Keycard Shell vs Blockstream Jade Core Blockstream Jade Core leads by 2 points.
Blockstream Jade Core scores 2 points above Keycard Shell, led by rebuildable firmware and checkable keys. Keycard Shell ranks #6 and Blockstream Jade Core #4 of 23 published hardware wallets. Every term of the gap is on the ledger below; the inputs are on the audit receipt.
Keycard Shell69
vs
Blockstream Jade Core71
Scores are out of 100; published scores fall within 41–99 · ranks #6 and #4 of 23
Secure element4/1010/106.5−10.1for Keycard Shell−5.2 of 32
Rebuildable firmware10/107/106.5+5.1for Blockstream Jade Core+2.6 of 32
Checkable keys10/100/102.9+7.5for Blockstream Jade Core+3.8 of 32
Net of the terms+2.4
Criteria roundingThe criteria block is rounded to whole points before it is spread−0.1
Reproduced gap+2.3
Published gapAfter score rounding and bounds — see the note below7169+2.0
Weight is in points of the 86-point weighted total. Points are score points of the gap between the two.
Blockstream Jade CoreScore 71USB-C and Bluetooth signer at $99 with a per-unit Genuine Check — no secure element; the Jade Plus ($149) scores the sameStrength: Firmware anyone can rebuild and match — 10/10Watch-out: No secure element: someone holding the device faces the PIN oracle and your passphrase, not a certified chipKeycard ShellScore 69An air-gapped QR signer with a screen around an EAL6+ Keycard — firmware rebuilt and matched, €129Strength: Secure element you can look up — 10/10Watch-out: First shipped in 2025, so it has a short record in buyers' hands
Quick facts
At a glance
3 of 5 rows read the same for both.
FactKeycard ShellBlockstream Jade Core
One-time priceSnapshotKeycard Shell (with two Keycards) at €129 including VAT (regular €149) on https://keycard.tech/products/keycard-shell, read 1 October 2026; no US dollar list price is published.Blockstream Jade Core: the US store's product data reads "price":"99.00" with no compare-at price (US dollars), read 2 October 2026 from https://store.blockstream.com/products/blockstream-jade-core.json?country=US.
Asset coverageEditorial——
Region fitSnapshotus, europe, globalus, europe, global
Custody modelEditorialSelf-custody: the keys stay on the deviceSelf-custody: the keys stay on the device
Security postureSnapshotSecure element, EAL6+ certified; partly open source; air-gapped signing.No secure element; fully open source; no air-gapped signing.
From the published criteria
Which should you pick?
Keycard Shell
69#6 of 23
Pick it when
Pick Keycard Shell if secure element matters most — it scores 10/10 to Blockstream Jade Core's 4/10 there (weight 27).
Strength
Secure element you can look up — 10/10
Tradeoff
First shipped in 2025, so it has a short record in buyers' hands
Blockstream Jade Core
71#4 of 23
Leads
Pick it when
Pick Blockstream Jade Core if rebuildable firmware matters most — it scores 10/10 to Keycard Shell's 7/10 there (weight 27).
Strength
Firmware anyone can rebuild and match — 10/10
Tradeoff
No secure element: someone holding the device faces the PIN oracle and your passphrase, not a certified chip
Self-identify in 10 seconds
Which one is actually for you?
