Initial commit

.devcontainer/devcontainer.json

+{
+  "name": "Substrate Node template",
+  "context": "..",
+  "settings": {
+    "terminal.integrated.shell.linux": "/bin/bash",
+    "lldb.executable": "/usr/bin/lldb"
+  },
+  "extensions": [
+    "rust-lang.rust",
+    "bungcip.better-toml",
+    "vadimcn.vscode-lldb"
+  ],
+  "forwardPorts": [
+    3000,
+    9944
+  ],
+  "preCreateCommand": ["cargo build", "cargo check"],
+  "postStartCommand": "./target/debug/node-template --dev --ws-external",
+  "menuActions": [
+    {"id": "polkadotjs",
+     "label": "Open PolkadotJS Apps",
+     "type": "external-preview",
+     "args": ["https://polkadot.js.org/apps/?rpc=wss%3A%2F%2F/$HOST/wss"]}
+  ]
+}

.editorconfig

+root = true
+[*.rs]
+indent_style=tab
+indent_size=tab
+tab_width=4
+end_of_line=lf
+charset=utf-8
+trim_trailing_whitespace=true
+max_line_length=100
+insert_final_newline=true
+
+[*.yml]
+indent_style=space
+indent_size=2
+tab_width=8
+end_of_line=lf
+
+[*.sh]
+indent_style=space
+indent_size=2
+tab_width=8
+end_of_line=lf

.github/ISSUE_TEMPLATE/ask-a-question.md

+---
+name: Ask a Question
+about: Ask a question about this template.
+title: ""
+labels: question
+assignees: ""
+---
+
+**Question**
+
+_Please include information such as the following: is your question to clarify an existing resource
+or are you asking about something new? what are you trying to accomplish? where have you looked for
+answers?_

.github/ISSUE_TEMPLATE/report-a-bug.md

+---
+name: Report a Bug
+about: Report a problem with this template.
+title: ""
+labels: bug
+assignees: ""
+---
+
+**Description**
+
+_Tell us what happened. In particular, be specific about any changes you made to this template.
+Ideally, provide a link to your project's GitHub repository. Please note that we are not able to
+support all conceivable changes to this template project, but the more information you are able to
+provide the more equipped we will be to help._
+
+**Steps to Reproduce**
+
+_Replace the example steps below with actual steps to reproduce the bug you're reporting._
+
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected vs. Actual Behavior**
+
+_What did you expect to happen after you followed the steps you described in the last section? What
+actually happened?_
+
+**Environment**
+
+_Describe the environment in which you encountered this bug. Use the list below as a starting point
+and add additional information if you think it's relevant._
+
+- Operating system:
+- Template version/tag:
+- Rust version (run `rustup show`):
+
+**Logs, Errors or Screenshots**
+
+_Please provide the text of any logs or errors that you experienced; if
+applicable, provide screenshots to help illustrate the problem._
+
+**Additional Information**
+
+_Please add any other details that you think may help us solve your problem._

.github/ISSUE_TEMPLATE/suggest-a-feature.md

+---
+name: Suggest a Feature
+about: Suggest a new feature or an improvement to an existing feature for this template.
+title: ""
+labels: enhancement
+assignees: ""
+---
+
+**Motivation**
+
+_Describe the need or frustration that motivated you to make this suggestion. Please note that the
+goal of this project is to provide a general-purpose template project, so please take care when
+suggesting features that may be specific to a particular use case._
+
+**Suggested Solution**
+
+_Describe your suggested solution to the need or frustration that you are experiencing._
+
+**Alternatives**
+
+_Describe any alternative solutions or features you considered and why you believe your suggested
+solution is preferable._
+
+**Additional Information**
+
+_Provide any additional information that you believe may help us evaluate your suggestion._

.github/workflows/build-push-template.yml

+name: Build and Push template
+
+on:
+  push:
+    branches:
+    - master
+
+jobs:
+  build-push-template:
+    if: ${{ github.repository == 'substrate-developer-hub/substrate-node-template' }}
+    runs-on: ubuntu-18.04
+    steps:
+    - name: Trigger playground inclusion
+      uses: peter-evans/repository-dispatch@v1
+      with:
+        token: ${{ secrets.REPO_ACCESS_TOKEN }}
+        repository: paritytech/substrate-playground
+        event-type: template-updated
+        client-payload: '{"id": "node-template"}'

.github/workflows/check.yml

+name: Check Set-Up & Build
+
+# Controls when the action will run. 
+on:
+  # Triggers the workflow on push or pull request events but only for the master branch
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  check:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-20.04
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+
+      - name: Set-Up
+        run: sudo apt install -y cmake pkg-config libssl-dev git build-essential clang libclang-dev curl
+
+      - name: Install Rustup
+        run: |
+          curl https://sh.rustup.rs -sSf | sh -s -- -y
+          source ~/.cargo/env
+          rustup default stable
+          rustup update nightly
+          rustup update stable
+          rustup target add wasm32-unknown-unknown --toolchain nightly
+
+      - name: Check Build
+        run: |
+          SKIP_WASM_BUILD=1 cargo check --release

.gitignore

+# Generated by Cargo
+# will have compiled files and executables
+**/target/
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+.DS_Store
+
+# The cache for docker container dependency
+.cargo
+
+# The cache for chain data in container
+.local
\ No newline at end of file

.vscode/tasks.json

+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Run ",
+            "type": "shell",
+            "command": "cargo",
+            "args": ["run", "--release", "--", "--dev"],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "presentation": {
+                "reveal": "always",
+                "panel": "new"
+            },
+            "problemMatcher": [
+            {
+                "owner": "rust",
+                "fileLocation": ["relative", "${workspaceRoot}"],
+                "pattern": {
+                "regexp": "^(.*):(\\d+):(\\d+):\\s+(\\d+):(\\d+)\\s+(warning|error):\\s+(.*)$",
+                "file": 1,
+                "line": 2,
+                "column": 3,
+                "endLine": 4,
+                "endColumn": 5,
+                "severity": 6,
+                "message": 7
+                }
+            }
+            ]
+        }
+    ]
+}
\ No newline at end of file

Cargo.toml

+[profile.release]
+panic = 'unwind'
+
+[workspace]
+members = [
+    'node',
+    'pallets/*',
+    'runtime',
+]

LICENSE

+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>

README.md

+# Substrate Node Template
+
+A fresh FRAME-based [Substrate](https://www.substrate.io/) node, ready for hacking :rocket:
+
+## Getting Started
+
+Follow these steps to get started with the Node Template :hammer_and_wrench:
+
+### Rust Setup
+
+First, complete the [basic Rust setup instructions](./doc/rust-setup.md).
+
+### Run
+
+Use Rust's native `cargo` command to build and launch the template node:
+
+```sh
+cargo run --release -- --dev --tmp
+```
+
+### Build
+
+The `cargo run` command will perform an initial build. Use the following command to build the node
+without launching it:
+
+```sh
+cargo build --release
+```
+
+### Embedded Docs
+
+Once the project has been built, the following command can be used to explore all parameters and
+subcommands:
+
+```sh
+./target/release/node-template -h
+```
+
+## Run
+
+The provided `cargo run` command will launch a temporary node and its state will be discarded after
+you terminate the process. After the project has been built, there are other ways to launch the
+node.
+
+### Single-Node Development Chain
+
+This command will start the single-node development chain with persistent state:
+
+```bash
+./target/release/node-template --dev
+```
+
+Purge the development chain's state:
+
+```bash
+./target/release/node-template purge-chain --dev
+```
+
+Start the development chain with detailed logging:
+
+```bash
+RUST_LOG=debug RUST_BACKTRACE=1 ./target/release/node-template -lruntime=debug --dev
+```
+
+### Multi-Node Local Testnet
+
+If you want to see the multi-node consensus algorithm in action, refer to
+[our Start a Private Network tutorial](https://substrate.dev/docs/en/tutorials/start-a-private-network/).
+
+## Template Structure
+
+A Substrate project such as this consists of a number of components that are spread across a few
+directories.
+
+### Node
+
+A blockchain node is an application that allows users to participate in a blockchain network.
+Substrate-based blockchain nodes expose a number of capabilities:
+
+-   Networking: Substrate nodes use the [`libp2p`](https://libp2p.io/) networking stack to allow the
+    nodes in the network to communicate with one another.
+-   Consensus: Blockchains must have a way to come to
+    [consensus](https://substrate.dev/docs/en/knowledgebase/advanced/consensus) on the state of the
+    network. Substrate makes it possible to supply custom consensus engines and also ships with
+    several consensus mechanisms that have been built on top of
+    [Web3 Foundation research](https://research.web3.foundation/en/latest/polkadot/NPoS/index.html).
+-   RPC Server: A remote procedure call (RPC) server is used to interact with Substrate nodes.
+
+There are several files in the `node` directory - take special note of the following:
+
+-   [`chain_spec.rs`](./node/src/chain_spec.rs): A
+    [chain specification](https://substrate.dev/docs/en/knowledgebase/integrate/chain-spec) is a
+    source code file that defines a Substrate chain's initial (genesis) state. Chain specifications
+    are useful for development and testing, and critical when architecting the launch of a
+    production chain. Take note of the `development_config` and `testnet_genesis` functions, which
+    are used to define the genesis state for the local development chain configuration. These
+    functions identify some
+    [well-known accounts](https://substrate.dev/docs/en/knowledgebase/integrate/subkey#well-known-keys)
+    and use them to configure the blockchain's initial state.
+-   [`service.rs`](./node/src/service.rs): This file defines the node implementation. Take note of
+    the libraries that this file imports and the names of the functions it invokes. In particular,
+    there are references to consensus-related topics, such as the
+    [longest chain rule](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#longest-chain-rule),
+    the [Aura](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#aura) block authoring
+    mechanism and the
+    [GRANDPA](https://substrate.dev/docs/en/knowledgebase/advanced/consensus#grandpa) finality
+    gadget.
+
+After the node has been [built](#build), refer to the embedded documentation to learn more about the
+capabilities and configuration parameters that it exposes:
+
+```shell
+./target/release/node-template --help
+```
+
+### Runtime
+
+In Substrate, the terms
+"[runtime](https://substrate.dev/docs/en/knowledgebase/getting-started/glossary#runtime)" and
+"[state transition function](https://substrate.dev/docs/en/knowledgebase/getting-started/glossary#stf-state-transition-function)"
+are analogous - they refer to the core logic of the blockchain that is responsible for validating
+blocks and executing the state changes they define. The Substrate project in this repository uses
+the [FRAME](https://substrate.dev/docs/en/knowledgebase/runtime/frame) framework to construct a
+blockchain runtime. FRAME allows runtime developers to declare domain-specific logic in modules
+called "pallets". At the heart of FRAME is a helpful
+[macro language](https://substrate.dev/docs/en/knowledgebase/runtime/macros) that makes it easy to
+create pallets and flexibly compose them to create blockchains that can address
+[a variety of needs](https://www.substrate.io/substrate-users/).
+
+Review the [FRAME runtime implementation](./runtime/src/lib.rs) included in this template and note
+the following:
+
+-   This file configures several pallets to include in the runtime. Each pallet configuration is
+    defined by a code block that begins with `impl $PALLET_NAME::Config for Runtime`.
+-   The pallets are composed into a single runtime by way of the
+    [`construct_runtime!`](https://crates.parity.io/frame_support/macro.construct_runtime.html)
+    macro, which is part of the core
+    [FRAME Support](https://substrate.dev/docs/en/knowledgebase/runtime/frame#support-library)
+    library.
+
+### Pallets
+
+The runtime in this project is constructed using many FRAME pallets that ship with the
+[core Substrate repository](https://github.com/paritytech/substrate/tree/master/frame) and a
+template pallet that is [defined in the `pallets`](./pallets/template/src/lib.rs) directory.
+
+A FRAME pallet is compromised of a number of blockchain primitives:
+
+-   Storage: FRAME defines a rich set of powerful
+    [storage abstractions](https://substrate.dev/docs/en/knowledgebase/runtime/storage) that makes
+    it easy to use Substrate's efficient key-value database to manage the evolving state of a
+    blockchain.
+-   Dispatchables: FRAME pallets define special types of functions that can be invoked (dispatched)
+    from outside of the runtime in order to update its state.
+-   Events: Substrate uses [events](https://substrate.dev/docs/en/knowledgebase/runtime/events) to
+    notify users of important changes in the runtime.
+-   Errors: When a dispatchable fails, it returns an error.
+-   Config: The `Config` configuration interface is used to define the types and parameters upon
+    which a FRAME pallet depends.
+
+### Run in Docker
+
+First, install [Docker](https://docs.docker.com/get-docker/) and
+[Docker Compose](https://docs.docker.com/compose/install/).
+
+Then run the following command to start a single node development chain.
+
+```bash
+./scripts/docker_run.sh
+```
+
+This command will firstly compile your code, and then start a local development network. You can
+also replace the default command (`cargo build --release && ./target/release/node-template --dev --ws-external`)
+by appending your own. A few useful ones are as follow.
+
+```bash
+# Run Substrate node without re-compiling
+./scripts/docker_run.sh ./target/release/node-template --dev --ws-external
+
+# Purge the local dev chain
+./scripts/docker_run.sh ./target/release/node-template purge-chain --dev
+
+# Check whether the code is compilable
+./scripts/docker_run.sh cargo check
+```

