Cardano vs. Sui: Two Strategies Compete for Bitcoin DeFi

Bitcoin finance is becoming a new competitive layer between Cardano and Sui as both ecosystems develop infrastructure designed to put BTC capital to work beyond its native network. In a new analysis, Cardano content creator Linda compared the two approaches, arguing that Sui currently has stronger institutional positioning and existing DeFi liquidity, while Cardano has been developing a broader set of solutions for longer.

Sui Builds Its Bitcoin Strategy Around Hashi

Linda’s comparison starts with Hashi, Sui’s recently launched testnet infrastructure for Bitcoin-based finance.

Under the model she described, users deposit Bitcoin into the protocol while the underlying asset remains locked on the Bitcoin network. Hashi then issues HBTC on Sui, a programmable representation backed one to one by the locked Bitcoin and designed for use across Sui DeFi applications. Users can later redeem HBTC to recover the underlying BTC.

The structure still shares characteristics with a bridge. Bitcoin is locked on one network while another asset represents it elsewhere. The distinction is primarily in how control over the locked Bitcoin is secured.

Hashi uses two separate verification layers.

One consists of the protocol’s validator network, while another independent group operates as guardians. Bitcoin cannot move unless both sides approve the transaction, giving either layer the ability to stop execution if the other is compromised.

That security architecture is being paired with an institutional strategy.

Linda said Hashi had already attracted more than 25 partners and projects, naming BitGo, Ledger, Blockdaemon and Cumberland among those involved around the testnet. She also cautioned that partnership announcements do not always reveal how deeply each organization is participating, but described the initial network around Hashi as a strong foundation for attracting liquidity.

No mainnet launch had been announced at the time of her analysis.

Cardano Has Multiple Routes Into Bitcoin Finance

Cardano is taking a more distributed approach.

Rather than building the ecosystem around a single platform, several teams are developing infrastructure for bringing Bitcoin into lending, yield and other financial applications.

One of the earliest is Bifrost from Fluid Tokens. The project is developing a trust minimized Bitcoin bridge and uses Cardano’s stake pool infrastructure as part of its approach to reducing dependence on a single custodian.

Fluid Tokens already operates lending products on Cardano, giving the team an existing financial layer where Bitcoin liquidity could eventually be deployed.

Linda also highlighted BTC Karma from CSWAP, which explores ways for Bitcoin holders to earn yield and participate in Cardano DeFi without leaving BTC entirely idle.

A third route comes from Input Output through Pogun.

Pogun is being developed around a broader model in which Bitcoin could eventually be used as collateral, borrowed against, lent and incorporated into credit markets on Cardano. That places its ambition beyond basic asset transfer and closer to building financial infrastructure around Bitcoin itself.

Cardano therefore has several independent teams targeting different parts of the same opportunity rather than one dominant protocol.

Liquidity Could Separate Cardano and Sui

Linda identified liquidity and distribution as Sui’s clearest current advantage.

At the time of her recording, she cited roughly $430 million in Sui DeFi TVL compared with about $62 million on Cardano. She connected that gap with Sui’s existing level of activity and its apparent ability to bring institutional participants into Hashi before mainnet deployment.

Cardano, by comparison, moved earlier on Bitcoin finance and now has several teams addressing different parts of the stack. Its challenge is converting that technical breadth into deeper liquidity and stronger institutional participation.

That creates two distinct bets on the same pool of capital.

Sui is attempting to combine Hashi’s security model with concentrated institutional distribution. Cardano is betting on a broader set of products spanning bridging, lending, yield and credit infrastructure.

The competition will ultimately be shaped by where Bitcoin holders can use BTC as productive capital, which security assumptions they are willing to accept, and which ecosystem can build enough lending and liquidity around that capital to keep it active once it arrives.