1) Who we are and how to contact us
Yellow Blue Ledger Education Ltd is a UK-based educational publisher that produces neutral, source-led explanations of blockchain and digital asset technology. We do not offer financial products or services, and we do not provide recommendations to buy, sell, trade, or exchange any asset.
2) What this policy covers
This policy covers personal data collected when you browse our pages, interact with our cookie banner and cookie preferences panel, and contact us. It also explains the categories of cookies we use, the tools that may be activated when you consent, retention periods, and your rights (including GDPR rights where applicable).
If you are looking for how we write and review educational content, see our Editorial Policy.
3) Cookie categories 🍪 (exactly three)
1. Essential cookies
Purpose: core site functionality, security, and session management.
Examples: session_id, csrf_token, cookie_consent_status.
Consent required: No. These cookies are activated automatically because they are necessary for the website to function and to remember your cookie choices.
Retention: session duration or up to 12 months for preference storage.
2. Analytics cookies
Purpose: measuring traffic, user behavior, and site performance.
Tool: Google Analytics 4.
Examples: _ga, _ga_XXXXXXX, _gid, _gat.
Consent required: Yes. Analytics cookies are activated only after you accept them through our cookie banner or the cookie preferences panel.
Retention: up to 14 months.
3. Marketing / advertising cookies
Purpose: remarketing, personalized ad delivery, and conversion tracking.
Consent required: Yes. Marketing cookies are activated only after you accept them through our cookie banner or the cookie preferences panel.
Retention: up to 540 days (Google Ads default).
4) Marketing cookies: required disclosures
Third-party vendors, including Google, use cookies to serve ads based on a user's previous visits to this website and other sites on the internet.
We may work with advertising partners such as Google and Meta to deliver advertisements tailored to your interests across various websites and platforms.
We may use remarketing services to advertise to previous visitors of our website. After visiting our site, you may see our ads on other websites, apps, or platforms you visit.
Advertisements may appear across Google services including YouTube, Gmail, and the Google Display Network.
We use the following tracking technologies on this website:
- Cookies (first-party and third-party)
- Tracking pixels (Google Ads tag / gtag.js, Meta Pixel)
- Device identifiers (browser fingerprint, IP address)
- Conversion event tags
We use conversion tracking to understand which advertisements lead to actions on our website such as form submissions, calls, or purchases. This allows us to measure campaign effectiveness and allocate budget appropriately. Conversion data may be shared with Google Ads and Meta.
Advertising and analytics technologies active on this site:
- Google Ads (gtag.js / Google Tag Manager)
- Google Analytics 4
- Google Remarketing Tag
- Meta Pixel (Facebook / Instagram)
You may opt out of personalised advertising at any time:
- Google Ads Settings: https://adssettings.google.com
- Your Online Choices (EU): https://www.youronlinechoices.eu
- Network Advertising Initiative: https://optout.networkadvertising.org
- Digital Advertising Alliance: https://optout.aboutads.info
Opting out does not remove ads entirely. You will continue to see non-personalised advertisements.
Link:
5) Consent requirements
Our cookie banner offers three options: Accept All, Reject Non-Essential, and Manage Preferences. Analytics and marketing cookies are not activated until you provide consent.
By clicking 'Accept All Cookies', you consent to the storing of cookies on your device for analytics and advertising purposes, including personalised advertising delivered by Google and Meta. You may withdraw consent at any time through the cookie preferences panel without affecting the lawfulness of processing that occurred before withdrawal.
Users in the European Economic Area and the United Kingdom receive this consent notice in compliance with the General Data Protection Regulation (GDPR) and UK GDPR. Marketing and analytics cookies are activated solely after explicit, informed, freely given consent under GDPR Article 6(1)(a). Consent is recorded with a timestamp and may be audited upon request.
You may withdraw consent at any time by clicking 'Manage cookie preferences' in the website footer, or by clearing cookies via your browser settings. Withdrawal does not affect processing that occurred while consent was valid.
We store your cookie choice in localStorage for 12 months. Essential cookies remain enabled. You can update your selection at any time from the footer.
6) Data Sharing with Advertising Partners
We share certain data with advertising partners for campaign delivery and measurement. Recipients and the data categories shared include:
Cookie identifiers, conversion events, anonymised behavioural data, remarketing lists. Governed by Google's Privacy Policy: https://policies.google.com/privacy
Pixel events, conversion data, custom audiences. Governed by Meta's Data Policy: https://www.facebook.com/privacy/policy
We do not sell personal data. All transfers to Google and Meta operate under Standard Contractual Clauses where applicable. Data is processed for ad targeting and campaign measurement only, not resold to unaffiliated third parties.
Google and Meta may use this data across their own platforms in accordance with their respective policies. We encourage users to review those policies directly.
7) Lead Forms and Contact Requests
When you submit a contact form, request a quote, or register interest in our services, we collect the information you provide. This typically includes: full name, email address, phone number, and your message.
Legal basis: consent (GDPR Art. 6.1.a) and, where a service relationship exists, performance of a contract (GDPR Art. 6.1.b).
