Observed arrival · 2026-11-04
DateSealed turns content into a dated proof
A free tool that records timestamp evidence for text, files, photos, or public web pages using their SHA-256 hashes.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Writers and publishers documenting publication dates
- Worth noticing
- For URL inputs, the server fetches the page once and retains its URL with the hashes; the service says it is never shown publicly.
Field notes
The page distinguishes pasted text and files, which it says are hashed in the browser, from URL submissions, where its server fetches a public page once and retains the URL with the hashes. It offers downloadable proof files and links to a verification page and API. Its FAQ cautions that the timestamp only supports the existence of matching data at a given time; it does not establish authorship or truth.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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