{
  "schema": "csoai.wrapper-parity/0.1",
  "kind": "preview",
  "card": {
    "schema": "https://councilof.ai/schema/card-v0.json",
    "surface": "public.notice",
    "subject": "wrapped USDC.e on polygon vs Polygon PoS bridge ERC20Predicate — ESCROW_PARITY_READ",
    "as_of": "2026-09-28T20:30:09Z",
    "source_urls": [
      "https://polygon-bor-rpc.publicnode.com",
      "https://eth.drpc.org"
    ],
    "payload": {
      "kind": "csoai.wrapper.parity/0.1",
      "attests": "point-in-time reads at the pinned blocks named below — a ratio, not a rate, not a grade, not a reserve attestation, not a certificate",
      "id": "usdc.e:polygon",
      "backing_model": "escrow",
      "wrapped": {
        "chain": "polygon",
        "symbol": "USDC.e",
        "address": "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174",
        "chainId": 137,
        "rpc": "https://polygon-bor-rpc.publicnode.com",
        "block": {
          "number": 94614844,
          "hex": "0x5a3b53c",
          "hash": "0x875be3041d44e2864053c1dc43ecf919aa6b19998a1f29a4089c4a4825acea66",
          "timestamp": 1790627406,
          "finality": "RPC_FINALIZED_TAG_PROVIDER_REPORTED_NOT_INDEPENDENTLY_PROVEN_FINAL"
        }
      },
      "canonical": {
        "chain": "ethereum",
        "symbol": "USDC",
        "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
        "chainId": 1,
        "rpc": "https://eth.drpc.org",
        "block": {
          "number": 26078268,
          "hex": "0x18dec3c",
          "hash": "0x3baae53543965ff1356001c6fe1a9bd5f2b4718b32ee947441fcac98ca0463cd",
          "timestamp": 1790626391,
          "finality": "RPC_FINALIZED_TAG_PROVIDER_REPORTED_NOT_INDEPENDENTLY_PROVEN_FINAL"
        }
      },
      "escrow": "0x40ec5B33f54e0E8A33A975908C5BA1c14e5BbbDf",
      "escrow_name": "Polygon PoS bridge ERC20Predicate",
      "note": null,
      "fetched_at": "2026-09-28T20:30:09Z",
      "reads": {
        "wrapped_total_supply": {
          "query": "totalSupply()",
          "atomic": "1008513861510306",
          "normalized": "1008513861.510306",
          "decimals": 6
        },
        "escrow_balance": {
          "query": "balanceOf(0x40ec5B33f54e0E8A33A975908C5BA1c14e5BbbDf)",
          "atomic": "1019113365960479",
          "normalized": "1019113365.960479",
          "decimals": 6
        }
      },
      "state": "ESCROW_PARITY_READ",
      "escrow_over_wrapped": "1.010510",
      "unmeasured": []
    },
    "tags": [
      "eater:wrapper-parity",
      "axis:distribution-integrity",
      "backing:escrow",
      "state:ESCROW_PARITY_READ"
    ],
    "unmeasured": [],
    "did_intended": "did:web:csoai.org#board-attestation-1",
    "preview": true,
    "preview_note": "unsigned preview — no signature, no raw-read hashes. The signed pack (same schema, sig_ed25519 + inputs_sha256 + per-read sha256) is the metered artefact."
  },
  "buy": {
    "resource": "https://csoai-org.pages.dev/api/wrapper?id=usdc.e%3Apolygon",
    "how": "GET the resource → 402 → pay accepts[] (x402) → retry with X-PAYMENT",
    "catalog": "https://csoai-org.pages.dev/api/x402"
  },
  "rail": {
    "mode": "challenge-only",
    "pay_to_configured": true,
    "facilitator_configured": false,
    "note": "402 challenges are complete (asset, amount, payTo) but no facilitator is provisioned, so no receipt can settle and no paid artefact is granted. Nothing is charged. Verification stays free."
  }
}