IOUs vs UIAs
Background
In BitShares, individuals have the ability to create and issue various types of assets, known as UIAs. A type of these is documented as an EBA or Exchange Backed Asset. Commonly described as an 'IOU', an EBA is said to be backed by a 3rd party finance house or exchange, with 100% collateral in the real asset (and the main topic of this article).
Confused yet? Don't be. As we'll reveal, everything starts from a User Issued Asset (UIA), and the rest is semantics. Thereby, Exchange Backed Assets purchased on the DEX such as open.BTC, open.ETH etc are referenced as I Owe You (IOUs). In other words the right to withdraw the same amount of the backed asset from the central issuer. Compare this to depositing money in a bank - You hand over hard cash, and the bank provides a ledger receipt. You leave the bank your money, (mostly) safe in the knowledge they won't run off with it or go bust. You can withdraw the equivalent value of banknotes again in cash at any point (in different notes, and you don't care about the 'how' part). You are also confident your bank is regulated, your money is safe, and can be accessed at a hole in the wall anytime. Naturally, folks want to feel as certain about their crypto holdings as they would in any traditional bank or exchange.
BitShares then, provides the technology platform, the tools, and all the capabilities required for 3rd parties to create their own UIAs. So, if something goes wrong for an IOU, for BitShares is it just a case of "don't shoot the messenger?", or is there more to it? Let's look further at how we decide such things.
I thought BitShares being Decentralized, my assets are in my possession?
Hence the term, for UIA Exchange Backed Assets you only keep an 'IOU', not the actual asset. Consider the following quote from Mick, a user on the Telegram DEX channel earlier this week: [sic]
Bitshares is a decentralized exchange with a wallet that YOU control, not bitshares. you can only really "store" bitshares and bitassets (bitusd, bitgold, bitsilver, bitcny, etc) in the bitshares wallet. You can also have open.btc open.eth open.eos (user issued assets by openledger) in the bitshares wallet, but those are merely IOU's from openledger gateway service. If you want cold storage for btc eth, get a trezor or ledger nano s hardware wallet.
Let's get through some more basics, especially for newer BitSharians (welcome, btw). You can explore for yourself all the assets. The next few screens will walk through the Asset Explorer from the wallet, and the BitShares blockchain explorer on cryptofresh.com to reveal more.
How to: Browse BitShares UIA - User Issued Assets
~ Supplement ~
The first way to look at any of the assets created on BitShares is go to the asset explorer. Anyone can do this. Go to your wallet. (If you also want to sign up, here is a guide). Suggestion: Use Cloud model if you just want to try it out, or take the extra effort to create an Account model with a .bin file and brainkey for the long-term.
First go to the wallet and select Explore > Assets
Here we can use 'Filter' to type 'OPEN' and find OpenLedger assets under "User Issued Assets" tab:
Now we can see more information about the asset including the issuer flags. We can see a market fee of 0.2%, this enables the provider to profit from trading of the asset (fair enough). You can see the flag 'issuer may transfer asset back to himself' is set to true. How/Why/Will they use the flag? Additionally, we can see the total amount of fees that have been left unclaimed. (If kept on the DEX, these fees can also be a tool for asset liqidity). There is a lot more detail still on the topic of flags and fee pools for a UIA, perhaps a good topic for the comments (please feel free) or coming post.
The next thing we want to do is view this issuer wallet in action, as we can look at anyones account by clicking on its name, in this case openledger-wallet
OpenLedger account walletCryptofresh blockchain explorer
Another place to find more information is the cryptofresh blockchain explorer:
Here if we search for 'IOU' we can only see other assets that have been named IOU.[asset], by what appears to be private entity. Not to be confused with the ones we are interested in. Despite being referred to as such, in the blockchain all appear as UIA (see that grey colored tag), there is no explicit IOU definition or naming.
these are not the assets we're looking for – move along!Click 'Assets' to open the page below with the top volume. As can be seen, OPEN and BRIDGE are two of the most noticeable asset prefixes here, and both refer to central exchanges external to BitShares. These are the Exchange Backed Assets, which equate to an IOU for the amount of the holding you purchase. If you Google about it or read the blurb, those external companies state their guarantees to back 100% of your IOU.
Viewing the top assets in cryptofreshNext we can look at open.btc or any other EBA, but still nowhere do you see it called an 'IOU' or how it is backed. What we can see, is full information of all the trades – We have a very reliable and trusted record.
truth and only proofChange of question
So, we've got this far and found the IOU definitions, the statements on forums and marketing blurb. So next question, how to audit companies offering services on top of BitShares? How do we know they really have the 100% asset pool to back up these IOUs? Thing is, that's completely down to our judgement of those 3rd parties – In other words, the IOUs are as safe as the central exchanges holding them. What does this leave us with?
Being a DAC, and working as an open eco-system and community does help us to a large extent:
– Witnesses and Comittee are highly diligent, and together with Community will be quick to point out what they consider a scam or not, and tend to share all experiences and information good or bad.
Final saving grace ~
Exchange or entity stands to do a lot more harm to themselves (permanent loss of credibility) for having to issue assets back to themselves or pull off any kind of wrong moves with the asset holders. In effect, providers are incentiviced to gain more from doing good than doing wrong.
Conclusions
BitShares is a DAC and the core technology behind the DEX and Token Factory. However, as an open eco-system it invites participation from 3rd parties who can offer up their own assets (UIAs). When these UIA come with a guarantee of 100% backing by an external bank or exchange, we define them as EBA (Exchange Backed Assets) or IOUs.
However, this appears to be loosely defined, perhaps with good reasoning. The BitShares blockchain will merely keep an immutable ledger of these IOU transactions, it is the waterwheel, and source of truth - our "trustless" servant.
Question remains for discussion, whether the role of BitShares should be greater involved with asset issuers, or it's out of scope? Should BitShares then leave UIA/IOU as an open market, instead focussing more effort, perhaps even funded by the reserve pool or workers - on creating more committee assets like bit{usd, gold, silver, diamond, eur, jpy, thb, ~etc}, or even developing side-chains for Bitcoin, Eth, soon EOS, and more? It's a hot topic of discussion, and at times a divisive one.
credit to @xeroc, for a much older post