Blank with coding for the production of tooth-technical shaped parts and procedures for the identification of a blank

A method for identifying a blank having a corpus of tooth restoration material for the production of a dental shaped body by the removal of material by means of a tool held in a toolhead, wherein coding incorporating structures and disposed in the surface of the corpus is scanned by means of tool held in the tool holder or by means of a calibration pin held in the tool holder, the method comprising scanning of the coding, which includes a plurality of panels at the level of the surface of the corpus and a plurality of panels incorporating a flat structure at a level (h1, h2) differing at least from the level of the surface of the corpus, the scanning being performed such that at least one first panel of the coding is scanned, and starting from said first panel, determining and scanning a second panel from a stored assignment list of pairs of first and second panels determining a difference in level (h1, h2, h3) between the two panels of the coding obtaining the difference in level (h1, h2, h3) of a pair-related reference value (v) and comparing the reference value (v) with a pair-related expected value (e).