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Plasma Winter - an account model Plasma with with zkSNARK proved state transitions. Started on ETH Singapore

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Plasma Winter: governed by SNARKs

This work is a demonstration of applying zk-SNARKs to solving blockchain scalability as a Layer 2 Plasma-like solution.

The code is meant to serve as a Proof-of-concept only and is not suitable for use in production apps. Work on the production-grade implementation is currently in progress. If you want to contribute, please contact the authors:

Spec

https://hackmd.io/cY-VP7SDTUGgPOzDiEU3TQ

How to run

  • Generate a proving key
   cargo run --release --bin read_write_keys.rs

It will generate a VerificationKeys.sol and proving key pk.key in a root folder.

  • Copy VerificationKeys.sol into the ./contracts/contracts/ with replacement

  • Replace a EMPTY_TREE_ROOT with value 0x09d809ed651bf1f19906bd7c170e1736176d3fbb2053e702dbbc2a8eed3e929f. It's a root hash of demo server with pregenerated 1000 accounts

  • Run the migration by making a proper adjustments in deploy_example.sh file

  • Run server:

    • Change start_demo_example.sh by inserting proper URLs, addresses and keys
    • Run the script
  • Server has 1000 accounts pregenerated and you can send using

   POST http://127.0.0.1:8080/send

{
   "from": 0,
   "to": 1,
   "amount": 1000
}
  • Valid response is
{
   "accepted": true
}
  • Batch size is 32 transactions, so you need to send this number of txes to start block commitment and proof generation process

  • UI lives here https://github.com/gluk64/gluk64.github.io, you need to change

   const APIserver = 'https://1be52733.ngrok.io/send'

To something else

License

Plasma Winter is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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