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clientdiversity-org
This is the source code for https://clientdiversity.org, a resource site to assist client diversity efforts.
For those interested in the specific risks of various L2s as they stand, L2Beat has the best overview: https://l2beat.com/?view=risk
While the various L2s are all pretty bleeding edge, the current state/alternative [1] is that a majority of the TVL is being bridged to alternate L1s, where the bridges are also extreme weaknesses [2]. There was the recent $320M Wormhole hack [3], the last record white-hat payout ($2M bounty on $850M at risk with the Polygon Bridge) [4][5], and $2.2B sits on Avalanche's Bridge [6] which is an EOA that is secured by literally 4 SGX machines. [7]
[1] https://defillama.com/chains
[2] https://old.reddit.com/r/ethereum/comments/rwojtk/ama_we_are...
[3] https://wormholecrypto.medium.com/wormhole-incident-report-0...
[4] https://medium.com/immunefi/polygon-double-spend-bug-fix-pos...
[5] https://gerhard-wagner.medium.com/double-spending-bug-in-pol...
[6] https://app.uniwhales.io/avalanche/bridge-tracker
[7] https://medium.com/avalancheavax/avalanche-bridge-secure-cro...
execution node (ETH 1.0) diversity is important, but actually more important moving forward is the consensus (beacon chain, fka Ethereum 2.0) diversity. The crawled data here shows that Prysm has almost 2/3s of that: https://migalabs.es/crawler/dashboard
For a good recent/up-to-date summary of the differences, why it matters: https://ethereum.org/ms/developers/docs/nodes-and-clients/cl...
And here's a good reference site as well promoting better client diversity before the merge: https://clientdiversity.org/