Abstract: Embodiments of the present disclosure provides protocols, methods and systems which provides advantages such as the resistance of centralisation of mining on a blockchain network, preferably a Proof-of-Work blockchain. A method in accordance with an embodiment may comprise generating a plurality of non-parallelisable challenges (or “puzzles”) and allocating one of said plurality of challenges to each miner on the network. The miner uses an inherently sequential (non-parallelisable) algorithm to find a solution to his allocated challenge. The challenges are generated by a committee of nodes, and a new set of challenges is generated for each block.

Abstract: The invention provides for tracking and rewarding commuters according to their contribution to unclogging roads by opting for alternative Transport forms and improving their health and the health of the environment. In particular, the invention relates to commuters who travel under human power to and from their place of work and who sign up as subscribers to a managed system that tracks their travel events, compares data gathered about the event with other events and determines whether or not the event qualifies as a commute, in which case an account of the user is credited. When the accumulated credit in the account reaches a threshold amount, the user qualifies for receiving a reward such as by means of a value token.

Abstract: The invention provides for tracking and rewarding commuters according to their contribution to unclogging roads by opting for alternative Transport forms and improving their health and the health of the environment. In particular, the invention relates to commuters who travel under human power to and from their place of work and who sign up as subscribers to a managed system that tracks their travel events, compares data gathered about the event with other events and determines whether or not the event qualifies as a commute, in which case an account of the user is credited. When the accumulated credit in the account reaches a threshold amount, the user qualifies for receiving a reward such as by means of a value token.

Abstract: This invention provides for tracking and rewarding commuters according to their contribution to unclogging roads by opting for alternative transport forms and improving their health and the health of the environment. In particular, the invention relates to commuters who travel under human power to and from their place of work and who sign up as subscribers to a managed system that tracks their travel events, compares data gathered about the event with other events and determines whether or not the event qualifies as a commute, in which case an account of the user is credited. When the accumulated credit in the account reaches a threshold amount, the user qualifies for receiving a reward such as by means of a value token.

Abstract: This invention provides for tracking and rewarding commuters according to their contribution to unclogging roads by opting for alternative transport forms and improving their health and the health of the environment. In particular, the invention relates to commuters who travel under human power to and from their place of work and who sign up as subscribers to a managed system that tracks their travel events, compares data gathered about the event with other events and determines whether or not the event qualifies as a commute, in which case an account of the user is credited. When the accumulated credit in the account reaches a threshold amount, the user qualifies for receiving a reward such as by means of a value token.