friendica/doc/database/db_2fa_recovery_codes.md

Table 2fa_recovery_codes
===========

Two-factor authentication recovery codes

| Field     | Description                     | Type               | Null | Key | Default | Extra |
| --------- | ------------------------------- | ------------------ | ---- | --- | ------- | ----- |
| uid       | User ID                         | mediumint unsigned | NO   | PRI | NULL    |       |
| code      | Recovery code string            | varchar(50)        | NO   | PRI | NULL    |       |
| generated | Datetime the code was generated | datetime           | NO   |     | NULL    |       |
| used      | Datetime the code was used      | datetime           | YES  |     | NULL    |       |

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