A health supervision system, comprising: - an identification station, configured to obtain at least one first data item indicating an identity of a user, - a health station configured to obtain at least one second data item indicating a health situation of the user identified, - at least one local data repository, and - a control unit, configured for: - receiving the at least one first data item and the at least one second data item, - storing the at least one first data item and/or the at least one second data item in the at least one local data repository, wherein the health supervision system is characterized by the fact that the control unit is further configured for: - calculating a string, using a cryptographic function, as a function of the at least one first data item and/or the at least one second data item, wherein: - each string has a time stamp associated with it, - the string is biuniquely matched with the at least one first data item and/or the at least one second data item from which the string is calculated, and/or - the at least one first data item and/or the at least one second data item cannot be obtained from the string, - transmitting the string to a distributed architecture database of the distributed ledger type to write the string to the distributed architecture database. - an identification station, configured to obtain at least one first data item indicating an identity of a user, - a health station configured to obtain at least one second data item indicating a health situation of the user identified, - at least one local data repository, and - a control unit, configured for: - receiving the at least one first data item and the at least one second data item, - storing the at least one first data item and/or the at least one second data item in the at least one local data repository, wherein the health supervision system is characterized by the fact that the control unit is further configured for: - calculating a string, using a cryptographic function, as a function of the at least one first data item and/or the at least one second data item, wherein: - each string has a time stamp associated with it, - the string is biuniquely matched with the at least one first data item and/or the at least one second data item from which the string is calculated, and/or - the at least one first data item and/or the at least one second data item cannot be obtained from the string, - transmitting the string to a distributed architecture database of the distributed ledger type to write the string to the distributed architecture database. - receiving the at least one first data item and the at least one second data item, - storing the at least one first data item and/or the at least one second data item in the at least one local data repository, wherein the health supervision system is characterized by the fact that the control unit is further configured for: - calculating a string, using a cryptographic function, as a function of the at least one first data item and/or the at least one second data item, wherein: - each string has a time stamp associated with it, - the string is biuniquely matched with the at least one first data item and/or the at least one second data item from which the string is calculated, and/or - the at least one first data item and/or the at least one second data item cannot be obtained from the string, - each string has a time stamp associated with it, - the string is biuniquely matched with the at least one first data item and/or the at least one second data item from which the string is calculated, and/or - the at least one first data item and/or the at least one second data item cannot be obtained from the string, - transmitting the string to a distributed architecture database of the distributed ledger type to write the string to the distributed architecture database.