[SIGNAL+PROOF] Census record for one stablecoin (?symbol=): market cap, price, depeg state

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "8qEn3Y3GPXdQ28LHshPa4UYeD8V38Lq9b4jCRirQAY3n",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "discoverable": true,
    "info": {
      "input": {
        "example": {
          "symbol": "basis-cash-bac"
        },
        "exampleRequest": "/stable/coin?symbol=basis-cash-bac",
        "method": "GET",
        "queryParams": {
          "symbol": "required - stablecoin symbol; samples at free /stable/preview (sample_ids)"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "current": {
            "death_type": "depeg-abandoned",
            "lifespan_days": 152,
            "ongoing": false,
            "state": "dead"
          },
          "data_age_hours": 0,
          "entity": "basis-cash-bac",
          "entity_name": "Basis Cash (BAC)",
          "hash_core_version": 4,
          "lifecycle": {
            "birth_at": "2020-11-30",
            "context": "The algorithmic stablecoin BAC traded below USD 1 for a long period and never regained its peg; after the seigniorage...",
            "death_type": "depeg-abandoned",
            "end_at": "2021-05-01",
            "issuer": "Basis Cash (anon)",
            "lifespan_days": 152,
            "mechanism": "algorithmic",
            "ongoing": false,
            "peg": "usd",
            "state": "dead"
          },
          "observed_at": "2026-08-24T15:00:00.121Z",
          "record_hash": "sha256:664da5b5c8cc399928a3149a49732e15d67f66d69b683e1469c0ab9871d8d702",
          "signal_id": "stablecoin.lifecycle",
          "snapshot_date": "2026-08-24",
          "source_ref": "https://www.coingecko.com/en/coins/basis-cash",
          "source_tier": "T1"
        },
        "type": "json"
      }
    },
    "outputSchemaRef": "/manifest",
    "priceUsd": "$0.01",
    "priceUsdNumber": 0.01,
    "routeTemplate": "/stable/coin",
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "additionalProperties": false,
              "properties": {
                "symbol": {
                  "description": "required - stablecoin symbol; samples at free /stable/preview (sample_ids)",
                  "examples": [
                    "basis-cash-bac"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "symbol"
              ],
              "type": "object"
            },
            "type": {
              "const": "http"
            }
          },
          "required": [
            "type",
            "method",
            "queryParams"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {},
            "type": {
              "const": "json"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      }
    }
  }
}

curl "https://api.truthbear.co/stable/coin"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://api.truthbear.co/stable/coin");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://api.truthbear.co/stable/coin")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header