AsyncAPI channel · Kusama
· Kusama JSON-RPC Subscription API
beefy_subscribeJustifications
Emits BEEFY justifications, the bridge-friendly finality gadget layered on GRANDPA and designed to be verifiable by non-Substrate chains (notably Ethereum). Unsubscribe with beefy_unsubscribeJustifications.
The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.
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