{
  "$schema": "https://json-schema.org/draft/2020-12",
  "$id": "https://raw.githubusercontent.com/api-evangelist/footprint/main/json-schema/wallet-profile.json",
  "title": "Footprint Analytics Wallet Profile",
  "description": "Schema for a comprehensive on-chain wallet profile returned by the Footprint Analytics Data API.",
  "type": "object",
  "properties": {
    "wallet_address": {
      "type": "string",
      "description": "The blockchain wallet address that was queried.",
      "pattern": "^(0x[0-9a-fA-F]{40}|[1-9A-HJ-NP-Za-km-z]{25,62})$",
      "examples": ["0x742d35Cc6634C0532925a3b844Bc454e4438f44e"]
    },
    "chain": {
      "type": "string",
      "description": "Blockchain network identifier.",
      "enum": [
        "ethereum", "bnb", "polygon", "arbitrum", "optimism", "avalanche",
        "fantom", "solana", "bitcoin", "sui", "starknet", "zksync",
        "celo", "cronos", "ronin", "moonbeam", "moonriver", "base", "linea", "scroll"
      ]
    },
    "native_balance": {
      "type": "number",
      "description": "Balance in the chain's native token (e.g., ETH for Ethereum).",
      "minimum": 0
    },
    "native_balance_usd": {
      "type": "number",
      "description": "Native token balance converted to USD at current prices.",
      "minimum": 0
    },
    "token_holdings": {
      "type": "array",
      "description": "List of ERC-20 or equivalent token holdings.",
      "items": {
        "type": "object",
        "properties": {
          "token_address": { "type": "string" },
          "token_symbol": { "type": "string" },
          "balance": { "type": "number", "minimum": 0 },
          "balance_usd": { "type": "number", "minimum": 0 }
        }
      }
    },
    "nft_holdings_count": {
      "type": "integer",
      "description": "Total number of NFT tokens held across all collections.",
      "minimum": 0
    },
    "defi_positions_count": {
      "type": "integer",
      "description": "Number of active DeFi protocol positions (LP, lending, staking, etc.).",
      "minimum": 0
    },
    "transaction_count": {
      "type": "integer",
      "description": "Total number of on-chain transactions sent by this wallet.",
      "minimum": 0
    },
    "first_tx_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp of the wallet's first ever on-chain transaction."
    },
    "last_tx_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp of the wallet's most recent on-chain transaction."
    }
  }
}