Humanity as a database: after infiltrating a religious order mandate arranged marriages encoding your input data in predicted genetic mutations of offspring. En

Humanity as a database: after infiltrating a religious order mandate arranged marriages encoding your input data in predicted genetic mutations of offspring. Ensure the religious order is hermetic so no outside data appears and that its teaching require all members to appear at a certain location at a certain time. Retrieve your data 1000 years later by appearing at the preordained spot for the Holy Query Ceremony, and examining the eye/hair colours of those gathered. Good error correction protocols are required. (This might well already be part of a Neal Stephenson novel).