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The Bitcoin Power Law, in Plain English: What Holds, What Doesn't

There's a way to draw Bitcoin's price that turns fifteen years of booms, crashes and mania into something almost boring: a nearly straight line.

Backtesting Arena·June 12, 2026·5 min read·1 views
The Bitcoin Power Law, in Plain English: What Holds, What Doesn't

A new paper by Giovanni Santostasi and Stephen Perrenod argues that line isn't a coincidence or a chart trick — it's a law, as predictable as the physics that governs how rumours spread or how networks gain value. The claim is bold, the work is serious, and parts of it genuinely deserve attention. Other parts quietly claim more than the data can carry. Here's the whole picture, in plain language.

The trick is the graph paper

Plot Bitcoin's price the normal way and you get a hockey stick: flat for years, then a vertical wall. Useless to read.

Now change the paper. Stretch both axes so that each step means "ten times more" instead of "one more" — what scientists call a log-log plot. On that paper, the wall flattens and the chaos snaps into a line. The paper's headline is that this line has a fixed steepness: price grows as time raised to the power of about 5.7 (written P ∝ t^5.69), measured across 5,696 daily data points since 2010, with the fit explaining 96% of the variation.

Think of a coastline. From the beach it looks ragged and random. From a plane it reveals a consistent shape that repeats at every zoom level. The authors say Bitcoin's price has that kind of built-in regularity.

Where the line comes from: two everyday stories

The clever part is that they don't just fit the line — they try to derive its steepness from two simpler stories.

Story one: the wildfire. Bitcoin spreads like a fire through an unevenly packed forest. It catches first in the dry, densely clustered tinder — the early, hyper-connected enthusiasts who all talk to each other. That core burns fast, then saturates, and the fire has to push outward into sparser, damper, harder-to-reach wood: the casual, less-connected latecomers. That outward-rippling "saturation wave" is exactly the pattern mathematicians found when they studied how epidemics spread through human contact networks. It produces growth that's fast but steadily decelerating — in the paper's measurement, the number of active Bitcoin wallets grows as time cubed (t^3).

Story two: the telephone. One telephone is worthless. Two make a single connection. A whole town of telephones is wildly valuable — not because of the phones, but because of all the connections between them. This is Metcalfe's Law: a network's value grows faster than its user count. The paper measures Bitcoin's version at user-count to the power 1.84 — superlinear, but a notch below the textbook "squared," because each newcomer adds a little less than the pioneer did (the ten-thousandth guest at the party matters less than the first ten).

Multiply the two stories together — a network growing as t^3, valued at users^1.84 — and you get t^(3 × 1.84) ≈ t^5.6. Almost exactly the 5.69 measured directly. That convergence is the paper's centrepiece.

What genuinely impresses

Two things deserve real credit.

First, the scale-invariance tests. The authors run the same analysis on the NASDAQ, the S&P 500 and gold. Those assets show a "preferred timescale" — short-term momentum, long-term mean-reversion — so their curves bend. Bitcoin's, uniquely, stays straight at every zoom level across its whole history. Whatever you think of the theory, that's a striking, clean empirical fact.

Second — and rarer — they tell you what would prove them wrong. They list five specific tripwires (a price floor that shouldn't durably break, an adoption rate that shouldn't collapse, a fit quality that shouldn't fall apart). Most price prophets never do this; it's the difference between science and astrology. Give them their due.

Now the honest part

Three things the headline version tends to skip.

The three witnesses are really two. The paper presents the match between "wildfire × telephone = 5.6" and "measured 5.69" as independent confirmation. It isn't, quite. If price equals users^1.84 and users equal time^3, then price equalling time^5.6 is just multiplication — the same fact wearing a different hat. It's like measuring a room's length and width, then presenting the area as a third, separate discovery. Real, but not independent.

"Deterministic" is doing too much work. The model's own error band is a factor of two in either direction. Picture the tide. The long, slow rise and fall of the tide line is real and roughly predictable — that's the power law. But the waves crash two metres above and below it, and if your time horizon is anything shorter than a decade, the waves are what soak you. Bitcoin's four-year boom-bust cycle lives entirely inside that ±2x band. The paper calls the tide "deterministic, not speculative." Fair enough — but the waves are exactly the speculation, and they're where almost everyone actually invests.

The bullseye was painted after the arrow landed. The law is fitted to the one asset that survived and rose a millionfold. Thousands of other coins traced similar early curves and went to zero; we don't fit laws to them, because they're gone. Writing an elegant formula for the survivor is a bit like studying the one lottery winner and deducing a law of winning. The fit is in-sample — built from the same history it explains — so it can't, by itself, prove it will keep holding.

Two smaller flags, both of which the authors honestly concede: counting wallet addresses isn't counting people (one exchange can hide millions of users behind a single address, and abandoned addresses linger), and the "wildfire" mechanism is an analogy to epidemics, not a measured map of Bitcoin's actual network. And nothing economic forces wallets to keep multiplying as t^3 forever — every growth curve bends eventually, or you'd forecast a toddler into a four-metre-tall adult.

So is it useful?

Yes — as a long-horizon tide chart and a sanity check, not an oracle and not a price target. As a frame for thinking in decades, the power law is a genuinely interesting lens, and the Metcalfe finding has independent support elsewhere. As a precise forecast for next year, a corridor that wide can justify almost any outcome after the fact.

We're writing this not to dunk on the work — it's careful, and its falsifiability is a model others should copy — but because the gap between "an elegant long-run regularity" and "Bitcoin's price is deterministic physics" is exactly the kind of gap that's easy to sell and expensive to believe. A model earns more trust, not less, when you can name precisely where it stops working.

Study the model. Then study its limits.

This is not investment advice and not a price forecast — it's a plain-language read of one research paper. We're not financial advisors.


Source: Santostasi & Perrenod, "A Mechanistic Derivation of the Bitcoin Price Power Law" (Scientific Bitcoin Institute, 2026), and the Metcalfe-scaling literature it builds on (Peterson 2018; Wheatley et al. 2019). All figures are the authors' own, measured over July 2010 – February 2026.

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