Observed arrival · 2026-09-18
URLstamp Keeps a Cryptographic Receipt for Webpages
URLstamp captures a public webpage, calculates its SHA-256 hash, and timestamps that hash on the Hedera Hashgraph.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Researchers, journalists, and investigators preserving public web evidence
- Worth noticing
- It blocks private networks, local addresses, and non-standard ports, limiting captures to public HTTP/HTTPS URLs.
Field notes
The page presents a three-stage workflow: capture a webpage with contextual metadata, calculate its exact SHA-256 hash, and store that hash through Hedera Hashgraph. It accepts public HTTP/HTTPS addresses but explicitly rejects private networks, local addresses, and non-standard ports. The homepage frames independent hash comparison as the verification step, although the extract does not expose a sample record or the post-submission results.
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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