Tutorial shows how to follow a live blockchain in Python using asyncio

A new asyncio tutorial replaces simulated data with a live feed from Janzeer, a small Layer-1 blockchain. The example uses the janzeer-sdk package with its WebSocket extra and fits in about twenty lines of code. It subscribes to new blocks, routes them through an asyncio queue, and prints each block's height, hash, transaction count, and average gap between blocks. The author highlights three patterns to reuse: queues as callback sinks, timeouts on waits, and clean shutdown with async with and try/finally. A second example filters activity for a validator's wallet, showing a block reward reported as final on first notification, and a third combines HTTP and WebSocket clients with asyncio.gather.