Function FBTC vs Vishwa: Wrapped BTC or policy controls? (2026)

Function FBTC and Vishwa sit in the same broad Bitcoin category, but serve different needs. Function issues FBTC, a wrapped Bitcoin asset backed by core contributors Antalpha Prime, Mantle and Galaxy Digital. Holders take on custody, issuer and smart-contract risks in addition to ordinary Bitcoin ownership. Function also describes vault integrations and says it has more than 30 integrations.

Vishwa is a control layer for institutional workflows. Its Gate checks requests against a declared mandate before capital moves, and it also offers an agent-oriented compute marketplace and a CLI. It says it does not custody customer funds or private keys. That makes Vishwa a poor substitute for a wrapped Bitcoin token, and FBTC a poor substitute for Vishwa’s policy controls. Decide first whether you need an asset or execution infrastructure.

Function’s TVL is about $666.5 million, compared with about $53.7 million for Vishwa. Those figures indicate a much larger tracked footprint for Function, but they do not establish that FBTC is safer or that its reserves and custody arrangements meet your requirements. Function provides a Proof of Assets page and a Dune dashboard for reserve transparency; users should still review the underlying details.

Vishwa’s TVL is tracked across Bitcoin and Sui, but its homepage offers little technical detail about how that Bitcoin TVL is generated or held. Its product is aimed at institutional capital workflows and agent compute, rather than retail access to a Bitcoin-backed token. For both projects, TVL is only one consideration: check what the figure represents and whether the product itself matches your use case.

Fees for minting, redeeming, swapping or bridging FBTC are not published. Function users may also face costs set by third-party vaults, lending markets or strategy managers. Its displayed vault APYs are estimates shown as ranges, not guaranteed returns, so compare the relevant venue’s terms and costs before using a vault.

Vishwa’s own fees are not published either, and banking-infrastructure pricing appears to require a sales conversation. It lists example GPU rates for OpenNEXT, but those are provider prices, not Vishwa’s charges; availability can vary by region. Neither product offers a published fee schedule that lets users calculate all costs in advance. Ask about the exact service, transaction path and third-party charges relevant to your intended use before committing funds or deploying a workflow.

Both projects have two audits listed, but an audit count alone does not show what was reviewed or what findings remain. Function links to an Audits page, but audit details and custodian arrangements are not public. Its wrapped structure means users depend on the issuer, custodians and smart contracts working as described. Vault use adds exposure to third-party protocols and strategy managers.

Vishwa says it does not hold customer funds or private keys, reducing custody risk relative to a vault or exchange. However, it does not publish auditor names or reports, and it says it is not a bank, broker-dealer, investment adviser, exchange, custodian or money transmitter. Its safeguards also depend on users configuring mandates correctly and on the connected agents, chains and venues. Review each project’s disclosures and operational risks; neither audit listing removes the need for that assessment.

Choose Function if you specifically want FBTC, value its reserve-transparency tools and are comfortable investigating the custody and wrapper risks yourself. Its much larger TVL and integrations may matter if you plan to use the asset in supported vaults, but yields are estimates and fees are not published.

Choose Vishwa if you are an institution or developer seeking pre-execution controls for payments, treasury, credit, vault use or compute procurement. Its policy checks and CLI are more relevant than a wrapped token when the goal is to govern agent activity. Vishwa is less suitable for someone seeking a simple retail Bitcoin app: it is institution-focused, has a demo flow and has a short track record, listed since September 2025. For ordinary Bitcoin exposure, neither product should be treated as identical to holding Bitcoin directly.