Methods and systems for sharing detected changes in roads using blockchains

A network comprising:

• vehicles operable to detect a change of static features in a road, where the vehicles are divided into groups of local vehicles;
• a plurality of local blockchains comprises local blocks of changes, wherein after a first vehicle publishes a change of the road among a group of local vehicles, a block of the change is integrated into a local blockchain when at least a local threshold number of the local vehicles endorse the change;
• a global blockchain comprising blocks of changes, wherein a block of the change is integrated into the global blockchain when the change is included in a local block, and at least a global threshold number of the vehicles endorse the change;
• wherein the change of the static features of a road comprises a change of a geometric feature of the road, the change of the geometric feature comprising a change of pavement widths, a change of horizontal alignment, a change of vertical alignment, a change of slope channelization, a change of intersections, or a combination thereof, and
• the integrated change of static feature of the global blockchain is configured to be applied to one or more map systems for a map update.