- FourFire proposed designing a cryptocurrency whose “mining” infrastructure would be intrinsically useful—specifically, rewarding nodes that provably deliver bandwidth to new users in a mesh network—arguing that Bitcoin’s energy use scales without adding real-world utility.  
- kanzure replied that “there is no way to prove bandwidth delivery in adversarial environments,” citing the trivial attack of placing 64 Raspberry Pis on a local switch to fake traffic.  
- FourFire countered that the problem might still be solvable and asked for a comprehensive list of “proof-of-___” schemes; kanzure declined, noting most are “stupid,” but pointed to his curated bibliography at http://diyhpl.us/~bryan/papers2/bitcoin/.  
- The discussion surfaced known consensus mechanisms (Proof-of-Work, Proof-of-Stake, Proof-of-RAM, Proof-of-Disk-Space) and explicitly asked whether a practical Proof-of-Bandwidth could exist.  
- kanzure floated a separate transhumanist research idea: selective breeding or genetic engineering of animals for extreme ischemia resistance, aiming to extend survivability of heart, lung, and brain death for future organ preservation or cryonics applications.