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BitGo launches Spark Savings, letting institutional clients earn yield on USDC, USDT and USDS without leaving regulated custody, linking to Aave and Tesseract
BitGo Bank & Trust has opened its regulated custody platform to Spark’s on‑chain credit markets, allowing institutional investors to earn yield on stablecoins without moving assets out of custody [1]. The integration, built with DeFi gateway provider Narval, also gives eligible clients access to Aave and Tesseract, expanding the suite of approved protocols for Wall Street‑type treasury desks [3].
Key takeaways
BitGo’s launch of Spark Savings follows a broader push to embed decentralized finance within regulated infrastructure. The product lets eligible BitGo clients allocate stablecoins—specifically USDC, USDT and USDS—into Spark’s on‑chain savings protocol, with the key promise that funds never leave BitGo’s custody environment [2]. The integration was enabled through Narval, which provides the “connective tissue” linking BitGo’s custodial infrastructure to Spark’s on‑chain products [2].
Spark’s position in the DeFi ecosystem is anchored by its relationship to Sky, the protocol that succeeded MakerDAO. As a sub‑DAO of Sky, Spark focuses on structured access to stablecoin and ETH‑denominated credit markets, offering three main components: Spark Savings for yield generation, SparkLend for borrowing and lending, and the Spark Liquidity Layer for broader capital efficiency [2]. The Savings arm reported roughly $6.4 billion in assets at the end of May 2026, while SparkLend managed about $3.4 billion [1]. USDS, one of the supported stablecoins, ranks as the third‑largest stablecoin by market size at approximately $8.7 billion [1].
The integration addresses a core operational hurdle: moving money from a regulated custodian into a smart contract has traditionally been a compliance headache for treasurers. By keeping assets within BitGo’s custody while still granting access to on‑chain credit markets, the partnership offers a “treasury tool” that promises liquidity on demand and higher yields than traditional bank deposits, which often pay little or no interest [1]. This model also sidesteps the GENIUS Act’s prohibition on stablecoin issuers paying interest, as the yield is generated by third‑party protocols like Spark rather than the issuers themselves [1].
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Institutions can access Aave lending protocols directly from BitGo Bank & Trust qualified custody wallets through an integration with Narval, which provides governance and transaction verification controls.
The incident was caused by an exploit of Kelp DAO’s LayerZero-based bridge, which allowed attackers to forge messages and deposit unbacked rsETH tokens as collateral on Aave.
The framework is designed to audit existing assets on Aave V3 markets and establish more rigorous criteria for approving assets to mitigate risks from external infrastructure dependencies.
With BitGo overseeing about $104 billion in assets for more than 1,500 institutional clients [1], the move could signal a broader shift toward regulated DeFi participation by large financial firms. As banks lobby against stablecoin yield competition, the BitGo‑Spark bridge demonstrates a pathway for institutions to capture crypto‑based returns without compromising custody standards, potentially accelerating the adoption of decentralized credit markets in mainstream finance.
AI-assisted synthesis by the TrendWatcher Editorial Desk · sourced from 3 outlets · Jun 12, 2026 · How we report