feat: Blockchain learning resources

.github/workflows/.cspell/project.txt

@@ -20,4 +20,8 @@ rustc
 rustdoc
 rxdart
 surrealdb
-testnet
+testnet
+Polkadot
+sidechains
+sidechain
+Tendermint

README.md

@@ -55,6 +55,7 @@
 - [Dart](learning_resources/dart.md)
 - [Flutter](learning_resources/flutter.md)
 - [Rust](learning_resources/rust.md)
+- [Blockchain](learning_resources/blockchain.md)
 
 ## Support
 

learning_resources/blockchain.md

@@ -0,0 +1,67 @@
+# Blockchain Learning Resources
+
+- [Blockchain Learning Resources](#blockchain-learning-resources)
+  - [Bitcoin](#bitcoin)
+  - [Cardano](#cardano)
+  - [Polkadot/Substrate](#polkadotsubstrate)
+  - [Tendermint and Cosmos-SDK](#tendermint-and-cosmos-sdk)
+  - [Blockchain exercises](#blockchain-exercises)
+    - [Ethereum](#ethereum)
+
+
+## Bitcoin
+
+As a starting point for learning blockchain Bitcoin has a special place,
+it could be a good reference to understand the idea and basic concepts
+of the blockchain technology
+
+- https://developer.bitcoin.org/devguide/index.html
+
+## Cardano
+Of course as we are working primarily with the Cardano ecosystem
+some understanding how Cardano works would be beneficial
+
+- https://docs.cardano.org/
+
+
+## Polkadot/Substrate
+
+As an example of Rust developed blockchain and a great successful case of applying
+and idea of sidechains Polkadot and it's ecosystem good to know.
+Also as they have a Rust blockchain framework for building blockchains based on WASM,
+it is also great to explore in that context what we are want to build with hermes.
+
+Polkadot:
+- https://spec.polkadot.network/id-polkadot-protocol
+- https://wiki.polkadot.network/docs/general-index
+
+Substrate (renamed to polkadot-sdk):
+- https://github.com/paritytech/polkadot-sdk
+- https://docs.substrate.io
+
+## Tendermint and Cosmos-SDK
+
+As another reference of blockchain framework with applying sidechain idea but on another language, Go land.
+
+- https://tendermint.com/core/
+- https://tendermint.com/sdk/
+- https://tendermint.com/ibc/ (sidechain's protocol)
+
+## Blockchain exercises
+
+### Ethereum
+Blockchain operations:
+
+1. Install ethereum node daemon https://geth.ethereum.org/docs/getting-started/installing-geth.
+2. Take a look of all available commands to the ethereum daemon (geth) https://geth.ethereum.org/docs/fundamentals/command-line-options.
+3. Create an ethereum metamask wallet account https://metamask.io (available as an browser extension).
+5. Export private keys from metamask https://github.com/Kuzirashi/gw-gitcoin-instruction/blob/master/src/component-tutorials/5.extract.ethereum.private.key.md and import them to the ethereum daemon (geth) https://ethereum.stackexchange.com/questions/465/how-to-import-a-plain-private-key-into-geth-or-mist.
+6. Start sync of the ethereum daemon with the network, sync up to 1000 blocks (or whatever amount you want, depends on your machine performance) https://geth.ethereum.org/docs/fundamentals/sync-modes. You can run sync in whatever mode you want, but try to learn what the difference.
+7. Check your latest block (tip) on the ethereum explorer website that they are the same https://etherscan.io 
+8. (*Optionally*) Try to run mining of the ethereum block https://geth.ethereum.org/docs/fundamentals/mining (**NOTE** if you want to successfully mine the block, better to mine in the testnet, difficulty there much more less than in the mainnet).
+
+Wallet operations (all for testnet (Goerli network)):
+
+1. With already created wallet for metamask, get some free test coins https://goerlifaucet.com.
+2. Create a new wallet account (you can make it in some another wallet application https://ethereum.org/en/wallets/find-wallet/, but it is not so important, you can create just a new one in metamask).
+3. Send coins from one account to another, and check that transaction https://etherscan.io  (don't forget to change the network, by default its for mainnet, (top left button)).