DEPRECATED

My view on Data Availability Sampling has changed, exploring UDP (discv5 based) instead of TCP (gossipsub based) sampling looks more promising.

Eth2 Data Availability Sampling

This repository is a test plan to import into Testground. It tests the viability of various networking ideas for Phase 1 of Eth2.

DAS experiment

Background:

• Original write-up of Vitalik with different approaches
• Expansion on approach 2 by protolambda, using gossip subnets

The idea is to implement a proof of concept in Go, and run it on Testground with different parameters. Work in progress, highly experimental

DAS spec

A draft of the phase 1 specification can be found in the ./spec folder. This includes:

• How sampling is organized
• How validators run DAS
• How to deal with points of data
• The network spec for shards and DAS

The eth2node package

A mock Eth2 node with just the Phase 1 DAS functionality (sampling, networking, propagation, validation, processing), and instrumentation for gossip tests.

Misc. configurables

Not part of the DAS spec, but for testing purposes:

Name	Planned Value	Unit	Description
PEER_COUNT_LO	120	peers	How many peers for low-water
PEER_COUNT_HI	200	peers	How many peers to maintain for hi-water
SHARD_COUNT	64	shards	Number of shards
SECONDS_PER_SLOT	12	seconds	Number of seconds in each slot
VALIDATOR_COUNT	150000	validators	Number of active validators

License

MIT, see LICENSE file.