Sharding Roadmap
| Date | Action | Author |
|---|---|---|
| 2018-28-06 | Initial draft | Mikhail Kalinin |
| 2018-02-08 | Beacon chain section updated according to Sharding spec v2.1, Epoch-less Casper FFG, Beacon chain RPJ mini-spec | Mikhail Kalinin |
| 2018-26-09 | Move Casper and BLS milestones to Beacon chain section. Update Block proposers timing with 8 weeks, that is how much time it took to get it ready. Mark Block proposers as completed | Mikhail Kalinin |
| 2018-20-11 | Mark Attesters with primitive signature aggregation as completed in 6 instead of 3 weeks | Mikhail Kalinin |
| 2018-27-11 | Moves Phase1. Shards out of scope. Extends Roadmap with minimal libp2p implementation in Java and adds Beacon chain network stack implementation. | Mikhail Kalinin |
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2 weeks. Main chain validator contract with RANDAO
Initial stage. Addresses Main chain changes section of the spec omitting
prioritize(block_hash, value)method. RANDAO seeding is being implemented here. There is a deposit contract published here, it might need to be improved. -
8 weeks. Block proposers
Block production part of the Beacon chain, see details under Beacon chain processing section. This step implies an implementation of block import process that includes state transition, validator set shuffling and a stub for fork choice rule. Keeping real fork choice rule for the next step as new fork choice rule tied to attesting.
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6 weeks. Attesters with primitive signature aggregation
Introduce attesters. Update block production and processing with aggregated signature, see details. XOR'ed signatures are going to be used as a primitive aggregation scheme. When attestation is ready, stubbed fork choice rule will be replaced with a real one.
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2 weeks. Finality
Introduce Casper FFG running on the beacon chain. Details are in Casper FFG RPJ mini-spec.
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3 weeks. Full signature aggregation scheme
Replace primitive signature scheme with BLS one. The description is here.
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1+ month. Minimal Java implementation of libp2p
Addresses a part of libp2p that is required by Beacon chain networking stack which is based on gossipsub protocol. Parts of libp2p spec that should be implemented are listed here
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4 weeks. Beacon chain wire protocol
The wire protocol is not yet designed and it will be doable only when Beacon chain spec gets solidified. But at the moment Prysmatic Labs has something for their Demo release and it might be a good way to hit this direction.
* This roadmap is not final and may be changed according to changes in Ethereum 2.0 specification