Plasma Fast Finality and Harbarger Tax

Transcript

1. Fast Finality and Harbarger Tax CEL/sg
2. Harbarger Tax? 1. You can self-assess the valuation of a property. 2. You must pay rent fee as per the property valuation. 3. If the other declares higher valuation, ownership forcibly moves. 4. So, just say true valuation of the property for you. 5. Monopoly is expensive because of the rent-fee. 6. Unpopular property is nearly public goods by default.
3. Weekly timetable is representation of the rights. Having an hour slot means she can use FF every week at that time.
4. Alice(The operator) deposits her fund
 And initialize the timetable. She compensates failed txs up to $100K USD collateral. She borrowed that fund from traditional bank or compound. show you failed tx definition at next page
5. 1. Tx included
 in childchain block? 2. No tx cancelation after enough conf? FF and Tx failure
6. Today: May 9 Bob(The merchant) self-assess rights of a time&bandwidth. He doesn't buy it, borrow it at weekly tempo. So, what he directly assess is rent-fee, valuation will be indirectly calculated. Now she has a right to get compensation up to $10K when there's tx failure on 11am-5pm of mon-sat. 1DAI 1DAI 1.5DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1DAI 1.5DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1DAI 1.5DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1DAI 1.5DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1DAI 1.5DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1DAI 1.5DAI 1.5DAI 1.5DAI 1.2DAI
7. He must deposit the Forefront Harbarger Tax of the weekly rent 1. The amount is gonna be Σ[1->h]{rh }
 where rh is he weekly rent fee of corresponding slot where h is the slot he bought
 2. All deposits are just locked state, and be called Unspent Forefront Harbarger Tax r1 r2 rh
8. May 10 Carl has been buying up 0pm~2pm for everyday at 5DAI/week rent fee up to 100K guarantee Fee: Bob's Unspent Forefront Harbarger Tax is gonna be back. And Carl must deposit his Unspent Forefront Harbarger Tax. Overlap Spent Forefront Harbarger Tax won't be back and goes to Alice 1DAI 5DAI 5DAI 1.5DAI 1.5DAI 1.2DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1.5DAI 1.5DAI 1.2DAI 5DAI 5DAI 5DAI 5DAI 5DAI 5DAI 5DAI 5DAI 5DAI 5DAI 5DAI 5DAI 1DAI
9. May 11 Bob buys back 0pm~2pm Monday-Saturday at 6DAI/week rent-fee up to 90K guarantee
 for Carl Fee: Carl's Unspent Forefront Harbarger Tax is gonna be back. And Bob must deposit it as per his self-assessed rent fee. Buy back 1DAI 6DAI 1.5DAI 1.5DAI 1.2DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1.5DAI 1.2DAI 1DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1.5DAI 1.5DAI 1.2DAI 1DAI 1.5DAI 1.5DAI 5DAI 5DAI 5DAI 1.5DAI 1DAI 5DAI 6DAI 6DAI 5DAI 5DAI 6DAI 6DAI 5DAI 5DAI 6DAI 6DAI 5DAI 5DAI 6DAI 6DAI 5DAI 5DAI 6DAI 6DAI 5DAI 5DAI 6DAI
10. May 13 Bob and Carl enjoy Fast Finality at their own bandwidth Forefront Harbarger Tax by that days would have been spent, and Alice earns rent fee.
11. Attack scenario Attack: Buy up all bandwidth just before the day of use. Motivation: Griefing to interest-conflicting merchant from evil merchant Solution:
 Set dosBond for minimum three month due to prevent one week buy up. The operator must maintain collateral amount like mobile career.
12. Availability of Fast Finality 1. The operator must stabilize bandwidth price, and so she must be reactive against market status. 2. The merchant must have auto- purchase functionality to keep enough bandwidth for her customers.
13. Conclusion Market Price Public Goods 1. Maximize liquidity. 2. The operator always can get optimal fee. 3. Monopoly is expensive. 4. Unpopular bandwidth is to be public goods by default