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Circle (USDC)

A-
Multi-Institution Reserves (BlackRock + BNY Mellon)DistributedIndependence VerifiedInstitutions & Developers

Circle is the issuer of USDC, the second-largest stablecoin by market cap. USDC reserves are held in short-duration US Treasuries (via BlackRock's Circle Reserve Fund) and cash deposits at BNY Mellon. Monthly attestations are published by Deloitte. Circle operates Circle Mint for institutional direct minting/burning and Cross-Chain Transfer Protocol (CCTP) for multi-chain transfers.

Visit Circle (USDC)
By Steve L, Editorial Lead·Reviewed by Proof of Custody Editorial
·Last updated Mar 2, 2026
82
Custody & SecurityEase of UseFeesFeaturesTransparencySupport
Score Breakdown
Custody & Security35% weight
85
Ease of Use20% weight
82
Fees15% weight
78
Features10% weight
75
Transparency10% weight
92
Support10% weight
78
Assessment
Key Strength

USDC reserves custodied by BlackRock (Circle Reserve Fund) and BNY Mellon. Monthly attestations by Deloitte. Most transparent stablecoin issuer and GENIUS Act ready.

Primary Risk

Circle operates as a single issuer entity. Reserves are diversified across institutions but redemption depends on Circle's operational continuity.

Pros
  • +Most transparent reserve composition
  • +Multi-institution reserve custody
  • +Regulated money transmitter in 49 US states
  • +GENIUS Act compliant architecture
  • +Deep DeFi integration
Cons
  • -Single issuer entity risk
  • -Free minting only for large institutional clients
  • -Previously de-pegged briefly during SVB collapse (March 2023)
Custody Features
✕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
Fees
Free mint/burn (institutional)
Minimum$0 (exchanges) / $100K (Circle Mint)
Security
Key Management
Institutional custody infrastructure
SOC Compliance
SOC 2 Type 2
Penetration Testing
Regulatory
Jurisdiction
United States
Licenses
Money Transmitter (49 states), UK EMI License, France DASP, Singapore MPI
Custody Independence Standard
Independence Verified
Vendor independenceMet
Entropy independenceMet
Control independenceMet
Operational independenceMet

2 independent parties or systems must fail before a Circle (USDC) holder's bitcoin is at risk.

  • •Keys are generated and held by separate institutions, so vendor and entropy paths do not overlap by construction.
How this is assessed →
Insurance

Circle (USDC)'s custody insurance is not publicly disclosed.

Frequently asked questions
Is Circle (USDC) safe?+

Circle (USDC) uses a multi-institution reserves (blackrock + bny mellon) model and scores 82/100 in our independent review, including 85/100 on custody security. No single institution can unilaterally move funds. Safety depends on your priorities; see the full score breakdown above.

Is my bitcoin insured at Circle (USDC)?+

Circle (USDC)'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 Circle (USDC) fails?+

Circle (USDC)'s architecture distributes control, so no single institution's failure alone can move or lose your bitcoin. Recovery depends on the specific structure; see the custody section above.

Does Circle (USDC) support inheritance?+

Circle (USDC) 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

Circle (USDC) vs Others

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