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What is digital scarcity?
Digital scarcity is the ability to create a digital item that cannot simply be copied, so that only a fixed or limited number of units can exist and be owned. Before blockchains, digital files could be duplicated endlessly; a shared ledger lets a network enforce a limit everyone can check.
Where people disagree
Supporters say provable scarcity is a genuine invention: for the first time a digital asset can have a limited, publicly auditable supply without a central issuer, much as Nick Szabo described bits made unforgeably costly like gold. A fixed rule, checkable by anyone running the software, replaces reliance on an issuer's restraint.
Critics say scarcity of one coin is not scarcity of the asset class. The BIS notes a cryptocurrency can split into two subnetworks of users and that coordination on the ledger can break down at any time, and argues that a predetermined supply produces unstable value rather than reliability.
What it means for you
A coin's supply limit is a rule in its software that you can verify, not a promise from a company. But the limit applies to one network's units only: a chain can split in a fork and new coins can be launched, so the scarcity of one asset does not make crypto as a whole scarce.
How it works
Nick Szabo's 2005 bit gold proposal sought bits with the 'unforgeable scarcity' of precious metals, made costly to create through proof-of-work and recorded with minimal dependence on third parties; he noted that cost depends on hardware, so better technology can cheapen production. Bitcoin's version is a supply rule: bitcoin.org says issuance halves over time until it stops at 21 million coins. Digital scarcity is the technical capability; sound money is the economic argument some build on it. BIS economists note a cryptocurrency can split into two subnetworks of users.
Sources: Nick Szabo, Bit gold (2005), bitcoin.org: Frequently Asked Questions, BIS Annual Economic Report 2018, Chapter V: Cryptocurrencies: looking beyond the hype · checked 4 October 2026
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