API & IPN script for our site

Avg Bid (USD)
Project Budget (USD)
$100 - $2000

Project Description:
I need an IPN / API system for my server.

It need to do all basic transaction request and confirmation like paypal does.

We have a website that have points system. and we sell stuff to customer with their points. and customer can aslo buy missing point from us. Other ecommerce site want to let our customer use their points from our website to buy stuff on the other ecommerce website. so I need to set my server like a paypal so it can receice request to transfer point from a customer account into the marchant account, with all the same standard variable that paypal ask.

Every transaction are recorded on our database, and need to do the similar as paypal with creating an unique transaction id, that will be register into the database. as right now user can log on our site and see all transaction they made with their points so it need to be added in the transaction table.

like: IPN Messages Generated by ourserver Payments Standard
with all the standart variable see below in the ipnguide from paypal page 15.

We also need our server to be able to send ipn back to an ipn listener so like paypal we need to have the option so merchant send notify_url.

Iwill send our point system plugin to the awarded bid.

Our system work on Wordpress.

for any question please message me,

Skills required:
eCommerce, MySQL, Paypal API, PHP, Software Architecture
Additional Files: ipnguide.pdf
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