Devices are scored on a separate rubric: entropy, firmware, supply chain, disclosure conduct, interoperability, privacy. It depends on what the holding has to survive: a single point of failure can be excellent at everything else and still lose everything at once, so read that column first, then the fees against your size.
| Platform | Score | Custody model | Single point of failure | Independence | Insurance | Regulatory | Qualified custodian | Fees | Minimum | Incidents | As of |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Foundation (Passport) | 81 | Hardware Wallet | No | 1/4 | Not disclosed | Not published | n/s | ~$200 | $0 | 0 | 2026-08-03 |
| Trezor | 71 | Hardware Wallet | No | 1/4 | Not disclosed | Not published | n/s | ~$70 - $180 | $0 | 0 | 2026-08-03 |
| Ledger | 59 | Hardware Wallet | No | 0/4 | Not disclosed | Not published | n/s | ~$80 - $280 | $0 | 1 | 2026-08-03 |
| Coldcard | 58 | Hardware Wallet | No | 1/4 | Not disclosed | Not published | n/s | ~$150 one-time | $0 | 1 | 2026-08-03 |
Facts are from each provider's own documents and public filings with the date the record was last checked; "n/s" means not stated by the provider. Scores are Proof of Custody's judgement on the published methodology. Coverage is selected, not exhaustive; absence is not evidence of safety. As data: /data/matrix.json. Dispute a cell through corrections.
Free, read-only, no key. Every answer carries its source URL, as-of date and the publisher disclosure.