Which technology? Proof of work or proof of stake please?
Algorithm of consensus is neither PoW nor PoS. A core in this algorithm is determinism established by the positions of transactions in the chain. The qualified witnesses approve that determinism. You can find more details concerning Byteball consensus in OP.
It's essentially delegated proof of stake with twelve validating nodes, all of which are operated by a single person. Maybe should just rebrand to TonysDatabaseCoin.