PranaNet
AQI 91
← bkc-sim-04.sim.prananet.eth
← #6354#6356 →

Reading #6355

300Poor

bkc-sim-04.sim.prananet.eth · cell te7u3y · 11/11/2026, 05:46:00 IST · simulated device

PM2.5
120.3 µg/m³
PM10
215.4 µg/m³
Temperature
29.8 °C
Humidity
64.1 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0x98cfba31368905dcb6a4a2e374ca36867c442c21c5fc7e5a1a6942b5346f1c6f
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
14/11/2026, 05:48:26 IST (3 days after the reading)
Queryable attributes
device = 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5ens = bkc-sim-04.sim.prananet.ethgeohash = te7u3yepoch = 1794356160nonce = 6355pm25_x10 = 1203pm10_x10 = 2154simulated = true
Query that finds this record
from("prananet.reading").where(device = 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5 && nonce = 6355).ownedBy(0x3a1f21f1c6f05efa35bb7178274b41c8873cca67)

Check it yourself

Your browser just repeated the check the Readings contract does on-chain. The relayer only pays gas: changing any value would break the signature.

  1. ✓
    Step 1

    Rebuild the 264-byte message

    #FieldTypeBytesValuePacked hex
    1deviceaddress200x35025af20ff45df8ac04d45f8b91ff1baa61e5a50x35025af20ff45df8ac04d45f8b91ff1baa61e5a5
    2epochuint2563217943561600x000000000000000000000000000000000000000000000000000000006af3b3c0
    3pm25_x10uint2563212030x00000000000000000000000000000000000000000000000000000000000004b3
    4pm10_x10uint2563221540x000000000000000000000000000000000000000000000000000000000000086a
    5temp_x10int256322980x000000000000000000000000000000000000000000000000000000000000012a
    6hum_x10uint256326410x0000000000000000000000000000000000000000000000000000000000000281
    7nonceuint2563263550x00000000000000000000000000000000000000000000000000000000000018d3
    8chainIduint25632111551110x0000000000000000000000000000000000000000000000000000000000aa36a7
    9readingsContractaddress200x9192Fc053e1493EB2B7355192aa3F8e57AAE01d80x9192fc053e1493eb2b7355192aa3f8e57aae01d8

    abi.encodePacked, no padding between fields. chainId and contract stop replay on other chains. Total: 264 bytes.

  2. …
    Step 2

    Hash it with keccak256

    …
  3. …
    Step 3

    Recover the signer from the EIP-191 signature

    r 0x
    s 0x
    v NaN
    recovered …
  4. …
    Step 4

    Compare with the registered device key

    registered 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5
  5. ✓
    Step 5

    Nonce strictly increases

    Nonce 6355 follows #6354, so this reading can't be replayed.
  6. ✓
    Step 6

    Cross-checked against neighbours

    Not flagged. The value agrees with neighbouring devices within the verifier's threshold.

Raw reading JSON
{
  "device": "0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5",
  "ens": "bkc-sim-04.sim.prananet.eth",
  "geohash": "te7u3y",
  "epoch": 1794356160,
  "pm25_x10": 1203,
  "pm10_x10": 2154,
  "temp_x10": 298,
  "hum_x10": 641,
  "nonce": 6355,
  "signature": "0x",
  "simulated": true
}