Hello!

Henry and I have written up a provisional draft design for a social bridge distribution scheme, modelled after rBridge, which we're calling Hyphae. For those further interested, here is a draft PDF. [0] Included within is:

- A technical history, with primary sources, of censorship of the Tor network, as well as remediations for those censorship attempts;

- A description of the bridge distribution problem, including orthogonal problems and solutions, and prior proposals specific to the bridge distribution;

- A description of an algebraic-MAC attribute-based credential scheme, requisite non-interactive zero-knowledge proofs, and sub-credentials and tokens, which we use to build our bridge distribution protocol;

- A centralised, anonymous micropayments scheme, which we hope is of interest to other projects (such as Brave);

- A description of our Hyphae protocol;

- An high-level, cryptographic and protocol design comparison to the rBridge protocol; and

- Draft notes on our implementation.

Please note that this is a provisional draft paper, containing the design but not yet containing results specific to our implementation. We expect some things to change in minor ways during further refinement and implementation. That said, we welcome all feedback and appreciate review.

[0]: https://patternsinthevoid.net/hyphae/hyphae.pdf

Best regards,