Cryptarithmetic: 1+1=0?

Transcription:

CRYPTARITHMETIC
1+1=0?

Figure out which letter represents which digit
and the number of solutions possible for the following equation

  ONE
+ ONE
-----
=ZERO

Each letter represents a single digit.
Same letters represent same digits.
Different letters represent different digits.

There can be leading zeroes.

SHIVANSH SHARMA

For any clarification, comment down below.