Resources and documentation related to the planned Ethereum KZG Ceremony.
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The KZG Ceremony is a coordinated public ritual which will provide a cryptographic foundation for Ethereum scaling initiatives. From the specs repo:
The ceremony takes place between participants and the sequencer. Participants are the entities that contribute their secret randomness to the final output 𝜏 s. The role of the sequencer is to act as the common point of interaction for all participants as well as verifying participants' contribution as the ceremony progresses.
The ceremony is designed to have the following characteristics:
wide ecosystem participation
browser accessible
a meaningful narrative in a simple interface
easy to audit transcript
The best place to follow along is the KZG Ceremony channel in the Ethereum R&D Discord or the bridged telegram channel - DM one of the contributors to be added to either.
There are a number of independent implementations interested Ceremony participants can try to run locally, will have a variety of different features. (no guarantees on the quality or completeness!)
Features: transcript verification, using additional external sources of entropy, eg. drand network, an arbitrary URL provided by the user. Note: double signing not supported due to lack of hash-to-curve in gnark.
@ethereum
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The KZG Ceremony is a coordinated public ritual which will provide a cryptographic foundation for Ethereum scaling initiatives. From the specs repo:
The ceremony is designed to have the following characteristics:
wide ecosystem participation
browser accessible
a meaningful narrative in a simple interface
easy to audit transcript
The best place to follow along is the KZG Ceremony channel in the Ethereum R&D Discord or the bridged telegram channel - DM one of the contributors to be added to either.
Resources
KZG Ceremony FAQ
How do trusted setups work?
EIP-4844
Proto-Danksharding FAQ
KZG polynomial commitments
KZG Ceremony Timeline
Spec Repo
Frontend Repo
Audits
SECBIT Spec + Implementation Audit - Aug 2022
Sigma Prime Sequencer Audit - Jan 2023
Client Implementations
There are a number of independent implementations interested Ceremony participants can try to run locally, will have a variety of different features. (no guarantees on the quality or completeness!)
readme
CLI Interfaces
Chotto
blst (jblst)
Java
Apache 2.0
Stefan Bratanov (@StefanBratanov)
go-kzg-ceremony-client
gnark-crypto
Go
MIT
Ignacio Hagopian (@jsign)
Features: transcript verification, using additional external sources of entropy, eg. drand network, an arbitrary URL provided by the user. Note: double signing not supported due to lack of hash-to-curve in gnark.
eth-KZG-ceremony-alt
kilic
Go
GPL-3.0
Arnaucube (@arnaucube)
Towers of Pau
blst
Go
MIT
Daniel Knopnik (@dknopik), Marius van der Widjen (@MariusVanDerWijden)
Linux only, no signatures.
Browser Interfaces
ZKParty Frontend
Arkworks
Several
latest.kzgceremony.eth
trusted-setup-frontend
References the latest version of the interface, which departs from the audited version in minor ways
ZKParty Frontend (Audit Commit)
Arkworks
Several
[1] audit.kzgceremony.eth
trusted-setup-frontend
The exact interface which Sigma Prime audited in November 2022. May have minor bugs or differences from the latest version above. docker instructions
Doge KZG
gnark
MIT
Andrew Davis (@Savid)
[2]
dogekzg
🐶
audit: QmevfvaP3nR5iMncWKa55B2f5mUgTAw9oDjFovD3XNrJTV
doge: QmRs83zAU1hEnPHeeSKBUa58kLiWiwkjG3rJCmB8ViTcSU
BLS Libraries
blst
C & assembly
Apache 2.0
Audit Report, [WIP] Formal Verification
Arkworks
Rust
Apache 2.0, MIT
gnark-crypto
Go & assembly
Apache 2.0
Audit Report
kilic
Go
Apache 2.0
Herumi BLS
C++ & assembly
modified BSD
Technical Assessment
py_ecc
Python
MIT
Media
Ethereum’s KZG Ceremony
Bankless
David Hoffman, Trent Van Epps, Carl Beekhuizen
Jan 2023
Peep an EIP - KZG Ceremony
EthCatHerders
Pooja Ranjan, Carl Beekhuizen
Jan 2023
Ethereum Foundation — EIP-4844 & KZG Ceremony
Epicenter
Friederike Ernst, Trent Van Epps, Carl Beekhuizen
Jan 2023
Building the KZG Ceremony
PSE Learn and Share
Nico Serrano, Geoff Lamperd
Dec 2022
The KZG Ceremony - or How I Learnt to Stop Worrying and Love Trusted Setups
Devcon
Carl Beekhuizen
Oct 2022
Public Calls
| Call = |Link | Date | | -: | -: | -: | |1 | Agenda/Recording |June 9 2022 | |2 | Agenda/Recording | June 23 2022 | |3 | Agenda/Recording |July 7 2022 | |4 | Agenda/Recording | July 21 2022 | |5 | Agenda/Recording | Aug 4 2022 | |6 | Agenda/Recording |Aug 18 2022 | |7 | Agenda/Recording |Sept 1 2022 | |8 | Agenda/Recording | Sept 15 2022 | |9 | Agenda/Recording | Sept 29 2022 |