Taproot is a new softfork on bitcoin network that will enhance privace and scalability, as well power new novels of aplications on top of it

We will subscribe to bitcoind ZMQ notification system, witch send a notification every time something happens. In our case, every time a new block is found. Check wether the block was mined inside the defined window and if is signaling (has a very specific bit set on the header).

All the useful information will be exposed under a simple REST API, the returned data is a JSON as follow:

    started - Does the window started?
    ended - Does the window ended?
    window - Return a JSON with the begin and end of the window in UNIX timestamp
    count - The number of blocks with the bit set
    windowTotal - How many blocks has been mined since the window started
    leftToBeAssigned - How many blocks left into the window
    leftToActivate - How many blocks left to reach the threshold

The program needs a Bitcoin Core (or any full node) synchronized with the network - prune is fine - with the ZMQ's pushblockhash option enabled. Also you need a instance of nodejs and npm installed, see here.
After setting up the core, you need clone the repository with:

    git clone https://github.com/Davidson-Souza/taproot-monitor.git
    cd taproot-monitor

Then install the required packages with npm

    npm install --save

Finaly, just run

    npm start

If your bitcoind has different settings, like port or password follow the steps bellow:

    cp .env_sample .env
    nano .env

Edit the .env file uncommenting what you need set by removing the #, as well inserting the proper informations. After that you can run with the npm start as above.