The tradition venerates the circlet as the actual crown of the Passion, and its custodians are careful to describe what survives: a band of rushes that would once have held the thorns, nearly all of which were detached and given away over the centuries. Historically the object can be followed with confidence only as far as Constantinople and the 1239 transfer to France; there is no continuous record to the first century and no scientific dating that would place the rushes in Roman Judaea.
Sceptical writers note that the medieval trade in Passion relics multiplied thorns far beyond what one wreath could yield, and that many rival "thorns" cannot all be genuine. The Church presents the Crown as a focus of devotion to Christ's suffering rather than as a forensically authenticated object. Given a secure provenance only to the Byzantine treasury and no dating to the Crucifixion, the relic is classed here as debated.