Canon 535. §1 In each parish there are to be parochial registers, that is, of baptisms, of marriages and of deaths, and any other registers prescribed by the Episcopal
Conference or by the diocesan Bishop. The parish priest is to ensure that entries are accurately made and that the registers are carefully preserved.

§2. In the baptismal register, a note is also to be made of ascription to a Church ‘sui iuris’ or the transfer to another Church, as well as of confirmation and of all matters pertaining to the canonical status of the faithful by reason of marriage, without prejudice to the provision of can. 1133, adoption, the reception of sacred orders, the making of perpetual profession in a religious institute. These annotations are always to be stated on a Certificate of Baptism.
[revised wording according to m.p. De concordia inter Codices, 31.V.2016]

§3 Each parish is to have its own seal. Certificates concerning the canonical status of the faithful, and all acts which can have juridical significance, are to be signed by the parish priest or his delegate and secured with the parochial seal.

§4 In each parish there is to be an archive, in which the parochial books are to be kept, together with episcopal letters and other documents which it may be necessary or useful to preserve. On the occasion of visitation or at some other opportune time, the diocesan Bishop or his delegate is to inspect all of these matters. The parish priest is to take care that they do not fall into unauthorised hands.

§5 Older parochial registers are also to be carefully safeguarded, in accordance with the provisions of particular law.