Contribution: Colab version of the Optech Schnorr / Taproot Workshop
Bitcoin Optech created a workshop explaining the Schnorr and Taproot upgrade to engineers. However, users needed to compile a patched version of Bitcoin Core with Taproot support and download and set up the Jupyter notebooks.
Bitcoin Transaction Monitor
Whenever you, an exchange or somebody else sends a Bitcoin transaction, it gets broadcast to all nodes in the Bitcoin network. Each broadcast transaction is represented by a dot on the Bitcoin Transaction Monitor scatterplot. The transactions are arranged by the time of arrival at my Bitcoin node and its feerate (fee per size). The plot reveals activity patterns of wallets, exchanges, and users transacting on the Bitcoin network.
Timeline: Historical events in the development of Bitcoin
To fully understand the rationale behind the current state of Bitcoin development, knowledge about historical events is essential. I created an open-source project containing the data for a timeline of historical developments in Bitcoin. Most data points are adopted from a talk John Newbery gave on the History and Philosophy of Bitcoin Development. I’ve used this timeline in my blog post The Incomplete History of Bitcoin Development.
mempool.observer (2019 version)
The mempool.observer website displays visualizations about my Bitcoin mempool. For example, a visualization of my current mempool and the historical mempool of my node is shown. The idea is to provide information about the current mempool state to a Bitcoin user with a seemingly stuck and longtime-unconfirmed transaction. Additionally, the site can be used for double-checking feerate estimates before sending a transaction.
Konstantin Nick (@sputn1ck) and I build lnplays.com for the Lighting Hackday in June 2018. You could play Pokémon via the Lightning Network build. Pressing the buttons of the GameBoy to move the player and to interact with the world would generate a lightning invoice. Paying that invoice would send the pressed button to the game-backend and the user could see the action over the live stream. The site not longer up, but parts of it can still be seen on archive.org.