IPFS Metadata PoC

Requirements

1. IPFS Node
   • Pre-Built
   • Source
2. Node.js (11+)

/Client

Configure

index.html
line: 81
var local_server = "http://127.0.0.1:5000";

Set the local_server variable to the location of your server for this repo.

/Server

Configure

Copy tmp-env to .env: cp tmp-env .env
Configure .env

PORT='(INT)'
MNEMONIC='(FOR CONTRACT OWNER ACCOUNT {USE DEV WALLETS})'
INFURA_KEY='(INFURA API CODE)'
NFT_CONTRACT_ADDRESS='(CONTRACT ADDRESS)'
OWNER_ADDRESS='(OWNER ACCOUNT PUBLIC ADDRESS)'
NETWORK='(NETWORK {RINKEBY})'
IPFS_GATEWAY='(IPFS GATEWAY {https://ipfs.io/ipfs/ || https://ipfs.io/ipns/<ipns CID>/ || /ipfs/ || /ipns/<IPNS CID>})'
IPFS_LOCAL_STORAGE='(LOCAL IPFS STORAGE LOCATION)'

• Current IPFS_GATEWAY must include a gateway domain
  In the future there should be more support for just plain '/ipfs/' & '/ipns/'
  For now ONLY USE "https://ipfs.io/ipfs/" or local public gateway (ex: https://ipfs.cr0wngh0ul.org/ipns/)

Start

node server

/contract

This contract sample is taken from OpenSea Creatures

Configure

• /contracts/CreatureFactory.sol

  • baseURI: set to IPNS gateway with IPNS CID (ex: "https://ipfs.cr0wngh0ul.org/ipns/QmVc5VEnPedqKJsEozRBAzSm7aWcKcoPNeXwQS1p1W7y3v/")

• /contract/Creature.sol

  • BaseTokenURI: set to IPNS gateway with IPNS CID (ex: "https://ipfs.cr0wngh0ul.org/ipns/QmVc5VEnPedqKJsEozRBAzSm7aWcKcoPNeXwQS1p1W7y3v/")

• When there is better support for IPFS / IPNS these should omit the gateway and only include /ipns/<IPNS CID>

Deploy Contract

export INFURA_KEY="<infura_key>"
export MNEMONIC="<metmask_mnemonic>"
truffle deploy --network rinkeby

Usage

1. Open index.html in your web browser.
2. Fill out the form fields.
3. Submit the form.

TODO:

/server/ipfsNft.js

execShellCommand()

• Catch error and stderr to quit execution and send error to client