Ciao Humberto! building a new library is a great way to learn about bitcoin, you should also take a look at the Bitcoin Dev Kit project (https://github.com/bitcoindevkit) where we're building support for Kotlin/Java (and Android) and eventually Swift and iOS. You don't need to know Rust (though it's a great language to learn! ) and we'd love to have new folks join us as we develop the language bindings which is also a great way to learn the primitives for on-chain Bitcoin. 

Steve

On Mon, Oct 4, 2021, at 5:23 PM, Humberto Marcolino via bitcoin-dev wrote:
> Hello,
> 
> My name is Humberto, owner of the repository https://github.com/bitcoin-education/bitcoin-java.
> 
> I'm posting to divulge a new open-source Bitcoin library written in Java, with support for taproot single key transactions: https://github.com/bitcoin-education/bitcoin-java.
> 
> My main motivation to build this library was for educational purposes. Also, I was missing a lean bitcoin library written in Java, since I think bitcoinj too feature-heavy. I don't intend to include features that allow communication with nodes nor any online features in it. I think it is ideal for developers that want to build a wallet in Java.
> 
> Feedback, PRs, and issues are welcome and appreciated.
> 
> Website of the project, where I plan to post more examples using it: https://www.bitcoineducation.site/
> 
> Best regards,
> 
> Humberto
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