Welcome to the second installment of eth2 quick update.
- Spec release of
v0.9.0 -- Tonkatsuto ensure Phase 0 development can continue unimpeded.
- Work continues in ironing out the details of the modified Phase 1 proposal.
- Quiet client development focused on
eth1 -> eth2infrastructure, general hardening for production, and optimizations.
As promised on the latest eth2 call, we pushed things forward to release
v0.9.0 release – Tonkatsu. This release is largely simplifying with respect to Phase 0. The goal here is to remove any portions of Phase 0 that are opinionated about Phase 1 to ensure Phase 0 development can continue unimpeded regardless of the work-in-progress modified sharding proposal.
Read the release notes for more info.
Ongoing Phase 1 Redesign
As mentioned in the last eth2 quick update, we are almost certainly taking a new and simpler direction for Phase 1. The new sharding proposal facilitates “crosslinks” for all shards at each slot. This drastically simplifies communication between shards and will result in a much better and simpler developer/user experience come Phase 2.
Previous cross-shard communication (approximate)
New shard design proposal
To support this new proposal, the total shard count to start must be reduced from 1024 to the new estimate of 64, with the intention to scale up the number of shards over time (~10 years) as standard resources available to consumer laptops increases. The following are the primary reasons for the requisite reduction in total shards:
- Each shard induces an attestation load on the network and beacon chain at each slot rather than at each epoch
- Each committee must be of a minimum safe number of validators. If there are too many committees per epoch due to high shard count, then there couldn’t possibly be enough 32-ETH validators to safely allocate enough to each committee
[EDIT: the following paragraph was added after initial release of the blog post in response to some…