aalee888/videocoin-nft-devnet

Videcoin NFT Development

Video NFT Devnet

Quick start

checkout the repo, get the submodules and run the docker-compose.

git submodule update --init --recursive

Update the docker-compose to lattest vetsion(v1.29.1)
https://docs.docker.com/compose/install/

Get your textilehub credentials and update marketplace_env.list
https://docs.textile.io/hub/apis/

MARKETPLACE_TEXTILE_AUTH_KEY=""
MARKETPLACE_TEXTILE_AUTH_SECRET=""
MARKETPLACE_TEXTILE_THREAD_ID=""
MARKETPLACE_TEXTILE_BUCKET_ROOT_KEY=""

Run the Video NFT Devnet

docker-compose up

Open the browser and launch the aft-app.

http://localhost:8080/

Use the follwing test private-key in Metamask with "Localhost 8545" Netowork

Private Key: 4f3edf983ac636a65a842ce7c78d9aa706d3b113bce9c46f30d7d21715b23b1d
Account: 0x90F8bf6A479f320ead074411a4B0e7944Ea8c9C1

Open Lightweight Block Explorer

http://localhost:8090/

Bringdown the Video NFT Devnet

docker-compose down -v

Note: If you are going run the video-nft-devnetwork again (docker-compose up), flush your browser cache to remove the stale authentication of nft-app from the previous session.

Check integrity and DRM

• Retrieve the drm data from the token URI
• Use the marketplace docker container to decrypt the drm data. You need to supply the private key corresponding to the public key used for creating DRM data.
• This step outputs the content encryption key.
• Use the content encryption key to decode the encrypted video asset using ffmpeg.

Example: Decrypt DRM data and retrieve content encryption key.

docker run --rm -it -e "PRIV_KEY=<Your_Priv_Key>" -e "DRM_KEY=<DRM_DATA_FROM_TOKEN_URI>" registry.videocoin.net/cloud/marketplace:8c7af9248ac36e1e698e143d47782ddf2e4b2d7d /mpek

Outputs content deryption key on succesful decryption of DRM.

Decrypt the content using the encryption key obtained in the previous step.

ffmpeg  -decryption_key <decryption key> -i encrypted_firstfilm.mp4 -c:v copy -c:a copy test_dec.mp4

VideoNFT Marketplace Components

Docker-compose based devnet that includes the following services:

• NFT-APP(Video NFT Frontend)
• Marketplace(API Backend)
• Postgres(Database for userinfo)
• Ganache(Blockchain Devnet)
• Explorer(Lightweight Block Explorer)
• Token Contracts(Contract deployer)

The above components are configurable. The Video NFT GUI installer obtains the configuration parameters and configures the components. The configuration options of each component are listed below for reference.

nft-app

VideoCoin NFT Frontend

Environment Variables

REACT_APP_BASE_URL=
REACT_APP_NETWORKS=
REACT_APP_TOKEN_ADDRESS=

Marketplace

This service provides the backend API for the VideoCoin NFT.

Testing the service docker image:

Obtain TextileHub credentials

https://docs.textile.io/hub/apis/

Configure Marketplace

Example environment variables file (env.list)

MARKETPLACE_TEXTILE_AUTH_KEY=
MARKETPLACE_TEXTILE_AUTH_SECRET=
MARKETPLACE_TEXTILE_THREAD_ID=
MARKETPLACE_TEXTILE_BUCKET_ROOT_KEY=
MARKETPLACE_BLOCKCHAIN_URL=
MARKETPLACE_ERC1155_CONTRACT_ADDRESS=
MARKETPLACE_ERC1155_CONTRACT_KEY=
MARKETPLACE_ERC1155_CONTRACT_KEY_PASS=

Ganache

Test network. It can removed by providing Web3 provider for Mainnet or any testnet to the marketplace.

Note: We launch ganache with deterministic address option where the same test account addresses are created for every session. The value for the environment variable MARKETPLACE_ERC1155_CONTRACT_ADDRESS supplied for marketplace is also dertermenistic.

Token Contracts

Environment variables:

VID_PRIV_KEY=""
VID_RPC=http://localhost:8545
ERC1155_TOKEN_URI_TEMPLATE="https://hub.textile.io/ipns/<MARKETPLACE_TEXTILE_BUCKET_ROOT_KEY>/1.json"

Explorer

An open source Lightweight Block Explorer It can show the status of blockchain and can be replaced with any Ethereum blockchain. It is useful if a local test chain such as Ganache is used.

https://github.com/Alethio/ethereum-lite-explorer