Reserve Risk

*Every day a long-term holder does not sell is a bet. They forgo whatever the market would have paid them, and they do it again tomorrow, and again. Reserve Risk tries to put a number on that stubbornness — to weigh the accumulated conviction* of the coins that stay still against the price on offer to move them. When holders are resolute and the price is cheap, the reward for joining them looks large. When their resolve is spent and the price is euphoric, the reward looks thin, and the risk sits at the top of the cycle.

Reserve Risk, devised by Hans Hauge, is an attempt to express a single question as a ratio: how attractive is it to hold Bitcoin right now, given both the price and the conviction of the people already holding it? It reads as Price divided by HODL Bank. The numerator is easy. The denominator is where all the work — and all the assumptions — live.

The raw material is coin-time. A coin that sits unspent accrues 'coin days' — one bitcoin held for one day is one coin day. When that coin finally moves, those accumulated days are 'destroyed', and the market's family of Value Days Destroyed (VDD) metrics captures how much dormant conviction was just spent, weighted by the value at stake. Reserve Risk turns this around: rather than measuring conviction destroyed, HODL Bank accumulates the conviction that holders choose not to spend — the opportunity cost they forgo by not selling into the current price, summed over time.

The intuition is a risk/reward framing dressed in on-chain data. When long-term holders have strong conviction (a large, growing HODL Bank of unspent opportunity cost) and price is low, the ratio is small: you are being offered coins cheaply by a cohort that has repeatedly refused to sell them cheaply. That combination — low price, high conviction — is the historically attractive setup, and Reserve Risk has tended to bottom near cyclical price lows. When conviction has been spent (holders have been distributing into strength) and price is high, the ratio climbs: you are paying up to buy from people who are finally willing to sell. High Reserve Risk has coincided with cycle-top territory.

The elegance is real. Most cycle indicators look at price, or at cost basis, or at spending behaviour in isolation. Reserve Risk tries to fuse price and holder behaviour into one incentive-shaped number — the reward for holding, normalised by the conviction backing the supply. Read as a slow, regime-level gauge rather than a trigger, it tells a coherent story about accumulation zones and distribution zones.

But note what has already happened by the time you read a single Reserve Risk value: it is a ratio built on HODL Bank, which is built on accumulated opportunity cost, which is derived from coin days and the VDD family. It is a composite of series that are themselves derivatives of raw on-chain data. That layering is the source of both its expressiveness and its fragility — and it is why this is filed as a practitioner tool, not a validated model.

Reserve Risk = Price / HODL Bank
HODL Bank ← accumulated opportunity cost of NOT selling (Σ over time)
built from Coin Days and the Value Days Destroyed (VDD) family
Low ratio → high conviction + low price → attractive accumulation
High ratio → spent conviction + high price → cycle-top risk