01
Local first
Your browser hashes the selected file and creates the private manifest. The file and nonce are not sent to Verifyum.
Private file proofs - built by AI SENSE
Proof that outlives the website.
Create a private file proof in your browser and anchor its commitment on Solana Mainnet for free. No account, wallet or cryptocurrency is required, and the original file stays on your device.
- No file upload
- No account
- No wallet or payment
- Free to use
- Portable evidence
Commitment
sha256:8412d6863b2328c6a7ff94d49ec087b18b6fc2db0b60da8b8dea97d30ac0612b
Original file
Processed locally. Never uploaded.
How Verifyum works
A small public record with a private source.
The public proof contains what others need to inspect the blockchain record. The sensitive file data remains in the private proof draft you download and control.
02
Public anchor
Only the Verifyum commitment is written into a finalized Solana Memo transaction. AI SENSE covers the Solana network fee.
03
Portable proof
Download the private proof draft and keep it with the public proof link. Save that public link as a QR code or printable PDF receipt whenever you need to share it.
Use cases
A durable receipt for work that matters.
Verifyum is useful wherever the exact bytes of a file matter later. The portable proof stays with you, while the public anchor remains small and privacy-preserving.
Legal & commercial
Contracts and approvals
Keep evidence of the exact agreement, offer or approval package that was shared at a particular stage.
Creative work
Original work and IP
Timestamp a manuscript, design, photograph or concept file without publishing the work itself.
Knowledge
Reports and research
Preserve a verifiable reference to the exact report, dataset export or research snapshot used in a decision.
Technology
Software releases
Associate source archives, build artifacts and release bundles with a public, independently checkable timestamp.
Governance
Audit and compliance
Give policies, exports and evidence packages a portable integrity record before they move between organizations.
AI workflows
Agent decision records
Seal an agent's operating state, its instructions, prompt, model, parameters and output, so an audited decision can be shown to be the original record rather than a later revision.
Public anchoring is live and free to use. AI SENSE pays the Solana fee. Fair-use and service safety limits apply.