PranaNet
AQI 91
← bkc-sim-02.sim.prananet.eth
← #6349#6351 →

Reading #6350

292Poor

bkc-sim-02.sim.prananet.eth · cell te7u6n · 11/11/2026, 05:41:00 IST · simulated device

PM2.5
117.6 µg/m³
PM10
224.0 µg/m³
Temperature
29.0 °C
Humidity
62.6 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0xe7944bf1592f6fdef58fd109e6778ea7544b54a2ea2ea9f096f2de9e81833206
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
14/11/2026, 05:43:15 IST (3 days after the reading)
Queryable attributes
device = 0x83161be053d4d23dc940dcfc94fcf0ba39582c44ens = bkc-sim-02.sim.prananet.ethgeohash = te7u6nepoch = 1794355860nonce = 6350pm25_x10 = 1176pm10_x10 = 2240simulated = true
Query that finds this record
from("prananet.reading").where(device = 0x83161be053d4d23dc940dcfc94fcf0ba39582c44 && nonce = 6350).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
    1deviceaddress200x83161be053d4d23dc940dcfc94fcf0ba39582c440x83161be053d4d23dc940dcfc94fcf0ba39582c44
    2epochuint2563217943558600x000000000000000000000000000000000000000000000000000000006af3b294
    3pm25_x10uint2563211760x0000000000000000000000000000000000000000000000000000000000000498
    4pm10_x10uint2563222400x00000000000000000000000000000000000000000000000000000000000008c0
    5temp_x10int256322900x0000000000000000000000000000000000000000000000000000000000000122
    6hum_x10uint256326260x0000000000000000000000000000000000000000000000000000000000000272
    7nonceuint2563263500x00000000000000000000000000000000000000000000000000000000000018ce
    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 0x83161be053d4d23dc940dcfc94fcf0ba39582c44
  5. ✓
    Step 5

    Nonce strictly increases

    Nonce 6350 follows #6349, 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": "0x83161be053d4d23dc940dcfc94fcf0ba39582c44",
  "ens": "bkc-sim-02.sim.prananet.eth",
  "geohash": "te7u6n",
  "epoch": 1794355860,
  "pm25_x10": 1176,
  "pm10_x10": 2240,
  "temp_x10": 290,
  "hum_x10": 626,
  "nonce": 6350,
  "signature": "0x",
  "simulated": true
}