This endpoint is used by an Authorized Participant to request the minting of a tokenized asset.

Idempotency: When the Idempotency-Key header is supplied, this endpoint is
idempotent. Multiple requests with the same key and identical request body will
create only one mint request. A subsequent request returns the previously created
request with the same response (no duplicate is created). If the same key is used
with a different request body, the API returns 422 Unprocessable Entity.

Recommended for production: Always supply Idempotency-Key when requesting a
mint. This allows safe retries on timeouts, network errors, or 5xx responses
without risking duplicate requests. Use a client-generated unique value (e.g. UUID).