I can scan. Where are new accounts recorded?
Here's the thing. CfB may correct me, but I suspect that all Nxt accounts already "exist", in that the network has to treat ANY public key as a valid account. The account only appears in the blockchain once a deposit is made to a given account number.
The way to scan for accounts, then, would be to scan the blockchain for transactions, and pull the account numbers involved with those transactions. Once you've scanned up to the latest block, you would only have to update your list with "new account numbers appearing since the last scan", in subsequent new blocks.
Gosh, I hope I'm right
UPDATE: If you look at the web page for the
Blockchain Explorer, you can see that there is an "accounts" field on the "Node" line near the top of the window. My gut says this field implies there are 1,499 accounts represented in the blockchain right now.