PROOFOFCUSTODY
Scores
Incidents
Learn
About
Get the Report
PROOFOFCUSTODY

The independent scoring system for Bitcoin custody. Every platform scored and ranked.

$1B+ in assets under custody expertise

No spam. Unsubscribe anytime.

PLATFORM SCORES
All ScoresCompareMethodologyIndependence StandardDataCustody Assessment
LEARN
Bitcoin 101Custody GuidesCustody InsuranceIs Your Setup Safe?Custody TimelineIncidentsFAQQuiz
COMPANY
AboutAuthorsEditorial IndependenceChangelogCorrections
RESOURCES
PodcastPressReport
CONNECT
Twitter / XLinkedInYouTubehello@proofofcustody.io
2026 Proof of Custody. Published by Onramp Bitcoin. Editorial Independence.PrivacyTermsproofofcustody.io
Back to Scores
Head-to-Head Comparison

Unchained vs ARK 21Shares (ARKB)

85
Unchained
A-Distributed
Collaborative Multisig
68
ARK 21Shares (ARKB)
B-SPOF
ETF — Coinbase Custody
Unchained leads overall with a score of 85/100. Unchained wins in 4 categories, ARK 21Shares (ARKB) wins in 2.
Custody & SecurityEase of UseFeesFeaturesTransparencySupportUnchainedARK 21Shares (ARKB)
Category
Unchained
A-
ARK 21Shares (ARKB)
B-
Overall Score
85
68
Custody & Security
35% weight
88
40
Ease of Use
20% weight
82
85
Fees
15% weight
78
90
Features
10% weight
85
40
Transparency
10% weight
86
75
Support
10% weight
89
70
Category Breakdown
Custody & Security
35% of overall score
88
Unchained
vs
40
ARK 21Shares (ARKB)
Ease of Use
20% of overall score
82
Unchained
vs
85
ARK 21Shares (ARKB)
Fees
15% of overall score
78
Unchained
vs
90
ARK 21Shares (ARKB)
Features
10% of overall score
85
Unchained
vs
40
ARK 21Shares (ARKB)
Transparency
10% of overall score
86
Unchained
vs
75
ARK 21Shares (ARKB)
Support
10% of overall score
89
Unchained
vs
70
ARK 21Shares (ARKB)
Fee Comparison
Unchained
$250/yr + trading
Min: $0
ARK 21Shares (ARKB)
0.21% expense ratio
Min: $0
Custody Features
Unchained
Multisig
✕Multi-Institution
No Single Point of Failure
Segregated Accounts
Proof of Reserves
✕Insurance
Regulated Custodian
✕No Physical Exposure
✕Multi-Jurisdiction
Inheritance
✕Segregated Insurance
IRA
Lending
Buy/Sell
✕Dynasty Trusts
ARK 21Shares (ARKB)

N/A

Our Analysis

Unchained vs ARK 21Shares (ARKB): What the Data Shows

Unchained (dedicated custody) and ARK 21Shares (ARKB) (ETF and fund) serve different corners of the Bitcoin ecosystem, but the question that matters most is the same: who controls the keys? Unchained scores 85/100 (A-) versus 68/100 (B-) for ARK 21Shares (ARKB). The 17-point spread is meaningful — it usually comes down to custody architecture and fee structure.

Where Each Platform Wins

Custody and security — the most heavily weighted category in our methodology at 35% — tilts 48 points toward Unchained (88 vs. 40). Unchained eliminates single points of failure in its custody architecture, while ARK 21Shares (ARKB) relies on a model where one compromised entity could put your bitcoin at risk. On fees, ARK 21Shares (ARKB) wins by 12 points. ARK 21Shares (ARKB) charges 0.21% expense ratio compared to $250/yr + trading at Unchained. Over a multi-year holding period, fee differences compound — a point worth considering for long-term accumulators.

The Custody Question

Here's the key difference: Unchained has no single point of failure (Collaborative Multisig), while ARK 21Shares (ARKB) does (ETF — Coinbase Custody). This matters because a single-point-of-failure model means one compromised entity — whether through a hack, insolvency, or government action — could result in total loss of funds. History has proven this risk is not theoretical. FTX, Celsius, and BlockFi all represented single points of failure for their users.

Bottom Line

Unchained is the clear choice here, outscoring ARK 21Shares (ARKB) by 17 points across our six-category methodology. Keep in mind these platforms target different audiences — Unchained is built for self-sovereign, while ARK 21Shares (ARKB) serves growth investors. One thing to watch with ARK 21Shares (ARKB): single custodian (coinbase). smaller aum. ark reputation volatility.. The data speaks for itself — but always verify our methodology and do your own due diligence before moving bitcoin to any platform.

Frequently Asked Questions

Which is better, Unchained or ARK 21Shares (ARKB)?

Based on our six-category scoring methodology, Unchained scores higher at 85/100 compared to 68/100. The biggest differentiator is custody security, which accounts for 35% of the overall score. However, the right choice depends on your individual needs — review the category breakdown above.

Is Unchained safe for storing Bitcoin?

Unchained scored 88/100 on custody and security in our methodology. It has no single point of failure, distributing custody across multiple entities. Its custody model is classified as Collaborative Multisig. Always verify these details and do your own research.

Does ARK 21Shares (ARKB) have a single point of failure?

Yes. ARK 21Shares (ARKB) uses a ETF — Coinbase Custody model, which means a single compromised entity could put your bitcoin at risk. This is a structural concern for long-term holders.

What are the fees for Unchained vs ARK 21Shares (ARKB)?

Unchained charges $250/yr + trading. ARK 21Shares (ARKB) charges 0.21% expense ratio. Unchained scored 78/100 on fees versus 90/100 for ARK 21Shares (ARKB) in our methodology.

Frequently asked questions
Which is better for inheritance, Unchained or ARK 21Shares (ARKB)?+

Unchained offers dedicated inheritance or beneficiary features. ARK 21Shares (ARKB) does not advertise a dedicated inheritance feature. Match the mechanism, whether beneficiary designation, trust titling, or key inheritance, to your estate plan.

Which has insurance, Unchained or ARK 21Shares (ARKB)?+

Unchained's custody insurance is not publicly disclosed. ARK 21Shares (ARKB)'s custody insurance is not publicly disclosed. Custody insurance covers specific named events up to shared limits, not price loss or every failure mode. Verify current terms before relying on coverage.

Which requires me to hold my own keys, Unchained or ARK 21Shares (ARKB)?+

Unchained involves the holder in key control. ARK 21Shares (ARKB) manages keys for you; you hold none. This is the core structural difference to weigh.

Unchained Full ReviewARK 21Shares (ARKB) Full Review