type `HashCondition`

`common.HashCondition`

Field	Type	Description
presenter	string	Public key of the participant that will present the secret.
hash	bytes	Hash of the secret, populated by the presenter during contract negotiation.
algorithm_oid	bytes	OID of algorithm used to generate hash.

{
  "presenter": "PresenterPublicKey",
  "hash": "13550350a8681c84"
}