Framework
Method
Coin21 is a cycle desk: a rules-based, time-first Bitcoin map. It is a desk, not a black box.
Nested cycles
Bitcoin’s roughly four-year low-to-low rhythm sits inside a longer 18.6-year real estate cycle. The desk models the Bitcoin week count. The slower overlay is context, not a second price target. The clocks is the full explanation.
Time first
Week counts from a significant peak matter more than the last print. Historical peak-to-trough averages ~52–58 weeks. The desk also tracks ~64 weeks for capitulation and ~98 weeks for a full distribution and confirmation process — sometimes measured from an earlier high than the absolute ATH.
Price as confluence
Cycle-low band for this cycle: 43–58k. Fibonacci retracements of the peak and of the prior bull range sit underneath that band. Price confirms time; it does not replace it.
Marks
Three-bar swings, 200-week tests, volume after a grind, Fear & Greed, August seasonality, and whether ETH / XRP / MSTR are down with Bitcoin are flipped only by the tape. Confluence cannot be painted by hand.
Live feeds
Spot and the 24-hour range come from Coinbase. Cycle ATH and the 200-week average come from Kraken daily and weekly candles. Sentiment is the Crypto Fear & Greed index. Time is the machine’s now, so week counts stay exact. Unpin any feed in Anchors to run a scenario.
Alerts
You can watch the tape without an account — on this device, and by email when the desk is closed. The desk pings when a confluence mark flips, when the typical window opens, when price enters 43–58k, when the average trough is four weeks away, or if a new cycle high prints.
How to use the desk
Leave the feeds on. The typical low from this peak is 52–58 weeks (around October 2026). Use the 98-week mark only when counting from an earlier significant high, or if the first low fails. Save that count as a named scenario. The 18.6-year overlay and halvings are context — they do not set the week count.
Not financial advice. Markets evolve. Treat every window as probabilistic.