| ------------ | ------------- | ---------------- | ---- | --- | ------- | --------------- |
| id | sequential ID | int(10) unsigned | NO | PRI | NULL | auto_increment |
| iid | item.id | int(10) unsigned | NO | MUL | 0 | |
-| retract_iid | | int(10) unsigned | NO | MUL | 0 | |
| signed_text | | mediumtext | NO | | NULL | |
| signature | | text | NO | | NULL | |
| signer | | varchar(255) | NO | | | |