doc/rust-setup.md

+---
+title: Installation
+---
+
+This page will guide you through the steps needed to prepare a computer for development with the
+Substrate Node Template. Since Substrate is built with
+[the Rust programming language](https://www.rust-lang.org/), the first thing you will need to do is
+prepare the computer for Rust development - these steps will vary based on the computer's operating
+system. Once Rust is configured, you will use its toolchains to interact with Rust projects; the
+commands for Rust's toolchains will be the same for all supported, Unix-based operating systems.
+
+## Unix-Based Operating Systems
+
+Substrate development is easiest on Unix-based operating systems like macOS or Linux. The examples
+in the Substrate [Tutorials](https://substrate.dev/tutorials) and [Recipes](https://substrate.dev/recipes/)
+use Unix-style terminals to demonstrate how to interact with Substrate from the command line.
+
+### macOS
+
+Open the Terminal application and execute the following commands:
+
+```bash
+# Install Homebrew if necessary https://brew.sh/
+/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
+
+# Make sure Homebrew is up-to-date, install openssl and cmake
+brew update
+brew install openssl cmake
+```
+
+### Ubuntu/Debian
+
+Use a terminal shell to execute the following commands:
+
+```bash
+sudo apt update
+# May prompt for location information
+sudo apt install -y cmake pkg-config libssl-dev git build-essential clang libclang-dev curl
+```
+
+### Arch Linux
+
+Run these commands from a terminal:
+
+```bash
+pacman -Syu --needed --noconfirm cmake gcc openssl-1.0 pkgconf git clang
+export OPENSSL_LIB_DIR="/usr/lib/openssl-1.0"
+export OPENSSL_INCLUDE_DIR="/usr/include/openssl-1.0"
+```
+
+### Fedora/RHEL/CentOS
+
+Use a terminal to run the following commands:
+
+```bash
+# Update
+sudo dnf update
+# Install packages
+sudo dnf install cmake pkgconfig rocksdb rocksdb-devel llvm git libcurl libcurl-devel curl-devel clang
+```
+
+## Rust Developer Environment
+
+This project uses [`rustup`](https://rustup.rs/) to help manage the Rust toolchain. First install
+and configure `rustup`:
+
+```bash
+# Install
+curl https://sh.rustup.rs -sSf | sh
+# Configure
+source ~/.cargo/env
+```
+
+Finally, configure the Rust toolchain:
+
+```bash
+rustup default stable
+rustup update nightly
+rustup update stable
+rustup target add wasm32-unknown-unknown --toolchain nightly
+```

docker-compose.yml

+version: "3.2"
+
+services:
+  dev:
+    container_name: node-template
+    image: paritytech/ci-linux:974ba3ac-20201006
+    working_dir: /var/www/node-template
+    ports:
+      - "9944:9944"
+    environment:
+      - CARGO_HOME=/var/www/node-template/.cargo
+    volumes:
+      - .:/var/www/node-template
+      - type: bind
+        source: ./.local
+        target: /root/.local
+    command: bash -c "cargo build --release && ./target/release/node-template --dev --ws-external"

node/Cargo.toml

+[package]
+authors = ['Substrate DevHub <https://github.com/substrate-developer-hub>']
+build = 'build.rs'
+description = 'A fresh FRAME-based Substrate node, ready for hacking.'
+edition = '2018'
+homepage = 'https://substrate.dev'
+license = 'Unlicense'
+name = 'node-template'
+repository = 'https://github.com/substrate-developer-hub/substrate-node-template/'
+version = '3.0.0'
+
+[[bin]]
+name = 'node-template'
+
+[package.metadata.docs.rs]
+targets = ['x86_64-unknown-linux-gnu']
+
+[build-dependencies]
+substrate-build-script-utils = '3.0.0'
+
+[dependencies]
+jsonrpc-core = '15.1.0'
+structopt = '0.3.8'
+
+# local dependencies
+node-template-runtime = { path = '../runtime', version = '3.0.0' }
+
+# Substrate dependencies
+frame-benchmarking = '3.0.0'
+frame-benchmarking-cli = '3.0.0'
+pallet-transaction-payment-rpc = '3.0.0'
+sc-basic-authorship = '0.9.0'
+sc-cli = { features = ['wasmtime'], version = '0.9.0' }
+sc-client-api = '3.0.0'
+sc-consensus = '0.9.0'
+sc-consensus-aura = '0.9.0'
+sc-executor = { features = ['wasmtime'], version = '0.9.0' }
+sc-finality-grandpa = '0.9.0'
+sc-keystore = '3.0.0'
+sc-rpc = '3.0.0'
+sc-rpc-api = '0.9.0'
+sc-service = { features = ['wasmtime'], version = '0.9.0' }
+sc-transaction-pool = '3.0.0'
+sp-api = '3.0.0'
+sp-block-builder = '3.0.0'
+sp-blockchain = '3.0.0'
+sp-consensus = '0.9.0'
+sp-consensus-aura = '0.9.0'
+sp-core = '3.0.0'
+sp-finality-grandpa = '3.0.0'
+sp-inherents = '3.0.0'
+sp-runtime = '3.0.0'
+sp-transaction-pool = '3.0.0'
+substrate-frame-rpc-system = '3.0.0'
+
+[features]
+default = []
+runtime-benchmarks = ['node-template-runtime/runtime-benchmarks']

node/build.rs

+use substrate_build_script_utils::{generate_cargo_keys, rerun_if_git_head_changed};
+
+fn main() {
+	generate_cargo_keys();
+
+	rerun_if_git_head_changed();
+}

node/src/chain_spec.rs

+use sp_core::{Pair, Public, sr25519};
+use node_template_runtime::{
+	AccountId, AuraConfig, BalancesConfig, GenesisConfig, GrandpaConfig,
+	SudoConfig, SystemConfig, WASM_BINARY, Signature
+};
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+use sp_finality_grandpa::AuthorityId as GrandpaId;
+use sp_runtime::traits::{Verify, IdentifyAccount};
+use sc_service::ChainType;
+
+// The URL for the telemetry server.
+// const STAGING_TELEMETRY_URL: &str = "wss://telemetry.polkadot.io/submit/";
+
+/// Specialized `ChainSpec`. This is a specialization of the general Substrate ChainSpec type.
+pub type ChainSpec = sc_service::GenericChainSpec<GenesisConfig>;
+
+/// Generate a crypto pair from seed.
+pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {
+	TPublic::Pair::from_string(&format!("//{}", seed), None)
+		.expect("static values are valid; qed")
+		.public()
+}
+
+type AccountPublic = <Signature as Verify>::Signer;
+
+/// Generate an account ID from seed.
+pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId where
+	AccountPublic: From<<TPublic::Pair as Pair>::Public>
+{
+	AccountPublic::from(get_from_seed::<TPublic>(seed)).into_account()
+}
+
+/// Generate an Aura authority key.
+pub fn authority_keys_from_seed(s: &str) -> (AuraId, GrandpaId) {
+	(
+		get_from_seed::<AuraId>(s),
+		get_from_seed::<GrandpaId>(s),
+	)
+}
+
+pub fn development_config() -> Result<ChainSpec, String> {
+	let wasm_binary = WASM_BINARY.ok_or_else(|| "Development wasm binary not available".to_string())?;
+
+	Ok(ChainSpec::from_genesis(
+		// Name
+		"Development",
+		// ID
+		"dev",
+		ChainType::Development,
+		move || testnet_genesis(
+			wasm_binary,
+			// Initial PoA authorities
+			vec![
+				authority_keys_from_seed("Alice"),
+			],
+			// Sudo account
+			get_account_id_from_seed::<sr25519::Public>("Alice"),
+			// Pre-funded accounts
+			vec![
+				get_account_id_from_seed::<sr25519::Public>("Alice"),
+				get_account_id_from_seed::<sr25519::Public>("Bob"),
+				get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
+				get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
+			],
+			true,
+		),
+		// Bootnodes
+		vec![],
+		// Telemetry
+		None,
+		// Protocol ID
+		None,
+		// Properties
+		None,
+		// Extensions
+		None,
+	))
+}
+
+pub fn local_testnet_config() -> Result<ChainSpec, String> {
+	let wasm_binary = WASM_BINARY.ok_or_else(|| "Development wasm binary not available".to_string())?;
+
+	Ok(ChainSpec::from_genesis(
+		// Name
+		"Local Testnet",
+		// ID
+		"local_testnet",
+		ChainType::Local,
+		move || testnet_genesis(
+			wasm_binary,
+			// Initial PoA authorities
+			vec![
+				authority_keys_from_seed("Alice"),
+				authority_keys_from_seed("Bob"),
+			],
+			// Sudo account
+			get_account_id_from_seed::<sr25519::Public>("Alice"),
+			// Pre-funded accounts
+			vec![
+				get_account_id_from_seed::<sr25519::Public>("Alice"),
+				get_account_id_from_seed::<sr25519::Public>("Bob"),
+				get_account_id_from_seed::<sr25519::Public>("Charlie"),
+				get_account_id_from_seed::<sr25519::Public>("Dave"),
+				get_account_id_from_seed::<sr25519::Public>("Eve"),
+				get_account_id_from_seed::<sr25519::Public>("Ferdie"),
+				get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
+				get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
+				get_account_id_from_seed::<sr25519::Public>("Charlie//stash"),
+				get_account_id_from_seed::<sr25519::Public>("Dave//stash"),
+				get_account_id_from_seed::<sr25519::Public>("Eve//stash"),
+				get_account_id_from_seed::<sr25519::Public>("Ferdie//stash"),
+			],
+			true,
+		),
+		// Bootnodes
+		vec![],
+		// Telemetry
+		None,
+		// Protocol ID
+		None,
+		// Properties
+		None,
+		// Extensions
+		None,
+	))
+}
+
+/// Configure initial storage state for FRAME modules.
+fn testnet_genesis(
+	wasm_binary: &[u8],
+	initial_authorities: Vec<(AuraId, GrandpaId)>,
+	root_key: AccountId,
+	endowed_accounts: Vec<AccountId>,
+	_enable_println: bool,
+) -> GenesisConfig {
+	GenesisConfig {
+		frame_system: Some(SystemConfig {
+			// Add Wasm runtime to storage.
+			code: wasm_binary.to_vec(),
+			changes_trie_config: Default::default(),
+		}),
+		pallet_balances: Some(BalancesConfig {
+			// Configure endowed accounts with initial balance of 1 << 60.
+			balances: endowed_accounts.iter().cloned().map(|k|(k, 1 << 60)).collect(),
+		}),
+		pallet_aura: Some(AuraConfig {
+			authorities: initial_authorities.iter().map(|x| (x.0.clone())).collect(),
+		}),
+		pallet_grandpa: Some(GrandpaConfig {
+			authorities: initial_authorities.iter().map(|x| (x.1.clone(), 1)).collect(),
+		}),
+		pallet_sudo: Some(SudoConfig {
+			// Assign network admin rights.
+			key: root_key,
+		}),
+	}
+}

