Function: Engineering Bitcoin for the Programmable Economy

3 min readFeb 13, 2025

Introduction: From Passive Bitcoin to a Functional Reserve Asset

Bitcoin is the pristine reserve asset for a monetary system governed by mathematics, not central banks. But today, Bitcoin is largely dormant capital — a $2T asset with no inherent yield, no seamless liquidity, and no structured financial integration.

For Bitcoin to fulfill its role as the reserve collateral for a programmable economy, it needs infrastructure that makes it liquid, composable, and capital efficient.

🚀 Function is building this infrastructure.
🚀 ƒ(BTC) is the financial primitive that turns Bitcoin into a productive, yield-generating, programmable reserve asset for DeFi.
🚀 FBTC is the asset representation of ƒ(BTC) — minted, traded, and utilized across financial markets.

Bitcoin is the ultimate collateral — Function ensures it can actually function.

The Bottleneck: Bitcoin Is Pristine, But Not Functional

Despite its monetary superiority, Bitcoin remains trapped in inefficient financial rails:

🚫 Illiquid — Bitcoin cannot move seamlessly across financial markets.
🚫 Underutilized — Unlike ETH staking, Bitcoin lacks a native yield mechanism.
🚫 Fragmented — Wrapped BTC solutions create isolated liquidity silos with high friction.

Ethereum’s Liquid Staking Tokens (LSTs) unlocked $60B+ in financialized ETH liquidity — yet Bitcoin’s DeFi penetration is 10x smaller, despite being 20x larger in market cap.

For Bitcoin to truly replace U.S. Treasuries as the reserve collateral of global finance, it must:
✅ Become liquid — Seamlessly move across financial markets.
✅ Generate yield — Enable Bitcoin-native financial primitives without counterparty risk.
✅ Achieve capital efficiency — Be fully integrated into DeFi & TradFi markets.

This is the gap Function is closing.

ƒ(BTC): The Financial Primitive That Unlocks Bitcoin’s Full Potential

ƒ(BTC) is the next evolution of wrapped Bitcoin, a financial primitive designed to unlock Bitcoin’s full capital efficiency, liquidity, and composability while maintaining its scarcity, security, and decentralization.

ƒ(BTC) = Liquidity + Yield + Capital Efficiency

How it works:
✅ Frictionless Conversion — Seamless minting and burning of FBTC across major ecosystems.
✅ Trustless Bitcoin Yield — Enables BTC-native yield without centralized staking risks.
✅ Institutional-Grade Infrastructure — Built for both DeFi protocols and TradFi institutions.
✅ Deep Market Integration — Seamless composability with DEXs, lending, and derivatives.

FBTC is the functional Bitcoin asset, enabling BTC to act as pristine collateral across financial markets.

The Strategic Vision: Bitcoin as the New Reserve Collateral

The world’s most liquid markets today — repo, derivatives, and credit markets — run on high-quality collateral.

For Bitcoin to replace U.S. Treasuries as the global reserve asset, it must be as liquid and productive as existing financial instruments.

🚀 TradFi Parallel: The repo market processes $5T+ per day, using Treasuries as collateral. ƒ(BTC) unlocks the ability to use Bitcoin as pristine collateral in on-chain financial markets.
🚀 DeFi Parallel: ETH staking yield transformed Ethereum into the economic base layer of DeFi. ƒ(BTC) does the same for Bitcoin — without compromising its trust-minimized nature.

Just as stablecoins transformed USD liquidity, Function is transforming Bitcoin into a financialized reserve.

Function: Building the Infrastructure for Bitcoin’s Financial Future

For ƒ(BTC) to function at scale, Bitcoin needs institutional-grade infrastructure. That’s what Function is building.

🔹 Institutional-Grade Security — Built with institutional custody standards and transparent backing.
🔹 Frictionless Interoperability — Native integration across Ethereum, Mantle, Arbitrum, and beyond.
🔹 Strong Distribution — Backed by Antalpha, ByBit, Galaxy, and leading on-chain liquidity partners.
🔹 Deep Financial Integration — Enabling structured BTC yield products on Avalon, Babylon, Cian, and more.

Bitcoin is the pristine reserve asset.

Function ensures it flows freely across financial markets.

Conclusion: Executing the Monetary Evolution

The transition from trust-based to math-based money is already happening. But for Bitcoin to achieve reserve asset dominance, it needs functionality, liquidity, and financial integration.

💡 Bitcoin is the Pristine Reserve Asset.
💡 ƒ(BTC) is the financial primitive that makes it liquid and productive.
💡 Function is the infrastructure that powers Bitcoin’s financialization.

The monetary evolution is inevitable.

Function is how we execute it.

Learn More:

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Function | ƒ(BTC)
Function | ƒ(BTC)

Written by Function | ƒ(BTC)

Making idle Bitcoin productive with FBTC. $1.3B TVL • 25+ Integrations • fbtc.com/proof-of-assets

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