Proof of reserves is a specific Institutions coordinate in the Bitcoin knowledge graph. In practical terms, it identifies the subject described here: A method for demonstrating control of assets, which is incomplete without reliable evidence of liabilities and ownership claims. This definition is narrower than promotional usage and should be read together with the implementation, date and evidence attached to the entry.
Proof of reserves 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.
Proof of reserves belongs to the documented history and social layer around Bitcoin. Primary records can establish what was published, built or decided; motives, influence and later interpretation should remain separate from those verifiable facts.
Understanding Proof of reserves helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.
Primary or authoritative records make these details checkable: proof of reserves can cryptographically show control of selected assets at a timestamp, often with a Merkle commitment to included customer balances; a complete assessment also needs liabilities and entity scope. They should be verified before using the coordinate in analysis.
The practical limit is: asset signatures alone do not prove solvency, ownership, absence of borrowing, complete liabilities or continuing control; auditor independence, negative balances and post-snapshot movement matter. 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 Institutional bitcoin custody, Counterparty risk, Asset segregation, Liabilities, Merkle tree, Bitcoin. The reverse links also lead from Custodial Exchange, Institutional bitcoin custody, Bank bitcoin custody, Counterparty risk.