Sharding Implementation

References

• Roadmap: https://github.com/ethereum/ethereumj/wiki/Sharding-Roadmap
• The codebase: https://github.com/ethereum/ethereumj/tree/research/sharding
• Beacon chain milestone: https://github.com/ethereum/ethereumj/projects/4

Progress

Each of the following sections refers to a corresponding item of the Roadmap.

Main chain validator contract with RANDAO

Issue	Title	Status	PR
1126	RANDAO mechanics	Done	1133
1127	Registration of beacon chain validators	Done	1137

Block proposers

Issue	Title	Status	PR
1141	Beacon chain block production	Done	1168
1142	Validators shuffling	Done	1185
1143	Beacon chain state transition	Done	1177
1144	Beacon chain trivial fork choice	Done	1156
1145	Beacon chain block import	Done	1156

Attesters with primitive signature aggregation

Issue	Title	Status	PR
1190	Trivial signature aggregation	Done	1210
1191	Beacon attester	Done	1210
1192	Propose blocks with attestations	Done	1219
1193	Verify attestations in blocks	Done	1219
1194	Fork choice rule with attestations	Done	1219

Finality

Issue	Title	Status	PR
1238	Casper FFG on Beacon chain	To Do

Full signature aggregation scheme

Issue	Title	Status	PR
1237	Integrate Milagro impl of BLS signature aggregation	On review	1236