{
  "event": {
    "kind": 4302,
    "id": "0f7831f327f4d81c14710b2c3800ad3a549579dde4dcf2b75709bdcabb25b81c",
    "pubkey": "95ac63a6f99ce221d67af2ab5fe203d3650ee8bac486fe22e01ae74809a41ce2",
    "created_at": 1793920848,
    "tags": [
      [
        "d",
        "3mwso42hvfjrfkxn"
      ],
      [
        "r",
        "https://api.surplusintelligence.ai/v1/chat/completions"
      ],
      [
        "proto",
        "x402"
      ],
      [
        "alt",
        "alalanet service attestation (transition)"
      ],
      [
        "status",
        "input"
      ]
    ],
    "content": "{\"type\":\"transition\",\"service\":\"3mwso42hvfjrfkxn\",\"url\":\"https://api.surplusintelligence.ai/v1/chat/completions\",\"proto\":\"x402\",\"at\":1793920848,\"status\":\"input\",\"previous\":\"invalid\",\"latency_ms\":128,\"http_code\":400,\"detail\":\"answers HTTP 400 to an empty request; validates input before quoting a price\"}",
    "sig": "cf1ab93bb4356195539baa0e0b9ff98f9db14c07ebd4d1347a92e47127f4540d68d77f5799449fed99862eb6ff988fef7eb7eba2dba333e3de7048523febcd9b"
  },
  "event_json": "{\"kind\":4302,\"id\":\"0f7831f327f4d81c14710b2c3800ad3a549579dde4dcf2b75709bdcabb25b81c\",\"pubkey\":\"95ac63a6f99ce221d67af2ab5fe203d3650ee8bac486fe22e01ae74809a41ce2\",\"created_at\":1793920848,\"tags\":[[\"d\",\"3mwso42hvfjrfkxn\"],[\"r\",\"https://api.surplusintelligence.ai/v1/chat/completions\"],[\"proto\",\"x402\"],[\"alt\",\"alalanet service attestation (transition)\"],[\"status\",\"input\"]],\"content\":\"{\\\"type\\\":\\\"transition\\\",\\\"service\\\":\\\"3mwso42hvfjrfkxn\\\",\\\"url\\\":\\\"https://api.surplusintelligence.ai/v1/chat/completions\\\",\\\"proto\\\":\\\"x402\\\",\\\"at\\\":1793920848,\\\"status\\\":\\\"input\\\",\\\"previous\\\":\\\"invalid\\\",\\\"latency_ms\\\":128,\\\"http_code\\\":400,\\\"detail\\\":\\\"answers HTTP 400 to an empty request; validates input before quoting a price\\\"}\",\"sig\":\"cf1ab93bb4356195539baa0e0b9ff98f9db14c07ebd4d1347a92e47127f4540d68d77f5799449fed99862eb6ff988fef7eb7eba2dba333e3de7048523febcd9b\"}",
  "log_index": 1731,
  "proof": {
    "index": 1731,
    "tree_size": 65596,
    "root_hash": "+KEOhlhLgqE0zGIwSzcvUEFgYdC9QAKFZ8RwKkcM2do=",
    "leaf_hash": "F9E+mfvGd7NGget6FVYULagPAislGKNdbmEeeqUyF3A=",
    "hashes": [
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      "IFNQgaaTKkEXv1TTjGJstr1LDJ63Ua81zQPc/igpJmg=",
      "WbM79PTtF2q7skC3Mo20BbxUNdDCvtczSqWKefUuG/8=",
      "UdwEI8XPiXE0XtPo/lOiJhLW79DT2C0fM5FByLQAXoM=",
      "ZhxOwumIbIQVRKXQ3z0fWeVU+5+wlmKQw9ukhugxlnU=",
      "rQbvpWuU40Pb/0+EbzzMo84uZXebtQ8I4MQoZPYy8Wg=",
      "J8z6Oh4wMA5clBEUWEhAEGBOju3lAmIrw8hTokKbNow=",
      "6kFTxddS9035IsUlSg7VXcA+4G5Aw5tDsPov14cjCjU=",
      "0u5TcWsUkuXD21W8jcc4Ixd/SqJBytPDT74UtPJnrHs=",
      "i6Sw0a2wZNVlffX41J5G5ia1ox50hzrnrGcV4QAkVNA=",
      "baYLcVLt6NnCOIDpv2PeDh1SKYx/2Za+JxNeJ1ttEW4=",
      "7tXbpbBEpDblRQMQLcdvY8aBCbbAxFP7Dob1wbCdoIQ=",
      "NwOrLnxh84yImav6oYr8VjPQsd1mjsjbQuOGpsL3qCE=",
      "jvFNLsE7VJBGoHAXOcpdKXpzx/+Yj7QYaXObo1ji3Pw=",
      "tqnSvt9rtnyHSKvENqKC93TRm8fmqWJbriY4O9hDfTE=",
      "ESHnVflyNyyKu1DCnH3nBYuJsIsWtS+hr9G6Gbs8scA=",
      "jjru3lVZ+Prtswxe0EwcFRczxniYedq7Zs8cSHlpnsk="
    ],
    "checkpoint": "alalanet.com/log\n65596\n+KEOhlhLgqE0zGIwSzcvUEFgYdC9QAKFZ8RwKkcM2do=\n\n— alalanet.com/log MBaCUP8mliNMBuxxDnwHd5oJfyY3SO/Kek5pS+BbJP/C6NywSyQkug6+/nBvTFkwZd4xhYmnsT7QKFZsL06vfkG+kgs=\n"
  },
  "log_origin": "alalanet.com/log",
  "log_key": "alalanet.com/log+30168250+ASxEHGmJwVcvJrYDlX9Vsj1vsVQGoQiF5jmtSxSIRZ1t",
  "server_pubkey": "95ac63a6f99ce221d67af2ab5fe203d3650ee8bac486fe22e01ae74809a41ce2",
  "signer": "95ac63a6f99ce221d67af2ab5fe203d3650ee8bac486fe22e01ae74809a41ce2",
  "how_to_verify": "1) check the Nostr signature of event_json (NIP-01) against signer (server_pubkey for alalanet statements, the agent's key for receipts); 2) leaf = SHA-256(0x00 || UTF-8 bytes of event_json); verify proof.hashes (base64) up to proof.root_hash (RFC 6962); 3) verify proof.checkpoint with log_key (C2SP signed note); tiles: /log/ (C2SP tlog-tiles)"
}