Thanks!

Yes, Cross Platform was the major consideration. My app Hardfolio is based on my libraries and supports Windows 10, and Android.

https://www.microsoft.com/en-au/p/hardfolio/9p8xx70n5d2

https://play.google.com/store/apps/details?id=com.Hardfolio

Most of the work I did was around getting USB devices to work in a cross platform way with this library: https://github.com/MelbourneDeveloper/Device.Net

Are you a C# programmer who wants to write an app for the Trezor? Have a look:

https://github.com/MelbourneDeveloper/Trezor.Net

I recently tested and fixed it for Trezor Model T. Please grab it and log any issues etc. on GitHub. The equivalent KeepKey library is based on Trezor.Net and is available here:

https://github.com/MelbourneDeveloper/KeepKey.Net

Also, for good measure:

https://github.com/MelbourneDeveloper/Ledger.Net

If you are a really nice person, you could even write some code and submit a pull request.

Thanks. I'll add those in to the list of APIs. I did use Etherscan at one point, but there were some issues with it for some reason.

Hello to everyone here. I have to apologize for not seeing these responses. I want to thank each and every one of you for these words of encouragement. I see that you have all understood my motivations for creating Hardfolio, and I'm so happy to see that people understand why Store apps are the future for Cryptocurrency.

Just an update on Hardfolio:

Hardolio now supports

Android:

• KeepKey
• Trezor

(Balances added together)

Windows 10:

• Trezor

Next Release both will support KeepKey, and Trezor.

Features Close To Release:

• Ledger Support
• ERC20 Tokens Support
• BCH Split

Hardfolio hasn't been updated for a while because my main focus has been on open sourcing most of Hardfolio, and improving the quality and stability of the underlying engine. I will be ramping up Hardfolio soon so as to realise its original aim which is to add all coins, and all hardwarewallets balances together in one app. You can follow me here on https://twitter.com/HardfolioApp.

Here are the open source libraries that Hardfolio is built on:
https://github.com/MelbourneDeveloper/Ledger.Net
https://github.com/MelbourneDeveloper/Trezor.Net
https://github.com/MelbourneDeveloper/KeepKey.Net
https://github.com/MelbourneDeveloper/CryptoCurrency.Net
https://github.com/MelbourneDeveloper/Hid.Net


Agreed! Unfortunately, Satoshi Labs has been focused on building their wallet inside the browser. That means that there was a lack of smooth native apps. Ledger has moved their app out of the browser and I feel as though Satoshi Labs should do the same thing, but until they do, Hardfolio is an attempt to bridge the gap.


Thankyou! Yes, many people do not understand that Store apps are vetted for malware, and are therefore the safest option for downloading apps. The also help to guard against problems like phishing.


Absolutely. As above.


Yep. Exactly my aim!


I hope the hype will continue.


Exactly.




It is secure as it can be. Unfortunately, this is not made by Satoshi Labs. This is made by me.

Thanks for asking! I was hoping someone would ask that. If you look here, there is a JSON RPC Client. Here there is an Ethplorer Client. The BlockchainClientManager uses any client that is available, times the calls, and automatically adjusts to the fastest server. The JSON RPC clients could call any server that is up and running and implementing the right RPC calls. The BlockchainClientManager has fail over redundancy so if one server is down, the other will be used. As an implementer you shouldn't have to care about whether the server is up or down. I will be adding more and more servers over time so that the library becomes more and more stable. This is crucial because many people shy away from using online APIs because they are not stable enough.

Actually, if you have a list of API Servers available, that would be a really great way to contribute. I'm especially interested in APIs which implement Insight, and JSON RPC.


Yes. My app Hardfolio has 70%+ unit testing code coverage. CryptoCurrency.Net is a small part of that. I brought some unit tests from Hardfolio in to CryptoCurrency.Net. But, the aim is to get coverage up to 100% percent.

https://github.com/MelbourneDeveloper/CryptoCurrency.Net

This library has been developed over a year alongside my other C# hardwarewallet libraries: KeepKey.Net, Ledger.Net, and Trezor.Net. I just released Cryptocurrency.Net today as open source (MIT). It will be useful for anyone trying to query the blockchain or exchanges. It puts a layer over the top of the main cryptocurrencies like Bitcoin, Ethereum, Ripple, Litecoin, and so on. It can communicate with exchanges like Bittrex, Binance, and others. Contribution welcome! Please let me know if you have any issues with the library.

Bitwise XOR is the answer! Thanks HeRetik!

