The form presented below enables you to ascertain that the work (piece) you own is authentic.
To achieve this you must be in possession of a certificate exclusively issued by Christian Boltanski from this site.

The form presented below enables you to ascertain that the work (piece) you own is authentic.
To achieve this you must be in possession of a certificate exclusively issued by Christian Boltanski from this site.

Please enter the number of the certificate you have received :

Please enter your e-mail address :