I am new to the community and I was wondering what is the data structure used by Safecoin to store the transactions immutably. Is it DAG if it isn’t Blockchain and what mechanism does Safecoin employs to prevent spams as it is fee-less ??
Transactions are not stored.
The revised RFC for safecoin has not been created yet so the mechanisms are not yet formalised. But doing a search and reading should net you some discussions about this. (Sorry have not time to find the links but others more than likely will)