/wot/lookup & /wot/requirements : bad value on revoked_on

In Duniter v1.6.24, the field revoked_on (/wot/lookup or /wot/requirements) has a bad value, on Ğ1-test currency.

This should be the block number, were the revocation is stored. But on this Ğ1-test example, the value 1524559092 is not a valid block number :

{
  "identities": [
    {
      "pubkey": "G2CBgZBPLe6FSFUgpx2Jf1Aqsgta6iib3vmDRA1yLiqU",
      "uid": "gab",
      "sig": "e/yBwvzdKb8epM9L4rwCn7j2ex3c/byNNXKJ48dwoK5hp1sCcYiazFbezJ0VvWMNJ6AoYQWGfrGCA5Og9W//CQ==",
      "meta": {
        "timestamp": "24220-0000A2AC46D57C8B608FEDD0BA51ABB88E3E45683D7A03D3D98A1E6D5F5715FE"
      },
      "revocation_sig": null,
      "revoked": true,
      "revoked_on": 1524559092, 
       ...
    }
  ]
}

On the Ğ1 currency, the value seems to be correct (example here)