What the Bitcoin Whitepaper Leaves Out

On October 31, 2008, a programmer using the name Satoshi Nakamoto emailed a short paper to a mailing list of cryptography specialists. It described a new kind of electronic cash that two people could send to each other with no bank in between.¹ Lehman Brothers had filed for bankruptcy 46 days earlier.²

The paper never mentions Lehman. It never mentions the crisis, a bailout or a bank failure. Its eight sources cover cryptography, digital timestamps and probability: Wei Dai's b-money proposal, three papers by Stuart Haber and W. Scott Stornetta on timestamping digital documents, Adam Back's Hashcash, Ralph Merkle's work on public key protocols, and William Feller's probability textbook.³

The text leaves the crisis out. The timing and the code put it back in.

The year the system cracked

In March 2008, the Federal Reserve approved an emergency arrangement for JPMorgan Chase to absorb Bear Stearns.⁴ On September 15, Lehman Brothers announced its bankruptcy filing.² One day later, the Fed authorized up to $85 billion in credit for the insurer AIG, and the government took a 79.9 percent ownership stake.⁵ On October 3, Congress passed the Emergency Economic Stabilization Act, authorizing the Treasury to buy up to $700 billion of troubled assets at any one time.⁶

The Federal Reserve's balance sheet, the total of the loans and securities it holds, shows the scale of the rescue. It stood at about $926 billion on September 10, 2008. By October 29 it had passed $1.97 trillion. By year end it reached about $2.24 trillion, roughly 2.4 times its September level.⁷

The official verdict

In 2011 the Financial Crisis Inquiry Commission concluded that the crisis was avoidable. It cited widespread failures in financial regulation and supervision, dramatic failures of corporate governance and risk management, and excessive borrowing and risk taking.⁸

The core problem was moral hazard recklessness. The largest institutions believed the government would treat them as too big to fail. Expecting a rescue if their bets went wrong, they took large risks for large profits, and when the bets failed the public absorbed the losses.

What Satoshi said next

The whitepaper proposes payments based on cryptographic proof instead of trust in an intermediary.³ Three months later, Satoshi stated the motive in plain words. In a February 2009 post introducing the software, he wrote that "the central bank must be trusted not to debase the currency."⁹ The same post faulted commercial banks for lending out deposits in waves of credit bubbles while keeping only a fraction in reserve.⁹

He had already written a date stamp into the system. Bitcoin records transactions in batches called blocks, each linked to the one before it. The first block, created on January 3, 2009, carries a line of text citing The Times of London from that date: "Chancellor on brink of second bailout for banks."¹⁰ The same line appears in the original version 0.1.0 source code.¹¹ Sixteen days later, HM Treasury announced a new package to support bank lending.¹²

Rules no committee can change

Satoshi then built his answer into arithmetic. When he released version 0.1 in January 2009, he announced a total supply of 21 million coins and a block reward that halves every four years.¹³ The block reward is the new bitcoin paid to whoever adds the next block to the chain. The code starts it at 50 coins and halves it every 210,000 blocks, and Bitcoin Core, the main software that runs the network today, still enforces a 21 million coin limit.¹⁴

No central bank can expand that supply. No emergency meeting can change the schedule. The rules run the same way in a boom or a panic.

Why the sources look the way they do

Satoshi did not need economists to describe the problem. The headlines of 2008 described it every day. The problem called for engineering: a ledger that no single institution controls and no rescue can rewrite. The eight sources supplied the tools. The year supplied the reason.

The feature film The Bitcoin Rebellion dramatizes that story, from the cracks of 2008 to the first block in 2009 and beyond.¹⁵