We have an app. It's a cross between a coin collection tracking app, and a bitcoin app that scans the blockchain for wallet addresses and values. It's called "Cold Storage Coins" and is available now on the iTunes app store:
We are happy with version 1.0, but need to quickly launch v1.1. There are two CRITICAL missing features:
1) adding support for other cryptocurrencies, including BCH, DASH, LTC, ETH & CLUB:
Right now, the app does exactly what we want it to do. But it only supports our BITCOIN product. We also manufacture several other coins, using different blockchains.
The main feature of our app is the QR code scan. We need to upgrade the app so that the coin CURRENCY is detected from the scan. Litecoin, Dash, Ethereum and Clubcoin are all unique, so it will be easy to identify these. Bitcoin & Bitcoin Cash use similar formats, so we may want to either ask the user to confirm which coin they have scanned, or better yet, check our database of manufacturing records to confirm exactly what type of currency is on the coin.
So the preferred method is:
SCAN QR -> DETECT -> LOOKUP IN OUR DB & CONFIRM -> ADD
Another benefit of this flow is that we can confirm that the coin is authentic, which is very important.
2) Use better Blockchain API that updates more quickly:
At the moment, the app is very slow. We need to use blockchain.info's API for near-instant confirmation of the public Bitcoin key value. As we add these new blockchains, we'll need to use the fastest blockchain API we can find for each.
Please respond with examples of similar type of work in your portfolio - API calls or specifically, bitcoin API calls. Please let me know if you have any questions.
I am looking for a mix of experience and value