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Bitcoin Market Map

Bitcoin apps, organized by network and use case.

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Firefish

An open market for Bitcoin-backed fiat and stablecoin loans, with collateral locked in a documented Bitcoin-network escrow and a public protocol implementation.

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Features

BTC-backed loans
Bitcoin-script escrow
Borrow and invest
Public protocol source

About

Firefish first-party docs call it an open market that connects borrowers seeking fiat or stablecoin liquidity with investors funding over-collateralized Bitcoin loans. Protocol documentation describes borrower, lender, liquidator, price-oracle, and payment-oracle roles, and says bitcoin collateral is locked in a smart contract built on top of the Bitcoin network. The protocol source is published at github.com/Firefish-io/firefish-protocol. The borrower-facing app at app.firefish.io loaded on this check. Docs also say the Price Oracle and Payment Oracle are currently operated by Firefish, and that platform implementation may differ from the protocol paper. Do not copy advertised rates as realized return. Distinct from Debifi and from published Lendasat / Hodl Hodl.

Product facts

Awaiting sources for: custody, platforms, lightning, availability.

Facts verified: Not yet verified

No evidence linked.

Networks & use cases

Use cases

Lending/Borrowing

Networks

Layers Bitcoin L1

Settle order · L1 → Lightning → Sidechains → Rollups → Meta → Off-chain

Listing details

Listing updated: Sep 12, 2026
Status: live
Repository: GitHub linked
Website: firefish.io

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