nanalLabs BlogFirst, to be clear: sealing, Bitcoin anchoring, and verification all work on the free tier. Paid plans (Lite / Pro / Max) add three things — cloud WORM storage of your originals, certificate PDFs, and public verification links.
Where originals live
On the free tier, originals exist only in the local archive on your device. With a subscription, originals are also stored in cloud WORM storage — write-once storage that cannot be modified or deleted. Capacity is cumulative: Lite 1GB / Pro 10GB / Max 30GB. Sealed originals can never be deleted, so deleting notes does not free space. See pricing (annual plans).
When you subscribe, originals of everything you sealed while on the free tier are backfilled — your pre-subscription history is not left behind.
Attachments are sealed and stored too
Images and PDFs referenced by a note are sealed along with it, regardless of which folder they sit in. If a linked file exceeds your plan's attachment limit, the note itself is held, not sealed — sealing a note while silently dropping its attachment would produce incomplete evidence, so the plugin stops and tells you. Shrink the file under the limit and the note seals automatically on the spot.
When a subscription ends — and when you delete your account
Expiry is quiet: sealing, verification, and the local archive continue; only cloud storage of new originals stops. Originals already stored remain for their retention period.
Account deletion is different. Deleting your account destroys the encryption keys for your stored originals — re-registering with the same email cannot recover them. Download what you need before deleting.
Subscribing from outside Korea
International users pay in USD with local taxes calculated automatically; seller registration and VAT filing are handled by the Merchant of Record. Usage, expiry, and auto-renewal all live on one screen at Account.