Sample File — gated download
See gated selling from the buyer's side, for $2. A working demo of the gated flow running on a real document — the Dawn to Horizon GA4 migration report. You buy an entitlement (not a naked file), and unwrap the report under your own grant.
How it works
- Buy, and you get a grant — not a download link.
- Unwrap the full 490KB report under your entitlement, decrypted server-side at the moment you ask for it.
- There is no public URL to the file at any point, so there is no link to leak and nothing to re-host.
What else the vault holds
The envelope does not care what is inside it. The same mint, the same grant and the same hash-chained ledger carry an SBOM, a firmware image, a subscription entitlement, a legal document, a time-based architectural render, a warehouse inspection, or a PDF like this one. One envelope, one grant, one ledger — the file type is a detail, the custody is the product.
Which is why the demo is a document you can actually read. A 3D model would prove the same mechanism and tell you less, because you could not check what you received.
Private vaults
A vault is private when it is not listed anywhere and reachable only by a named grant — no public page, no discoverable URL, no anonymous path in. Private vaults hold the classes above and one more: attestations. An attestation is a signed statement that something is true — a device passed inspection, a batch was tested, a practitioner holds a current credential, a laboratory result was signed off. The statement is sealed, the grant is named, and the ledger records every party who asked for it and every one who was refused.
The distinction matters and we hold it deliberately: an attestation is a claim you can verify, not a subject's record. Keeping the claim and the record apart is what lets a counterparty confirm something is true without being handed the file it came from.
What makes it different
Most "samples" are just a smaller file to download. This one proves the mechanism, so before you sell your own work this way, you've felt it as a buyer. You can also check it without buying anything: the Verify it yourself tab asks for the document with no grant, shows you the refusal verbatim, and then shows that refusal written into the access ledger a moment later.
Under the hood
Encrypted at rest with AES-256-GCM; purchase issues a revocable entitlement; the unwrap is grant-gated and server-side; and every grant, every denial and every served byte-stream is sealed into a hash-chained ledger you can read yourself.
Mint an attributed link or QR for this product — preview it free in the modal; minting unlocks with the Channel Publish add-on.