PlanB is back. The anonymous statistician who convinced a generation that Bitcoin's price is a straight line function of scarcity just dropped his latest forecast: $500,000 to $1,000,000 before this halving cycle ends. Pump, dump, debug. Repeat.
I've been watching this model since 2019. I've seen it predict $100k by December 2021 and deliver $46k. I've seen it survive every miss by simply redrawing the curve. The S2F model is like a lines-of-code metric for a smart contract—it tells you size, not security. And right now, the crypto market is treating this prediction like an audited result. It's not.
Context
Stock-to-Flow (S2F) divides Bitcoin's existing stock by its annual flow (newly mined coins). The idea: as the flow halves every four years, the ratio doubles, and price should follow. PlanB's original model claimed a near-perfect correlation between S2F and price on a log chart. It went viral during the 2020-2021 bull run. Then the 2022 bear market hit, and Bitcoin diverged from the model by more than 70%. The model was supposed to predict $100k in 2021. It didn't. It was supposed to predict $55k by 2024. It spent most of the year below $30k.
Now, with the fourth halving in the rearview (April 2024, block 840,000), PlanB is doubling down. His new target range implies a Bitcoin market cap between $10 trillion and $19 trillion—roughly 5-10x from today's $1.8 trillion. To get there, you need more than a supply shock. You need demand that dwarfs everything we've seen.
Core: Why the Model Fails Under Code-First Scrutiny
Let's treat PlanB's model like we treat a smart contract. What are the assumptions? What can break?
First, the model is linear in log-log space. It assumes that a doubling of scarcity (S2F) produces a predictable price increase. But price is a function of supply and demand. The S2F model treats demand as constant or irrelevant. That's like writing a DeFi contract that assumes the price oracle never goes down. It works until it doesn't.
Second, the model has no error bars. When PlanB publishes a single number—$500k—he's ignoring the fact that historical data around the regression is wide. In 2021, the model's 95% confidence interval spanned from $10k to $200k. He picked the top. Typical.
Third, the model ignores on-chain reality. Look at Spent Output Profit Ratio (SOPR). Look at the MVRV Z-score. Both are currently in neutral territory, far from the extreme readings that preceded previous blow-off tops. If the S2F model were correct, these metrics would be screaming overheated. They aren't. t check.
I pulled the on-chain data myself last night. The Long-Term Holder (LTH) supply is still at record highs—meaning those who bought early aren't selling yet. That's bullish, but it doesn't confirm a $500k target. It confirms patience. The short-term holder cost basis is around $58k. If we drop below that, the entire model's premise (that scarcity creates an ever-rising floor) collapses.
Fourth, the model ignores macro. Bitcoin is not a sealed system. When the Fed raises rates, risk assets fall—scarcity be damned. The S2F model looked brilliant during QE (2020-2021) and terrible during QT (2022-2023). Correlation, not causation.
Based on my experience auditing tokenomics for over 40 protocols, I can tell you: a model that doesn't include the demand side is not a model. It's a narrative dressed in charts.
Contrarian: The Unreported Angle—PlanB's Model Has Already Priced In
Here's what no one is saying: the market has already discounted the S2F narrative. The halving happened. The supply reduction is known. The remaining 639 days until the next halving are already baked into the futures curve. If PlanB's model were correct, Bitcoin should have rallied to $100k by now. It didn't.
Instead, we're range-bound between $60k and $70k. The "scarcity shock" that PlanB predicted is visible in on-chain metrics like the declining miner reserves—but price isn't responding. Why? Because the real scarcity is in liquidity, not coins. The market is waiting for rate cuts, not a block reward reduction.
Let me be cynical: PlanB's prediction is a self-fulfilling prophecy for those who want to believe. It gives retail a reason to hold. And holding is fine—but don't confuse price projection with financial analysis. The S2F model is not a trading strategy. It's a belief system dressed as math.
Gas fees higher than the yield. Typical.
Takeaway
Stop looking at PlanB's chart. Start looking at the US dollar index, the Fed's balance sheet, and the on-chain holder behavior. The next $100k move won't come from a model that worked once and failed twice. It will come from real adoption—ETF inflows, corporate treasuries, or a global currency crisis. Until then, remain skeptical. The code—or in this case, the model—has not passed the test of time. It passed the test of hype. And we all know how that story ends.
Pump, dump, debug. Repeat.
