Clockdo – Publish Date Proof & Content Timestamp

Clockdo helps WordPress site owners protect their publish date by generating a verifiable content timestamp.

When your post goes public, Clockdo creates a deterministic fingerprint (SHA-256) and requests an OpenTimestamps proof. This allows you to independently verify that your content existed at a specific time — useful for documentation, plagiarism disputes, and publish date verification.

Features

• Generate per-post timestamp records
• Request OpenTimestamps proof
• Export .ots and manifest files
• Optional public meta tags and post footer with verification link
• Independent verification using standard tools

Use Cases

• Prove when an article was first published
• Add a visible publication record to your posts
• Protect against plagiarism disputes
• Maintain an independent timestamp history
• Provide verification material for disputes or takedown cases

English (Summary) * Generate per-post records and proof history in the dashboard. * Save proof artifacts to your WordPress uploads folder. * Optionally inject public meta tags and/or a “Verify” footer link. * Proofs are designed to be independently verifiable with standard OpenTimestamps tools.

Privacy

This plugin may collect and store: * WordPress post metadata (post ID, URL, timestamps), * deterministic hashes (SHA-256), * proof IDs/statuses, * proof artifacts written to local disk under wp-content/uploads/clockdo-ots-private/.

Outbound requests: * This plugin connects to a remote timestamping API (configured by you) to request proofs. * Depending on configuration, it may upload manifest.json and/or export.json (which can include post title and content).

Public disclosure: * If you enable meta injection or public verify links, your public pages may expose a hash/canonicalization identifier and a verification link.

See the included docs (for operators): * assets/docs/privacy.md * assets/docs/third_party_services.md * assets/docs/data_deletion_uninstall.md

Third Party Services

This plugin connects to the following external services:

1. Clockdo Timestamping API (ots-api.clockdo.com)

   • Used to register sites, submit timestamp requests, and check proof status.
   • Endpoints called: /api/v1/public/sites, /api/v1/public/site-stamps, /api/v1/site/me, /api/v1/stamps/{id}/
   • Data sent: site domain, post URL, SHA-256 hash, manifest/export JSON.
   • Service homepage: https://ots.clockdo.com
   • Privacy policy: https://ots.clockdo.com/privacy
   • Terms of service: https://ots.clockdo.com/terms

2. Clockdo Verification Page (ots-verify.clockdo.com)

   • If public verify links are enabled, post pages may link to this domain for independent proof verification.

All outbound connections are made via the WordPress HTTP API (wp_remote_post / wp_remote_get). The API Base URL is configurable; the above domains are defaults.

See also: assets/docs/third_party_services.md

Uninstall

Uninstall removes plugin options and database tables, but proof files may remain. To fully remove local data, delete wp-content/uploads/clockdo-ots-private/ after uninstall.

Disclaimer

This plugin provides timestamping and verification tooling. It is not legal advice, not a certification service, and does not determine ownership.