101 Create your first Substrate blockchain

What is Substrate?

Install Rust and the Rust toolchain

Prepare a Substrate node using the node template

Install the front-end template

Start the local Substrate node

Start the front-end template

Transfer funds from one account to another

Stop the local node

Substrate is an open supply, modular, and extensible framework for constructing blockchains.

Substrate has been designed from the bottom as much as be versatile and permit innovators to design and construct a blockchain community that meets their wants. It offers all of the core parts it’s worthwhile to construct a personalized blockchain node.

To get you began, the Substrate Developer Hub offers an out-of-the-box working Substrate-based node template. With out making any adjustments, you need to use this node template to create a working blockchain community with some predefined person accounts and funds.

To put in and configure Rust manually:

  1. Set up rustup by working the next command:
curl https://sh.rustup.rs -sSf | sh
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  1. Configure your present shell to reload your PATH surroundings variable in order that it contains the Cargo bin listing by working the next command:
supply ~/.cargo/env
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  1. Configure the Rust toolchain to default to the newest secure model by working the next instructions:
rustup default secure
rustup replace
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  1. Add the nightly launch and the nightly WebAssembly (wasm) targets by working the next instructions:
rustup replace nightly
rustup goal add wasm32-unknown-unknown --toolchain nightly
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  1. Confirm your set up by working the next instructions:
rustc --version
rustup present
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The earlier steps walked you thru the set up and configuration of Rust and the Rust toolchain in order that you would see the total course of for your self.

The Substrate node template offers a working improvement surroundings as a way to begin constructing on Substrate straight away.

To compile the Substrate node template:

  1. Clone the node template repository utilizing the model newest department by working the next command:
git clone https://github.com/substrate-developer-hub/substrate-node-template
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  1. Change to the basis of the node template listing by working the next command:
cd substrate-node-template
git checkout newest
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  1. Compile the node template by working the next command:
cargo construct --release
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It is best to at all times use the –release flag to construct optimized artifacts.

  1. Clone the front-end template repository by working the next command:
git clone https://github.com/substrate-developer-hub/substrate-front-end-template
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  1. Change to the basis of the front-end template listing by working the next command:
cd substrate-front-end-template
git checkout newest
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  1. Set up the dependencies for the front-end template by working the next command:
yarn set up
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  1. Change to the basis listing the place you compiled the Substrate node template.
    Begin the node in improvement mode by working the next command:
./goal/launch/node-template --dev
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  1. Confirm your node is up and working efficiently by reviewing the output displayed within the terminal.

The terminal ought to show output just like this:

If the quantity after finalized is growing, your blockchain is producing new blocks and reaching consensus concerning the state they describe.

We’ll look into the main points of what is reported within the log output in a later tutorial. For now, it is solely vital to know that your node is working and producing blocks.

  1. Maintain the terminal that shows the node output open to proceed.

The Substrate front-end template consists of person interface parts to allow you to work together with the Substrate node and carry out a number of frequent duties.

To make use of the front-end template:

  1. Open a brand new terminal shell in your laptop, change to the basis listing the place you put in the front-end template.

  2. Begin the Entrance-end template by working the next command:

yarn begin
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  1. Open http://localhost:8000 in a browser to view the front-end template.

The highest part has an Account choice record for choosing the account to work with whenever you need to carry out on-chain operations. The highest part of the template additionally shows details about the chain to which you are linked.
账号

Now that you’ve got a blockchain node working in your native laptop and you’ve got a front-end template out there for performing on-chain operations, you’re able to discover other ways to work together with the blockchain.

By default, the front-end template contains a number of parts that help you strive totally different frequent duties. For this tutorial, you possibly can carry out a easy switch operation that strikes funds from one account to a different.

To switch funds to an account:
Transfer

After a profitable switch, you possibly can proceed to discover the front-end template parts or cease the native Substrate node. Since you specified the –dev possibility whenever you began the node, stopping the native node stops the blockchain and purges all persistent block information as a way to begin with a clear state subsequent time you begin the node.

To cease the native Substrate node:

  1. Return to the terminal shell the place the node output is displayed.

  2. Press Management-c to terminate the working course of.

  3. Confirm your terminal returns to the terminal immediate within the substrate-node-template listing.

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