VerifiedX launches vBTC.b on Base with Fireblocks custody

VerifiedX put vBTC.b on Coinbase’s Base EVM chain on May 20, marking the first non‑synthetic Bitcoin asset that can be redeemed for actual BTC and is listed on the Fireblocks custody platform [2]. The launch pairs Base integration with Fireblocks, a leading institutional custodian, to give firms a compliance‑ready way to hold Bitcoin‑backed tokens on‑chain.

The token works like a receipt: holders lock Bitcoin in the VerifiedX network and receive vBTC.b on Base, which can be swapped back to Bitcoin without a centralized bridge [2]. Security relies on FROST threshold signatures—multiple validators must cooperate to sign a transaction—plus zero‑knowledge proofs that hide on‑chain activity, both built on Bitcoin’s Taproot upgrade and audited by Halborn [1]. Over 100 validators currently run the FROST nodes, each required to stake 5,000 VFX, the protocol’s governance token, to join the network [1].

By bringing native redemption to an EVM environment, VerifiedX hopes to tap the $5 billion of Bitcoin value already sitting in DeFi, a fraction of the $80 billion total DeFi market where Ethereum dominates with $43 billion [1]. The Fireblocks integration is intended to attract institutional capital that has so far stayed on the sidelines because existing Bitcoin wrappers are either synthetic or rely on trusted federations.

If the model works, funds could deposit vBTC.b as collateral on Base‑based lending platforms, borrow stablecoins, and later redeem the underlying Bitcoin—all while keeping the assets inside Fireblocks’ custody [2]. The broader implication is a potential shift of Bitcoin liquidity into the fast‑growing Base ecosystem, but the system’s decentralization still depends on the health of the public FROST pool; a total outage would block redemptions [1].

The real test will be whether institutions move Bitcoin into Base via vBTC.b, and how quickly the validator pool scales to ensure reliable redemption without compromising the promised privacy and self‑custody benefits.