Open interest is a specific Markets coordinate in the Bitcoin knowledge graph. In practical terms, it identifies the subject described here: The number or notional value of outstanding derivative contracts that have not been closed or expired. This definition is narrower than promotional usage and should be read together with the implementation, date and evidence attached to the entry.
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.
Primary or authoritative records make these details checkable: open interest is the number or notional value of derivative contracts remaining open under a venue's counting method, changing as positions are created, offset, expire or settle. They should be verified before using the coordinate in analysis.
The practical limit is: open interest is not net bullishness, unique traders, leverage or capital committed, because every contract has opposing sides; cross-venue aggregation, contract multipliers and currency units require normalization. A definition, office, chart pattern or published claim is not by itself a prediction or Bitcoin consensus rule.
For the clearest picture, read this entry together with Bitcoin futures, Options, Options on spot Bitcoin ETPs, Forced liquidation, Perpetual funding rate, Leverage. The reverse links also lead from CME Bitcoin futures, Bitcoin futures, Options on spot Bitcoin ETPs, Options.