I’ve read the Safecoin white paper and have some questions concerning anonymity.
The paper states that “only the past and current coin owner are known”, and I am trying to figure out what this really means. Some people are claiming that Safe coins are as anonymous as zerocoin and zerocash because of this feature, but I am not quite sure.
It is true that the safecoin transactions are not stored on a single giant blockchain like bitcoin, but the transactions do need to be validated by 32 “close” nodes. Would it be possible for these nodes to store all the transactions that they validated, allowing analysis at a later date? Or are these transactions somehow hidden from the validating nodes, such as by using zero-knowledge proofs? Are the 32 nodes always the same? And is there an easy way for these validating nodes to share the transaction details with more nodes, effectively broadcasting it to everyone?