I'm have a number of projects that I'm trying to get underway, and one thing that could speed those up is a java library (no UI necessary) with the following capabilities:Read/Write Btc addresses and associated keypairs from local XML file (keys.xml)
Example file format: <bitcoin>
<pub-key>public key goes here</pub-key>
<priv-key>private key goes here</priv-key>
You can pick whatever format you think is best. As long as you can create valid btc addresses/keys and append to the file, in addition to read addresses/keys from the file, I'll be happy. You'll probably need to use some java crypto library to do this.Read Transactions from a local XML file (transactions.xml)
Assume that the file already contains all relevant bitcoin tx entries for the bitcoin addresses in keys.xml This means that the program does NOT need to read any data from the actual blockchain. The list of transactions for all addresses in keys.xml will be retrieved from a trustworthy source (eg web service) outside the scope of this project.
Example file format: <transactions><tx amount=30.00>..... </tx></transactions>
(please propose a format that will work, i'm not intimately familiar with how they are stored)Create a valid transaction for a specified amount, utilizing above inputs only.
Since the above inputs are the only ones necessary to formulate a valid transaction, there should be a function like "build_transaction(amount, destination_address)" This function will return a properly formed and signed transaction that can passed to a server and broadcast to the network.Small and self-contained
Must be a self-contained jar (including dependencies). The smaller the better. Please note, there is NO direct interaction with bitcoind (local or remote) allowed.I'm willing to pay for this work, and it is urgent. For starters, here's what I propose:
$1000 (or BTC equivalent) if done in 2 weeks.
50% bonus if done in 1 week.
20% bonus if implemented in Scala.
Alternatively, I will also pay $500 (or BTC equivalent) for someone to implement the exact same thing in PHP. I will open source a PHP implementation immediately.Please respond to this thread with questions. Please email me at firstname.lastname@example.org if you're interested and capable. Compensation is negotiable.
Looking forward to working with one (or a few) of you!