Nicolas Burtey gave me the contact of Carlos Artiga, his immigration lawyer. Phone is +503 7885 7514.

I explained him our case and he guided me through the process. My understanding and questions:

The full process to naturalization has the following steps:

- Obtaining a Residencia Temporal permit.
- Spending one year under Residencia Temporal, which implies staying physically in El Salvador for nine months (may be reduced to 90 days with new law)
- Requesting a Residencia Definitiva.
- Spending one year with the Residencia Definitiva
- Then apply for naturalización, which will take some months.

Documentation required to begin requesting Residencia Temporal:
- Report of having a clear criminal record
- Proof of marriage and Sofía birth certificate

Ways to obtain residencia temporal:
- Employment contract with a Salvadorian company
- Or starting a company in El Salvador (with significant revenue happening from customers in El Salvador)

Things that are fuzzy in my mind:
- During Residencia Definitiva, what are the requirements regarding physically staying in El Salvador? Is it possible to mostly not be there?
- About obtaining the Residencia Temporal:
  - Is there really no way to get it while working and invoicing foreign companies outside El Salvador?
  - About the option of starting a company in El Salvador, and the requirement of having _some_ degree of revenue coming from local Salvadorian customers... where is the limit? How much should be local revenue, how much can be foreign revenue?

I should talk with these guys next: https://www.abogados.com.sv/contactenos-abogados-el-salvador-bitcoin/