node/src/cli.rs

+use structopt::StructOpt;
+use sc_cli::RunCmd;
+
+#[derive(Debug, StructOpt)]
+pub struct Cli {
+	#[structopt(subcommand)]
+	pub subcommand: Option<Subcommand>,
+
+	#[structopt(flatten)]
+	pub run: RunCmd,
+}
+
+#[derive(Debug, StructOpt)]
+pub enum Subcommand {
+	/// Key management cli utilities
+	Key(sc_cli::KeySubcommand),
+	/// Build a chain specification.
+	BuildSpec(sc_cli::BuildSpecCmd),
+
+	/// Validate blocks.
+	CheckBlock(sc_cli::CheckBlockCmd),
+
+	/// Export blocks.
+	ExportBlocks(sc_cli::ExportBlocksCmd),
+
+	/// Export the state of a given block into a chain spec.
+	ExportState(sc_cli::ExportStateCmd),
+
+	/// Import blocks.
+	ImportBlocks(sc_cli::ImportBlocksCmd),
+
+	/// Remove the whole chain.
+	PurgeChain(sc_cli::PurgeChainCmd),
+
+	/// Revert the chain to a previous state.
+	Revert(sc_cli::RevertCmd),
+
+	/// The custom benchmark subcommmand benchmarking runtime pallets.
+	#[structopt(name = "benchmark", about = "Benchmark runtime pallets.")]
+	Benchmark(frame_benchmarking_cli::BenchmarkCmd),
+}

node/src/command.rs

+// This file is part of Substrate.
+
+// Copyright (C) 2017-2021 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use crate::{chain_spec, service};
+use crate::cli::{Cli, Subcommand};
+use sc_cli::{SubstrateCli, RuntimeVersion, Role, ChainSpec};
+use sc_service::PartialComponents;
+use node_template_runtime::Block;
+
+impl SubstrateCli for Cli {
+	fn impl_name() -> String {
+		"Substrate Node".into()
+	}
+
+	fn impl_version() -> String {
+		env!("SUBSTRATE_CLI_IMPL_VERSION").into()
+	}
+
+	fn description() -> String {
+		env!("CARGO_PKG_DESCRIPTION").into()
+	}
+
+	fn author() -> String {
+		env!("CARGO_PKG_AUTHORS").into()
+	}
+
+	fn support_url() -> String {
+		"support.anonymous.an".into()
+	}
+
+	fn copyright_start_year() -> i32 {
+		2017
+	}
+
+	fn load_spec(&self, id: &str) -> Result<Box<dyn sc_service::ChainSpec>, String> {
+		Ok(match id {
+			"dev" => Box::new(chain_spec::development_config()?),
+			"" | "local" => Box::new(chain_spec::local_testnet_config()?),
+			path => Box::new(chain_spec::ChainSpec::from_json_file(
+				std::path::PathBuf::from(path),
+			)?),
+		})
+	}
+
+	fn native_runtime_version(_: &Box<dyn ChainSpec>) -> &'static RuntimeVersion {
+		&node_template_runtime::VERSION
+	}
+}
+
+/// Parse and run command line arguments
+pub fn run() -> sc_cli::Result<()> {
+	let cli = Cli::from_args();
+
+	match &cli.subcommand {
+		Some(Subcommand::Key(cmd)) => cmd.run(&cli),
+		Some(Subcommand::BuildSpec(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.sync_run(|config| cmd.run(config.chain_spec, config.network))
+		},
+		Some(Subcommand::CheckBlock(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|config| {
+				let PartialComponents { client, task_manager, import_queue, ..}
+					= service::new_partial(&config)?;
+				Ok((cmd.run(client, import_queue), task_manager))
+			})
+		},
+		Some(Subcommand::ExportBlocks(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|config| {
+				let PartialComponents { client, task_manager, ..}
+					= service::new_partial(&config)?;
+				Ok((cmd.run(client, config.database), task_manager))
+			})
+		},
+		Some(Subcommand::ExportState(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|config| {
+				let PartialComponents { client, task_manager, ..}
+					= service::new_partial(&config)?;
+				Ok((cmd.run(client, config.chain_spec), task_manager))
+			})
+		},
+		Some(Subcommand::ImportBlocks(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|config| {
+				let PartialComponents { client, task_manager, import_queue, ..}
+					= service::new_partial(&config)?;
+				Ok((cmd.run(client, import_queue), task_manager))
+			})
+		},
+		Some(Subcommand::PurgeChain(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.sync_run(|config| cmd.run(config.database))
+		},
+		Some(Subcommand::Revert(cmd)) => {
+			let runner = cli.create_runner(cmd)?;
+			runner.async_run(|config| {
+				let PartialComponents { client, task_manager, backend, ..}
+					= service::new_partial(&config)?;
+				Ok((cmd.run(client, backend), task_manager))
+			})
+		},
+		Some(Subcommand::Benchmark(cmd)) => {
+			if cfg!(feature = "runtime-benchmarks") {
+				let runner = cli.create_runner(cmd)?;
+
+				runner.sync_run(|config| cmd.run::<Block, service::Executor>(config))
+			} else {
+				Err("Benchmarking wasn't enabled when building the node. \
+				You can enable it with `--features runtime-benchmarks`.".into())
+			}
+		},
+		None => {
+			let runner = cli.create_runner(&cli.run)?;
+			runner.run_node_until_exit(|config| async move {
+				match config.role {
+					Role::Light => service::new_light(config),
+					_ => service::new_full(config),
+				}.map_err(sc_cli::Error::Service)
+			})
+		}
+	}
+}

node/src/lib.rs

+pub mod chain_spec;
+pub mod service;
+pub mod rpc;

node/src/main.rs

+//! Substrate Node Template CLI library.
+#![warn(missing_docs)]
+
+mod chain_spec;
+#[macro_use]
+mod service;
+mod cli;
+mod command;
+mod rpc;
+
+fn main() -> sc_cli::Result<()> {
+	command::run()
+}

node/src/rpc.rs

+//! A collection of node-specific RPC methods.
+//! Substrate provides the `sc-rpc` crate, which defines the core RPC layer
+//! used by Substrate nodes. This file extends those RPC definitions with
+//! capabilities that are specific to this project's runtime configuration.
+
+#![warn(missing_docs)]
+
+use std::sync::Arc;
+
+use node_template_runtime::{opaque::Block, AccountId, Balance, Index};
+use sp_api::ProvideRuntimeApi;
+use sp_blockchain::{Error as BlockChainError, HeaderMetadata, HeaderBackend};
+use sp_block_builder::BlockBuilder;
+pub use sc_rpc_api::DenyUnsafe;
+use sp_transaction_pool::TransactionPool;
+
+
+/// Full client dependencies.
+pub struct FullDeps<C, P> {
+	/// The client instance to use.
+	pub client: Arc<C>,
+	/// Transaction pool instance.
+	pub pool: Arc<P>,
+	/// Whether to deny unsafe calls
+	pub deny_unsafe: DenyUnsafe,
+}
+
+/// Instantiate all full RPC extensions.
+pub fn create_full<C, P>(
+	deps: FullDeps<C, P>,
+) -> jsonrpc_core::IoHandler<sc_rpc::Metadata> where
+	C: ProvideRuntimeApi<Block>,
+	C: HeaderBackend<Block> + HeaderMetadata<Block, Error=BlockChainError> + 'static,
+	C: Send + Sync + 'static,
+	C::Api: substrate_frame_rpc_system::AccountNonceApi<Block, AccountId, Index>,
+	C::Api: pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>,
+	C::Api: BlockBuilder<Block>,
+	P: TransactionPool + 'static,
+{
+	use substrate_frame_rpc_system::{FullSystem, SystemApi};
+	use pallet_transaction_payment_rpc::{TransactionPayment, TransactionPaymentApi};
+
+	let mut io = jsonrpc_core::IoHandler::default();
+	let FullDeps {
+		client,
+		pool,
+		deny_unsafe,
+	} = deps;
+
+	io.extend_with(
+		SystemApi::to_delegate(FullSystem::new(client.clone(), pool, deny_unsafe))
+	);
+
+	io.extend_with(
+		TransactionPaymentApi::to_delegate(TransactionPayment::new(client.clone()))
+	);
+
+	// Extend this RPC with a custom API by using the following syntax.
+	// `YourRpcStruct` should have a reference to a client, which is needed
+	// to call into the runtime.
+	// `io.extend_with(YourRpcTrait::to_delegate(YourRpcStruct::new(ReferenceToClient, ...)));`
+
+	io
+}

