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cidSign

Sign CIDs on Ethereum Blockchain and verify address using DNS

cidSign

Created At

HackFS 2021

Project Description

CidSign enables easy signing of CIDs using Ethereum addresses and links the signer to a domain name.

The frontend is called WUTD - who uploaded that document and demonstrates file uploading, checking domain name linked signers and signing a document.

This project has an API that resolves address to linked domain names. Relevant addresses posted in TXT records on the domain service.

Example TXT record: "v=blockAddress1 type=eth address=0x97EC59751B138386B7eB98d2d8CE9BF6FfD053f9"

Chrome extension that demonstrates checking a webpage for Ethereum addresses and checking for linked domain names.

How it's Made

Api: Python + Django + Django REST Framework

DNS configuration TXT files, Frontend: MetaMask, web3.storage, node, webpack, Contract: solidity. Sponsor tech used was web3.storage which was used for saving files, checking their status and using the unique cid as the component to sign.

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