Here’s a simplified example of how you could generate a hop sequence:Algorithm: Use a keyed hash function like HMAC-SHA256. Inputs:Private key: A secret passphrase (e.g., "family-secret-123"). Block height: The current block number (e.g., 800,000). Optional: A date-based salt (e.g., "2025-08-23") to limit sequence predictability. Output: A geohash like "u4pruyd", which family members can decode to coordinates using a geohash library or app.