Institutional-Grade Wallet Security Ratings
Linkmerica evaluates digital custody architecture using a structured risk-weighted framework (LISR).
Wallet Index
v1 includes two published rating.
Ledger
Tier B| Category | Score (0–10) | Notes |
|---|---|---|
| Key Architecture | 7 | Isolation and key handling characteristics. |
| Firmware Transparency | 6 | Disclosure posture and update surface considerations. |
| Recovery Model | 8 | Recovery exposure and common failure paths. |
| Governance | 6 | Update controls, change management, and vendor reliance boundaries. |
| Incident History | 7 | Known incidents and user-impact profile. |
| Lifecycle Risk | 8 | Long-term usability and operational risk over time. |
This rating summarizes custody risk characteristics based on publicly observable architecture factors and operational considerations. It does not guarantee safety and does not replace disciplined user procedures.
Trezor
Tier B| Category | Assessment | Notes |
|---|---|---|
| Device Isolation | Strong | Hardware custody isolation characteristics. |
| Firmware Transparency | Strong | Open-source posture and auditability considerations. |
| Key Management Architecture | Moderate | User-controlled key handling with configuration-dependent outcomes. |
| Backup Model | Moderate | Seed handling and recovery discipline remain primary exposure. |
| Operational Complexity | Moderate | Security depends on disciplined setup and ongoing practices. |
| Supply Chain Considerations | Moderate | Procurement, delivery, and physical custody considerations. |
This rating summarizes custody risk characteristics based on publicly observable architecture factors and operational considerations. It does not guarantee safety and does not replace disciplined user procedures.
Tangem
Tier B| Category | Assessment | Notes |
|---|---|---|
| Device Isolation | Strong | Card-based secure-element signing with non-exportable key storage. |
| Firmware Transparency | Moderate | Public documentation exists, but verification posture differs from fully open device models. |
| Key Management Architecture | Moderate | Secure-element key handling with a different verification and recovery profile than traditional hardware wallets. |
| Backup Model | Moderate | Recovery resilience depends on disciplined multi-card redundancy or optional seed configuration. |
| Operational Complexity | Strong | Operational simplicity is a core strength of the NFC card custody model. |
| Supply Chain Considerations | Moderate | Security still depends on card integrity, procurement path, and manufacturing trust assumptions. |
This rating summarizes custody risk characteristics based on publicly observable architecture factors and operational considerations. It does not guarantee safety and does not replace disciplined user procedures.
Methodology
LISR is a structured evaluation framework used to assess digital custody architecture and practical risk exposure. This public summary does not disclose internal weights or scoring math.
- Key architecture isolation
- Firmware transparency
- Recovery model exposure
- Governance
- Incident history
- Lifecycle risk
Digital Custody Risk Review
A structured, written assessment of your self-custody setup.
Designed for:
- Small crypto funds
- Crypto-native operators
- High-net-worth self-custody holders
- Teams managing multisig treasury
This is not a product comparison.
It is an operational risk evaluation of your current custody configuration.
Scope Includes:
- Device architecture review
- Key management structure
- Backup and recovery exposure
- Operational discipline analysis
- Governance and change control review
- Incident and lifecycle considerations
Deliverable:
A structured written report (8–12 sections) outlining custody risk factors, configuration weaknesses, and procedural exposures.
Delivery timeline: 5 business days.
Format: Asynchronous. No calls required.
This review does not replace internal controls or legal counsel.
It provides structured custody risk visibility under the LISR framework.
Founding Cohort Fee: $750
Applications are submitted via email. Linkmerica will never request private keys, seed phrases, or direct wallet access.
Updates
Periodic custody risk updates and methodology revisions may be published in future releases.