# EW-DOS Technology Components 2023

- [EW-DOS Overview](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/ew-dos-overview.md)
- [Worker Nodes](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/worker-nodes.md)
- [Worker Node Process Diagrams](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/worker-nodes/worker-node-network-architecture.md)
- [Worker Node Architecture](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/worker-nodes/worker-node-patterns.md)
- [Worker Node Guides](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/worker-nodes/worker-node-guides.md)
- [Deploy Worker Nodes](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/worker-nodes/worker-node-guides/deploy-worker-nodes.md)
- [Customize Worker Logic](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/worker-nodes/worker-node-guides/customize-worker-logic.md)
- [Identity and Access Management (IAM)](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam.md)
- [IAM Guides](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/iam-guides.md)
- [Implement an SSI Hub instance](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/iam-guides/implement-an-ssi-hub.md)
- [Verifiable Credential API](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/iam-guides/verifiable-credential-api.md)
- [Sign-In with Ethereum](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/iam-guides/sign-in-with-ethereum.md)
- [Using Switchboard](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/iam-guides/using-switchboard.md): This is a walk-through covering the main functionality of the system released to date. It assumes you already have a wallet in either a WalletConnect-compatible mobile application or MetaMask browser
- [Switchboard Transaction Cost Estimates](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/iam-guides/using-switchboard/switchboard-transaction-cost-estimates.md)
- [IAM Patterns](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/patterns.md)
- [Assets as Ownable Smart Contracts](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/patterns/assets-as-ownable-smart-contracts.md)
- [Credential Lifecycle](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/patterns/credential-lifecycle.md): The credential lifecycle in the IAM stack
- [Credential Metadata](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/patterns/credential-metadata.md): Possible credential metadata
- [SSI Credential Governance using ENS Domains](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/patterns/governance.md): Governance frameworks in the IAM stack
- [IAM Libraries](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/iam-libraries.md)
- [SSI Hub](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/ssi-hub.md)
- [Switchboard Application](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/identity-and-access-management-iam/switchboard-application.md)
- [Decentralized Data Hub (DDHub)](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/decentralized-data-hub-ddhub.md)
- [DDHub Message Broker](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/decentralized-data-hub-ddhub/ddhub-message-broker.md)
- [DDHub Client Gateway](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/decentralized-data-hub-ddhub/ddhub-client-gateway.md)
- [DDHub Patterns](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/decentralized-data-hub-ddhub/ddhub-patterns.md)
- [Channels and Topics](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/decentralized-data-hub-ddhub/ddhub-patterns/channels-and-topics.md)
- [DDHub Guides](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/decentralized-data-hub-ddhub/ddhub-guides.md)
- [Green Proofs Contracts](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/green-proofs-contracts.md)
- [Energy Web X](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/energy-web-x.md)
- [The Energy Web Chain](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain.md): The Energy Web Blockchain
- [EWC Overview](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-overview.md)
- [System Architecture](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/system-architecture.md): Components that implement blockchain and consensus protocol
- [Proof-of-Authority Consensus Mechanism](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/system-architecture/proof-of-authority-consensus-mechanism.md)
- [System Contracts](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/system-architecture/system-contracts.md)
- [Name Registry](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/system-architecture/system-contracts/name-registry.md)
- [Holding Contract](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/system-architecture/system-contracts/holding-contract.md)
- [Block Reward Contract](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/system-architecture/system-contracts/block-reward-contract.md)
- [Validator-Set Contracts](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/system-architecture/system-contracts/validator-set-contract.md)
- [Validator Node Architecture](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/system-architecture/validator-node-architecture.md): Components for running a validator node and monitoring validator behavior
- [Energy Web Block Explorer](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/block-explorer.md)
- [Validator Node Installation Specifications](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/validator-node-installation-specifications.md): This page provides specifications for host environments for Volta and EWC validator nodes.
- [Volta Test Network: Validator Node Installation](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/validator-node-installation-specifications/volta-test-network-validator-node-installation.md): This page describes the steps to install a validator node on the Volta test network.
- [Energy Web Chain Governance](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/energy-web-chain-governance.md)
- [EWC Guides and Tutorials](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials.md)
- [Getting started with Energy Web Chain](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/getting-started-with-ew-dos.md)
- [Developing on the Volta Test Network and Main Network (Energy Web Chain)](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/testnet-and-mainnet.md): Blockchain networks to support test and production environments
- [Run a Local RPC Node](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/running-a-local-node.md): Run a full instance of the blockchain on your machine
- [Run RPC Node using Nethermind client](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/running-a-local-node/run-rpc-node-using-nethermind-client.md): Nethermind Client
- [Deploy a Smart Contract on Volta with Remix](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/deploy-a-smart-contract-on-volta-with-remix.md)
- [Interacting with Smart Contracts in EW-DOS](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/interacting-with-a-smart-contract.md): Using smart contracts on the Ethereum Virtual Machine
- [Set up MetaMask to interact with Energy Web Chain](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/connect-to-energy-web-chain-main-network-with-metamash.md): In this section, we'll walk through how to connect to the Energy Web blockchain, and the Volta testnet using the MetaMask browser extension.
- [Using the Ethereum Name Service](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/using-the-ethereum-name-service-ens.md): The Ethereum Name Service is available on Energy Web Chain and Volta Testnet
- [Using Oracles](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/ewc-guides-and-tutorials/using-oracles.md): Incorporate external data sources into your smart contracts
- [Energy Web Token (EWT)](https://docs.energyweb.org/legacy-documentation/ew-dos-technology-components-2023/trust-layer-energy-web-chain/energy-web-token.md): The Energy Web Chain's native token


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