The winners of the Main Prize of the hackathon with the supplemented KILT Coins for the web3athon. Dudley Needham, the Developer Relations at BOTLabs GmbH, will submit on behalf of the Main prize winners. A Proof of Concept (POC) for a prover which can serve as a ZK-rollup of a Substrate-based chain. The full proposal can be found here (comment access):

https://docs.google.com/document/d/1nz5GNjTL5inaI5s9djIki7DUp5zyPJV9dEI9K06kJ58/edit?usp=sharing

**How to verify the document integrity**

The current version of the proposal document has been digitally signed with one of the DIDs that BOTLabs GmbH controls. To verify the signature:

1. Download the PDF version of the Google Document linked above.
2. Download the DID signature of the file from IPFS, with CID bafybeigojwlfgz5euq6qwmzdbtreimjj3pt67tcsdq6b2oyd5q6c7xjyem (e.g., ipfs.io).
3. Visit didsign.io, and upload both the PDF file and the downloaded signature. The signature should verify correctly and link to the KILT tx in which the timestamp was generated.
4. To verify the back-link from the DID to the account to which the funds must be sent if the Proposal is accepted, copy the account in the Proposal (4oUW14NsPf1ToUHxJWHd9jgF4y397MAh92VvFJ4J8Z35haPq for quick reference) and paste it in w3n.id. The account must be linked to the same web3name that signed the proposal document.

- Dudley Needham will submit a Proof of Concept for a prover in a hackathon.
- The proposal document can be found in a Google Document.
- The document has been digitally signed by BOTLabs GmbH.
- To verify the signature, download the PDF and the DID signature, and use didsign.io.
- The account to which funds must be sent if the proposal is accepted can be verified using w3n.id.

#227 KILT Coin Prizes for the Web3athon: Risc-Roll