123# NFT Parachain45## Application Development67If you are building an application that operates NFT tokens, use [this document](doc/application_development.md).89## Building1011Building NFT chain requires special versions of Rust and toolchain. We don't use the most recent versions of everything so that we can keep the builds stable.12131. Install Rust:1415```bash16curl https://sh.rustup.rs -sSf | sh17sudo apt-get install libssl-dev pkg-config libclang-dev clang18```19202. Remove all installed toolchains with `rustup toolchain list` and `rustup toolchain uninstall <toolchain>`.21223. Install Rust Toolchain 1.44.0:2324```bash25rustup install 1.44.026```27284. Make it default (actual toochain version may be different, so do a `rustup toolchain list` first)29```bash30rustup toolchain list31rustup default 1.44.0-x86_64-unknown-linux-gnu32```33345. Install nightly toolchain and add wasm target for it:3536```bash37rustup toolchain install nightly-2020-05-0138rustup target add wasm32-unknown-unknown --toolchain nightly-2020-05-01-x86_64-unknown-linux-gnu39```40416. Build:42```bash43cargo build44```4546## Run4748You can start a development chain with:4950```bash51cargo run -- --dev52```5354Detailed logs may be shown by running the node with the following environment variables set: `RUST_LOG=debug RUST_BACKTRACE=1 cargo run -- --dev`.5556If you want to see the multi-node consensus algorithm in action locally, then you can create a local testnet with two validator nodes for Alice and Bob, who are the initial authorities of the genesis chain that have been endowed with testnet units. Give each node a name and expose them so they are listed on the Polkadot [telemetry site](https://telemetry.polkadot.io/#/Local%20Testnet). You'll need two terminal windows open.5758We'll start Alice's substrate node first on default TCP port 30333 with her chain database stored locally at `/tmp/alice`. The bootnode ID of her node is `QmQZ8TjTqeDj3ciwr93EJ95hxfDsb9pEYDizUAbWpigtQN`, which is generated from the `--node-key` value that we specify below:5960```bash61cargo run -- \62 --base-path /tmp/alice \63 --chain=local \64 --alice \65 --node-key 0000000000000000000000000000000000000000000000000000000000000001 \66 --telemetry-url ws://telemetry.polkadot.io:1024 \67 --validator68```6970In the second terminal, we'll start Bob's substrate node on a different TCP port of 30334, and with his chain database stored locally at `/tmp/bob`. We'll specify a value for the `--bootnodes` option that will connect his node to Alice's bootnode ID on TCP port 30333:7172```bash73cargo run -- \74 --base-path /tmp/bob \75 --bootnodes /ip4/127.0.0.1/tcp/30333/p2p/QmQZ8TjTqeDj3ciwr93EJ95hxfDsb9pEYDizUAbWpigtQN \76 --chain=local \77 --bob \78 --port 30334 \79 --telemetry-url ws://telemetry.polkadot.io:1024 \80 --validator81```8283Additional CLI usage options are available and may be shown by running `cargo run -- --help`.