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Grayscale Bitcoin Mini (BTC)

B-
ETF — Coinbase CustodySPOFCost-Conscious
Visit Grayscale Bitcoin Mini (BTC)
By Steve L, Editorial Lead·Reviewed by Proof of Custody Editorial
·Last updated Feb 18, 2026
70
Custody & SecurityEase of UseFeesFeaturesTransparencySupport
Score Breakdown
Custody & Security35% weight
65
Ease of Use20% weight
90
Fees15% weight
80
Features10% weight
50
Transparency10% weight
70
Support10% weight
75
Assessment
Key Strength

Lowest expense ratio among spot BTC ETFs. Spin-off from GBTC.

Primary Risk

Single custodian (Coinbase). Smaller AUM. Newer product.

Custody Features

Custody feature data not yet available.

Fees
0.15% expense ratio
Minimum$0
Custody Independence Standard
0 of 4 pillars met
Vendor independenceNot met
Entropy independenceNot publicly documented
Control independenceNot met
Operational independenceNot met

1 independent party or system must fail before a Grayscale Bitcoin Mini (BTC) holder's bitcoin is at risk.

  • •A single institution controls the keys, so its compromise, insolvency, or unilateral action is sufficient to put funds at risk.
How this is assessed →
Insurance

Grayscale Bitcoin Mini (BTC)'s custody insurance is not publicly disclosed.

Frequently asked questions
Is Grayscale Bitcoin Mini (BTC) safe?+

Grayscale Bitcoin Mini (BTC) uses a etf — coinbase custody model and scores 70/100 in our independent review, including 65/100 on custody security. One institution can move funds, which is a single point of failure. Safety depends on your priorities; see the full score breakdown above.

Is my bitcoin insured at Grayscale Bitcoin Mini (BTC)?+

Grayscale Bitcoin Mini (BTC)'s custody insurance is not publicly disclosed in a form we can verify. Where it exists, custody insurance covers specific named events up to shared limits and does not cover price loss. Confirm coverage in writing before relying on it.

What happens to my bitcoin if Grayscale Bitcoin Mini (BTC) fails?+

Because Grayscale Bitcoin Mini (BTC) holds custody through a single institution, recovery in a failure would run through that institution's bankruptcy or resolution process and depends on whether assets were segregated and properly titled. This is the concentration risk of single-custodian models.

Does Grayscale Bitcoin Mini (BTC) support inheritance?+

Grayscale Bitcoin Mini (BTC) does not advertise a dedicated inheritance or beneficiary feature in the data we track. Confirm current options with the provider, since custody inheritance handling changes.

Compare

Grayscale Bitcoin Mini (BTC) vs Others

vs OnrampA
90/100
vs Onramp FinanceA
89/100
vs UnchainedA-
85/100
vs Onramp LendingA-
84/100