node/src/service.rs

+//! Service and ServiceFactory implementation. Specialized wrapper over substrate service.
+
+use std::sync::Arc;
+use std::time::Duration;
+use sc_client_api::{ExecutorProvider, RemoteBackend};
+use node_template_runtime::{self, opaque::Block, RuntimeApi};
+use sc_service::{error::Error as ServiceError, Configuration, TaskManager};
+use sp_inherents::InherentDataProviders;
+use sc_executor::native_executor_instance;
+pub use sc_executor::NativeExecutor;
+use sp_consensus_aura::sr25519::{AuthorityPair as AuraPair};
+use sc_finality_grandpa::SharedVoterState;
+use sc_keystore::LocalKeystore;
+
+// Our native executor instance.
+native_executor_instance!(
+	pub Executor,
+	node_template_runtime::api::dispatch,
+	node_template_runtime::native_version,
+	frame_benchmarking::benchmarking::HostFunctions,
+);
+
+type FullClient = sc_service::TFullClient<Block, RuntimeApi, Executor>;
+type FullBackend = sc_service::TFullBackend<Block>;
+type FullSelectChain = sc_consensus::LongestChain<FullBackend, Block>;
+
+pub fn new_partial(config: &Configuration) -> Result<sc_service::PartialComponents<
+	FullClient, FullBackend, FullSelectChain,
+	sp_consensus::DefaultImportQueue<Block, FullClient>,
+	sc_transaction_pool::FullPool<Block, FullClient>,
+	(
+		sc_consensus_aura::AuraBlockImport<
+			Block,
+			FullClient,
+			sc_finality_grandpa::GrandpaBlockImport<FullBackend, Block, FullClient, FullSelectChain>,
+			AuraPair
+		>,
+		sc_finality_grandpa::LinkHalf<Block, FullClient, FullSelectChain>,
+	)
+>, ServiceError> {
+	if config.keystore_remote.is_some() {
+		return Err(ServiceError::Other(
+			format!("Remote Keystores are not supported.")))
+	}
+	let inherent_data_providers = sp_inherents::InherentDataProviders::new();
+
+	let (client, backend, keystore_container, task_manager) =
+		sc_service::new_full_parts::<Block, RuntimeApi, Executor>(&config)?;
+	let client = Arc::new(client);
+
+	let select_chain = sc_consensus::LongestChain::new(backend.clone());
+
+	let transaction_pool = sc_transaction_pool::BasicPool::new_full(
+		config.transaction_pool.clone(),
+		config.role.is_authority().into(),
+		config.prometheus_registry(),
+		task_manager.spawn_handle(),
+		client.clone(),
+	);
+
+	let (grandpa_block_import, grandpa_link) = sc_finality_grandpa::block_import(
+		client.clone(), &(client.clone() as Arc<_>), select_chain.clone(),
+	)?;
+
+	let aura_block_import = sc_consensus_aura::AuraBlockImport::<_, _, _, AuraPair>::new(
+		grandpa_block_import.clone(), client.clone(),
+	);
+
+	let import_queue = sc_consensus_aura::import_queue::<_, _, _, AuraPair, _, _>(
+		sc_consensus_aura::slot_duration(&*client)?,
+		aura_block_import.clone(),
+		Some(Box::new(grandpa_block_import.clone())),
+		client.clone(),
+		inherent_data_providers.clone(),
+		&task_manager.spawn_handle(),
+		config.prometheus_registry(),
+		sp_consensus::CanAuthorWithNativeVersion::new(client.executor().clone()),
+	)?;
+
+	Ok(sc_service::PartialComponents {
+		client, backend, task_manager, import_queue, keystore_container, select_chain, transaction_pool,
+		inherent_data_providers,
+		other: (aura_block_import, grandpa_link),
+	})
+}
+
+fn remote_keystore(_url: &String) -> Result<Arc<LocalKeystore>, &'static str> {
+	// FIXME: here would the concrete keystore be built,
+	//        must return a concrete type (NOT `LocalKeystore`) that
+	//        implements `CryptoStore` and `SyncCryptoStore`
+	Err("Remote Keystore not supported.")
+}
+
+/// Builds a new service for a full client.
+pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError> {
+	let sc_service::PartialComponents {
+		client, backend, mut task_manager, import_queue, mut keystore_container, select_chain, transaction_pool,
+		inherent_data_providers,
+		other: (block_import, grandpa_link),
+	} = new_partial(&config)?;
+
+	if let Some(url) = &config.keystore_remote {
+		match remote_keystore(url) {
+			Ok(k) => keystore_container.set_remote_keystore(k),
+			Err(e) => {
+				return Err(ServiceError::Other(
+					format!("Error hooking up remote keystore for {}: {}", url, e)))
+			}
+		};
+	}
+
+	config.network.extra_sets.push(sc_finality_grandpa::grandpa_peers_set_config());
+
+	let (network, network_status_sinks, system_rpc_tx, network_starter) =
+		sc_service::build_network(sc_service::BuildNetworkParams {
+			config: &config,
+			client: client.clone(),
+			transaction_pool: transaction_pool.clone(),
+			spawn_handle: task_manager.spawn_handle(),
+			import_queue,
+			on_demand: None,
+			block_announce_validator_builder: None,
+		})?;
+
+	if config.offchain_worker.enabled {
+		sc_service::build_offchain_workers(
+			&config, backend.clone(), task_manager.spawn_handle(), client.clone(), network.clone(),
+		);
+	}
+
+	let role = config.role.clone();
+	let force_authoring = config.force_authoring;
+	let backoff_authoring_blocks: Option<()> = None;
+	let name = config.network.node_name.clone();
+	let enable_grandpa = !config.disable_grandpa;
+	let prometheus_registry = config.prometheus_registry().cloned();
+
+	let rpc_extensions_builder = {
+		let client = client.clone();
+		let pool = transaction_pool.clone();
+
+		Box::new(move |deny_unsafe, _| {
+			let deps = crate::rpc::FullDeps {
+				client: client.clone(),
+				pool: pool.clone(),
+				deny_unsafe,
+			};
+
+			crate::rpc::create_full(deps)
+		})
+	};
+
+	let (_rpc_handlers, telemetry_connection_notifier) = sc_service::spawn_tasks(
+		sc_service::SpawnTasksParams {
+			network: network.clone(),
+			client: client.clone(),
+			keystore: keystore_container.sync_keystore(),
+			task_manager: &mut task_manager,
+			transaction_pool: transaction_pool.clone(),
+			rpc_extensions_builder,
+			on_demand: None,
+			remote_blockchain: None,
+			backend,
+			network_status_sinks,
+			system_rpc_tx,
+			config,
+		},
+	)?;
+
+	if role.is_authority() {
+		let proposer = sc_basic_authorship::ProposerFactory::new(
+			task_manager.spawn_handle(),
+			client.clone(),
+			transaction_pool,
+			prometheus_registry.as_ref(),
+		);
+
+		let can_author_with =
+			sp_consensus::CanAuthorWithNativeVersion::new(client.executor().clone());
+
+		let aura = sc_consensus_aura::start_aura::<_, _, _, _, _, AuraPair, _, _, _, _>(
+			sc_consensus_aura::slot_duration(&*client)?,
+			client.clone(),
+			select_chain,
+			block_import,
+			proposer,
+			network.clone(),
+			inherent_data_providers.clone(),
+			force_authoring,
+			backoff_authoring_blocks,
+			keystore_container.sync_keystore(),
+			can_author_with,
+		)?;
+
+		// the AURA authoring task is considered essential, i.e. if it
+		// fails we take down the service with it.
+		task_manager.spawn_essential_handle().spawn_blocking("aura", aura);
+	}
+
+	// if the node isn't actively participating in consensus then it doesn't
+	// need a keystore, regardless of which protocol we use below.
+	let keystore = if role.is_authority() {
+		Some(keystore_container.sync_keystore())
+	} else {
+		None
+	};
+
+	let grandpa_config = sc_finality_grandpa::Config {
+		// FIXME #1578 make this available through chainspec
+		gossip_duration: Duration::from_millis(333),
+		justification_period: 512,
+		name: Some(name),
+		observer_enabled: false,
+		keystore,
+		is_authority: role.is_network_authority(),
+	};
+
+	if enable_grandpa {
+		// start the full GRANDPA voter
+		// NOTE: non-authorities could run the GRANDPA observer protocol, but at
+		// this point the full voter should provide better guarantees of block
+		// and vote data availability than the observer. The observer has not
+		// been tested extensively yet and having most nodes in a network run it
+		// could lead to finality stalls.
+		let grandpa_config = sc_finality_grandpa::GrandpaParams {
+			config: grandpa_config,
+			link: grandpa_link,
+			network,
+			telemetry_on_connect: telemetry_connection_notifier.map(|x| x.on_connect_stream()),
+			voting_rule: sc_finality_grandpa::VotingRulesBuilder::default().build(),
+			prometheus_registry,
+			shared_voter_state: SharedVoterState::empty(),
+		};
+
+		// the GRANDPA voter task is considered infallible, i.e.
+		// if it fails we take down the service with it.
+		task_manager.spawn_essential_handle().spawn_blocking(
+			"grandpa-voter",
+			sc_finality_grandpa::run_grandpa_voter(grandpa_config)?
+		);
+	}
+
+	network_starter.start_network();
+	Ok(task_manager)
+}
+
+/// Builds a new service for a light client.
+pub fn new_light(mut config: Configuration) -> Result<TaskManager, ServiceError> {
+	let (client, backend, keystore_container, mut task_manager, on_demand) =
+		sc_service::new_light_parts::<Block, RuntimeApi, Executor>(&config)?;
+
+	config.network.extra_sets.push(sc_finality_grandpa::grandpa_peers_set_config());
+
+	let select_chain = sc_consensus::LongestChain::new(backend.clone());
+
+	let transaction_pool = Arc::new(sc_transaction_pool::BasicPool::new_light(
+		config.transaction_pool.clone(),
+		config.prometheus_registry(),
+		task_manager.spawn_handle(),
+		client.clone(),
+		on_demand.clone(),
+	));
+
+	let (grandpa_block_import, _) = sc_finality_grandpa::block_import(
+		client.clone(),
+		&(client.clone() as Arc<_>),
+		select_chain.clone(),
+	)?;
+
+	let aura_block_import = sc_consensus_aura::AuraBlockImport::<_, _, _, AuraPair>::new(
+		grandpa_block_import.clone(),
+		client.clone(),
+	);
+
+	let import_queue = sc_consensus_aura::import_queue::<_, _, _, AuraPair, _, _>(
+		sc_consensus_aura::slot_duration(&*client)?,
+		aura_block_import,
+		Some(Box::new(grandpa_block_import)),
+		client.clone(),
+		InherentDataProviders::new(),
+		&task_manager.spawn_handle(),
+		config.prometheus_registry(),
+		sp_consensus::NeverCanAuthor,
+	)?;
+
+	let (network, network_status_sinks, system_rpc_tx, network_starter) =
+		sc_service::build_network(sc_service::BuildNetworkParams {
+			config: &config,
+			client: client.clone(),
+			transaction_pool: transaction_pool.clone(),
+			spawn_handle: task_manager.spawn_handle(),
+			import_queue,
+			on_demand: Some(on_demand.clone()),
+			block_announce_validator_builder: None,
+		})?;
+
+	if config.offchain_worker.enabled {
+		sc_service::build_offchain_workers(
+			&config, backend.clone(), task_manager.spawn_handle(), client.clone(), network.clone(),
+		);
+	}
+
+	sc_service::spawn_tasks(sc_service::SpawnTasksParams {
+		remote_blockchain: Some(backend.remote_blockchain()),
+		transaction_pool,
+		task_manager: &mut task_manager,
+		on_demand: Some(on_demand),
+		rpc_extensions_builder: Box::new(|_, _| ()),
+		config,
+		client,
+		keystore: keystore_container.sync_keystore(),
+		backend,
+		network,
+		network_status_sinks,
+		system_rpc_tx,
+	})?;
+
+	network_starter.start_network();
+
+	Ok(task_manager)
+}

