PoO(Proof of Online) was registered by the Korean Intellectual Property Office.
Certificate of Patent №10–1921470

A brief description of PoO is Proof of Online, which adds a process to the consensus algorithm to verify that the block is created online.

The existing attacking method BWA (Block Withholding Attack) is a method that creates long blocks in offline state and does not propagate the result to the neighboring nodes, but then connects to the online after making profits and cancels existing transactions. Therefore, it is the core of the PoO to be able to prevent the creation of blocks longer than a certain length in the offline state from the beginning.

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