WujiSeed vs MocCards

WUJI Seed turns human memory into high-entropy BIP39 seed phrases — something previously thought impossible. THE PROBLEM WITH MEMORY-BASED SECRETS Human-chosen passwords are notoriously weak. Birthdays, names, and common phrases have extremely low entropy. That's why crypto relies on random generators — but random means forgettable, and forgettable means backups that can be lost or stolen. HOW WUJI SEED ACHIEVES HIGH ENTROPY WUJI Seed uses F9Grid, a geographic grid system that divides Earth into billions of precise cells. When you input a coordinate, it maps to a specific cell index with sub-meter precision. The key insight: when you choose 5 personally meaningful locations that span great distances and are known only to you, the combinatorial space becomes enormous. Consider: • Your grandmother's house in a small village • A hidden beach from a childhood trip • The exact bench where you had your first kiss • A remote hiking spot you never told anyone about • The corner table at a café in a foreign city These 5 locations, scattered across the globe and unknown to others, create entropy comparable to random number generators — yet they're burned into your memory forever. HOW IT WORKS 1. Enter your personal identifier 2. Input 5 geographic coordinates (the more spread out and private, the better) 3. Add memory tags for each location 4. Generate your 24-word BIP39 mnemonic Same inputs, same seed phrase — recoverable from memory alone. MAXIMIZING YOUR ENTROPY For strongest security: Choose locations spanning different cities, countries, or continents Pick precise spots, not general areas (the specific tree, not "the park") Select places only you would know or remember Avoid famous landmarks or locations shared on social media The wider your geographic spread + the more private your locations = the higher your entropy. KEY FEATURES Geographic Entropy F9Grid extracts maximum randomness from your location choices. Wide-spread, private locations yield security rivaling hardware random generators. 100% Offline All operations local. No internet. No data leaves your device. No Backup Required Your brain is the backup. Remember 5 locations, regenerate anywhere. Deterministic Same inputs always produce the same result. Test it yourself. Bank-Grade Cryptography Argon2id key derivation, BLAKE2b-256 hashing, XChaCha20-Poly1305 encryption. BIP39 Compatible Works with Ledger, Trezor, MetaMask, Trust Wallet, and all standard wallets. Privacy First No accounts. No cloud. No tracking. WUJI Seed — For the Memories That Never Fade

MocCards — more control and greater peace of mind with every payment. From advertising and business subscriptions to travel bookings and e-commerce purchases, MocCards helps you flexibly manage virtual cards and spending. Adjust limits as needed and use separate cards for different purposes to simplify payment management. FLEXIBLE LIMITS, LESS EXPOSURE OF YOUR CARD DETAILS Set and adjust spending limits on supported cards as needed to keep advertising budgets, subscription fees, and purchasing costs under control. Pay merchants using a separate virtual card number without sharing your primary credit card number with those merchants, helping reduce exposure of sensitive information and the risk of unauthorized charges. PAYMENTS FOR A WIDE RANGE OF NEEDS At merchants that accept the relevant card, pay for advertising, online business-travel bookings, AI tool subscriptions, cloud services, e-commerce purchases, logistics, and telecom services. Choose eligible cards for different business needs and manage payments for multiple purposes in one app. DEDICATED CARDS, CLEARER SPENDING Use separate cards for different merchants, subscriptions, or business purposes to keep expenses organized. View each card's balance, limits, status, and transaction history in one place to make expense allocation clearer and reconciliation easier. SECURITY TO HELP PREVENT FRAUD AND CARD MISUSE Identity verification, card controls, and applicable risk-management rules help reduce unauthorized card use. Unusual applications or transactions may be reviewed, restricted, or declined in accordance with applicable rules. If you notice suspicious spending, promptly freeze supported cards to restrict further use. Face ID or Touch ID can protect supported sign-in and sensitive actions, while account and transaction activity remains traceable. EVERYDAY FEATURES IN ONE PLACE View wallet balances and transaction details, create and manage cardholders, and apply for and manage eligible virtual cards. Complete identity verification and submit support tickets in the app. Switch between Chinese and English. Sensitive card details are displayed only in an authorized session. MocCards does not store complete payment-card numbers on its servers. MocCards is operated by Mocbase LLC. Card and payment-related services are provided by third-party service providers. Service availability, merchant acceptance, card products, limits, fees, and features may vary by account, country or region, identity-verification status, and service-provider requirements. Security measures help reduce risk but do not guarantee that all unusual transactions will be detected or prevented. Available only to eligible users aged 18 or older. Support: support@mocbase.com