pallets/poe/Cargo.toml

+[package]
+authors = ['Substrate DevHub <https://github.com/substrate-developer-hub>']
+description = 'FRAME pallet template for proof of existence.'
+edition = '2018'
+homepage = 'https://substrate.dev'
+license = 'Unlicense'
+name = 'pallet-poe'
+repository = 'https://github.com/substrate-developer-hub/substrate-node-template/'
+version = '3.0.0'
+
+[package.metadata.docs.rs]
+targets = ['x86_64-unknown-linux-gnu']
+
+# alias "parity-scale-code" to "codec"
+[dependencies.codec]
+default-features = false
+features = ['derive']
+package = 'parity-scale-codec'
+version = '2.0.0'
+
+[dependencies]
+frame-support = { default-features = false, version = '3.0.0' }
+frame-system = { default-features = false, version = '3.0.0' }
+#--snip--
+sp-std = { default-features = false, version = '3.0.0' }
+
+[dev-dependencies]
+serde = { version = "1.0.119" }
+sp-core = { default-features = false, version = '3.0.0' }
+sp-io = { default-features = false, version = '3.0.0' }
+sp-runtime = { default-features = false, version = '3.0.0' }
+
+[features]
+default = ['std']
+std = [
+    'codec/std',
+    'frame-support/std',
+    'frame-system/std',
+    'sp-std/std',
+]

pallets/poe/src/lib.rs

+#![cfg_attr(not(feature = "std"), no_std)]
+
+/// Edit this file to define custom logic or remove it if it is not needed.
+/// Learn more about FRAME and the core library of Substrate FRAME pallets:
+/// https://substrate.dev/docs/en/knowledgebase/runtime/frame
+use sp_std::{prelude::*};
+use frame_support::{
+    decl_module, decl_storage, decl_event, decl_error, ensure, StorageMap,dispatch::DispatchResult,
+};
+use frame_system::ensure_signed;
+use sp_std::vec::Vec;
+
+//use frame_support::{decl_module, decl_storage, decl_event, decl_error, dispatch, traits::Get};
+//use frame_system::ensure_signed;
+
+#[cfg(test)]
+mod mock;
+
+#[cfg(test)]
+mod tests;
+
+/// Configure the pallet by specifying the parameters and types on which it depends.
+pub trait Config: frame_system::Config {
+	/// Because this pallet emits events, it depends on the runtime's definition of an event.
+	type Event: From<Event<Self>> + Into<<Self as frame_system::Config>::Event>;
+}
+
+// The pallet's runtime storage items.
+// https://substrate.dev/docs/en/knowledgebase/runtime/storage
+decl_storage! {
+	// A unique name is used to ensure that the pallet's storage items are isolated.
+	// This name may be updated, but each pallet in the runtime must use a unique name.
+	// ---------------------------------vvvvvvvvvvvvvv
+	trait Store for Module<T: Config> as TemplateModule {
+        /// The storage item for our proofs.
+        /// 它将证明映射到提出声明的用户以及声明的时间。
+        Proofs: map hasher(blake2_128_concat) Vec<u8> => (T::AccountId, T::BlockNumber);
+    }
+}
+
+// Pallets use events to inform users when important changes are made.
+// https://substrate.dev/docs/en/knowledgebase/runtime/events
+decl_event!(
+	pub enum Event<T> where AccountId = <T as frame_system::Config>::AccountId {
+		/// Event documentation should end with an array that provides descriptive names for event
+		/// Event emitted when a proof has been claimed. [who, claim]
+        ClaimCreated(AccountId, Vec<u8>),
+        /// Event emitted when a claim is revoked by the owner. [who, claim]
+        ClaimRevoked(AccountId, Vec<u8>),
+
+        ClaimTransfered(AccountId, AccountId, Vec<u8>),
+	}
+);
+
+// Errors inform users that something went wrong.
+decl_error! {
+	pub enum Error for Module<T: Config> {
+		/// The proof has already been claimed.
+        ProofAlreadyClaimed,
+        /// 该证明不存在，因此它不能被撤销
+        NoSuchProof,
+        /// 该证明已经被另一个账号声明，因此它不能被撤销
+        NotProofOwner,
+
+        ClaimNotExist,
+	}
+}
+
+// Dispatchable functions allows users to interact with the pallet and invoke state changes.
+// These functions materialize as "extrinsics", which are often compared to transactions.
+// Dispatchable functions must be annotated with a weight and must return a DispatchResult.
+// 可调用函数允许用户与模块交互并调用状态更改。
+// 这些函数将实现为“Extrinsics”，它经常被拿来和交易做对比。
+// 可调用函数必须标注 Weight 并返回调用结果。
+decl_module! {
+    pub struct Module<T: Config> for enum Call where origin: T::Origin {
+        // Errors must be initialized if they are used by the pallet.
+        type Error = Error<T>;
+
+        // 事件必须被初始化，如果它们被模块所使用。
+        fn deposit_event() = default;
+
+        /// 允许用户队未声明的证明拥有所有权
+        #[weight = 10_000]
+        fn create_claim(origin, proof: Vec<u8>) {
+            // 检查 extrinsic 是否签名并获得签名者
+            // 如果 extrinsic 未签名，此函数将返回一个错误。
+            // https://substrate.dev/docs/en/knowledgebase/runtime/origin
+            let sender = ensure_signed(origin)?;
+
+            // 校验指定的证明是否被声明
+            ensure!(!Proofs::<T>::contains_key(&proof), Error::<T>::ProofAlreadyClaimed);
+
+            // 从 FRAME 系统模块中获取区块号.
+            let current_block = <frame_system::Module<T>>::block_number();
+
+            // 存储证明：发送人与区块号
+            Proofs::<T>::insert(&proof, (&sender, current_block));
+
+            // 声明创建后，发送事件
+            Self::deposit_event(RawEvent::ClaimCreated(sender, proof));
+        }
+
+        /// 允许证明所有者撤回声明
+        #[weight = 10_000]
+        fn revoke_claim(origin, proof: Vec<u8>) {
+            //  检查 extrinsic 是否签名并获得签名者
+            // 如果 extrinsic 未签名，此函数将返回一个错误。
+            // https://substrate.dev/docs/en/knowledgebase/runtime/origin
+            let sender = ensure_signed(origin)?;
+
+            // 校验指定的证明是否被声明
+            ensure!(Proofs::<T>::contains_key(&proof), Error::<T>::NoSuchProof);
+
+            // 获取声明的所有者
+            let (owner, _) = Proofs::<T>::get(&proof);
+
+            // 验证当前的调用者是证声明的所有者
+            ensure!(sender == owner, Error::<T>::NotProofOwner);
+
+            // 从存储中移除声明
+            Proofs::<T>::remove(&proof);
+
+            // 声明抹掉后，发送事件
+            Self::deposit_event(RawEvent::ClaimRevoked(sender, proof));
+        }
+
+        // 交换存证
+        #[weight = 10_000]
+		pub fn transfer_claim(origin, claim: Vec<u8>, to: T::AccountId, ) -> DispatchResult {
+            //发送方
+			let sender = ensure_signed(origin)?;
+            //判断claim是否存在
+			ensure!(Proofs::<T>::contains_key(&claim), Error::<T>::ClaimNotExist);
+            //提取所有者及块
+			let (owner, block_number) = Proofs::<T>::get(&claim);
+            //所有者是否存在
+			ensure!(owner == sender, Error::<T>::NotProofOwner);
+            //删除
+			Proofs::<T>::remove(&claim);
+            //插入到接受者
+			Proofs::<T>::insert(&claim, (to.clone(), block_number));
+            //声明并发送
+			Self::deposit_event(RawEvent::ClaimTransfered(sender, to, claim));
+
+			Ok(())
+		}
+    }
+}
\ No newline at end of file

pallets/poe/src/mock.rs

+use crate as pallet_template;
+use sp_core::H256;
+use frame_support::parameter_types;
+use sp_runtime::{
+	traits::{BlakeTwo256, IdentityLookup}, testing::Header,
+};
+use frame_system as system;
+
+type UncheckedExtrinsic = frame_system::mocking::MockUncheckedExtrinsic<Test>;
+type Block = frame_system::mocking::MockBlock<Test>;
+
+// Configure a mock runtime to test the pallet.
+frame_support::construct_runtime!(
+	pub enum Test where
+		Block = Block,
+		NodeBlock = Block,
+		UncheckedExtrinsic = UncheckedExtrinsic,
+	{
+		System: frame_system::{Module, Call, Config, Storage, Event<T>},
+		TemplateModule: pallet_template::{Module, Call, Storage, Event<T>},
+	}
+);
+
+parameter_types! {
+	pub const BlockHashCount: u64 = 250;
+	pub const SS58Prefix: u8 = 42;
+}
+
+impl system::Config for Test {
+	type BaseCallFilter = ();
+	type BlockWeights = ();
+	type BlockLength = ();
+	type DbWeight = ();
+	type Origin = Origin;
+	type Call = Call;
+	type Index = u64;
+	type BlockNumber = u64;
+	type Hash = H256;
+	type Hashing = BlakeTwo256;
+	type AccountId = u64;
+	type Lookup = IdentityLookup<Self::AccountId>;
+	type Header = Header;
+	type Event = Event;
+	type BlockHashCount = BlockHashCount;
+	type Version = ();
+	type PalletInfo = PalletInfo;
+	type AccountData = ();
+	type OnNewAccount = ();
+	type OnKilledAccount = ();
+	type SystemWeightInfo = ();
+	type SS58Prefix = SS58Prefix;
+}
+
+impl pallet_template::Config for Test {
+	type Event = Event;
+}
+
+// Build genesis storage according to the mock runtime.
+pub fn new_test_ext() -> sp_io::TestExternalities {
+	system::GenesisConfig::default().build_storage::<Test>().unwrap().into()
+}

