English translation: The appearing party thus states and executes this deed before me,
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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Spanish term or phrase:
Así lo dice y otorga el compareciente
The appearing party thus states and executes this deed before me,
As was stated and certified before me by (the parties present)
Explanation: It DOES sound like a notary public. In this case, he/she is signing a public title deed, and the parties come before him/her to have it certified.
There might be a better way to say "the parties present", though...