{
  "$schema": "http://json-schema.org/draft-04/schema",
  "title": "Condition",
  "description": "A fingerprint of a future cryptographically proven event",
  "type": "string",
  "pattern": "^ni:\/\/\/sha-256;[a-zA-Z0-9_-]{0,86}?(?:[a-z0-9-._~!$&'()*+,;=:@\/?]|%[0-9A-F]{2})*$"
}