1. Who we are

MELC (Math and English Learning Competition) is organized by PT Lentera Inovasi Global ("Lenterago", "we"). This policy covers melc.co.id and all MELC services.

2. Data we collect

Account data: name, WhatsApp number, email (optional), role for teacher accounts, and a password stored as a secure hash.

Competition data: NISN, school, level, grade, competition fields, answers, scores, and proctoring records (such as records of leaving the exam page).

Payment data: invoice number, amount, method, and status. We do not store card or bank account details; payments are handled by our payment provider.

Additional data when needed: a shipping address for physical add-ons, and a student ID card and photo for identity checks from the semifinal onward.

Technical data: visit source (such as UTM parameters and referring site) stored in a cookie for 90 days, and visit analytics.

3. Children’s data

Most MELC participants are under 18. Participants under 18 register together with, and with the consent of, a parent or guardian, or are registered by a parent, guardian, or teacher through a supervising account. We only ask for the data needed to run the competition.

4. How we use data

To create and secure accounts, including verifying numbers with a WhatsApp code.

To run the competition: placing students in the right category, running, proctoring, and scoring exams, and issuing certificates.

To process payments and send receipts.

To send important competition updates (schedules, results, certificates) via WhatsApp and email.

To send promotional news about practice tests and Lenterago programs, only if you agree. You can withdraw this consent at any time.

5. Sharing data

We do not sell your data. We share it only with service providers that help run MELC (hosting, database, WhatsApp and email delivery, payments, video conferencing for proctoring), and only as needed.

The certificate check page is public and shows only the name, competition, field, level, result, number, and certificate status.

6. Storage and security

Data is stored in data centers in Singapore. We use encryption in transit, hashed passwords, access controls, and audit logs for admin actions.

Data is kept as long as needed to run the competition and meet legal obligations, then deleted or anonymized. 2

7. Your rights

Under Indonesia’s Personal Data Protection Law, you have the right to access, correct, and request deletion of your data, and to withdraw consent. Some data can be changed directly in your account profile; for other requests, contact us.

8. Contact

PT Lentera Inovasi Global, Sovereign Plaza Lantai 12 Jl. TB Simatupang N. 36, Cilandak Barat, Jakarta Selatan, DKI Jakarta 12430. Email: [contact email]. WhatsApp: 0851-1122-1170.