pallets/poe/src/tests.rs

+use crate::{Error, mock::*};
+use frame_support::{assert_ok, assert_noop};
+
+// #[test]
+// fn it_works_for_default_value() {
+// 	new_test_ext().execute_with(|| {
+// 		// Dispatch a signed extrinsic.
+// 		assert_ok!(TemplateModule::do_something(Origin::signed(1), 42));
+// 		// Read pallet storage and assert an expected result.
+// 		assert_eq!(TemplateModule::something(), Some(42));
+// 	});
+// }
+
+// #[test]
+// fn correct_error_for_none_value() {
+// 	new_test_ext().execute_with(|| {
+// 		// Ensure the expected error is thrown when no value is present.
+// 		assert_noop!(
+// 			TemplateModule::cause_error(Origin::signed(1)),
+// 			Error::<Test>::NoneValue
+// 		);
+// 	});
+// }

pallets/template/Cargo.toml

+[package]
+authors = ['Substrate DevHub <https://github.com/substrate-developer-hub>']
+description = 'FRAME pallet template for defining custom runtime logic.'
+edition = '2018'
+homepage = 'https://substrate.dev'
+license = 'Unlicense'
+name = 'pallet-template'
+repository = 'https://github.com/substrate-developer-hub/substrate-node-template/'
+version = '3.0.0'
+
+[package.metadata.docs.rs]
+targets = ['x86_64-unknown-linux-gnu']
+
+# alias "parity-scale-code" to "codec"
+[dependencies.codec]
+default-features = false
+features = ['derive']
+package = 'parity-scale-codec'
+version = '2.0.0'
+
+[dependencies]
+frame-support = { default-features = false, version = '3.0.0' }
+frame-system = { default-features = false, version = '3.0.0' }
+
+[dev-dependencies]
+serde = { version = "1.0.119" }
+sp-core = { default-features = false, version = '3.0.0' }
+sp-io = { default-features = false, version = '3.0.0' }
+sp-runtime = { default-features = false, version = '3.0.0' }
+
+[features]
+default = ['std']
+std = [
+    'codec/std',
+    'frame-support/std',
+    'frame-system/std',
+]

pallets/template/src/lib.rs

+#![cfg_attr(not(feature = "std"), no_std)]
+
+/// Edit this file to define custom logic or remove it if it is not needed.
+/// Learn more about FRAME and the core library of Substrate FRAME pallets:
+/// https://substrate.dev/docs/en/knowledgebase/runtime/frame
+
+use frame_support::{decl_module, decl_storage, decl_event, decl_error, dispatch, traits::Get};
+use frame_system::ensure_signed;
+
+#[cfg(test)]
+mod mock;
+
+#[cfg(test)]
+mod tests;
+
+/// Configure the pallet by specifying the parameters and types on which it depends.
+pub trait Config: frame_system::Config {
+	/// Because this pallet emits events, it depends on the runtime's definition of an event.
+	type Event: From<Event<Self>> + Into<<Self as frame_system::Config>::Event>;
+}
+
+// The pallet's runtime storage items.
+// https://substrate.dev/docs/en/knowledgebase/runtime/storage
+decl_storage! {
+	// A unique name is used to ensure that the pallet's storage items are isolated.
+	// This name may be updated, but each pallet in the runtime must use a unique name.
+	// ---------------------------------vvvvvvvvvvvvvv
+	trait Store for Module<T: Config> as TemplateModule {
+		// Learn more about declaring storage items:
+		// https://substrate.dev/docs/en/knowledgebase/runtime/storage#declaring-storage-items
+		Something get(fn something): Option<u32>;
+	}
+}
+
+// Pallets use events to inform users when important changes are made.
+// https://substrate.dev/docs/en/knowledgebase/runtime/events
+decl_event!(
+	pub enum Event<T> where AccountId = <T as frame_system::Config>::AccountId {
+		/// Event documentation should end with an array that provides descriptive names for event
+		/// parameters. [something, who]
+		SomethingStored(u32, AccountId),
+	}
+);
+
+// Errors inform users that something went wrong.
+decl_error! {
+	pub enum Error for Module<T: Config> {
+		/// Error names should be descriptive.
+		NoneValue,
+		/// Errors should have helpful documentation associated with them.
+		StorageOverflow,
+	}
+}
+
+// Dispatchable functions allows users to interact with the pallet and invoke state changes.
+// These functions materialize as "extrinsics", which are often compared to transactions.
+// Dispatchable functions must be annotated with a weight and must return a DispatchResult.
+decl_module! {
+	pub struct Module<T: Config> for enum Call where origin: T::Origin {
+		// Errors must be initialized if they are used by the pallet.
+		type Error = Error<T>;
+
+		// Events must be initialized if they are used by the pallet.
+		fn deposit_event() = default;
+
+		/// An example dispatchable that takes a singles value as a parameter, writes the value to
+		/// storage and emits an event. This function must be dispatched by a signed extrinsic.
+		#[weight = 10_000 + T::DbWeight::get().writes(1)]
+		pub fn do_something(origin, something: u32) -> dispatch::DispatchResult {
+			// Check that the extrinsic was signed and get the signer.
+			// This function will return an error if the extrinsic is not signed.
+			// https://substrate.dev/docs/en/knowledgebase/runtime/origin
+			let who = ensure_signed(origin)?;
+
+			// Update storage.
+			Something::put(something);
+
+			// Emit an event.
+			Self::deposit_event(RawEvent::SomethingStored(something, who));
+			// Return a successful DispatchResult
+			Ok(())
+		}
+
+		/// An example dispatchable that may throw a custom error.
+		#[weight = 10_000 + T::DbWeight::get().reads_writes(1,1)]
+		pub fn cause_error(origin) -> dispatch::DispatchResult {
+			let _who = ensure_signed(origin)?;
+
+			// Read a value from storage.
+			match Something::get() {
+				// Return an error if the value has not been set.
+				None => Err(Error::<T>::NoneValue)?,
+				Some(old) => {
+					// Increment the value read from storage; will error in the event of overflow.
+					let new = old.checked_add(1).ok_or(Error::<T>::StorageOverflow)?;
+					// Update the value in storage with the incremented result.
+					Something::put(new);
+					Ok(())
+				},
+			}
+		}
+	}
+}

pallets/template/src/mock.rs

+use crate as pallet_template;
+use sp_core::H256;
+use frame_support::parameter_types;
+use sp_runtime::{
+	traits::{BlakeTwo256, IdentityLookup}, testing::Header,
+};
+use frame_system as system;
+
+type UncheckedExtrinsic = frame_system::mocking::MockUncheckedExtrinsic<Test>;
+type Block = frame_system::mocking::MockBlock<Test>;
+
+// Configure a mock runtime to test the pallet.
+frame_support::construct_runtime!(
+	pub enum Test where
+		Block = Block,
+		NodeBlock = Block,
+		UncheckedExtrinsic = UncheckedExtrinsic,
+	{
+		System: frame_system::{Module, Call, Config, Storage, Event<T>},
+		TemplateModule: pallet_template::{Module, Call, Storage, Event<T>},
+	}
+);
+
+parameter_types! {
+	pub const BlockHashCount: u64 = 250;
+	pub const SS58Prefix: u8 = 42;
+}
+
+impl system::Config for Test {
+	type BaseCallFilter = ();
+	type BlockWeights = ();
+	type BlockLength = ();
+	type DbWeight = ();
+	type Origin = Origin;
+	type Call = Call;
+	type Index = u64;
+	type BlockNumber = u64;
+	type Hash = H256;
+	type Hashing = BlakeTwo256;
+	type AccountId = u64;
+	type Lookup = IdentityLookup<Self::AccountId>;
+	type Header = Header;
+	type Event = Event;
+	type BlockHashCount = BlockHashCount;
+	type Version = ();
+	type PalletInfo = PalletInfo;
+	type AccountData = ();
+	type OnNewAccount = ();
+	type OnKilledAccount = ();
+	type SystemWeightInfo = ();
+	type SS58Prefix = SS58Prefix;
+}
+
+impl pallet_template::Config for Test {
+	type Event = Event;
+}
+
+// Build genesis storage according to the mock runtime.
+pub fn new_test_ext() -> sp_io::TestExternalities {
+	system::GenesisConfig::default().build_storage::<Test>().unwrap().into()
+}

pallets/template/src/tests.rs

+use crate::{Error, mock::*};
+use frame_support::{assert_ok, assert_noop};
+
+#[test]
+fn it_works_for_default_value() {
+	new_test_ext().execute_with(|| {
+		// Dispatch a signed extrinsic.
+		assert_ok!(TemplateModule::do_something(Origin::signed(1), 42));
+		// Read pallet storage and assert an expected result.
+		assert_eq!(TemplateModule::something(), Some(42));
+	});
+}
+
+#[test]
+fn correct_error_for_none_value() {
+	new_test_ext().execute_with(|| {
+		// Ensure the expected error is thrown when no value is present.
+		assert_noop!(
+			TemplateModule::cause_error(Origin::signed(1)),
+			Error::<Test>::NoneValue
+		);
+	});
+}

