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Proof of reserve

Autonomous, reliable, and secure asset monitoring

Chainlink Proof of Reserve enables the reliable and timely monitoring of reserve assets using #ProofNotPromises.

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Industry leaders use Chainlink Proof of Reserve for its unmatched security, reliability, and compatibility. Integrate the most reliable proof of reserves solution today for automated verifications that provide unparalleled transparency to your users.

Fully-automated verifications


Reduce risk with automated, truth-based verification

Introduce automated verifications into your decentralized application to decrease risk and increase efficiency through oracle-triggered circuit breakers.

Bring enhanced transparency to your users

Publish timely and immutable on-chain attestations to bring enhanced transparency to traditional verification processes.

Prevent systemic failures and contagion

Prove on-chain and off-chain collateral reserves to help mitigate risk and protect users from unexpected fractional reserve activity.

Integrate transparent verifications of reserve assets

Asset issuers

Issuers minting on-chain tokens representing off-chain or cross-chain assets can integrate Chainlink Proof of Reserve to help provide additional guarantees that they cannot mint more tokens than assets stored in reserves.


Smart contract developers can integrate Chainlink Proof of Reserve as a circuit breaker to help ensure unexpected fractional reserve activity from issuers does not result in cascading user losses if unbacked tokens are minted.

DeFi users

Chainlink Proof of Reserve helps DeFi users get transparency into their risk exposure, increasing confidence in the backing of on-chain tokens collateralized by off-chain reserves.

Employ Chainlink Proof of Reserve across various use cases


Ensure stablecoins, CBDCs, and wrapped cross-chain assets are properly backed.


Implement a failsafe to prevent undercollateralization.


Create fully-transparent on-chain financial instruments.


Obtain collateralization data on any cross-chain asset across any chain.

What is proof of reserves?

Within the blockchain space, proof of reserves is commonly known as an independent attestation that enables centralized exchanges to publicly attest to the value of their reserves and prove their solvency. Because centralized third parties typically conduct these attestations, they can be lengthy, opaque, and time-consuming manual processes. 

Chainlink Proof of Reserve (PoR) builds upon this concept to provide a customized solution for Web3. It enables seamless, decentralized, and autonomous proof of reserves attestations by verifying collateral amounts and posting that data on-chain. With Chainlink PoR, users have more transparency, updates in real-time, and stronger guarantees around the proof of reserves’ accuracy.



Chainlink Proof of Reserve utilizes the largest decentralized collection of security-reviewed and Sybil-resistant node operators in the industry to acquire and verify reserve data.



Chainlink Proof of Reserve Roundtable

In this SmartCon 2022 roundtable, industry experts from Armanino, CACHE, Chainlink Labs, and TrueFi discuss how Chainlink Proof of Reserve brings unparalleled transparency to the Web3 space.

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