[bisq-network/proposals] Distributed reputation system (#78)

huey735 notifications at github.com
Fri Apr 26 19:47:44 UTC 2019


Without taking into account any certificate, the reputation system (only relevant to BTC buyers with fiat payment methods with risk of charge back) should contain the following elements:

- **account age** - ideally > 31 days. This value should hold the least weight as the next values will complement and replace it
- **number of days since first trade** - ideally > maximum period allowed for charge-back (6 months)
  - if => maximum period allowed for charge-back weight = 100%
  - looking at charge back statistics we could implement different weights:
    - if => 20% of maximum period allowed for charge-back weight = 20%
- **sum of days in-between trades** - ideally > 30. It serves to distinguish between 20 trades on one day and 20 trades distributed through 3 months
- **number of different trade partners** - ideally over 4
- **reputation of trade partners** - ideally over 400

Trades here refers to complete trades with age < maximum period allowed for charge-back. Successful trades are those with age > maximum period allowed for charge-back

### How we should treat newcomers BTC buyers
- **high security deposit** that is delayed in reimbursement - maybe > 7 days after end of trade limit duration
- allowed to only make **1 trade every 7 days**
- **limit trade amount** like it's already done

### How we should treat those with high reputations
 - stop counting positive trades after a certain reputation - as soon as number of days since firs successful trade => maximum period allowed for charge-back

We should have a warning in the Pending trades screen alerting users to verify that the details of their trade partner provided by Bisq match those in their bank account.

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