BlackRock’s tokenized money market fund just got a transparency upgrade. Chronicle Protocol has integrated its Proof of Asset verification layer into BUIDL, the BlackRock USD Institutional Digital Liquidity Fund, delivering real-time, independently verified data about the fund’s holdings, custody, and valuation directly on-chain.
Here’s the thing: BUIDL was already live and growing fast when this happened. Chronicle didn’t build the plumbing before the house went up. It rebuilt the oracle infrastructure underneath a fund that was already managing roughly $1.7 billion in assets, with reports suggesting AUM has since climbed to approximately $2.5 billion.
What Chronicle actually built
Oracles in crypto are the bridges between real-world data and blockchain smart contracts. They take information from off-chain sources, like asset prices or custody records, and make it readable and usable on-chain.
Chronicle Protocol, founded in 2017, went beyond the standard oracle playbook here. Most oracle solutions focus on price feeds or net asset value data. Chronicle’s Proof of Asset technology does something more granular: it sources data directly from custodians and fund administrators, then produces continuously attested records of what the fund actually holds, where those assets are custodied, and what they’re worth.
