The invention relates to a method of binding a digital representation of an actual event with the real time of the occurrence of the actual event. The method comprises acquiring a source event data S-ED of an actual source event SE, and sending a representation of the source data ED to an immutable database (203) for storing and real-time timestamping, calculating a hash code HC using hash functions having on the input at least: a data describing state of the immutable database (203), the source data S-D and the timestamp of the source data S-D, converting the hash code HC to a representation of a hash code HC and storing the method used to perform the conversion, presenting a representation of the hash code HC in real time so to incorporate said representation into the realm of the source event SE, in order to create a confirmation event CE, the confirmation event CE being a source event SE with physically present representation of the hash code HC and acquiring a confirmation event data C-ED of the confirmation event CE and sending a representation of the confirmation data C-D to the immutable database (203) for storing and instant timestamping.