I wrote a function to hash a list of byte strings. It returns a list of the hashed strings.

#lang racket
(require sha)
(define (hash-list lst)
 (if (null? lst)
  '()
  (cons (sha256 (car lst)) (hash-list (cdr lst)))))

I also wrote a function to consume a hashed list and return a list of the sums of their byte values. Here is a screenshot of my output from a basic example.