BlackRock Tokenized BUIDL Fund Incorporates Chronicle Verification Component

BlackRock’s BUIDL fund, the largest crypto tokenized on-chain Treasuries vehicle with around $1.7 billion in assets under management, has incorporated oracle provider Chronicle Protocol as a new verification layer, as announced by both parties on Tuesday.

This serves as a structural attestation layer aimed at providing institutional allocators and DeFi protocols with independently verifiable, real-time evidence of the backing for BUIDL’s tokens.

This development indicates that the infrastructure for tokenized real-world assets (RWA) is moving towards auditable, machine-readable transparency as a fundamental requirement rather than a distinguishing feature.

Chronicle’s Proof of Asset system will obtain holdings-level data directly from BUIDL’s custodians and administrators, offering continuous on-chain attestations that encompass the fund’s valuation, asset composition, custody verification, and data freshness. The Chronicle Dashboard allows public access to these attestations in real time.

Key Takeaways:

• Verification Layer: Chronicle’s Proof of Asset will deliver continuously updated, independently verified holdings data for BUIDL, addressing valuation, composition, custody, and asset existence — accessible via the Chronicle Dashboard.
• Institutional Context: Chronicle’s Proof of Asset currently secures around $5 billion in total value across various funds, including Janus Henderson’s Anemoy Treasury Fund and Superstate’s USTB.
• Market Signal: The collaboration between BlackRock and Securitize sets a transparency standard for institutional-grade tokenized funds aimed at DeFi and TradFi integration.

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What Chronicle Actually Adds to BlackRock BUIDL Crypto Architecture

Chronicle’s integration substitutes a fundamental trust assumption in tokenized fund infrastructure with a cryptographically secured, continuous data stream.

Previously, investors holding BUIDL tokens depended on periodic disclosures from Securitize and BlackRock to comprehend what supported their holdings. Chronicle Proof of Asset alters this by sourcing data directly from custodians, such as BNY Mellon, and publishing tamper-evident attestations on-chain in near real time.

We’ve integrated @ChronicleLabs as the Proof of Asset verification layer for the BlackRock USD Institutional Digital Liquidity Fund (BUIDL).
This unlocks deeper on-chain utility for BUIDL’s $2.1B in assets, enabling protocols to integrate with confidence. pic.twitter.com/S2f9Y3SICF

— Securitize (@Securitize) March 26, 2026

The system offers what Niklas Kunkel, Chronicle’s founder, refers to as an “integrity layer” that provides “more granular and transparent data” across four aspects: valuation inputs, holdings composition, custody confirmation, and asset existence. Daily NAV calculations and specific Treasury holdings verification are processed through a 24/7 public audit trail accessible to both smart contracts and human auditors.

Securitize CEO Carlos Domingo articulated the operational rationale clearly: “Tokenization becomes meaningful when investors and protocols can independently verify what’s actually backing the product.” This perspective is significant, positioning Chronicle not merely as an analytics enhancement but as a necessity for BUIDL’s wider DeFi composability.

Robert Mitchnick, BlackRock’s head of digital assets, affirmed the strategic purpose: “Data oracles are a critical layer of market infrastructure for tokenized assets… We’re excited by Chronicle’s ability to unlock this for platforms and allocators seeking BUIDL fund data on-chain, strengthening confidence and transparency around tokenized assets.”

This statement frames oracles as infrastructure rather than a feature. This distinction is important for how the market will value verification capabilities in the future.

Chronicle is entering this sector with a proven track record. Its Proof of Asset system already secures approximately $8 billion in total value, covering funds such as the Janus Henderson Anemoy Treasury Fund and Superstate’s Short Duration US Government Securities Fund. Securitize has also implemented Chronicle verification for its Tokenized AAA CLO Fund. BUIDL represents the largest mandate to date — and the most prominent.

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