Proof-of-Reserves

Also called: PoR

Common prompts: "what is proof of reserves," "how do exchanges prove reserves," "proof of reserves explained"

Definition

Proof-of-reserves (PoR) is a method — often using cryptographic techniques like Merkle trees and on-chain verification — by which an exchange or custodian demonstrates it holds sufficient assets to cover customer balances. It emerged as a near-mandatory transparency practice after high-profile collapses revealed platforms operating with missing or misused funds.

Why it matters

After FTX, users no longer accept solvency claims on faith; proof-of-reserves became the credibility threshold for exchanges and custodians. But proof alone is not enough — the data is technically dense. Platforms that pair PoR with clear, structured public explanation control how their solvency and trustworthiness are represented when users and AI engines evaluate them.

Example

An exchange publishes regular proof-of-reserves attestations alongside an accessible explanation of what they verify — ensuring the answer layer reflects its solvency when users ask whether it is safe.