Though I don't know much about incorporation in El-Savador through bitcoin but I've read about many instances for that and industries are looking for more opportunities to incorporate their own establishement or businesses also in El-Savador because of the bitcoin boom over there, there's a thread where discussions on El-Savador is being made https://bitcointalksearch.org/topic/el-salvador-has-become-the-first-country-to-make-bitcoin-legal-tender-5342087 maybe you can try as well post on the thread or reference your link there for more adequate updates those in El-Savador can offer you or link you to.