# Proof-of-reserves reports: the three numbers that actually matter

URL: https://www.caijing188.com/proof-of-reserves-three-numbers/
Published: 2026-10-21T02:09:39+08:00 | Updated: 2026-10-27T22:09:59+08:00
Verified: 2026-10-27

## Quick answer
A proof-of-reserves report is only useful if it states a coverage ratio above 100%, a timestamp you can compare against a known balance, and the exact set of entities and chains in scope. Without all three, it is a snapshot of unknown completeness.

## Summary
Coverage ratio, timestamp and scope. A snapshot without a date is a marketing asset, not a control.

## Key takeaways
- Read the scope note before the ratio.
- Compare the timestamp to a block you know.
- Treat a partial attestation as partial.

## FAQ
Q: Does 100% coverage mean my coins are safe?
A: No. It means reported liabilities are matched by reported assets at that moment. Custody, segregation and legal claim are separate questions.
Q: Why is scope the most abused part?
A: Because a report can be accurate for one entity and silent about a related one that holds the same customer balances.