Polkadot is a next-generation blockchain protocol that unites an entire network of purpose-built blockchains, allowing them to operate seamlessly together at scale. Because Polkadot allows any type of data to be sent between any type of blockchain, it unlocks a wide range of real-world use cases. By bringing together the best features from multiple specialized blockchains, Polkadot paves the way for new decentralized marketplaces to emerge, offering fairer ways to access services through a variety of apps and providers. Polkadot’s design offers several distinct advantages over existing and legacy networks, including heterogeneous sharding, scalability, upgradeability, transparent governance and cross-chain composability.
For more resources, please visit: https://substrate.dev/
The BSN city node gateway is adapted to the Polkadot JSON RPC API, so developers can initiate transaction requests to the node gateway via HTTP JSON-RPC. For detailed docking instructions please visit: https://polkadot.js.org/docs/substrate/rpc/#chain
The following table shows additional error code definitions for public city node gateway:
|Error code||Transaction error code||Error code description|
|401||3090000||Authentication permission failed|
|429||3210000||TPS, TPD current limit|
|500||3100000||Service internal exception|