Hash it. Anchor it. Verify it.

Create tamper-evident proof for digital content.

OwlVerify generates a cryptographic hash, stores proof metadata, and anchors the proof record to the Hedera network—so you can verify later whether content still matches what was originally recorded.

Your underlying file is not stored on-chain.

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  • Cryptographic hash for your file or content
  • Proof record anchored to Hedera—not the raw file
  • Verify later: match means unchanged, mismatch means something changed

Prove that what you have now is the same content that was originally recorded—without exposing the file itself on a public ledger.

Built for developers, startups, and teams that need verifiable files, certificates, reports, AI outputs, and digital records

How it works

  1. Submit content

    Upload a file or send content through the product or API. OwlVerify prepares a cryptographic hash—a fixed fingerprint of that exact data.

  2. Create a hash and proof metadata

    We generate the hash and store the proof metadata needed for verification. The raw document or file content is not written to the ledger.

  3. Anchor to Hedera

    The hash and proof record are anchored to the Hedera network, giving you an external, timestamped reference you can check independently.

  4. Verify anytime

    Later, submit content again and compare. A match means it’s unchanged relative to what you recorded. A mismatch means something changed.

What you can verify

Any digital artifact you can hash—broad enough to grow with your product.

  • PDFs and documents
  • Certificates and credentials
  • Reports and exports
  • Media files
  • Digital records and logs
  • AI-generated outputs
  • Signed or sealed documents
  • Compliance and audit artifacts

Why OwlVerify

Integrity without turning your product into a storage vault or a buzzword factory.

Tamper-evident by design

A change to the content changes the hash—so verification has a clear signal.

Hedera-anchored proof

Proof records sit on a public ledger you didn’t build—useful when you need an independent reference.

Sensitive files stay off-chain

Only the hash and related metadata are anchored. Your raw bytes are not the thing being published to Hedera.

Fast verification workflow

Compare new content against the recorded proof in one pass—built for operations, not theater.

API-ready

Use OwlVerify as a layer inside your platform: issue proofs, run checks, embed integrity into your own flows.

Why Hedera

Hedera is a public distributed ledger built for fast, predictable, low-cost transactions. That makes it practical to anchor content hashes and proof metadata as timestamped records—not to speculate on tokens, but to get a durable external reference.

OwlVerify uses Hedera so your proofs can be verified later without trusting only OwlVerify’s servers. The hash and proof record are what get anchored; your underlying file stays off-chain.

Think of it as an independent checkpoint: anyone with permission can confirm that the proof record you anchored still lines up with the content they’re holding.

Use cases

Concrete ways teams use verifiable proofs—not an exhaustive list.

Certificate verification

Issue a credential and anchor its proof. Recipients can verify the file they have still matches what was issued.

Report integrity

Freeze an export or filing as a proof record. Later, confirm the PDF or dataset hasn’t been swapped or edited.

AI outputs

Record a model output at a point in time. Verify whether text or files still match what you originally captured.

Files over time

Detect silent changes across handoffs, storage moves, or long-lived archives—match or mismatch, plainly.

Audit-friendly records

Pair operational logs with anchored proofs so integrity checks have a clear trail.

Issued digital artifacts

Platforms that mint or distribute digital goods can attach proofs so provenance isn’t just a promise in a database row.

All use cases

Platform and API

OwlVerify is built to sit behind your product: generate hashes and proof records programmatically, retrieve verification metadata, and compare submitted content against what was originally recorded.

  • Create proof records from your backend or pipeline
  • Expose verification to your users without rebuilding cryptography from scratch
  • Integrate with certificate systems, records software, or content workflows

Example API shape

  • POST /proofs Submit content or a hash to create a proof record
  • POST /verify Submit content and compare against a stored proof
  • GET /proofs/:id Fetch proof metadata and anchor details

Exact paths and payloads ship with your integration—this is the direction, not a guarantee of every field name.

Read about the platform

Inside the product

Register proofs, inspect anchor metadata, and run verification from a focused console.

OwlVerify dashboard listing proof records and metadata
Proofs and records
OwlVerify verification screen showing match or mismatch result
Verify content

Request access or book a demo

Tell us what you’re building—we’ll align on hash, anchor, and verify flows for your stack.

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