Circle USYC: Field Position Report

Eigenstate Research, July 02, 2026

Methodology: The Information Field Equations, E = ΔI/A, G = ∮E·dl, Protocol Truth → 1/φ

Publication field context

The Eigenstate engine currently measures the tokenized settlement field at:

• Protocol Truth (PT): 0.0547 (target: 0.618, the golden-ratio equilibrium)
• Field Coherence (κ): 0.3820 (living zone: 0.618-0.678)
• Coverage: 23 of 199 entities with measured ΔI > 0 (11.6%), M1 topology denominator
• Uncertainty (U): 36.0

The field is 0.2361 below equilibrium coherence. Each entity with measured vault activity raises the global PT toward 0.618. Circle USYC does not yet have a complete observation record on the M1 topology (199 entities).

What it is

Circle USYC is a tokenized money market fund representing institutional yield on short-duration U.S. Treasury exposure, the onchain share class of the Hashnote International Short Duration Yield Fund. Issued by Circle International Bermuda Limited, USYC settles subscriptions and redemptions in USDC via audited smart contracts. For the tokenized settlement layer, USYC is a yield-bearing collateral primitive alongside USDC and tokenized T-bill products in institutional RWA flows.

Verified claims

Field Confidence: ? LOW, No external sources mapped for this entity, engine-internal data only

Verification: 3/3 source-checked (ATTESTED), 3 grounded. Each claim below carries a machine-checked status against its cited source; ungrounded items are editorial assessments, not verified facts.

Active signals the engine is tracking for Circle USYC:

Circle USYC, tokenized money market fund overview [✓ ATTESTED-PRIMARY] Circle's developer documentation describes USYC as the onchain representation of a short-duration yield fund investing in U.S. government securities, the primary-source lane for institutional yield collateral in settlement topology. Source-checked: ATTESTED-PRIMARY · custody sha256 2f7341978ddc…, found in primary source

USYC issued by Circle International Bermuda [✓ ATTESTED-PRIMARY] Circle's USYC overview documents issuance by Circle International Bermuda Limited under Bermuda Monetary Authority oversight, the regulatory anchor for yield-token settlement eligibility in the topology. Source-checked: ATTESTED-PRIMARY · custody sha256 2f7341978ddc…, found in primary source

USYC onchain settlement via USDC [✓ ATTESTED-PRIMARY] Circle's USYC documentation describes 24/7 onchain subscription and redemption settled atomically in USDC, the verifiable settlement rail wiring yield collateral into DeFi and RWA liquidity paths. Source-checked: ATTESTED-PRIMARY · custody sha256 2f7341978ddc…, found in primary source

Field read

Settlement Pressure (Φ_S = 0.0200)

Near-zero settlement pressure, this entity is close to field equilibrium.

USYC carries elevated settlement pressure because eligibility restrictions, oracle price feeds, and 24/7 onchain redemption directly affect whether yield-bearing collateral counts as same-day dollar liquidity or gated fund exposure. The engine tracks the gap between USYC's composability in DeFi collateral paths and incomplete vault attestation of fund-administrator allowlists as unrealized Φ_S.

Coherence (κ = 0.0092)

κ = 0.0092 reflects the engine's current measurement coverage, not Circle USYC's actual institutional influence. With no vault records yet, the coherence score is derived purely from topology position, connection count and structural weight, without any attested observation data. The low value means the engine has not yet measured this entity's settlement activity, not that the entity lacks field presence.

The equilibrium attractor is κ = 1/φ ≈ 0.618. At current κ = 0.0092, Circle USYC is 0.6088 below equilibrium. Vault observations of Circle USYC's rule outputs, rulemaking notices, enforcement actions, guidance documents, would directly raise κ toward the living zone [0.618, 0.678].

Vault Coverage

No vault records yet for Circle USYC. This is a gap in the field coverage. The engine recommends observation as the first action (see below).

Sources

This report is generated by the Eigenstate engine, an information-field measurement system for the tokenized settlement layer. The engine tracks 199 entities (M1 topology denominator) across the regulatory, infrastructure, issuer, and audience layers.

Core equations:

• E = ΔI/A, efficiency: information gained per unit action (Kirandeep's Law)
• G = ∮E·dl, accumulated field circulation along topology paths
• PT → 1/φ, Protocol Truth converges to golden-ratio equilibrium (1/φ ≈ 0.618)
• Φ_S, settlement pain: unrealized settlement pressure per entity
• κ, field coherence: integration of settlement activity across the topology

Published implementation: helixhash v0.1.1, Zenodo DOI 10.5281/zenodo.18413995

Vault: No vault records yet for Circle USYC in the current cycle, κ and Φ_S here are topology-derived until observations are attested. The field recommends observation as the first action.

Note: Internal topology codenames are not used in public reports. All entity names in this report are public names.