Create one or more events. Returns a list of the ids of the created event and
a cryptographic hash of each received events, as described at
https://preview.retraced.io/documentation/architecture/hashing-formula/
Create one or more events. Returns a list of the ids of the created event and
a cryptographic hash of each received events, as described at
https://preview.retraced.io/documentation/architecture/hashing-formula/