[Cryptography] Cuckoo Cycles: a new memory-hard proof-of-work system

[Zooko O'Whielacronx]

Hello John Tromp!

That is neat! The paper could use a related work section, for example
Litecoin uses scrypt in the attempt to make it harder to implement in
ASIC:

https://litecoin.info/Scrypt

The current Password Hashing Contest (disclosure: I am on the panel)
may be relevant to your interests:

https://password-hashing.net/

Regards,

Zooko