"The sender
could store redundant copies of the encrypted transaction data with
multiple trust-
minimized middlemen, for the recipient to download when they come back
online."

sounds like a nostr event sent to a half dozen relays


On Fri, May 12, 2023, 9:15 AM Robin Linus via bitcoin-dev <
bitcoin-dev@lists.linuxfoundation.org> wrote:

> Hi all,
>
> Today we are publishing a summary of our research on "ZeroSync:
> Introducing Validity Proofs to Bitcoin".
>
>
> Here's the preface:
>
> *We introduce ZeroSync, the first-ever proof system addressing Bitcoin’s
> scalability challenges with Succinct Non-Interactive Argument of Knowledge
> (SNARKs). ZeroSync compresses the entire Bitcoin blockchain into a compact
> proof of validity, enabling instant verification and unlocking various
> innovative applications. We discuss our prototype implementation of a chain
> state proof, utilizing the Cairo language, Utreexo, and recursive STARKs.
> Our work enables diverse applications, including quick bootstrapping of
> full nodes, trustless light clients, enhanced Lightning Network privacy,
> and secure cross-chain bridges. Chain state proofs require no consensus
> changes, which is crucial as forks in Bitcoin are challenging to implement
> and achieve consensus for. Despite the existing bottleneck of prover
> performance, we present a range of optimization strategies and demonstrate
> the practicality of generating a complete chain state proof. *
> *Finally, we introduce zkCoins, a client-side validation protocol combined
> with zeroknowledge SNARKs, drastically improving privacy and throughput of
> token transactions. In combination with future Bitcoin features, such as
> Simplicity, zkCoins also enables private and more scalable BTC
> transactions. *
> *The groundbreaking compression capabilities of SNARKs initiated a
> paradigm shift in cryptocurrency design, and ZeroSync is pioneering their
> application to Bitcoin.*
>
>
> You can find the full paper here: https://zerosync.org/zerosync.pdf
> Happy to receive any comments and answer any questions the bitcoin dev
> community may have about the paper!
>
>
>
> Best regards,
> Robin Linus
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>