Retention: form submission data is retained for up to 2 years from the date of submission, unless a longer period is required by applicable law.
You may request deletion of your data at any time by contacting us at the email address in this policy.
A link to this Privacy Policy appears adjacent to every submission button on this site. Submitting a form constitutes acknowledgment of this policy.
8) Google Services and Advertising
This website uses the following Google services:
- Google Analytics 4: collects anonymised usage data, device info, and behavioural signals. IP anonymisation is enabled. Data retention is set to 14 months. Users may opt out via the Google Analytics Opt-out Browser Add-on: https://tools.google.com/dlpage/gaoptout
- Google Ads Conversion Tracking: records when a user completes a defined action (form submission, call, purchase) after clicking one of our ads. This data is used solely for measuring ad campaign performance.
- Google Remarketing: allows us to show ads to previous visitors across Google's network. Remarketing lists are not created from sensitive data categories (health, finance, religion, sexual orientation).
- Google Tag Manager: deploys tracking tags on our behalf. No personal data is collected by GTM itself; it acts as a container for the tags listed above.
Google's advertising products are governed by: https://policies.google.com/technologies/ads
9) Meta Advertising Services
This website uses the Meta Pixel to measure the effectiveness of our advertising on Facebook and Instagram. The pixel may record:
- Page views and time on site
- Specific conversion events (form submissions, purchases)
- Custom audience membership for retargeting purposes
We do not use the Meta Pixel to collect sensitive personal data, nor to target users based on health status, financial situation, religion, political views, sexual orientation, or any other special-category attribute prohibited under Meta's advertising policies.
Meta acts as an independent data controller for data collected via its Pixel and processed within its own platform. Refer to Meta's Data Policy: https://www.facebook.com/privacy/policy
To manage your ad preferences on Meta platforms, visit: https://www.facebook.com/adpreferences/
10) Prohibited content self-declaration
This website does not promote, sell, or facilitate access to prohibited product or service categories including but not limited to: weapons, controlled substances, counterfeit goods, gambling services (unlicensed), adult content, or services that make misleading health or financial claims. All advertising conducted through Google Ads and Meta Ads complies with the respective platform policies in full.
11) Landing page integrity statement
The content of this website accurately represents the products and services advertised. No bait-and-switch practices are employed. The experience delivered to users arriving from paid advertisements is identical to the experience for all other visitors. Cloaking, automatic redirects, and content variation by traffic source are not used on this website.
12) Children's privacy
This website is not directed at individuals under the age of 16. We do not knowingly collect personal data from minors. If we discover that data has been collected from a person under 16 without verifiable parental consent, we will delete it promptly. Contact us at the address in this policy if you believe we have received data from a minor.
13) International data transfers
Personal data collected through this website may be transferred to and processed in countries outside the European Economic Area, including the United States, where Google LLC and Meta Platforms, Inc. are based.
These transfers are conducted under Standard Contractual Clauses (SCCs) approved by the European Commission, which provide appropriate safeguards for personal data. A copy of the applicable SCCs can be requested by contacting us directly.
14) User rights (GDPR Articles 15-22)
If you are located in the EEA or UK, you have the following rights:
- Access (Art. 15): request a copy of data we hold about you
- Rectification (Art. 16): correct inaccurate or incomplete data
- Erasure (Art. 17): request deletion (right to be forgotten)
- Restriction (Art. 18): limit how we process your data
- Portability (Art. 20): receive your data in a structured, machine-readable format
- Objection (Art. 21): object to processing based on legitimate interest
- Withdraw consent (Art. 7.3): revoke consent at any time without penalty
To exercise any right, email us at [email protected]. We will respond within 30 days.
You also have the right to lodge a complaint with your local supervisory authority:
- EU users: https://edpb.europa.eu
- UK users: https://ico.org.uk
15) What data we collect
Depending on how you use the website, we may collect the following categories of data:
- Full name
- Email address
- Phone number
- Form submission content
- IP address
- Browser type and version
- Device type and operating system
- Cookies and tracking identifiers
- Usage data (pages visited, time on site, click paths)
- Conversion events (form submits, calls, purchases)
16) Legal basis for processing (GDPR Art. 6)
Legal basis: consent (Art. 6.1.a) and contract performance (Art. 6.1.b) where a service relationship exists.
Legal basis: consent (Art. 6.1.a).
Legal basis: consent (Art. 6.1.a).
Legal basis: legitimate interest (Art. 6.1.f).
17) Retention periods
We keep data only as long as needed for the purposes described in this policy:
18) Security measures
We use reasonable technical and organisational measures to protect personal data, including access controls, secure administration practices, and minimisation of data where possible. No method of transmission or storage is completely secure, but we aim to reduce risk and respond promptly if an incident is identified.
19) Changes to this policy
We may update this Privacy Policy to reflect changes in our practices, tools, or legal requirements. Changes are notified via a homepage banner at least 14 days before taking effect, and we update the “Last Updated” date at the top of this page.
20) Contact
If you have questions about this policy, want to exercise your rights, or want to request deletion of contact data, please contact us: