BlackRock BUIDL fund, the largest crypto tokenized onchain Treasuries vehicle with approximately $1.7 billion in assets under management, has added oracle provider Chronicle Protocol as a new verification layer, the two parties announced Tuesday.
This is a structural attestation layer designed to give institutional allocators and DeFi protocols independently verifiable, real-time proof of what backs BUIDL’s tokens.
The move signals that tokenized RWA infrastructure is converging on auditable, machine-readable transparency as a baseline requirement, not a differentiator.
Chronicle’s Proof of Asset system will source holdings-level data directly from BUIDL’s custodians and administrators, publishing continuous on-chain attestations covering the fund’s valuation, asset composition, custody verification, and data freshness. The Chronicle Dashboard makes those attestations publicly viewable in real time.
- Verification Layer: Chronicle’s Proof of Asset will provide continuously updated, independently verified holdings data for BUIDL, covering valuation, composition, custody, and asset existence — viewable on the Chronicle Dashboard.
- Institutional Context: Chronicle’s Proof of Asset currently secures approximately $5 billion in total value across funds including Janus Henderson’s Anemoy Treasury Fund and Superstate’s USTB.
- Market Signal: The integration by BlackRock and Securitize establishes a transparency benchmark for institutional-grade tokenized funds targeting DeFi and TradFi composability.
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What Chronicle Actually Adds to Blackrock BUIDL Crypto Architecture
Chronicle’s integration replaces a core trust assumption in tokenized fund infrastructure with a cryptographically secured, continuous data feed.
Previously, investors holding BUIDL tokens had to rely on periodic disclosures from Securitize and BlackRock to understand what backed their position. Chronicle Proof of Asset changes that by sourcing data directly from custodians, including BNY Mellon, and publishing tamper-evident attestations on-chain in near real time.
The system provides what Niklas Kunkel, Chronicle’s founder, describes as an “integrity layer” delivering “more granular and transparent data” across four dimensions: valuation inputs, holdings composition, custody confirmation, and asset existence. Daily NAV calculations and specific Treasury holdings verification flow through a 24/7 public audit trail consumable by both smart contracts and human auditors.
Securitize CEO Carlos Domingo put the operational logic plainly: “Tokenization becomes meaningful when investors and protocols can independently verify what’s actually backing the product.” That framing matters, it positions Chronicle not as an analytics add-on but as a prerequisite for BUIDL’s broader DeFi composability.
Robert Mitchnick, BlackRock’s head of digital assets, confirmed the strategic intent: “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.”
That statement frames oracles as infrastructure, not feature. That distinction matters for how the market prices verification capability going forward.
Chronicle is not entering this space without a track record. Its Proof of Asset system already secures approximately $8 billion in total value, covering funds including the Janus Henderson Anemoy Treasury Fund and Superstate’s Short Duration US Government Securities Fund. Securitize has also deployed Chronicle verification for its Tokenized AAA CLO Fund. BUIDL is the largest mandate yet — and the most visible.
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