Demo Video https://youtu.be/N9k00dQUIHY

Overview

Minting the username into NFT, make the username on supported chains unique, turn it into a digital asset, and can be used between multiple chains.

How it works

1. Publish a dapp named NameNft DApp on all supported chains, providing the function of minting nft, an nft is a string, such as ‘zhaojie’.
2. When minting nft through NameNft DApp, set ownership and usage rights for nft.
3. The ownership of an nft exists only on one chain, and the right to use can exist on multiple chains at the same time.
4. Users who hold nft ownership on chain A can authorize the username to a certain address on chain B. At this time, nft exists on chain A and chain B at the same time, and there can be multiple usage rights. Authorization on multiple chains.
5. Ownership can be transferred on different chains, but can only exist on one chain.
6. Ownership can revoke the right to use.

Final goal

The nft is minted by a string (username) and can be used on multiple chains, and the nft holder has a unique username on multiple chains.

Why have the right to own and use

If the user name is only minted on multiple chains at the time of registration, due to the problem of time difference, it cannot be guaranteed that the minting will be successful on multiple chains. For example, if two addresses are minted on two chains at the same time, conflicts will occur. After the ownership is introduced and only exists on one chain, when casting, first query whether the user name on other chains exists, which can ensure uniqueness, but at this time the user name can only exist on one chain, and the usability is limited, so it needs to be introduced again The concept of usage rights can guarantee uniqueness and can be used in more places.

Use Cases(assumption)

1. Find the corresponding address by name.
2. Confirm user identity by name when transferring money by address to avoid mistakes. E.g:
   1. The third-party wallet app integrates NameNft DApp, and the address of the other party can be found by the name when transferring money.
   2. The third-party chat app integrates NameNft DApp and finds a user through @xxxx.
   3. The third-party wallet app integrates NameNft DApp. When filling in the address, it prompts the name corresponding to the address, which is used to confirm the user's identity and avoid errors.

Run the project

The environment is the same as axelar-local-gmp-examples

sudo npm i -g n
sudo n v16.15.0

Clone this repo:

git clone https://github.com/zhaojio/NameNft
cd name Nft
npm install

Check your own private key.

cp .env .example.env

Run local test environment

node scripts/createLocal

Edit and publish contracts

npm run build
node scripts/deploy contracts/nft-name local

Run Local Test

node scripts/test contracts/nft-name local

Copy the front-end resource file(*important)

chmod +x copy.sh
./copy.sh

Run the front-end page with npm http-server

npm install -g http-server
cd frontend/release
http-server

Open the page in a browser

http://127.0.0.1:8080/

Test account

0x1AE978F987e9d4CCC32850D995C62F3f6e575EfD
25121fb9a63992d9d0187eafa646c5d540118c2bd84e2db3c6774b16f0d9d3fe

0x4e9bfBE6925D85c888A6f23E546d30753B289DE0
f27110e261b5e4e7a15c707874ffba70919eef619b895b56a0056e1e08c23b86