Blockchain technology has already revolutionized online communication and cloud infrastructure, and now it is making strides in programmable privacy for blockchain applications. Fairblock, a leading blockchain privacy platform, has recently announced the launch of their first public testnet called FairyRing [39b542af]. This testnet allows app developers in various ecosystems, including Cosmos, to test integrations for programmable privacy [39b542af]. Fairblock's modular and programmable approaches to privacy expand the design space for blockchain protocols and applications, offering protection against malicious actors [39b542af]. With FairyRing, developers have the freedom to tailor how they integrate encryption and decryption into their applications, using identity-based encryption (IBE), witness encryption (WE), and eventually fully homomorphic encryption (FHE) [39b542af]. The testnet supports a range of applications, including encrypting limit orders, private governance, trustless cross-chain bridges, and censorship-resistant sequencing [39b542af]. Fairblock also addresses the issue of exploitative maximal extractable value (MEV) while preserving transparency options [39b542af]. The launch of FairyRing will enable the development of more robust and resilient blockchain applications while safeguarding user privacy [39b542af]. Developers in the Cosmos ecosystem can start building on the public testnet, and support for other ecosystems will be announced in the future [39b542af].