Finematics

Finematics is a one-person channel run by Polish developer Hubert "Hub" Mosionek, producing meticulously animated explainers of DeFi and Ethereum-adjacent mechanisms. The catalogue includes some of the clearest visual explanations of AMMs, flash loans, MEV, options vaults, liquid staking, EigenLayer, and the various restaking and rollup designs that have defined the post-2020 Ethereum stack. Output is slow but the quality per video is unusually high.

Who it's for

Intermediate-to-advanced viewers who know what Ethereum and a wallet are and want to actually understand how specific protocols work under the hood, not just what they do. Developers will appreciate the precision; product people and analysts will get the mental models they need to talk to engineers. Pure beginners may find the assumed vocabulary a barrier.

What it does well

The animations are the channel's signature, and they are not decorative — they're load-bearing. Watching the AMM explainer literally helps you see how the constant-product invariant moves price along a curve in a way that no amount of prose can. The flash loan, MEV, and liquid-staking videos are similarly diagrammatic in a way that makes complex sequencing legible. Finematics has effectively become the canonical reference some teams point new hires at for "here's how this works."

Hub is also rigorous. The videos cite specific contracts, walk through real transaction examples, and are usually accurate to the protocol's design rather than its marketing. He'll happily flag when something is fragile, novel, or genuinely risky.

Where it falls short

The output cadence is slow — sometimes only one or two videos a month — which means the channel is not a way to keep up with a moving ecosystem. By the time a polished Finematics video lands on a topic, the discourse has often moved on. Treat it as evergreen reference material, not as news.

The Ethereum-DeFi focus is also narrow. There's essentially no Bitcoin, no Solana, no Cosmos, no L1 comparison material. If your interests run beyond Ethereum's neighbourhood you'll need other sources. And the videos are concise enough that you sometimes finish one wanting more depth than the format allows; Hub's blog and Twitter are useful supplements when this happens.