Light Client Development¶
The following resources allow development of apps and services that can transact on the blockchain without downloading an entire copy of the blockchain. A light client (also known as lightweight node) is referencing a trusted full node’s copy of the blockchain, whereas a full node is a node that fully enforces all of the rules of the blockchain.
Lightwalletd¶
A stateless server that serves light clients with blockchain information. It fetches blockchain data from zcashd, processes them to reduce data, and stores it in a database. This allows light clients with different requirements to get relevant data without interacting with zcashd directly.
Resources
Quick info
Parallelize-able, stateless, and containerized
Can run virtually on the cloud (EC2, GCP, AZURE, Docker, etc.)
Not using load balancers, orchestrators, schedulers (yet)
Metrics, stress tests, and testing done (ask us)
Android¶
We maintain a SDK that allows for wallet functionalities (address management, send, receive, etc.), documentation of the APIs, and a demo app that exercises the SDK.
Resources
Quick info
Native Android SDK and app, written in Kotlin
Architecture: targeting ARM64, ARMv7 and x86
APIs: We support API 16+ but we optimize for API versions 21+
iOS¶
We maintain a SDK that allows for wallet functionalities (address management, send, receive, etc.), documentation of the APIs, and a demo app that exercises the SDK.
Resources
Quick info
Native iOS SDK and app, written in Swift
Less mature then Android SDK but working towards parity
Targeting the latest (past two 2 years) iPhones
WASM¶
A minimal functioning demo web wallet that allows desktop OSes to use shielded addresses and separates web-specific wallet functionalities.
Originally built 2019, and is not actively maintained: https://github.com/str4d/zcon1-demo-wasm.