NDK v2.10: Performance Gains, New Tutorials, Cache Adapter, ndk-wallet

• "Happy to announce a new major version of NDK. A lot of work has been going on behind the scenes to improve NDK in a lot of fronts," announced developer PABLOF7z.

"This work, and all the stuff I work on, would literally not be possible without the support from OpenSats and the freedom groups and people sending generous zaps. We are laying the foundation of a new, freer, more prosperous era; I feel incredibly fortunate to be able to focus my undivided energy to this," he added.

What's new

• Optimistic Signature verification. "NDK introduces signature verification sampling. Each relay gets a lower and upper threshold of what ratio of events need to be verified. An unknown relay might start at getting 100% of it's events verified and, over time, lower the ratio to 50%. Whereas a relay the user has in their NIP-65 list might start at 50% and lower to 1%."
• Nostr Cache Adapter. "ndk-cache-nostr is a cache adapter that connects to a single local relay. This could be your a relay running in your user's computer/phone, like the nostr-tray-relay, Citrine, or it can even be a local relay you run in your server to assist in creating server-side-rendering."
  • "If you've been envious of njump previews when sharing a link, now you can implement the same in your app by leveraging this adapter in your SSR calls."
• Refactored Zapping interface. "This is the one breaking change; the code for sending zaps was tightly coupled to the assumption that LN was the interface. This new interface abstracts away the funding mechanism (NWC, WebLN, built-in-wallet) and the delivery mechanism (LN, ecash, Rai stones)."
• Major subscription Lifecycle refactor. "The core of how NDK works was completely refactored from the ground-up, removing a lot of dependencies from nostr-tools, and bringing a lot of clarity to how NDK orchestrates subscriptions at the relay level."
• Tutorials and other stuff. "A few months ago I started a new effort to write more high-level documentation, instead of focusing on interface specs of NDK. https://nostr-dev-kit.github.io/ndk is the ongoing result."
• NIP-60 ndk-wallet extension. NIP-60 is a new NIP that proposes a nostr-native wallet. It leverages multiple ecash mints, making it completely frictionless to onboard into Nostr with the capability to send and receive (via NIP-61 or a proxy like npub.cash) zaps. It is the wallet that Nutsack.me is built on. It comes with the following features:
  • wallet creation/discovery
  • token verification
  • nutzap redemption
  • UTXO management
  • balance tracking

"With this package you'll be able to give your users a non-kyc wallet from which they can send both NIP-61 nutzaps and the usual NIP-57 lightning zaps," said PABLOF7z.

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