{
  "handle": "Ballot",
  "mechanism": "The immutable record of one agent's cast choice in a decision. Carries which proposal, which voter, and which option was chosen. The question, the options and the decision rule belong to the `Vote` that called for it; a Ballot is the response, and `Quorum` counts these. Immutable once cast — a revision is a new Ballot carrying a fresh {{monotonic_counter}} sequence, so revocation and amendment surface as distinct later decisions rather than retroactive edits.",
  "gloss": "Immutable record of one agent's cast choice",
  "failure_modes": [
    "Spoiled ballot: ambiguous or invalid {{select}} format.",
    "Double voting: a single agent submits multiple ballots for one proposal (Sybil risk)."
  ],
  "invariants": [
    "Immutable once cast: a revision is a new Ballot, not an edit.",
    "Names one voter and one choice drawn from the options of the decision it answers.",
    "Choice is expressed as a {{select}} over those options, not free text."
  ],
  "_meta": {
    "tier": 1,
    "ring": 0,
    "supersedes": [
      "sema:Ballot#mh:SHA-256:f1d7f5635ea8bc53d0e1718d1ea372bd93b829500ac69602e648e507404f7beb",
      "sema:Ballot#mh:SHA-256:84c3ea1db9fa8ab818d4fd156a8ef0a43d15b50419ca42236869bd9119f35497",
      "sema:Ballot#mh:SHA-256:43ebc85e8e87e132698c59536402d1ba715b0dbad9e6c116f97a056c60da4577"
    ],
    "path": [
      "Infrastructure",
      "Data Structures"
    ]
  },
  "data_schema": {
    "type": "object",
    "required": [
      "ballot_id",
      "proposal_id",
      "voter_id",
      "choice"
    ],
    "properties": {
      "ballot_id": {
        "type": "string"
      },
      "proposal_id": {
        "type": "string"
      },
      "voter_id": {
        "type": "string"
      },
      "choice": {
        "type": "string",
        "description": "The selected option"
      },
      "weight": {
        "type": "number",
        "default": 1
      },
      "signature": {
        "type": "string",
        "description": "Cryptographic proof of vote"
      },
      "timestamp": {
        "type": "string",
        "format": "date-time"
      }
    }
  },
  "sema_ref": "Ballot#e0e4",
  "sema_id": "sema:Ballot#mh:SHA-256:e0e4a34b48dba4669e09b04c4b8c3202f95c878fc26c29480a298012753b1f3c",
  "sema_stub": "e0e4",
  "dependencies": {
    "references": {
      "monotonic_counter": "sema:MonotonicCounter#mh:SHA-256:d0d3ce256be4bc080a29eab7fda36381a4352a280d9a12d59179c60e71cf9bd0",
      "select": "sema:Select#mh:SHA-256:decf9c05490dc5e6b372c5dbb7d89d2285fdd832714fc992b10fdbd6b7c2c2e3"
    }
  },
  "sema_layer": "Infrastructure",
  "sema_category": "Data Structures",
  "used_by": {
    "accepts": {
      "Elect": "sema:Elect#mh:SHA-256:53902a96572579889fc19d4c0100e7876fe566fba4cc846241e6b209b00bf52f",
      "Quorum": "sema:Quorum#mh:SHA-256:2a33f05d34bfb2667645680393ca37865d4a7d05d2056eddf4c9df0c13b21744",
      "Vote": "sema:Vote#mh:SHA-256:84935dbc846bcd8fe2da01e9e04401f190769e87d0354e00c0986e43e414f300"
    }
  }
}