Use trailing digits as a checksum

checksum_test.go

package main

import (
	"fmt"
)

func checksum3Digit(s string) int {
	sum := 0
	for _, c := range s {
		sum += int(c) // Convert character to ASCII and sum it
	}
	return sum % 1000 // Ensure it's a 3-digit number
}

func ExampleChecksum3Digits() {
	input := "stackdump"
	checksum := checksum3Digit(input)
	fmt.Printf("%s%03d\n", input, checksum) // Prints checksum with leading zeros if needed
	// Output:
	// stackdump972
}

For use w/ pre-release user realms allowing users's to register w/ 3 digit trailing number.

Individual users could adopt this scheme to claim idempotent names despite not getting a vanity name

gnolang/gno#2827