The number or notional value of outstanding derivative contracts that have not been closed or expired.
Open interest is best understood as part of a system rather than as an isolated definition. Its related coordinates show the mechanisms, incentives and historical records that give the term practical meaning.
Open interest describes how participants value, trade or obtain exposure to bitcoin. Market behavior can affect adoption and mining economics, but it does not rewrite consensus rules. Price evidence and protocol evidence answer different questions.
Understanding Open interest helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.
For the clearest picture, read this entry together with Bitcoin futures, Options, Options on spot Bitcoin ETPs, Forced liquidation, Perpetual funding rate. The reverse links also lead from CME Bitcoin futures, Bitcoin futures, Options on spot Bitcoin ETPs, Options.
Linked to related atlas coordinates
Grounded in a source record
Explains function and trade-offs
Part of the open Bitcoin knowledge graph