> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Code Examples

> 45 canonical code examples synchronized from The Blockchain Library Knowledge Engine.

# Code Examples

**45 canonical records** · Knowledge build `70e37656b46a4379`

* [ABI Encode/Decode (Python)](/generated/v2/code-examples/abi-encode-decode-python)
* [AccessControl Role-Based Permissions](/generated/v2/code-examples/accesscontrol-role-based-permissions)
* [Anchor Program — Solana Counter](/generated/v2/code-examples/anchor-program-solana-counter)
* [Batch Read with Multicall](/generated/v2/code-examples/batch-read-multicall)
* [BIP39 Mnemonic to Key Pair (Python)](/generated/v2/code-examples/bip39-mnemonic-keypair-python)
* [Chainlink Price Feed (Solidity)](/generated/v2/code-examples/chainlink-price-feed-solidity)
* [CosmWasm Counter Contract](/generated/v2/code-examples/cosmwasm-counter-contract)
* [Deploy Contract with viem](/generated/v2/code-examples/deploy-contract-viem)
* [Dutch Auction Contract](/generated/v2/code-examples/dutch-auction-contract)
* [EIP-712 Typed Data Signing](/generated/v2/code-examples/eip-712-typed-data-signing)
* [ERC-1155 Multi-Token Contract](/generated/v2/code-examples/erc-1155-multi-token-contract)
* [ERC-20 Token Contract](/generated/v2/code-examples/erc-20-token-contract)
* [ERC-4337 Account Abstraction](/generated/v2/code-examples/erc-4337-account-abstraction)
* [ERC-4626 Tokenized Vault](/generated/v2/code-examples/erc-4626-tokenized-vault)
* [ERC-721 Enumerable NFT](/generated/v2/code-examples/erc-721-enumerable-nft)
* [ERC-721 NFT Contract](/generated/v2/code-examples/erc-721-nft-contract)
* [Estimate Gas with viem](/generated/v2/code-examples/estimate-gas-viem)
* [Gas Price Monitoring (Python)](/generated/v2/code-examples/gas-price-monitoring-python)
* [Governor Voting Contract](/generated/v2/code-examples/governor-voting-contract)
* [HD Wallet Derivation (Python)](/generated/v2/code-examples/hd-wallet-derivation-python)
* [Interact with Smart Contract using viem](/generated/v2/code-examples/interact-contract-viem)
* [IPFS Upload with Pinata](/generated/v2/code-examples/ipfs-upload-pinata)
* [Keccak256 Hashing (Python)](/generated/v2/code-examples/keccak256-hashing-python)
* [Listen to Contract Events with ethers.js](/generated/v2/code-examples/listen-contract-events-ethersjs)
* [Merkle Proof Verification (Python)](/generated/v2/code-examples/merkle-proof-verification-python)
* [Merkle Tree Whitelist](/generated/v2/code-examples/merkle-tree-whitelist)
* [Multi-Signature Wallet](/generated/v2/code-examples/multi-signature-wallet)
* [NFT Royalty Enforcement (ERC-2981)](/generated/v2/code-examples/nft-royalty-erc-2981)
* [Pausable Emergency Stop](/generated/v2/code-examples/pausable-emergency-stop)
* [Read Contract Events with ethers.js](/generated/v2/code-examples/read-contract-events-ethers)
* [Read ETH Balance with ethers.js](/generated/v2/code-examples/read-eth-balance-ethersjs)
* [Reentrancy Guard Pattern](/generated/v2/code-examples/reentrancy-guard-pattern)
* [Sign and Send Transaction (ethers.js)](/generated/v2/code-examples/sign-send-transaction-ethers)
* [Sign Message with ethers.js](/generated/v2/code-examples/sign-message-ethers)
* [Simple AMM Swap (Solidity)](/generated/v2/code-examples/simple-amm-swap-solidity)
* [Simple Staking Contract](/generated/v2/code-examples/simple-staking-contract)
* [Simple Vault Contract](/generated/v2/code-examples/simple-vault-contract)
* [Solana Program: Increment Counter](/generated/v2/code-examples/solana-increment-counter)
* [Solana Token Transfer (TypeScript)](/generated/v2/code-examples/solana-token-transfer-ts)
* [Soroban Hello World](/generated/v2/code-examples/soroban-hello-world)
* [Token Vesting Contract](/generated/v2/code-examples/token-vesting-contract)
* [UUPS Upgradeable Proxy](/generated/v2/code-examples/uups-upgradeable-proxy)
* [Vyper ERC-20 Token](/generated/v2/code-examples/vyper-erc-20-token)
* [Vyper Simple Auction](/generated/v2/code-examples/vyper-simple-auction)
* [Web3.py Event Listening](/generated/v2/code-examples/web3py-event-listening)