When we talk about verifiable storage, two phrases pop up a lot: Proof-of-Replication and Proof-of-Spacetime. These may sound like deep blockchain jargon—but they’re the core reason decentralized storage on DeStor and Filecoin is so powerful.
Let’s break them down in plain terms.
What Is Proof-of-Replication?
Proof-of-Replication (PoRep) is like a receipt for your file being accepted and stored uniquely by a storage provider.
- It proves that the provider has received your data.
- It proves that they’ve made a unique, sealed copy of it (not just duplicating someone else’s version).
- That sealed version is cryptographically bound to their physical storage hardware.
Why it matters: You can be confident that your file is being stored just for you—not fake-replicated from somewhere else.
What Is Proof-of-Spacetime?
Proof-of-Spacetime (PoSt) is how providers prove they’re still storing your data over time.
- It’s submitted on a regular schedule (usually every 24 hours).
- It proves that the sealed file is still intact and available.
- If a provider fails to submit PoSt, they get penalized—automatically.
Why it matters: You don’t just get a promise at upload time—you get ongoing, verifiable assurance that your data is still where it should be.
The Big Picture: Why Both Matter
- PoRep answers: “Did this provider store the file in the first place?”
- PoSt answers: “Are they still storing it, exactly as agreed?”
Together, they form a powerful combo: one-time proof plus continuous proof. This is what enables verifiable, decentralized, and tamper-resistant storage—with no need to blindly trust your provider.
Want to see it in action?
→ Book a Filecoin DeStor demo
→ Watch this video on how working with Filecoin DeStor works
