There are third party agencies that certify that no synthetic substances are used in the growing or harvesting of the cotton.
Although the Federal Government creates the regulations that are used to govern the reimbursement of hospice organizations for care they give patients on Medicare, it is up to the state to certify individual hospice agencies.
Ideally, however, governments should certify the authenticity of the CAs public key.
This means that the U.K. Foreign and Commonwealth Office certify the notary's signature and seal.
One, at least, of the witnesses should be required to certify to the capacity of the testator at the time of signing.