The disclosure relates to executing time bound activity chains using a baseline blockchain that encodes milestones and a realized blockchain that tracks activity relating to the milestones encoded on the baseline blockchain. Each project managed by the system may be scheduled using its own baseline blockchain, which stores time-bounded activity chains that encode milestones for that project. The realized blockchain stores performance related activity that validates and stores information indicating performance of actions related to milestones and automated transfer of value through the use of smart contracts. Each block of the realized blockchain not only references a prior block of the realized blockchain but also a corresponding baseline block, which encodes a milestone, in the baseline blockchain. Thus activity relating to progress toward a milestone may be recorded on a realized block, which refers back to a baseline block that specifies the milestone.