Supply Curve Visualizer Screensaver
The Supply Curve Visualizer screensaver ticks a precise, live readout of Bitcoin's real circulating supply climbing toward its real 21 million hard cap, computed exactly from the current live block height via mempool.space. It's free, runs in your browser, and ESC exits.
How the Supply Curve Visualizer screensaver works
The saver fetches Bitcoin's real current block height from mempool.space, with no key required.
Circulating supply is computed exactly from that height using Bitcoin's real, fixed halving schedule.
Between real blocks, the readout interpolates smoothly at the real average ten-minute pace.
A progress bar shows how close real supply is to the fixed 21 million cap.
A worked example
You'll see the real supply figure tick upward continuously — a genuine, exact computation from Bitcoin's known issuance rules, not an approximation.
Settings & tips
- Accent recolours the progress bar.
- The 21 million cap is a real, fixed protocol rule that cannot be changed by a single actor.
- Supply growth slows by half at every real halving, roughly every four years.
Frequently asked questions
- Is this exact?
- Yes — circulating supply is deterministic given the real current block height, computed precisely from Bitcoin's known issuance schedule.
- Is a key needed?
- No. mempool.space's public API is free and key-less.
- When does supply reach 21 million?
- Around the year 2140, per Bitcoin's real fixed halving schedule — this saver shows real progress toward that point.
- Is it free?
- Yes — free, no download, in your browser.