Event Envelope V1

Source content

{

"$schema": "https://json-schema.org/draft/2020-12/schema",

"$id": "https://epistemedia.com/schemas/event-envelope-v1.json",

"title": "Epistemedia Event Envelope v1",

"type": "object",

"additionalProperties": false,

"required": [

"schema",

"event_id",

"event_type",

"realm_id",

"actor",

"recorded_time",

"payload",

"payload_digest",

"parents"

],

"properties": {

"schema": {"const": "https://epistemedia.com/schemas/event-envelope-v1.json"},

"event_id": {"type": "string", "pattern": "^em:event:sha256:[a-f0-9]{64}$"},

"event_type": {"type": "string", "minLength": 3},

"realm_id": {"type": "string", "minLength": 3},

"actor": {

"type": "object",

"required": ["id", "kind"],

"properties": {

"id": {"type": "string"},

"kind": {"enum": ["human", "agent", "instrument", "service", "collective"]},

"lineage": {"type": "object"}

},

"additionalProperties": true

},

"valid_time": {"$ref": "#/$defs/timeRange"},

"observed_time": {"$ref": "#/$defs/timeRange"},

"recorded_time": {"type": "string", "format": "date-time"},

"payload": {"type": "object"},

"payload_digest": {"type": "string", "pattern": "^sha256:[a-f0-9]{64}$"},

"parents": {

"type": "array",

"items": {"type": "string", "pattern": "^em:event:sha256:[a-f0-9]{64}$"},

"uniqueItems": true

},

"signatures": {"type": "array", "items": {"type": "object"}},

"supersedes": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},

"visibility": {"enum": ["public", "internal", "restricted", "private"], "default": "internal"}

},

"$defs": {

"timeRange": {

"oneOf": [

{"type": "string", "format": "date-time"},

{

"type": "object",

"required": ["start"],

"properties": {

"start": {"type": "string", "format": "date-time"},

"end": {"type": ["string", "null"], "format": "date-time"},

"precision": {"type": "string"},

"timezone": {"type": "string"}

},

"additionalProperties": false

}

]

}

}

}