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Decentralized Backend

Interstellar’s architecture is built around a decentralized backend designed to manage critical authentication, transaction processing, and smart account functionality with no reliance on centralized servers or custodians. Unlike traditional wallet stacks, where security-critical logic is handled by backend APIs or cloud infrastructure, Interstellar decentralizes every sensitive operation into verifiable and tamper-resistant blockchain components.

Why Decentralization Matters​

A decentralized backend enables trustless execution of:

  • Transaction signing
  • Visual cryptography generation and validation
  • One-time garbled circuits
  • Key attestation verification
  • Recovery logic
  • Bot-resistant asset distribution

These features are embedded directly into the Interstellar blockchain runtime and, when required, supported by TEE-secured Layer 2 sidechains or MPC-based execution clusters. This ensures that no centralized server ever becomes a single point of failure or target for attackers.

Transaction Security at the Core​

Interstellar’s decentralized backend makes transaction signing one of the most secure processes available in any wallet architecture:

  • Requests are initiated by hardware-bound keys (SE-generated and attested)
  • Validation flows through a garbled circuit rendered dynamically for that session
  • The VCA token used to display validation challenges is generated and signed by the chain itself
  • Touch input or biometric verification completes the process on-device

The backend nodes validate each stage, ensuring:

  • The user was presented with accurate information
  • The device used is legitimate and bound to a secure key
  • The final signature was cryptographically authorized by the SE and verified using consensus

This level of decentralized, multi-step validation makes transaction tampering, phishing, or blind signing attempts practically impossible.

Smart Account Logic, Decentralized​

The Interstellar backend also enables advanced smart account features:

  • Account recovery using NFC devices, social proofs, or recovery files
  • Granular key management, including recovery-only devices or guardians
  • Bot-resistant airdrop distribution, using proof-of-human interaction via VCA
  • Programmatic transaction limits and conditional operations

All of these features are governed by on-chain logic and executed by decentralized validators or secure enclaves, without ever exposing sensitive operations to the app layer.

Summary​

By decentralizing the backend layer, Interstellar removes the need to trust external APIs or vendors for its most sensitive logic. Whether it’s a transaction, a recovery request, or a secure airdrop, the system ensures that all critical decisions are cryptographically verified and consensus-approved. This transforms the wallet from a frontend shell into a trustless, programmable vault with unmatched resilience against backend compromise.