# Optional: check date expiration (e.g., 1 year from release) # Optional: verify feature bits match purchased edition

# Decode date_part = decode_number(raw[0:3]) edition_val = decode_number(raw[3:5]) features_val = decode_number(raw[5:10])

# Pack into 14 chars before checksum raw = encode_number(date_part, 3) + \ encode_number(edition_part, 2) + \ encode_number(features_part, 5)

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