Some code uses the unhardened number, and some code uses the hardened number. In this case, someone else's code gives me the hardened number. I need the unhardened number - I.e. the index as per Slip0044 of the coin.

I can convert from unhardened to hardened, but my question was how to convert the other way around.

When a BIP0044 address path is created, the CoinNumber is hardened like this (C#):

HardeningConstant = 0x80000000;

(CoinType | HardeningConstant) >> 0

Is it possible to take the hardened number and get the original unhardened coin number?

For example, if the coin is Bitcoin, the path is 0x80000000, but the coin number I want is 0. If the coin is Bitcoin cash, the path is 0x80000091, but I want 145 (0x91‬). Is there a bitwise operation I can do to get 145 0x91 from 0x80000091?

Is just subtracting safe? I.e. 0x80000091 - 0x80000000 ?

I've added unit tests for .NET and UWP to my library:

https://github.com/MelbourneDeveloper/Trezor.Net

I'm looking for people test and contribute. Even logging requests or issues would be great.

No need to use sockets. Sockets and the Trezor bridge are only workarounds because JavaScript can't talk to USB devices directly. Because C# doesn't suck you can just talk to the device directly.

Library

https://github.com/MelbourneDeveloper/Trezor.Net

My GitHub profile has libraries for KeepKey and Ledger as well. KeepKey has the same protocol as Trezor so you more or less get that for free if you crack Trezor.

I can help with Ledger and Trezor integration. Are you looking for C# libraries? Please PM me if so.

Oh. probably a good idea to grab version 1.2.1 because I've been fixing thread safety issues today.

Also, it would be a good idea to join this community:
https://gitter.im/trezor/community

Very helpful

That's awesome! Glad to hear you came across it. You'll probably be interested in my app Hardfolio. It's based on Trezor.Net, and will soon support Ledger.

Hi. I built this Trezor C# library:

https://github.com/MelbourneDeveloper/Trezor.Net

It's fully open source (MIT License). It's being used in two production versions of the same app Hardfolio which is in the Google Play Store and the Windows 10 Store. I'm happy to support the library so if you have any issues, please log in them in the issues section on GitHub. There's currently only a sample for .NET Core, but I am using it's out in the wild on Android and UWP.

You can get it from NuGet. It's Trezor.Net

Want to see all your Trezor coin balances summed in one place?

Look no further:
https://www.microsoft.com/en-au/p/hardfolio/9p8xx70n5d2j

See https://christianfindlay.wordpress.com/2018/04/22/hardfolio-alpha-testing/ for privacy and security.

Thanks, but I mean an API. It's a programming thing. It's about accessing the block explorer via code.

I'm looking for a reliable Bitcoin Cash API. I'm currently using https://bitcoincash.blockexplorer.com, and this works well. I have also used https://bch.blockdozer.com, but this recently had an issue. I am now waiting for this to be fixed. Meantime, I need a backup API for any downtime at blockexplorer.com.

I would like to. But, not all the business decisions have been made yet, and I will keep the IP under wraps until the future direction of the software is decided.


Probably not, but all cards are on the table.


This is well understood. The feedback I've gotten is that most people are very worried about using any crypto related app in fear of security and privacy issues. I've put a full FAQ on this blog post to explain security and privacy issues. In a nutshell, there's nothing my app could do to steal any of your crypto, and it doesn't do anything that would compromise your privacy.

https://christianfindlay.wordpress.com/2018/04/22/hardfolio-alpha-testing/

Plug in your Trezor, get all your balances in one place.

https://christianfindlay.wordpress.com/2018/04/22/hardfolio-alpha-testing/

Screenshot:
https://www.dropbox.com/s/2xy3a5scfwhv21p/Two.png?dl=0

I've just deployed my first version of my app called Hardfolio to the store. It's currently in Alpha mode. If you send me your Google account email address, I'll send you an invite to the app.

This app adds functionality that's been missing from hardware wallets. It gathers balances for all the coins you are holding on your Trezor, and totals the estimated fiat value across the coins. The app is currently totally free, and if you do some alpha testing now, I will guarantee that you are never charged for the app. Also, I will make sure that any feedback you give about the app is given priority.

I'm still putting privacy details etc. together but this app does not collect any of your data other than coin addresses which are used to get your balances. It does not share your private or public key with anyone. Feel free to ask questions if you're not sure about the app. Otherwise, PM me your email address.

iOS and Windows 10 versions on their way...