Local bishops had the power of beatifying until 1634, when Pope Urban VIII, in the apostolic constitution Cœlestis Jerusalem of 6 July, reserved the power of beatifying to the Holy See.
Since the reforms of 1983, one miracle must be believed to have taken place through the intercession of the person to be beatified, though the medical investigations of the Church are conducted privately and are therefore subject to speculation about their methods.
The requirement of a miracle for beatification is waived in the case of someone who died as a martyr.
The feast day for a Blessed person is not universal, but is celebrated only in regions where the person receives particular veneration. For instance, Saint Kateri Tekakwitha was especially honored in the United States and Canada during her time as Blessed. The person may also be honored in a particular religious order, diocese, or organization, such as John Duns Scotus among the Franciscans, the Archdiocese of Cologne and other places. Similarly, veneration of Blessed Chiara Badano is particular to the Focolare movement; her case also demonstrates that, contrary to popular opinion, beatification may take place within a relatively short time after a person's death of an individual (for Badano, twenty years).