Re: Who Watches the Watchmen? A Review of Subjective Approaches for Sybil-resistance in Proof of Personhood Protocols

I think this was the important insight of the paper here.  And I wonder if
it can be solved with verifiable credentials?

"If blockchains are to become a significant public infrastructure,
particularly in the space of civic engagement, then Proof of Work's
“one-CPU-one-vote” or Proof of Stake's “one-dollar-one-vote” systems will
not suffice: in order to enable democratic governance, protocols that
signal unique human identities to enable "one-person-one-vote" systems must
be created."

On Wed, 9 Sep 2020 at 12:50, Melvin Carvalho <>

> PDF is here:
> Keywords: decentralized identity, Sybil-protection, crypto-governance
> Abstract.
> Most self-sovereign identity systems consist of strictly objective claims,
> cryptographically signed by trusted third party attestors. Lacking
> protocols in place to account for subjectivity, these systems do not form
> new sources of legitimacy that can address the central question concerning
> identity authentication: "Who verifies the verifier?". Instead, the
> legitimacy of claims is derived from traditional centralized institutions
> such as national ID issuers and KYC providers. Thisarchitecture has been
> employed, in part, to safeguard protocols from a vulnerability previously
> thought to be impossible to address in peer-to-peer systems: the Sybil
> attack, which refers to the abuse of an online system by creating many
> illegitimate virtual personas. Inspired by the progress in cryptocurrencies
> and blockchain technology, there has recently been a surge in networked
> protocols that make use of subjective inputs such as voting, vouching,and
> interpreting, to arrive at a decentralized and sybil-resistant consensus
> for identity. In this review, we will outline the approaches of these new
> and natively digital sources of authentication - their attributes,
> methodologies strengths, and weaknesses - and sketch out possible
> directions for future developments.
> On Wed, 9 Sep 2020 at 03:21, Wayne Chang <> wrote:
>> link:
>> discussion from strangers on the internet:

Received on Wednesday, 9 September 2020 10:55:23 UTC