PranaNet
AQI 251
← bkc-sim-04.sim.prananet.eth
← #6251#6253 →

Reading #6252

78Satisfactory

bkc-sim-04.sim.prananet.eth · cell te7u3y · 11/11/2026, 04:02:00 IST · simulated device

PM2.5
41.3 µg/m³
PM10
77.7 µg/m³
Temperature
28.5 °C
Humidity
63.8 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0x953853e04c1d0bbae0daad2e32af3bd81b2bd5b00c171ac88584acbaca07bb9b
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
14/11/2026, 04:04:34 IST (3 days after the reading)
Queryable attributes
device = 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5ens = bkc-sim-04.sim.prananet.ethgeohash = te7u3yepoch = 1794349920nonce = 6252pm25_x10 = 413pm10_x10 = 777simulated = true
Query that finds this record
from("prananet.reading").where(device = 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5 && nonce = 6252).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
    2epochuint2563217943499200x000000000000000000000000000000000000000000000000000000006af39b60
    3pm25_x10uint256324130x000000000000000000000000000000000000000000000000000000000000019d
    4pm10_x10uint256327770x0000000000000000000000000000000000000000000000000000000000000309
    5temp_x10int256322850x000000000000000000000000000000000000000000000000000000000000011d
    6hum_x10uint256326380x000000000000000000000000000000000000000000000000000000000000027e
    7nonceuint2563262520x000000000000000000000000000000000000000000000000000000000000186c
    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 6252 follows #6251, 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": 1794349920,
  "pm25_x10": 413,
  "pm10_x10": 777,
  "temp_x10": 285,
  "hum_x10": 638,
  "nonce": 6252,
  "signature": "0x",
  "simulated": true
}