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The Defiant curates, digests, and analyzes all the major developments in decentralized finance, so that readers can stay informed and up-to-date about the most cutting-edge and fastest-changing corner of crypto and finance. It was founded in June 2019 by Camila Russo, a former Bloomberg News reporter and author of the book, The Infinite Machine.
Ethereum Foundation’s Kohaku Launches Wallet Privacy Integration SDK, Enabling Ethereum Wallets to Integrate Protocols Such as Railgun
According to The Defiant, the Ethereum Foundation’s Kohaku Initiative has released an SDK for integrating privacy protocols into Ethereum wallets. A functional 4337 mempool relay supporting private transactions is now available in version v0.0.1-alpha.21 of the kohaku-eth/railgun integration. This SDK aims to integrate shielded-pool protocols—such as Railgun, Tornado Cash, and Privacy Pools—directly into wallet interfaces, reducing reliance on centralized relay infrastructure. Kohaku has also demonstrated a CLI-based wallet and is advancing integration with production-grade wallets like Ambire, while simultaneously developing post-quantum accounts, multisig support, and hardware wallet compatibility.
BNB Chain Launches On-Chain Agent Identity and Payment Framework, Introducing ERC-8004 Standard
According to The Defiant, BNB Chain announced its on-chain agent framework on May 13, enabling autonomous agents to obtain verifiable decentralized identities via ERC-8004, receive on-chain payments, hire other agents, and build verifiable reputations. The framework also supports task delegation via ERC-8183, with associated reputation records viewable on 8004scan. BNB Chain states that the system operates entirely on-chain, with transactions and agent hierarchical relationships fully transparent and auditable. Its functional modules integrate native smart contract execution on BNB Chain, natural-language querying of on-chain data, multi-chain connectivity via Nodereal MegaNode API, and Meme token management capabilities powered by fourdotmemezh Agent Skills.
Ethereum NFT marketplace Foundation permanently shuts down due to failed sales transactions
According to The Defiant, the NFT marketplace Foundation has permanently shut down following the failed sale to digital art display company BlackDove. Its platform infrastructure has been taken offline, and there are currently no plans to relaunch it. Foundation’s founder, Kayvon Tehranian, stated that the company had originally hoped to extend its operations through the sale, but the deal fell through—and the team concluded there was no need to continue seeking a buyer. Foundation previously facilitated approximately $230 million in primary sales. The report notes that BlackDove, after conducting comprehensive due diligence following operational handover, decided instead to build its own proprietary marketplace. Foundation also announced it will continue providing a fixed one-year service for media and metadata hosted on IPFS; users must manually cancel their listings and withdraw their NFT assets.
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Ethereum Foundation’s Kohaku Launches Wallet Privacy Integration SDK, Enabling Ethereum Wallets to Integrate Protocols Such as Railgun
According to The Defiant, the Ethereum Foundation’s Kohaku Initiative has released an SDK for integrating privacy protocols into Ethereum wallets. A functional 4337 mempool relay supporting private transactions is now available in version v0.0.1-alpha.21 of the kohaku-eth/railgun integration. This SDK aims to integrate shielded-pool protocols—such as Railgun, Tornado Cash, and Privacy Pools—directly into wallet interfaces, reducing reliance on centralized relay infrastructure. Kohaku has also demonstrated a CLI-based wallet and is advancing integration with production-grade wallets like Ambire, while simultaneously developing post-quantum accounts, multisig support, and hardware wallet compatibility.
BNB Chain Launches On-Chain Agent Identity and Payment Framework, Introducing ERC-8004 Standard
According to The Defiant, BNB Chain announced its on-chain agent framework on May 13, enabling autonomous agents to obtain verifiable decentralized identities via ERC-8004, receive on-chain payments, hire other agents, and build verifiable reputations. The framework also supports task delegation via ERC-8183, with associated reputation records viewable on 8004scan. BNB Chain states that the system operates entirely on-chain, with transactions and agent hierarchical relationships fully transparent and auditable. Its functional modules integrate native smart contract execution on BNB Chain, natural-language querying of on-chain data, multi-chain connectivity via Nodereal MegaNode API, and Meme token management capabilities powered by fourdotmemezh Agent Skills.
Ethereum NFT marketplace Foundation permanently shuts down due to failed sales transactions
According to The Defiant, the NFT marketplace Foundation has permanently shut down following the failed sale to digital art display company BlackDove. Its platform infrastructure has been taken offline, and there are currently no plans to relaunch it. Foundation’s founder, Kayvon Tehranian, stated that the company had originally hoped to extend its operations through the sale, but the deal fell through—and the team concluded there was no need to continue seeking a buyer. Foundation previously facilitated approximately $230 million in primary sales. The report notes that BlackDove, after conducting comprehensive due diligence following operational handover, decided instead to build its own proprietary marketplace. Foundation also announced it will continue providing a fixed one-year service for media and metadata hosted on IPFS; users must manually cancel their listings and withdraw their NFT assets.