[RFC] Hardware-Anchored Blockchain Identity & Attestation for Flipper One

[eaglecrat]

Summary

Proposal to integrate hardware-anchored blockchain identity into Flipper One — enabling cryptographic attestation of device provenance, firmware integrity, and transaction signing using on-device secure storage.

Scope

• Device Identity: Unique keypair in secure storage (STM32U5 TrustZone or external SE)
• Firmware Attestation: Signed statement: "this device runs verified firmware vX.Y.Z"
• Transaction Signing: Ed25519/Secp256k1 for XRPL/Solana via user confirmation
• Identity Recovery: Shamir secret sharing (3-of-5) across trusted devices

Spec

→ https://github.com/eaglecrat/-flipper-one-proposals/blob/main/hardware/hardware-blockchain-identity.md

Questions

1. Is hardware wallet functionality in scope for Flipper One?
2. STM32U5 TrustZone vs. external secure element — preference?
3. Core firmware feature or external application (like existing crypto apps)?

Risk

• Medium device risk — key generation must be cryptographically sound
• Propose simulator/testnet implementation first
• All signing requires explicit user confirmation (button press)

— ΩV

[eaglecrat]

Related proposals in this sovereign portfolio:

• Testing: [RFC] Self-Healing Diagnostics Framework for Flipper One Testing Pipeline  #4376
• Constellation: [RFC] Constellation: Decentralized Mesh Networking for Multi-Flipper Coordination  #4377
• MCU: [RFC] MCU Secure Boot & Immutable Trust Chain for Flipper One  #4378
• UI: [RFC] Scene Gateway: Immersive UI Navigation Framework for Flipper One  #4379
• Docs: [RFC] Golden Dome: Comprehensive Security Hardening & DFIR Documentation  #4380
• Hardware: [RFC] Hardware-Anchored Blockchain Identity & Attestation for Flipper One  #4381

Master index → https://github.com/eaglecrat/-flipper-one-proposals