Module 2 of 4
The History of Hard Money
A short tour of which monies endured and which collapsed, and what determined the difference.
Film · Hard to make · 1:37
Block ———A short film for the module: what makes a money hard (the stock that exists against the new supply each year); Yap's stone money, fetched from Palau by canoe and later by the shipload; gold, whose stock is about sixty years of mining; the dollar tied to gold in 1944 and cut loose in 1971; and bitcoin's issuance schedule, whose stock-to-flow now passes gold's by arithmetic; and what fiat lacks: one bitcoin is always one bitcoin, and no one can cheaply make more. It loops while on screen; use Pause to stop it. Turn on Narration to hear it explained aloud. A transcript follows.
Read the film, with its sources
- Module 2 of 4Understanding Money, module 2: the history of hard money. Some monies lasted for centuries; others failed. What made the difference?
- HardnessOne way to judge a money is its hardness: how hard it is to make more of it. Compare the stock that already exists with the flow of new supply each year. Stock divided by flow is the number of years the flow would take to double the stock: the higher it is, the harder the money.
- YapOn the island of Yap, in the western Pacific, large stone discs called fei served as money. They were not made on Yap: they were quarried and shaped in Palau, far to the south, and brought back in canoes and on rafts. Their worth lay in the effort: the American traveller William Henry Furness called them “stone, on which labour in fetching and fashioning has been expended”.William Henry Furness, The Island of Stone Money: Uap of the Carolines (Lippincott, 1910), ch. VII
- Yap, late 1800sThen, Furness records, an Irish-American copra trader on Yap spent many years sending a schooner to Palau with islanders expert in making fei. It came back with “a full cargo of genuine wealth”, which he exchanged for tons of dried coconut and sea cucumber. Stones that had taken a dangerous voyage could now be had by the shipload.William Henry Furness, The Island of Stone Money: Uap of the Carolines (Lippincott, 1910), ch. VII
- End 2025Gold is the classic hard money. About 219,891 tonnes of it exist above ground (end 2025), and 3,672 tonnes were mined in 2025: a stock of about 60 years of mining, so a year’s output adds under 2 per cent. However much gold is wanted, the supply can grow only slowly.Metals Focus, via the World Gold Council, above-ground stocksWorld Gold Council, Gold Demand Trends full year 2025: supply
- 1944 → 1971From the Bretton Woods agreement of 1944, dollars could be converted into gold at a fixed $35 an ounce. On 15 August 1971 President Nixon closed the gold window, and no major currency has been tied to gold since. A dollar from August 1971 now buys about 12 cents’ worth: US consumer prices in Aug 2026 were 8.2 times their August 1971 level.Federal Reserve History, Nixon Ends ConvertibilityUS Bureau of Labor Statistics, CPI-U (CUUR0000SA0), not seasonally adjusted; August of each year
- BitcoinBitcoin is issued on a fixed schedule. Each block first created 50 new bitcoin; every 210,000 blocks, about every four years, the amount halves (to 3.125 since 2024), so new supply shrinks towards a limit of 21 million. Dates after 2024 on the chart are estimates.The Bitcoin Transition, the 21 million schedule (computed from the issuance rules)
- Stock-to-flowSo bitcoin’s stock-to-flow rises with every halving. By the schedule, it stood at about 120 from the 2024 halving: roughly twice gold’s 60. This is arithmetic from the issuance rules, not a forecast of any price.The Bitcoin Transition, the 21 million schedule (computed from the issuance rules)
- What fiat lacksHardness is what fiat lacks. Measured in fiat, bitcoin’s price moves, but one bitcoin is always one bitcoin, and no one can cheaply increase the supply. Few prices are set in it yet, and keeping it safely takes care.
- The Bitcoin TransitionMoney lasts when no one can cheaply make more.
The history of money is a history of hard monies being selected, working for a time, then being displaced either by harder monies or by softer substitutes. The pattern is remarkably consistent across three thousand years.
The Gold–Silver Era
For most of recorded civilisation, gold and silver served as primary monetary metals. Gold was used for large transactions and as a reserve; silver for daily coinage. The ratio between them — typically fifteen or sixteen silver to one gold — was remarkably stable for centuries.
This was not accident. It was the outcome of a competitive selection process. Other metals — copper, bronze, iron — were tried and found wanting: too abundant, too prone to counterfeiting, too heavy for significant values. Gold and silver were what emerged after the market had rejected the alternatives.
The Rai Stones
On the island of Yap, in the western Pacific, the indigenous population used large stone discs called rai as money. The stones were quarried from limestone on a distant island and transported at significant cost and risk. Their value came from the difficulty of producing them.
When European iron tools and ships arrived in the nineteenth century, the cost of producing new rai collapsed. Within a generation or two, the stones lost their monetary function. The lesson is mechanical: any money whose production cost collapses will cease to function as money.
The Demonetisation of Silver
Throughout most of the nineteenth century, silver served as money alongside gold. When industrial mining — especially the Comstock Lode in Nevada in the 1860s — dramatically increased annual silver output, the stock-to-flow of silver fell. European governments, recognising this, moved to gold-only standards in the 1870s. The United States followed in 1900.
Anyone holding silver as a store of value during this transition experienced a permanent loss of purchasing power. The market had reselected for the harder money. Those on the wrong side of the reselection paid the cost.
The Gold Standard and Its Abandonment
From the 1870s to 1914, the classical gold standard produced roughly a century of extraordinary price stability in the industrialised world. Prices were not perfectly steady — there were shorter cycles of inflation and deflation — but the long-term price level was remarkably consistent. A pound in 1900 bought about the same as a pound in 1800.
The First World War suspended the gold standard across most of Europe. Bretton Woods restored a dollar-gold arrangement in 1944. On 15 August 1971, President Nixon suspended the convertibility of the dollar into gold, ending the gold standard for the last time. Every major currency became pure fiat.
Since 1971, the US dollar has lost approximately 87% of its purchasing power. No monetary system backed by institutional promise rather than hard reserve has ever done better. This is not coincidence. It is the structure.
Where Bitcoin Fits
Bitcoin is the first asset since gold that meets the hardness criterion, and the first in history to do so with a supply cap that is mathematically enforced rather than physically constrained. In the historical sequence — shells, stones, silver, gold, fiat — it is the next selection.