What is Proof of Reserve?
Proof of reserve (PoR) is an independent, on-chain attestation that a tokenized asset is fully backed by the assets it claims to hold. Chainlink Proof of Reserve is the most widely used: it publishes the verified reserve amount on-chain so anyone can check that a token's backing matches its circulating supply.
Also called: proof of reserve · PoR · Chainlink Proof of Reserve · reserve attestation
How proof of reserve works
An oracle network such as Chainlink reads reserve data from the custodian or fund and publishes it on-chain as a feed. Smart contracts and dashboards can then compare the reported reserves against the token's circulating supply, so any shortfall is visible immediately rather than discovered after the fact. Proof of reserve is consumed in production by tokenized treasuries and stablecoins including BUIDL, BENJI, OUSG, USDC, USDT, and PAXG.
What proof of reserve does and does not prove
PoR replaces a 'trust us' claim with a verifiable, on-chain reserve figure, and for tokenized treasuries and stablecoins it has become a baseline expectation rather than a feature. It attests the reported reserve amount; it does not, on its own, audit the quality of every underlying asset or remove issuer, custody, or smart-contract risk.
Frequently asked questions
Does proof of reserve guarantee a token is safe?
No. Proof of reserve verifies that reserves are reported on-chain and can be checked against supply, but it does not remove issuer, custody, smart-contract, or off-chain risk. It is one transparency signal, not a guarantee.
Where this shows up live
On the desk
Source, as-of time and provenance rules
Every figure on those pages carries its source and as-of time. Nothing is shown when the upstream is unavailable.
Read the desk note
The longer version, written from the desk: The laws and pipes tokenization actually runs on.
Related terms
- Attestation — An attestation is a signed statement by a named party that a specific fact was true at a specific time — reserves held, a price observed, an identity verified.
- Tokenized Treasury — A tokenized treasury is a money-market or short-term US Treasury fund issued as a blockchain token that pays yield on-chain.
- Real-World Asset (RWA) — A real-world asset (RWA) in crypto is an off-chain asset — a Treasury bill, equity, fund, bond, commodity, or property — represented as a blockchain token.
More in Compliance
Attestation · Eligibility (US vs Non-US) · KYC / AML Gate · ONCHAINID · T-REX (ERC-3643) · Transfer Agent
Informational only · not financial advice. See the live numbers on the data desk, the sourcing rules in the methodology, or the day's stories in the newsroom. · ← All glossary terms