Pramod Viswanath
@viswanathpramod
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Professor at Princeton
Princeton, NJ
Joined January 2024
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I teach blockchains at Princeton university. We are just wrapping up "Elements of DeFi", a very hands-on course (each class is a lecture+lab on ETH Sepolia).
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Thanks to
@sreeramkannan
for teaching the last lecture that summarized the entire storyline: combining all elements of DeFi into a super-organism (Eigenlayer). Kind of like combining basic elements of life (hydrogen, oxygen, carbon) into the sentient, flexible, homo sapiens
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All lecture slides, videos, labs are online at the course website: The lecture by
@sreeramkannan
can be seen at:
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@sandeepnailwal
Thanks
@sandeepnailwal
The key thing about DePIN is P (“physical”) and decentralized trust here is the ability to do “consensus on physical state”. Blockchains run consensus on “digital (and objective) state”. Physical state is both NOT digitally native and is inter-subjective!
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There is huge diversity of DePIN projects (networking, storage, energy, sensors, batteries). Correspondingly the “Physical state” also comes in many forms. At witness chain we focused on creating proofs of the most basic physical states.
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LOCATION is the most basic physical state. Traditional localization is through triangulation. But we need Byzantine resistance. We invented “adversarial trigonometry” (geometry the ancient Greeks would’ve liked) in our proof of location protocol
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INTERNET CONNECTIVITY is next most basic. gives you bandwidth test but we need decentralized solutions. We build cryptography primitives inside classical network telemetry libraries (ping, iperf) in our Proof Bandwidth protocol
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NETWORK SERVICE is third most basic. Your carrier can list your data usage but we need decentralized solutions. We invent trusted two-sided network measurement and integrate into open source 5G wireless stack (Magma) in our Proof of Service protocol.
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Finally
#witnesschain
platform allows community to contribute their own proofs to build the library of physical states. Thus the physical state verification substrate is born. Combine with
#EigenLayer
security and tokenomics we have the first open DePIN collaboration platform
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