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Proof of Human Intent • Product Overview

The intent layer for wallets, payments & agents.

Interstellar ensures that no transaction, smart-contract call, or agent action is executed unless a real human has cryptographically approved that exact action — even on a compromised device.

1 · The New Gap
Authentication ≠ Intent

Malware and AI agents now act after login — draining wallets and triggering irreversible payments while security still trusts the authenticated session.

  • Wallet drain attacks: user “confirms” one thing, the system executes another.
  • Instant settlement (Web3, real-time payments) means there is no rollback window.
  • Existing MFA, biometrics, passkeys all assume: “if the device is authenticated, the action is legitimate”.
Identity provenIntent hijacked
2 · Our Answer
Proof of Human Intent (PoHI)

A new trust layer that cryptographically binds a human-only interaction to a specific action — transaction, trade, or contract call — and produces a cryptographic proof that malware and AI cannot fake.

  • Secure display of the intended action that overlays cannot silently alter.
  • Short cognitive interaction that only the right human can perform reliably at speed.
  • Proof is bound to that exact action at the right time and verified by a decentralized signer network.
If the right human didn’t approve it, it doesn’t happen.
3 · Product

Interstellar SDK + Decentralized Signing

Interstellar plugs into wallets and payment apps as a mobile SDK and routes final execution through a decentralized signing infrastructure — a trust-minimized alternative to single-device keys.

SDK – On-Device
Human intent in a few lines of code

The SDK embeds a short PoHI challenge into the approval flow (100–150ms). It renders a secure transaction summary and collects a human-only response.

  • Rust core + Kotlin/Swift bindings for iOS & Android.
  • Cryptographically bound to the device’s secure element entropy.
  • Produces a compact proof object attached to the transaction request.
Wallet integrationPayment appsSmart-contract calls
Decentralized Signing
“Decentralized Fireblocks” for consumers

Instead of signing with a single local key, execution is delegated to a TEE-secured MPC signer network that only releases signatures when the PoHI proof and the action match.

  • Heterogeneous TEEs and independent consensus ledgers for robustness.
  • Eliminates single-device key theft and invisible drain transactions.
  • Designed to extend from wallets to payment institutions and agents.
TEE-enforced MPCMulti-ledger resilience
4 · Why This Wins

We secure the moment of execution

Existing tools secure identity and sessions. Interstellar secures the decision point — the exact instant where money moves, contracts execute, and agents act.

Legacy stack
• Biometrics / MFA / Passkeys prove who is at the device — but not what is being approved.
• Hardware wallets still fail if the user is misled or the UI is manipulated.
• MTD / EDR tools try to classify threats but cannot make action-level guarantees.
Interstellar PoHI
Intent-bound execution
• Sensitive Action, high amount transaction executes only if a human PoHI challenge has been passed for that specific intent.
• Decentralized signer network refuses signatures when PoHI and action mismatch.
• Secure even on compromised devices — malware and superintelligent AI cannot produce a cryptographically valid human-intent signal.
See the PoHI flow in action

This simulation shows how Interstellar verifies a real human before signing a transaction. The UI displays the exact action being confirmed and requires a human-only response — even if the device were compromised.

Try the Confirmation Simulator →
  • Tap OK (you can leave the “participant” field empty)
  • Take a screenshot
  • Compare what your eyes saw vs. what the screenshot captured

Thanks to persistence of vision (≈1/30s), your brain perceives secure details that never exist in a single captured frame. Malware and overlays cannot steal or alter what the human actually approves. This blocks advanced attacks like wallet drain, UI redressing, clipper malware, and transaction spoofing.

  • 100–150ms added latency
  • No UX redesign — SDK-level integration
  • Extensible to trading agents & other sensitive actions
Interstellar PoHI confirmation screen
5 · Vision

Human authority over autonomous finance

As trading and payment agents, smart contracts, and AI systems gain autonomy, Interstellar becomes the human-intent control plane that keeps them aligned with people: no system can execute an irreversible action unless the right human, cryptographically and behaviorally verified in that moment, has explicitly approved it.

PoHI for agents and autonous finance