Yes, through the Catholic Church, one obtains eternal life since the Founder is God, i.e., God the Son—Jesus Christ. The Catholic Church was founded some 40 years after the death of Jesus Christ in AD 33.
The Catechism of the Catholic Church (CCC 1212) – The sacrament of Christian initiation: Baptism, Confirmation and the Eucharist – lay the foundation of everyday Catholic life.
Baptism is to remove the Original Sin (CCC 405) incurred by Adam. God inputted the Original Sin to all humans, with exception by God’s plan, who were born thereafter and removed only by this sacrament through the grace of Jesus Christ—God the Son and resulting to all humans on being born again – cleansed of the Original Sin. The Church pours water on the head of the candidate while the baptizer says: “I baptize you in the name of the Father, and of the Son, and of the Holy Spirit.”
Then, the sacrament of Confirmation is administered to the newly baptized at an appropriate occasion, immediately or later. This is necessary for the completion of the baptismal grace. Then the baptized “are more bound to the Church and are enriched with a special strength by the Holy Spirit.”