my own desktop client for receiving them in Java. When I receive a transaction, I would like to be able to see in my client how much bitcoin is ...
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0answers
131 views

(JAVA) Get address balance from the blockchain

I'm a merchant that is currently developing client that I will use for receiving transactions for my business. I would like my client to be able to check how much Bitcoin the address sending to me ...
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0answers
63 views

Verifying mrkl_root from two children nodes in JAVA

Let's use the following block for a reference: http://blockexplorer.com/rawblock/00000000000000001e8d6829a8a21adc5d38d0a473b144b6765798e61f98bd1d According to my understanding (correct if wrong), I ...
3
votes
1answer
269 views

Creating Base58 public key & private key in Java?

How can I create a base58 private key and public key in Java? I'm pretty familiar with Java and I have the bitcoinj-minimal code, but it's not clear to me how I can generate a base58 key pair from the ...
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1answer
51 views

BOP: Not authorized to receive from the temporary destination

I'm trying to run my own BOP (BitsOfProof) server and connect to it. I appear to be able to connect, but I am unable to execute any commands. I am connecting with the following: ...
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1answer
269 views

Does the MultiBit linux jar file run in windows?

A windows system has a standalone java and is not recognized by the installer. A jar file can be run on the command line. Is the MultiBit linux jar and the windows installed one the same?
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1answer
76 views

How safe is it for me to install Java on OS X 10.8 to use Bitcoin [closed]

I want to use the Bitcoin client Multibit, but to do so I will need to install Java which over the past six months I've only heard bad things about. So my question is: how safe is it for me to ...
5
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1answer
449 views

How to run Bitcoinj on Heroku?

Does anyone know where I might find a tutorial on how to deploy a bitcoinj server (essentially a replica of a bitcoind server with an rpc API) on Heroku?
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0answers
221 views

Test Network Genesis Block

I am using BitCoinJ for my java application which fetches the test network's genesis block. I referred to the basics mentioned at JavaWorld and BitCoins Google Code wiki. I am able to get it running ...
3
votes
1answer
101 views

BitCoinJ for Cloud based application

I am currently working on a cloud based project that will be accepting payments using bitcoins. I intend to use BitCoinJ to handle the payment. Unfortunately the only help I am able to get is from the ...
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votes
3answers
893 views

How do I create an offline transaction in java to broadcast via blockchain.info?

Blockchain.info has a PushTX API. How do I create & sign a raw transaction in Java for use in this API? Should I use bitcoinj? Are there any code samples?
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votes
4answers
687 views

How to communicate between Java and bitcoind?

I am having problems communicating between Java and bitcoind - every JSON RPC library I try has some issues. Can anyone provide a working implementation of even the most basic JSON RPC communication ...
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1answer
368 views

Bitcoind returning “Invalid JSON-RPC 2.0 response”?

I am starting to use a basic implementation of Bitcoin JSON RPC (dzhuvinov library), and I am getting a strange result. Here is my code: public static void main(String[] args) { URL serverURL = ...
4
votes
3answers
841 views

Can I send message inside the transactions script?

I would like to send transactions with messages as described in the wiki. In Transaction with slightly changed script is never relayed, someone answered that non-standard transactions are not relaid ...
4
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1answer
180 views

Load a transaction with bitcoinj

I am developing simple Bitcoin application using the bitcoinj library: The user enters the hash of a transaction and my application should return detailed information about that transaction. How can ...
5
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1answer
462 views

How do I generate offline transactions in Java?

I'd like to develop a Java binding to the Stratum Overlay Network (a server for thin clients). This requires signing on offline transactions. Can I directly use bitcoinj's API to do this? Can I ...