On d and alpha
The d parameter represents the proportion of blocks made by stake pool operators (SPOs), not by the OBFT protocol.
When d=1, the network is in a static and federated mode, where the OBFT pools are making all the blocks for no profit or reward.
When d=0, the network is fully decentralized, where the stake pool operators are making all the blocks with rewards.
(1) Moving from d=1 to d=0.5
- Majority of the blocks are made by OBFT, minority by Praos
- Increase in SPO participation
- Increase in active stakes up to ~60%
- P2P governor to be turned on
- Goguen Hardfork Combinator (HFC) event planned when d=0.5 (Native Assets, Plutus Foundation, etc)
(3) Moving from d=0.5 to d=0
- Majority of blocks are made by Praos, minority by OBFT
- Disaster recovery in place
- Voltaire HFC event planned
- Replace current update system with dupdate (decentralized update)
Alpha Parameter
Alpha (constant decay) parameter will be explained in more details on 14 August.
Every epoch, d is decremented, at minimum, by alpha. Hence, knowing alpha will give you the maximum time it takes to get to d=0.
Where alpha=0.025, it will take 200 days for d to decrement to 0. Again, decrements of 0.025 is a minimum, and the actual decrement depends largely on network health.
Hence, 200 days to d=0 is the maximum expectation, and it can be accelerated with strong network health.
Postponement of first d decrement
The first decrement of d has been postponed by one epoch to 13 August.
This is due to two issues:
- Daedalus bug where 1/3 of stake pools were not showing up on dashboard (resolved)
- Some exchanges experiencing difficulties in transitioning to Shelley due to their particular infrastructures (ongoing)
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