Coinbase is a specific Markets coordinate in the Bitcoin knowledge graph. In practical terms, it identifies the subject described here: A large custodial crypto-asset platform offering buying, selling and trading; products, assets and access vary by country. This definition is narrower than promotional usage and should be read together with the implementation, date and evidence attached to the entry.
Coinbase 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.
Coinbase 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 Coinbase helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.
Primary or authoritative records make these details checkable: Coinbase operates centralized trading and brokerage services through jurisdiction-specific entities, order types, custody arrangements and fee schedules; corporate disclosures and user agreements define the current service. They should be verified before using the coordinate in analysis.
The practical limit is: an account balance is a contractual claim, not possession of private keys; Coinbase Exchange, Coinbase retail and Coinbase Custody have different workflows, and availability or regulation can change by region. 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 Custodial Exchange, Self-custody, Kraken, Bitstamp, Coinbase Custody, Counterparty risk. The reverse links also lead from Coinbase Custody, Kraken, Bitstamp.