The documentation of births is a practice widely held throughout human civilization, especially in China, Egypt, Greece, Rome, and Persia. The original purpose of vital statistics was for tax purposes and for the determination of available military manpower. In England, births were initially registered with churches, who maintained registers of births. This practice continued into the 19th century. The compulsory registration of births with the United Kingdom government is a practice that originated at least as far back as 1853. The entire United States did not get a standardized system until 1902.
Most countries have statutes and laws that regulate the registration of births. In all countries, it is the responsibility of the mother's physician, midwife, hospital administrator, or the parents of the child to see that the birth is properly registered with the appropriate government agency.
The actual record of birth is stored with a government agency. That agency will issue certified copies or representations of the original birth record upon request, which can be used to apply for government benefits, such as passports. The certification is signed and/or sealed by the registrar or other custodian of birth records, who is commissioned by the government.
The right of every child to a name and nationality, and the responsibility of national governments to achieve this are contained in Articles 7 and 8 in the United Nations Convention on the Rights of the Child: "The child shall be registered immediately after birth and shall have the right from birth to a name, the right to acquire a nationality..." (CRC Article 7) and "States Parties undertake to respect the right of the child to preserve his or her identity, including nationality, name and family relations..." (CRC Article 8).
...it's a small paper but it actually establishes who you are and gives access to the rights and the privileges, and the obligations, of citizenship.