ZenBTC

ZenBTC is a decentralized wrapped Bitcoin token issued on Solana by Zenrock Labs. It lets Bitcoin holders bring their BTC into Solana's DeFi ecosystem and earn a native yield without lending out their assets or relying on a centralized custodian. Unlike most wrapped Bitcoin products, which either require trust in a single issuer or earn yield through lending and rehypothecation, zenBTC's yield comes entirely from protocol fee revenue generated by the underlying Zenrock network.

Background and Origins

Zenrock Labs emerged in early 2024 from the restructuring of Qredo, a crypto custody platform that entered administration. Dan Tapiero's 10T Holdings and 1RoundTable Partners — institutional investment firms managing over $2 billion in assets under management — acquired substantial Qredo assets through a combination of private lending, debt financing, and bankruptcy workout. That acquisition became the foundation for Zenrock, which reoriented around building decentralized custody infrastructure. Zenrock has received backing from Spartan Group and Maven 11. Randy Little, a partner at 10T Holdings and 1RoundTable Partners, serves as CEO. Co-founder Aditya Dave leads product development.

How ZenBTC Works

The core of zenBTC is Zenrock's distributed multi-party computation (dMPC) technology. Rather than holding Bitcoin in a single wallet controlled by one entity, dMPC distributes the management of Bitcoin private keys across a network of independent nodes. No single node ever reconstructs the complete private key. Transactions are signed collaboratively using non-interactive signature schemes, and the system includes proactive key refreshing to reduce collusion risks and accountability mechanisms through identifiable aborts. The implementation is compatible with EdDSA, which enables direct compatibility with Solana.

When a user deposits Bitcoin, the BTC remains on the Bitcoin blockchain under dMPC-based custody. Zenrock's purpose-built Layer 1 blockchain, zrChain, manages the custody operations and minting logic. ZenBTC tokens are then issued on Solana representing the custodied Bitcoin at a 1:1 ratio. When a user redeems, the zenBTC is burned and the underlying BTC is released. The Bitcoin is never lent out and never rehypothecated.

Yield Mechanism

ZenBTC's yield is generated entirely from Zenrock network fee revenue, not from token emissions or lending. Specifically, 5% of all zrChain network fees and 35% of zenBTC custody fees flow to zenBTC holders. The mechanism is self-balancing: as Zenrock earns more fees, yield per zenBTC rises; as more users mint zenBTC to capture that yield, total supply increases and the per-token rate normalizes. Payouts are made daily in native Bitcoin, not in governance tokens or secondary assets. The annualized yield since inception stood at approximately 1.59% as of early 2026.

zrChain Infrastructure

ZenBTC is one product built on top of zrChain, Zenrock's purpose-built custody Layer 1 blockchain. ZrChain runs a modified Tendermint consensus with dual virtual machine support (CosmWasm and EVM), sub-second finality, and built-in compliance modules. The validator network spans 42 validators across 22 countries and 5 continents, with a stated uptime SLA of 99.99%. The ZenTP bridge handles cross-chain transfers between zrChain and Solana. Zenrock describes the overarching standard for assets like zenBTC as Decentralized Custody Tokens (DCTs).

Beyond zenBTC, Zenrock has extended the same infrastructure to other assets. zenZEC brings Zcash to Solana under the same dMPC custody model. Hush is a separate privacy service built on zrChain that received an Informal Systems security audit in Q1 2026.

Solana Integration

ZenBTC launched on Solana in mid-2025 and has integrated with the major liquidity venues in the ecosystem. Active integrations include Kamino Finance (lending markets, automated yield strategies, and Liquidity Vaults), Orca, Meteora, Jupiter, Raydium, and Phantom wallet. On Kamino, zenBTC has become the top BTC-backed collateral option. Trading pairs include zenBTC/cbBTC, zenBTC/USDG, and zenBTC/jitoSOL. The project reported over 160 BTC in custody and more than $20 million in total value locked as of early 2026, reaching those levels within approximately four months of mainnet launch.

The Solana token for zenBTC trades under the mint address 9hX59xHHnaZXLU6quvm5uGY2iDiT3jczaReHy6A6TYKw. Zenrock's native chain token, $ROCK, is separate and powers zrChain validator economics and governance.

Security and Audits

Halborn conducted a security assessment of zrChain's core modules — covering identity, policy, treasury, and validation systems — from August through September 2024. Zenrock reports that 100% of findings from that audit were resolved prior to mainnet launch. Informal Systems has also audited components of the Zenrock stack, including the Hush Privacy Protocol. The dMPC key management design means private keys are never fully reconstructed, eliminating a single point of failure that has historically accounted for a large share of DeFi losses from off-chain key theft.

Market Context

Solana has become one of the most active chains for Bitcoin holders seeking DeFi yield, accounting for roughly 59% of wallets trading BTC on-chain while holding less than 25% of the overall wrapped Bitcoin market by supply. ZenBTC is positioned as a decentralized alternative to centrally issued wrapped BTC products. The self-balancing, fee-derived yield model is the primary differentiator from competitors that depend on lending or inflationary emissions.