> For the complete documentation index, see [llms.txt](https://tychi.gitbook.io/tychi-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tychi.gitbook.io/tychi-whitepaper/security-and-idenitity/decentralized-identity-wallet-did.md).

# Decentralized Identity Wallet (DID)

### ✅ DID Standards

Tychi adheres to globally recognized DID frameworks such as W3C specifications. Each DID is self-sovereign and cryptographically bound to the user.

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### 🔐 Cryptographic Proofs

We leverage **Elliptic Curve Cryptography (ECC)** to generate and verify proofs of ownership. This ensures identity integrity, tamper resistance, and verifiability.

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### 🪪 Verifiable Credentials (VCs)

Users can issue and present credentials (e.g., degrees, licenses) directly from their wallet.

* **Self-signed** using private keys
* No third-party validation required
* Used in DApp interactions and verification workflows

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### 🧠 Key Management

* Hierarchical Deterministic (HD) wallets securely manage identity keys.
* Integrated social recovery and multi-sig access strengthen key resilience.

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### 🔓 User Authentication

Combines three-factor authentication (3FA):

* Biometric verification (face/fingerprint)
* Password/passphrase
* OTP-based device login\
  Ensures only verified users can access identity data.

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### 🌐 Web3 Integration

* DApps can request identity verification directly from the wallet.
* Smart contract–based attestations streamline onboarding across platforms.

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### 🛡️ Privacy Features

* **Zero-Knowledge Proofs (ZKPs)** allow users to prove identity traits without revealing full details.
* Users maintain full control over what is shared and with whom.

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### 🧭 Example Workflow

1. User creates a DID and issues verifiable credentials via Tychi Wallet.
2. A DApp requests verification of a credential.
3. The DApp queries the blockchain to validate the associated DID.
4. Tychi verifies and returns a ZKP-based attestation.