The requester attestation (aka sender proof) is a document that is automatically generated once the transaction is completed and archived.
To retrieve the requester attestation, send a request to GET /v1/archives/{transaction_id}/requester-attestation and optionally pass the language in the lang argument.
curl
https://api.universign.com/v1/archives/tx_MdYyo1rx9XEr/requester-attestation?=lang=fr \
The API returns the PDF requester attestation in the language you set.
