Corrections in OR/CR

[Dr.Kamiya]

Do you remember which law office was on the notary stamp?
In theory you should be able to go to the law office that notarized the open deed of sale to request a certified true copy.
Aside from being a witness, providing a verifiable certified copy of those important documents is part of what you pay a notary for.

[dr. d]

sa dami nang notaries public...

it was an open deed of sale, po...,
but it may give you the contact address of the first legal owner.