Keycard Shell
Choose Keycard Shell if secure element matters most
Secure element: 10/10 against 4/10 for Blockstream Jade Core (weight 27)
Keycard ShellScore 69An air-gapped QR signer with a screen around an EAL6+ Keycard — firmware rebuilt and matched, €129Strength: Secure element you can look up — 10/10Watch-out: First shipped in 2025, so it has a short record in buyers' hands
Blockstream Jade CoreLeads
Choose Blockstream Jade Core if rebuildable firmware matters most
Rebuildable firmware: 10/10 against 7/10 for Keycard Shell (weight 27)
Checkable keys: 10/10 against 0/10 for Keycard Shell (weight 12)
Blockstream Jade CoreScore 71USB-C and Bluetooth signer at $99 with a per-unit Genuine Check — no secure element; the Jade Plus ($149) scores the sameStrength: Firmware anyone can rebuild and match — 10/10Watch-out: No secure element: someone holding the device faces the PIN oracle and your passphrase, not a certified chip
Criterion by criterion
Scorecard
Published criteria · weight in points of 8612 of 12 cells scored. Strength is read from the evidence file; the weight is the published one. Methodology
Secure element
by 6 of 10weight 6.5 of 86Keycard Shell leads
Keycard Shell10/10 out of 10
Blockstream Jade Core4/10 out of 10
Rebuildable firmware
by 3 of 10weight 6.5 of 86Blockstream Jade Core leads
Keycard Shell7/10 out of 10
Blockstream Jade Core10/10 out of 10
Genuine check
weight 2.9 of 86Tie
Keycard Shell7/10 out of 10
Blockstream Jade Core7/10 out of 10
Checkable keys
by 10 of 10weight 2.9 of 86Blockstream Jade Core leads
Keycard Shell0/10 out of 10
Blockstream Jade Core10/10 out of 10
Maker independence
weight 2.6 of 86Tie
Keycard Shell10/10 out of 10
Blockstream Jade Core10/10 out of 10
Fund-loss record
weight 2.6 of 86Tie
Keycard Shell5/10 out of 10
Blockstream Jade Core5/10 out of 10
Score dimensions
weights sum to 86
The published score is five dimensions, each weighted for the category. "Published criteria" is the criteria block above; the other four are the engine's own terms — availability, friction, trust record, measured data. Each bar is one side's points out of that dimension's maximum; the weight beside the name is its points of the 86-point weighted total. The published criteria above can fill 24 of the block’s 30. A weight marked “constant here” belongs to a dimension every ranked product in the category holds at the same value: it still counts in the total, and it orders nothing here.
Availabilityweight 20 of 86 · constant here
Keycard Shell14/20Blockstream Jade Core14/20
Tie
Published criteriaweight 30 of 86
Keycard Shell17/30Blockstream Jade Core17.9/30
Blockstream Jade Core leads
Frictionweight 10 of 86 · constant here
Keycard Shell2.7/10Blockstream Jade Core2.7/10
Tie
Trust recordweight 8 of 86 · constant here
Keycard Shell3.2/8Blockstream Jade Core3.2/8
Tie
Measured dataweight 18 of 86 · constant here
Keycard Shell5.5/18Blockstream Jade Core5.5/18
Tie
Decision rulePublished order
Choose Blockstream Jade Core unless the term Keycard Shell leads on is the one you are buying.
Pick Keycard Shell if secure element matters most — it scores 10/10 to Blockstream Jade Core's 4/10 there (weight 27).
The published order weighs every criterion the same way for everyone. To weigh them your way, run .
From the published order
Next best action
If this isn't your case
Other matchups worth comparing
How you can lose money here, and what the ranking scores
Key failure: your own keys are made, shown or recovered unsafely.
Scored by Secure element you can look up · 27% (Keycard Shell 10/10, Blockstream Jade Core 4/10)
Scored by Firmware anyone can rebuild and match · 27% (Keycard Shell 7/10, Blockstream Jade Core 10/10)
Scored by Proof the device is genuine and unmodified · 12% (Keycard Shell 7/10, Blockstream Jade Core 7/10)
Scored by Key creation and signing you can check · 12% (Keycard Shell 0/10, Blockstream Jade Core 10/10)
Scored by Sign and recover without the maker · 11% (Keycard Shell 10/10, Blockstream Jade Core 10/10)
Scored by Years in buyers' hands without a device-level fund loss · 11% (Keycard Shell 5/10, Blockstream Jade Core 5/10)
Every failure family that applies to this category is scored, except Information failure, which the provider pages show as a fact.
Questions
Frequently asked questions
Blockstream Jade Core scores 2 points above Keycard Shell, led by rebuildable firmware and checkable keys. Published scores, out of 100: Keycard Shell 69 (rank 6 of 23 hardware wallets), Blockstream Jade Core 71 (rank 4 of 23).
Reviewed means both products compared here was read against its sources on or after that date; every ranked category is re-read at least every 45 days. Models research, extract and parse. A deterministic engine ranks. Every quote passes an adversarial refute pass.
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