Immy Dorse 
CatSwap, a decentralized automated market maker (AMM) for native Bitcoin assets, has achieved a ‘Secure’ rating following a comprehensive smart contract audit by Hashlock. The review helps CatSwap provide users and builders with greater confidence as liquidity and trading activity expands on Bitcoin Layer 1 via BRC 2.0.
CatSwap enables fully on‑chain swaps for BRC‑20, BRC 2.0, CAT20, DRC‑20, Alkanes, and Runes by leveraging Bitcoin’s OP_CAT covenant—avoiding off‑chain indexers and centralized intermediaries, and keeping operations trustless, atomic, and censorship‑resistant. The protocol is designed to interoperate across Bitcoin and compatible networks such as Fractal Bitcoin and Dogecoin.
Hashlock conducted an independent, manual, line‑by‑line review supported by automated analysis across the scoped contracts. The assessment concluded with a ‘Secure’ rating. In total, Hashlock identified some vulnerabilities, all of which were acknowledged by the CatSwap team. Full technical details, including affected components, recommendations, and status, are provided in the public report.
Hashlock’s audit confirms that CatSwap contracts are secure, robust, and launch-ready, marking a critical milestone as the platform scales its operations in the regulated crypto finance space.
You can find the report here: https://hashlock.com/audits/catswap
About Hashlock:
Hashlock is a leading Web3 security firm specializing in smart contract auditing and blockchain cybersecurity. Our mission is to ensure the safe adoption of blockchain technology through rigorous audits and comprehensive security services.
Website: https://hashlock.com/
About CatSwap:
CatSwap is a decentralized Automated Market Maker (AMM) swap platform built on Bitcoin Layer 1 technologies—including BRC-20, BRC 2.0, CAT20, DRC-20, Alkanes, and Runes. It leverages the power of the OP_CAT covenant to enable fully on-chain token swapping without reliance on off-chain indexers or centralized intermediaries, ensuring trustless, censorship-resistant operations that are atomic and secure by design. CatSwap operates across not only Bitcoin but also compatible networks like Fractal Bitcoin and even Dogecoin, positioning itself as a pioneering protocol in the BTCFi (Bitcoin finance) ecosystem.
Website: https://catswap.fun/
X: x.com/CatSwap_Fun