runtime/Cargo.toml

+[package]
+authors = ['Substrate DevHub <https://github.com/substrate-developer-hub>']
+edition = '2018'
+homepage = 'https://substrate.dev'
+license = 'Unlicense'
+name = 'node-template-runtime'
+repository = 'https://github.com/substrate-developer-hub/substrate-node-template/'
+version = '3.0.0'
+
+[package.metadata.docs.rs]
+targets = ['x86_64-unknown-linux-gnu']
+
+[build-dependencies]
+substrate-wasm-builder = '4.0.0'
+
+# alias "parity-scale-code" to "codec"
+[dependencies.codec]
+default-features = false
+features = ['derive']
+package = 'parity-scale-codec'
+version = '2.0.0'
+
+[dependencies]
+hex-literal = { optional = true, version = '0.3.1' }
+serde = { features = ['derive'], optional = true, version = '1.0.119' }
+
+# local dependencies
+pallet-template = { path = '../pallets/template', default-features = false, version = '3.0.0' }
+pallet-poe = { path = '../pallets/poe', default-features = false, version = '3.0.0' }
+
+# Substrate dependencies
+frame-benchmarking = { default-features = false, optional = true, version = '3.0.0' }
+frame-executive = { default-features = false, version = '3.0.0' }
+frame-support = { default-features = false, version = '3.0.0' }
+frame-system = { default-features = false, version = '3.0.0' }
+frame-system-benchmarking = { default-features = false, optional = true, version = '3.0.0' }
+frame-system-rpc-runtime-api = { default-features = false, version = '3.0.0' }
+pallet-aura = { default-features = false, version = '3.0.0' }
+pallet-balances = { default-features = false, version = '3.0.0' }
+pallet-grandpa = { default-features = false, version = '3.0.0' }
+pallet-randomness-collective-flip = { default-features = false, version = '3.0.0' }
+pallet-sudo = { default-features = false, version = '3.0.0' }
+pallet-timestamp = { default-features = false, version = '3.0.0' }
+pallet-transaction-payment = { default-features = false, version = '3.0.0' }
+pallet-transaction-payment-rpc-runtime-api = { default-features = false, version = '3.0.0' }
+sp-api = { default-features = false, version = '3.0.0' }
+sp-block-builder = { default-features = false, version = '3.0.0' }
+sp-consensus-aura = { default-features = false, version = '0.9.0' }
+sp-core = { default-features = false, version = '3.0.0' }
+sp-inherents = { default-features = false, version = '3.0.0' }
+sp-offchain = { default-features = false, version = '3.0.0' }
+sp-runtime = { default-features = false, version = '3.0.0' }
+sp-session = { default-features = false, version = '3.0.0' }
+sp-std = { default-features = false, version = '3.0.0' }
+sp-transaction-pool = { default-features = false, version = '3.0.0' }
+sp-version = { default-features = false, version = '3.0.0' }
+
+[features]
+default = ['std']
+runtime-benchmarks = [
+    'hex-literal',
+    'frame-benchmarking',
+    'frame-support/runtime-benchmarks',
+    'frame-system-benchmarking',
+    'frame-system/runtime-benchmarks',
+    'pallet-balances/runtime-benchmarks',
+    'pallet-timestamp/runtime-benchmarks',
+    'sp-runtime/runtime-benchmarks',
+]
+std = [
+    'codec/std',
+    'serde',
+    'frame-executive/std',
+    'frame-support/std',
+    'frame-system/std',
+    'frame-system-rpc-runtime-api/std',
+    'pallet-aura/std',
+    'pallet-balances/std',
+    'pallet-grandpa/std',
+    'pallet-randomness-collective-flip/std',
+    'pallet-sudo/std',
+    'pallet-template/std',
+    'pallet-poe/std',
+    'pallet-timestamp/std',
+    'pallet-transaction-payment/std',
+    'pallet-transaction-payment-rpc-runtime-api/std',
+    'sp-api/std',
+    'sp-block-builder/std',
+    'sp-consensus-aura/std',
+    'sp-core/std',
+    'sp-inherents/std',
+    'sp-offchain/std',
+    'sp-runtime/std',
+    'sp-session/std',
+    'sp-std/std',
+    'sp-transaction-pool/std',
+    'sp-version/std',
+]

runtime/build.rs

+use substrate_wasm_builder::WasmBuilder;
+
+fn main() {
+    WasmBuilder::new()
+        .with_current_project()
+        .import_memory()
+        .export_heap_base()
+        .build()
+}

