I know about market pegged assets, but I have not heard of user-issued assets.
market pegged assets have zero supply and shares are created by shorts (being bought by someone going long) .. this is what happens in the bitUSD
in contrast, user-issued assets are similar to what we see in NXT and counterparty. A user creates a user-issued asset on the blockchain and defines a max supply. That particular user can then issue up to max supply shares from the asset and sell them as IPO in the exchange.
The assets currently available on BTSX can be seen from blockchain_list_assets
in the console.
Some of them are marked with ISSUER=MARKET .. these are market-pegged .. the others are user-issued assets.
Note, that anybody can create BOTH kinds of assets on the blockchain paying a relatively high fee of currently >300k BTSX
Whether you get a pegged, or non-pegged asset can be defined with a variable in wallet_asset_create.
Here's the help to that command:
delegate (locked) >>> help wallet_asset_create
wallet_asset_create <symbol> <asset_name> <issuer_name> [description] [data] [maximum_share_supply] [precision] [is_market_issued] Creates a new user issued asset
Creates a new user issued asset
symbol (asset_symbol, required): the ticker symbol for the new asset
asset_name (string, required): the name of the asset
issuer_name (string, required): the name of the issuer of the asset
description (string, optional, defaults to ""): a description of the asset
data (json_variant, optional, defaults to null): arbitrary data attached to the asset
maximum_share_supply (real_amount, optional, defaults to 1000000000000000): the maximum number of shares of the asset
precision (int64_t, optional, defaults to 1000000): defines where the decimal should be displayed, must be a power of 10
is_market_issued (bool, optional, defaults to false): creation of a new BitAsset that is created by shorting
I recommend to NOT just play around with this command in the main net as it comes with high fees!