01
Event contract
Versioned event types, payload schemas and compatibility rules.
DEVELOPERS · EVENTS
Treat blockchain events as enterprise data contracts.
Reliable event architecture needs explicit delivery guarantees, schemas, signatures, replay strategy, ordering assumptions and reconciliation—not just webhook URLs.
02
Delivery
At-least-once semantics, retry backoff and dead-letter handling.
03
Authenticity
Signing, timestamp windows and secret/key rotation.
04
Replay
Durable event IDs and controlled historical replay.
05
Ordering
Per-entity ordering expectations and conflict handling.
06
Reconciliation
Compare ledger state, application state and downstream systems.
Design reliable blockchain events
Build a reusable event contract for enterprise integrations.