runtime/src/lib.rs

+#![cfg_attr(not(feature = "std"), no_std)]
+// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 256.
+#![recursion_limit="256"]
+
+// Make the WASM binary available.
+#[cfg(feature = "std")]
+include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
+
+use sp_std::prelude::*;
+use sp_core::{crypto::KeyTypeId, OpaqueMetadata};
+use sp_runtime::{
+	ApplyExtrinsicResult, generic, create_runtime_str, impl_opaque_keys, MultiSignature,
+	transaction_validity::{TransactionValidity, TransactionSource},
+};
+use sp_runtime::traits::{
+	AccountIdLookup, BlakeTwo256, Block as BlockT, Verify, IdentifyAccount, NumberFor,
+};
+use sp_api::impl_runtime_apis;
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+use pallet_grandpa::{AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList};
+use pallet_grandpa::fg_primitives;
+use sp_version::RuntimeVersion;
+#[cfg(feature = "std")]
+use sp_version::NativeVersion;
+
+// A few exports that help ease life for downstream crates.
+#[cfg(any(feature = "std", test))]
+pub use sp_runtime::BuildStorage;
+pub use pallet_timestamp::Call as TimestampCall;
+pub use pallet_balances::Call as BalancesCall;
+pub use sp_runtime::{Permill, Perbill};
+pub use frame_support::{
+	construct_runtime, parameter_types, StorageValue,
+	traits::{KeyOwnerProofSystem, Randomness},
+	weights::{
+		Weight, IdentityFee,
+		constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},
+	},
+};
+use pallet_transaction_payment::CurrencyAdapter;
+
+/// Import the template pallet.
+pub use pallet_template;
+
+pub use pallet_poe;
+
+/// An index to a block.
+pub type BlockNumber = u32;
+
+/// Alias to 512-bit hash when used in the context of a transaction signature on the chain.
+pub type Signature = MultiSignature;
+
+/// Some way of identifying an account on the chain. We intentionally make it equivalent
+/// to the public key of our transaction signing scheme.
+pub type AccountId = <<Signature as Verify>::Signer as IdentifyAccount>::AccountId;
+
+/// The type for looking up accounts. We don't expect more than 4 billion of them, but you
+/// never know...
+pub type AccountIndex = u32;
+
+/// Balance of an account.
+pub type Balance = u128;
+
+/// Index of a transaction in the chain.
+pub type Index = u32;
+
+/// A hash of some data used by the chain.
+pub type Hash = sp_core::H256;
+
+/// Digest item type.
+pub type DigestItem = generic::DigestItem<Hash>;
+
+/// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
+/// the specifics of the runtime. They can then be made to be agnostic over specific formats
+/// of data like extrinsics, allowing for them to continue syncing the network through upgrades
+/// to even the core data structures.
+pub mod opaque {
+	use super::*;
+
+	pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;
+
+	/// Opaque block header type.
+	pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
+	/// Opaque block type.
+	pub type Block = generic::Block<Header, UncheckedExtrinsic>;
+	/// Opaque block identifier type.
+	pub type BlockId = generic::BlockId<Block>;
+
+	impl_opaque_keys! {
+		pub struct SessionKeys {
+			pub aura: Aura,
+			pub grandpa: Grandpa,
+		}
+	}
+}
+
+pub const VERSION: RuntimeVersion = RuntimeVersion {
+	spec_name: create_runtime_str!("node-template"),
+	impl_name: create_runtime_str!("node-template"),
+	authoring_version: 1,
+	spec_version: 100,
+	impl_version: 1,
+	apis: RUNTIME_API_VERSIONS,
+	transaction_version: 1,
+};
+
+
+/// This determines the average expected block time that we are targeting.
+/// Blocks will be produced at a minimum duration defined by `SLOT_DURATION`.
+/// `SLOT_DURATION` is picked up by `pallet_timestamp` which is in turn picked
+/// up by `pallet_aura` to implement `fn slot_duration()`.
+///
+/// Change this to adjust the block time.
+pub const MILLISECS_PER_BLOCK: u64 = 6000;
+
+pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;
+
+// Time is measured by number of blocks.
+pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
+pub const HOURS: BlockNumber = MINUTES * 60;
+pub const DAYS: BlockNumber = HOURS * 24;
+
+/// The version information used to identify this runtime when compiled natively.
+#[cfg(feature = "std")]
+pub fn native_version() -> NativeVersion {
+	NativeVersion {
+		runtime_version: VERSION,
+		can_author_with: Default::default(),
+	}
+}
+
+const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
+
+parameter_types! {
+	pub const Version: RuntimeVersion = VERSION;
+	pub const BlockHashCount: BlockNumber = 2400;
+	/// We allow for 2 seconds of compute with a 6 second average block time.
+	pub BlockWeights: frame_system::limits::BlockWeights = frame_system::limits::BlockWeights
+		::with_sensible_defaults(2 * WEIGHT_PER_SECOND, NORMAL_DISPATCH_RATIO);
+	pub BlockLength: frame_system::limits::BlockLength = frame_system::limits::BlockLength
+		::max_with_normal_ratio(5 * 1024 * 1024, NORMAL_DISPATCH_RATIO);
+	pub const SS58Prefix: u8 = 42;
+}
+
+// Configure FRAME pallets to include in runtime.
+
+impl frame_system::Config for Runtime {
+	/// The basic call filter to use in dispatchable.
+	type BaseCallFilter = ();
+	/// Block & extrinsics weights: base values and limits.
+	type BlockWeights = BlockWeights;
+	/// The maximum length of a block (in bytes).
+	type BlockLength = BlockLength;
+	/// The identifier used to distinguish between accounts.
+	type AccountId = AccountId;
+	/// The aggregated dispatch type that is available for extrinsics.
+	type Call = Call;
+	/// The lookup mechanism to get account ID from whatever is passed in dispatchers.
+	type Lookup = AccountIdLookup<AccountId, ()>;
+	/// The index type for storing how many extrinsics an account has signed.
+	type Index = Index;
+	/// The index type for blocks.
+	type BlockNumber = BlockNumber;
+	/// The type for hashing blocks and tries.
+	type Hash = Hash;
+	/// The hashing algorithm used.
+	type Hashing = BlakeTwo256;
+	/// The header type.
+	type Header = generic::Header<BlockNumber, BlakeTwo256>;
+	/// The ubiquitous event type.
+	type Event = Event;
+	/// The ubiquitous origin type.
+	type Origin = Origin;
+	/// Maximum number of block number to block hash mappings to keep (oldest pruned first).
+	type BlockHashCount = BlockHashCount;
+	/// The weight of database operations that the runtime can invoke.
+	type DbWeight = RocksDbWeight;
+	/// Version of the runtime.
+	type Version = Version;
+	/// Converts a module to the index of the module in `construct_runtime!`.
+	///
+	/// This type is being generated by `construct_runtime!`.
+	type PalletInfo = PalletInfo;
+	/// What to do if a new account is created.
+	type OnNewAccount = ();
+	/// What to do if an account is fully reaped from the system.
+	type OnKilledAccount = ();
+	/// The data to be stored in an account.
+	type AccountData = pallet_balances::AccountData<Balance>;
+	/// Weight information for the extrinsics of this pallet.
+	type SystemWeightInfo = ();
+	/// This is used as an identifier of the chain. 42 is the generic substrate prefix.
+	type SS58Prefix = SS58Prefix;
+}
+
+impl pallet_aura::Config for Runtime {
+	type AuthorityId = AuraId;
+}
+
+impl pallet_grandpa::Config for Runtime {
+	type Event = Event;
+	type Call = Call;
+
+	type KeyOwnerProofSystem = ();
+
+	type KeyOwnerProof =
+		<Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(KeyTypeId, GrandpaId)>>::Proof;
+
+	type KeyOwnerIdentification = <Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(
+		KeyTypeId,
+		GrandpaId,
+	)>>::IdentificationTuple;
+
+	type HandleEquivocation = ();
+
+	type WeightInfo = ();
+}
+
+parameter_types! {
+	pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
+}
+
+impl pallet_timestamp::Config for Runtime {
+	/// A timestamp: milliseconds since the unix epoch.
+	type Moment = u64;
+	type OnTimestampSet = Aura;
+	type MinimumPeriod = MinimumPeriod;
+	type WeightInfo = ();
+}
+
+parameter_types! {
+	pub const ExistentialDeposit: u128 = 500;
+	pub const MaxLocks: u32 = 50;
+}
+
+impl pallet_balances::Config for Runtime {
+	type MaxLocks = MaxLocks;
+	/// The type for recording an account's balance.
+	type Balance = Balance;
+	/// The ubiquitous event type.
+	type Event = Event;
+	type DustRemoval = ();
+	type ExistentialDeposit = ExistentialDeposit;
+	type AccountStore = System;
+	type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
+}
+
+parameter_types! {
+	pub const TransactionByteFee: Balance = 1;
+}
+
+impl pallet_transaction_payment::Config for Runtime {
+	type OnChargeTransaction = CurrencyAdapter<Balances, ()>;
+	type TransactionByteFee = TransactionByteFee;
+	type WeightToFee = IdentityFee<Balance>;
+	type FeeMultiplierUpdate = ();
+}
+
+impl pallet_sudo::Config for Runtime {
+	type Event = Event;
+	type Call = Call;
+}
+
+/// Configure the template pallet in pallets/template.
+impl pallet_template::Config for Runtime {
+	type Event = Event;
+}
+
+impl pallet_poe::Config for Runtime {
+	type Event = Event;
+}
+
+// Create the runtime by composing the FRAME pallets that were previously configured.
+construct_runtime!(
+	pub enum Runtime where
+		Block = Block,
+		NodeBlock = opaque::Block,
+		UncheckedExtrinsic = UncheckedExtrinsic
+	{
+		System: frame_system::{Module, Call, Config, Storage, Event<T>},
+		RandomnessCollectiveFlip: pallet_randomness_collective_flip::{Module, Call, Storage},
+		Timestamp: pallet_timestamp::{Module, Call, Storage, Inherent},
+		Aura: pallet_aura::{Module, Config<T>},
+		Grandpa: pallet_grandpa::{Module, Call, Storage, Config, Event},
+		Balances: pallet_balances::{Module, Call, Storage, Config<T>, Event<T>},
+		TransactionPayment: pallet_transaction_payment::{Module, Storage},
+		Sudo: pallet_sudo::{Module, Call, Config<T>, Storage, Event<T>},
+		// Include the custom logic from the template pallet in the runtime.
+		TemplateModule: pallet_template::{Module, Call, Storage, Event<T>},
+		PoeModule: pallet_poe::{Module, Call, Storage, Event<T>},
+	}
+);
+
+/// The address format for describing accounts.
+pub type Address = sp_runtime::MultiAddress<AccountId, ()>;
+/// Block header type as expected by this runtime.
+pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
+/// Block type as expected by this runtime.
+pub type Block = generic::Block<Header, UncheckedExtrinsic>;
+/// A Block signed with a Justification
+pub type SignedBlock = generic::SignedBlock<Block>;
+/// BlockId type as expected by this runtime.
+pub type BlockId = generic::BlockId<Block>;
+/// The SignedExtension to the basic transaction logic.
+pub type SignedExtra = (
+	frame_system::CheckSpecVersion<Runtime>,
+	frame_system::CheckTxVersion<Runtime>,
+	frame_system::CheckGenesis<Runtime>,
+	frame_system::CheckEra<Runtime>,
+	frame_system::CheckNonce<Runtime>,
+	frame_system::CheckWeight<Runtime>,
+	pallet_transaction_payment::ChargeTransactionPayment<Runtime>
+);
+/// Unchecked extrinsic type as expected by this runtime.
+pub type UncheckedExtrinsic = generic::UncheckedExtrinsic<Address, Call, Signature, SignedExtra>;
+/// Extrinsic type that has already been checked.
+pub type CheckedExtrinsic = generic::CheckedExtrinsic<AccountId, Call, SignedExtra>;
+/// Executive: handles dispatch to the various modules.
+pub type Executive = frame_executive::Executive<
+	Runtime,
+	Block,
+	frame_system::ChainContext<Runtime>,
+	Runtime,
+	AllModules,
+>;
+
+impl_runtime_apis! {
+	impl sp_api::Core<Block> for Runtime {
+		fn version() -> RuntimeVersion {
+			VERSION
+		}
+
+		fn execute_block(block: Block) {
+			Executive::execute_block(block)
+		}
+
+		fn initialize_block(header: &<Block as BlockT>::Header) {
+			Executive::initialize_block(header)
+		}
+	}
+
+	impl sp_api::Metadata<Block> for Runtime {
+		fn metadata() -> OpaqueMetadata {
+			Runtime::metadata().into()
+		}
+	}
+
+	impl sp_block_builder::BlockBuilder<Block> for Runtime {
+		fn apply_extrinsic(extrinsic: <Block as BlockT>::Extrinsic) -> ApplyExtrinsicResult {
+			Executive::apply_extrinsic(extrinsic)
+		}
+
+		fn finalize_block() -> <Block as BlockT>::Header {
+			Executive::finalize_block()
+		}
+
+		fn inherent_extrinsics(data: sp_inherents::InherentData) ->
+			Vec<<Block as BlockT>::Extrinsic> {
+			data.create_extrinsics()
+		}
+
+		fn check_inherents(
+			block: Block,
+			data: sp_inherents::InherentData,
+		) -> sp_inherents::CheckInherentsResult {
+			data.check_extrinsics(&block)
+		}
+
+		fn random_seed() -> <Block as BlockT>::Hash {
+			RandomnessCollectiveFlip::random_seed()
+		}
+	}
+
+	impl sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block> for Runtime {
+		fn validate_transaction(
+			source: TransactionSource,
+			tx: <Block as BlockT>::Extrinsic,
+		) -> TransactionValidity {
+			Executive::validate_transaction(source, tx)
+		}
+	}
+
+	impl sp_offchain::OffchainWorkerApi<Block> for Runtime {
+		fn offchain_worker(header: &<Block as BlockT>::Header) {
+			Executive::offchain_worker(header)
+		}
+	}
+
+	impl sp_consensus_aura::AuraApi<Block, AuraId> for Runtime {
+		fn slot_duration() -> u64 {
+			Aura::slot_duration()
+		}
+
+		fn authorities() -> Vec<AuraId> {
+			Aura::authorities()
+		}
+	}
+
+	impl sp_session::SessionKeys<Block> for Runtime {
+		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
+			opaque::SessionKeys::generate(seed)
+		}
+
+		fn decode_session_keys(
+			encoded: Vec<u8>,
+		) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
+			opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
+		}
+	}
+
+	impl fg_primitives::GrandpaApi<Block> for Runtime {
+		fn grandpa_authorities() -> GrandpaAuthorityList {
+			Grandpa::grandpa_authorities()
+		}
+
+		fn submit_report_equivocation_unsigned_extrinsic(
+			_equivocation_proof: fg_primitives::EquivocationProof<
+				<Block as BlockT>::Hash,
+				NumberFor<Block>,
+			>,
+			_key_owner_proof: fg_primitives::OpaqueKeyOwnershipProof,
+		) -> Option<()> {
+			None
+		}
+
+		fn generate_key_ownership_proof(
+			_set_id: fg_primitives::SetId,
+			_authority_id: GrandpaId,
+		) -> Option<fg_primitives::OpaqueKeyOwnershipProof> {
+			// NOTE: this is the only implementation possible since we've
+			// defined our key owner proof type as a bottom type (i.e. a type
+			// with no values).
+			None
+		}
+	}
+
+	impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Index> for Runtime {
+		fn account_nonce(account: AccountId) -> Index {
+			System::account_nonce(account)
+		}
+	}
+
+	impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<Block, Balance>
+		for Runtime {
+		fn query_info(
+			uxt: <Block as BlockT>::Extrinsic,
+			len: u32,
+		) -> pallet_transaction_payment_rpc_runtime_api::RuntimeDispatchInfo<Balance> {
+			TransactionPayment::query_info(uxt, len)
+		}
+		fn query_fee_details(
+			uxt: <Block as BlockT>::Extrinsic,
+			len: u32,
+		) -> pallet_transaction_payment::FeeDetails<Balance> {
+			TransactionPayment::query_fee_details(uxt, len)
+		}
+	}
+
+	#[cfg(feature = "runtime-benchmarks")]
+	impl frame_benchmarking::Benchmark<Block> for Runtime {
+		fn dispatch_benchmark(
+			config: frame_benchmarking::BenchmarkConfig
+		) -> Result<Vec<frame_benchmarking::BenchmarkBatch>, sp_runtime::RuntimeString> {
+			use frame_benchmarking::{Benchmarking, BenchmarkBatch, add_benchmark, TrackedStorageKey};
+
+			use frame_system_benchmarking::Module as SystemBench;
+			impl frame_system_benchmarking::Config for Runtime {}
+
+			let whitelist: Vec<TrackedStorageKey> = vec![
+				// Block Number
+				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef702a5c1b19ab7a04f536c519aca4983ac")
+					.to_vec().into(),
+				// Total Issuance
+				hex_literal::hex!("c2261276cc9d1f8598ea4b6a74b15c2f57c875e4cff74148e4628f264b974c80")
+					.to_vec().into(),
+				// Execution Phase
+				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef7ff553b5a9862a516939d82b3d3d8661a")
+					.to_vec().into(),
+				// Event Count
+				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef70a98fdbe9ce6c55837576c60c7af3850")
+					.to_vec().into(),
+				// System Events
+				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef780d41e5e16056765bc8461851072c9d7")
+					.to_vec().into(),
+			];
+
+			let mut batches = Vec::<BenchmarkBatch>::new();
+			let params = (&config, &whitelist);
+
+			add_benchmark!(params, batches, frame_system, SystemBench::<Runtime>);
+			add_benchmark!(params, batches, pallet_balances, Balances);
+			add_benchmark!(params, batches, pallet_timestamp, Timestamp);
+
+			if batches.is_empty() { return Err("Benchmark not found for this pallet.".into()) }
+			Ok(batches)
+		}
+	}
+}

scripts/docker_run.sh

+#!/usr/bin/env bash
+
+set -e
+
+echo "*** Start Substrate node template ***"
+
+cd $(dirname ${BASH_SOURCE[0]})/..
+
+docker-compose down --remove-orphans
+docker-compose run --rm --service-ports dev $@
\ No newline at end of file