Building management system with blockchain ledger

A building management system of a building, the building management system comprising:

• distributed devices positioned throughout the building for performing automation functions of the building management system and generating transaction information based on status changes or events occurring during normal operation of the distributed devices by compiling relevant data for the status changes or events with time and date information;
• and
• translating the data into a predefined format associated with a transaction ledger;
• and
• a validation network for receiving the transaction information, generating new ledger entries for the transaction ledger based on the transaction information, and distributing the new ledger entries, wherein the validation network is in communication with the building management system and includes nodes that validate the transaction information and determine an authoritative version of the transaction ledger based on predetermined consensus criteria;
• wherein the distributed devices perform the automation functions of the building management system based on the authoritative version of the transaction ledger by accessing validated transaction information stored on the transaction ledger and perform the building automation functions based on the building automation functions being requested within the accessed validated transaction information via building management elements of the distributed devices, and the transaction information generated by the distributed devices and stored on the transaction ledger includes temperature setpoints for areas of the building, and wherein the distributed transaction ledger is a blockchain;
• wherein the system further comprises nodes of the validation network configured to store local copies of the transaction ledger and determine an authoritative version of the transaction ledger based on predetermined consensus criteria, wherein the predetermined consensus criteria includes a scoring process for determining a longest chain among new blockchains, and the validation network evaluates and scores versions of the local copies of the transaction ledger with respect to each other to determine the authoritative version of the transaction ledger and selects the authoritative version of the transaction ledger, resulting in adoption of the authoritative version of the transaction ledger across the validation network.

A method of operation of a building management system of a building, the method comprising:

• distributed devices positioned throughout the building performing automation functions of the building management system and generating transaction information based on status changes or events occurring during normal operation of the distributed devices by compiling relevant data for the status changes or events with time and date information and translating the data into a predefined format associated with a transaction ledger;
• a validation network receiving the transaction information, generating new ledger entries for the transaction ledger based on the transaction information, and distributing the new ledger entries, wherein the validation network is in communication with the building management system and includes nodes that validate the transaction information and determine an authoritative version of the transaction ledger based on predetermined consensus criteria;
• and
• the distributed devices performing the automation functions of the building management system based on the authoritative version of the transaction ledger by accessing validated transaction information stored on the transaction ledger and performing the automation functions based on the building automation functions being scheduled within the accessed validated transaction information via building management elements of the distributed devices;
• and
• wherein the validation network validates the transaction information based on the transaction ledger and encrypted identification information included in the transaction information for the distributed devices that generated the transaction information, the transaction ledger including a ledger entry with transaction data indicating a predetermined set of devices authorized to post to the transaction ledger and the validation network validating the transaction information from the distributed devices by confirming, based on the transaction ledger, that the distributed devices that generated the transaction information were authorized to post to the transaction ledger.