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Extraction Knowledgeresearch by SourceChain

Privacy notice

Early-access privacy notice

Last updated November 9, 2026. Applies to extractionknowledge.com.

Extraction Knowledge is an early-access research website. Right now the only personal information we collect is what you give us to join the early-access waitlist. This notice explains exactly what that is.

What we collect

Information stored for each waitlist entry
InformationWhy
Your email address (lower-cased)To tell you when early access opens, and to stop the same address joining twice.
How you joined (today: email form)To know which method created the entry. Google join is not offered on the public site yet.
If Google join is later enabled: Google’s account identifier for youReserved for a future option. If enabled, it would recognise a repeat Google sign-up without storing anything else from your Google account. It is not collected today.
Your consent, the wording version you agreed to, and whenTo show that you asked to hear from us.
Date you joined, and your list statusTo run the waitlist fairly and honour requests to leave it.
Which part of the page you joined from (for example “hero”)To understand which parts of the site are useful. It is not a tracking cookie and is not linked to other sites.

We do not store your name, photo, password, IP address, the Google sign-in token, or anything from Gmail, Drive or other Google services. We do not use advertising or analytics cookies.

Google sign-up (not offered yet)

The public site currently accepts early-access registrations by email only. A “Continue with Google” option may be added later. When it is, Google would confirm your email address to us. Google would send a signed statement that also includes your name and profile picture; we would check its signature and then keep only your email address and Google’s identifier for you. We would not request access to your Gmail, contacts or files. Joining would create a waitlist entry only — not an account, and not access to any private system. Google’s own handling is described in Google’s privacy policy.

Security checks

The email form uses Cloudflare Turnstile to check that a person, not an automated script, is signing up. Turnstile processes technical signals from your browser for that purpose; see Cloudflare’s Turnstile privacy addendum. The site sets one strictly necessary security cookie, __Host-ek_csrf, which protects the sign-up form and expires after two hours. We also limit how often sign-ups can be attempted from one network.

Where it is stored

Waitlist entries are stored in a dedicated Cloudflare D1 database operated by Cloudflare, Inc., separate from any other system we run. Like most websites on Cloudflare, the service keeps short-lived technical logs (such as request times and errors) to operate and protect the site; our code does not write email addresses to those logs.

Emails we send

We will email you only about Extraction Knowledge early access: when it opens, and material changes to it. We do not sell or share your address, and we do not add you to unrelated marketing. Email sending is not set up yet, so we have not sent, and cannot yet send, a confirmation email.

How long we keep it

We keep your entry until you ask us to remove it, or until early access ends and we close the waitlist, whichever is first. When an entry is deleted, it is removed from the database rather than marked hidden. Cloudflare keeps automatic point-in-time recovery data for the database for up to 30 days, so a deleted entry disappears from that recovery data when it expires.

Leaving the list or deleting your entry

Email privacy@extractionknowledge.com from the address you signed up with and ask to leave the list or to delete your entry. To protect you, we act only on requests that come from, or are confirmed by, that address. Once email sending is set up, every message will include a one-click unsubscribe link.

Verification and transactional email

When email delivery is enabled, we send a verification link so we know the address works, a short welcome after you confirm, and (to the site operator only) a private alert that a registration was verified. These are transactional messages for the waitlist, not marketing broadcasts. Reply-to for visitor mail is privacy@extractionknowledge.com.

Buyer-reported prices

The Share what you paid flow (also linked from product dossiers, price intelligence and supplier examples) is a design preview of a planned capability. It does not collect, store or publish prices today. Contributor identity would never be displayed publicly. We do not promise complete anonymity: a future collection service will need contact or linkage information for moderation and abuse prevention, and this notice will be updated before any collection starts. Individual reports stay private by default; only moderated aggregates with enough independent observations would be published after antitrust and privacy review.

Contact

Questions about this notice: privacy@extractionknowledge.com.