Lending and Savings

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Lending and Savings
THORFi Lending and Savings
Overview
See the THORFI design here. 
THORFI Resources:
​THORFi Design Walk Through Article - LP University
​THORFi Overview Video - GrassRoots Cryoto
​THORFI Effects on RUNE Supply Video - Chad Barraford
FAQs
How do derived assets keep their peg, especially if the virtual depth drops significantly and increases slip?
THORChain only has one obligation with a user holding a derived asset like THOR.USD - that it will mint $1.00 in RUNE if 1.00 USD is burnt - at small qty. for numbers, 1.00 USD burnt in a pool of $10k would be 0.9999c. $1k in $10m is $999.90. Etc. Nothing will break this relationship. An impatient user will do larger swaps and pay higher fees - but they voluntarily choose this. Their option is smaller swaps and allows time for them to slow their panic. An arber will do large enough swaps to beat other arbers; in perfect competition, their costs approach their profits - fees which they pay LPs. This is why slip-based model is the best model to allow passive LPs to share in active market opportunities.
Additionally, the user or arber is not interested in holding $1.00 in RUNE, they wish to swap to $1.00 in a non-rune asset - perhaps another stable. For THOR.BTC this asset would be L1 BTC. Here another slip-fee is paid. For USD since they have a choice of the median bucket, they will swap to the cheapest stable in the bucket, arbing that stable back to the $1.00 peg; as they collect a discount in the process.
But regardless, the L1 pool(s) is what transmits the price of RUNE in the first place - what $1.00 is for USD or what 1.00₿ is - so the user is always working against a perfect peg in the slip model - they choose what fee they pay.
The majority of volume will be arbers - who will be much more shrewd and will operate closer to precise numbers. Likely they will arb the median basket and keep all the stables within 4 9’s each other.
So internally- you will never see the peg break on THORChain
What if derived assets trade on external markets? 
There could be a time in the future that THORFi assets are more liquid elsewhere. Since it takes a while to transmit information between two markets- users may see peg dislocations but this is the fault of the external market, and not how THORChain operates. Naturally, arbers will bring the markets back in line since THORChain’s 1.00 = $1.00 on-chain guarantee.
​
Does THOR.USD have any external dependences?
THOR.USD has zero external dependencies. Prices are provided in real-time via its own pools. All the non-rune capital in the system provides Liquidity around the peg. It doesn't have a centralised management, centralised Liquidity or centralised oracle's. There are no artificial incentives - all yield in the vault is provided by fees.
THORFi loans and savers provide amplified leverage. Let's say the target risk-free yield rate settles to 5% APR. In this case, every $1 in vault yield causes $20 in RUNE to be burnt. So there is a 20x amplifier. Perhaps it settled to 2% APR - Well this is a 50x amplifier on vault yield. This is an extremely powerful Relationship. If loan collateral is 10% for 200% CR, And saver no-risk rate is 2%, then 10 times as much rune will be burnt as debt rune. If most lenders simply deposit their debt into the USD vault (thus keep it in the system) then this leverage is even higher.
So THORFi is extremely powerful. In essence it convinces users to give up high-yield variable return collateral for low-yield fixed-rate; on a huge amplifier.
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Overview
THORFI Resources:
FAQs