Quark does borrow hashing functions from SIC, but has significant differences:
1. Instead of 6 rounds of hashing, 9 rounds of hashing, with 3 of the rounds applying a random hash algorithm.
2. Different difficulty adjustment algorithm.
3. Different reward calculation algorithm.
4. Quark supports transaction comments (similar to Florin). This functionality will be exposed in the UI and RPC interface in a future release.
how about resolve problem sync with network?
Quark doesn't use IRC to find nodes. Instead it uses DNS lookup to a seed node. This node is frequently too busy to accept new connections.
Try posting your IP address here, opening your port and allowing other nodes to connect to you.