To agree on what transactions to commit (i.e., achieving consensus), it uses a voting system with weight based on the amount of currency an account holds.

[2][3] Nano was launched in October 2015 by Colin LeMahieu to address the Bitcoin scalability problem and was created to reduce confirmation times and fees.

[11] The victims then launched a class-action lawsuit against BitGrail owner Francesco Firano for recoupment, inside the Florence Courthouse.

[12] The Italian police branch Network Operations Command (Italy) alleged the Bitgrail founder had conducted fraud.

[15][16] It is the first cryptocurrency to use a directed acyclic graph data structure,[17] by having a "block" consisting of only one transaction and the account's current balance.