If both event_id and signature are encoded in a Bitcoin bloc...

Raw JSON

{
  "kind": 1,
  "id": "2c120368c5304fd1b595e93fd08d840da0417ddb0a1bd91897563714830a0786",
  "pubkey": "d1a61498f4b1dc26df0becd1a3e9e88f355fb614b771e8b5b277d0ff99a82a23",
  "created_at": 1773954666,
  "tags": [
    [
      "e",
      "00007d65c7d422ea94cabda92dc29768e3e2da2aad8bfae43599ea5f941c92f8",
      "wss://nos.lol/",
      "root",
      "40b9c85fffeafc1cadf8c30a4e5c88660ff6e4971a0dc723d5ab674b5e61b451"
    ],
    [
      "e",
      "000008c825d2c18e50597ccc6299efe7722584036b727e3ed8d253833459f223",
      "wss://relay.damus.io/",
      "reply",
      "40b9c85fffeafc1cadf8c30a4e5c88660ff6e4971a0dc723d5ab674b5e61b451"
    ],
    [
      "p",
      "40b9c85fffeafc1cadf8c30a4e5c88660ff6e4971a0dc723d5ab674b5e61b451"
    ]
  ],
  "content": "If both event_id and signature are encoded in a Bitcoin block, you have information about the time at which the signing of the event took place. The act of signing must have taken place prior to the creation of the Bitcoin block.\n\nIf you encode only event_id in the Bitcoin block, then the block does not give you any information about when the event was signed.\n\nSo when you say that \"the id contains all necessary stuff,\" I'm noting that the id does not contain any information as to whether or not the event has been signed.",
  "sig": "9c37e803c6758ff96a9c18bfc8153d959adc6de143b427f32b24e6cd96a4b2c683190521accbe1a3a3d36aedc9211593e84a91bfe45f951a420af5143fb398ed"
}