PranaNet
AQI 87
← bkc-sim-05.sim.prananet.eth
← #6276#6278 →

Reading #6277

97Satisfactory

bkc-sim-05.sim.prananet.eth · cell te7u6q · 11/11/2026, 04:28:00 IST · simulated device

PM2.5
50.7 µg/m³
PM10
96.7 µg/m³
Temperature
29.2 °C
Humidity
62.1 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0xd80cee65df41cdedae628bcfd7c7192bf01c78344d8f3f1b7665b314bf2d6888
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
14/11/2026, 04:30:56 IST (3 days after the reading)
Queryable attributes
device = 0x6ba7ec7f9de29074c329cadb667a6f5412419397ens = bkc-sim-05.sim.prananet.ethgeohash = te7u6qepoch = 1794351480nonce = 6277pm25_x10 = 507pm10_x10 = 967simulated = true
Query that finds this record
from("prananet.reading").where(device = 0x6ba7ec7f9de29074c329cadb667a6f5412419397 && nonce = 6277).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
    1deviceaddress200x6ba7ec7f9de29074c329cadb667a6f54124193970x6ba7ec7f9de29074c329cadb667a6f5412419397
    2epochuint2563217943514800x000000000000000000000000000000000000000000000000000000006af3a178
    3pm25_x10uint256325070x00000000000000000000000000000000000000000000000000000000000001fb
    4pm10_x10uint256329670x00000000000000000000000000000000000000000000000000000000000003c7
    5temp_x10int256322920x0000000000000000000000000000000000000000000000000000000000000124
    6hum_x10uint256326210x000000000000000000000000000000000000000000000000000000000000026d
    7nonceuint2563262770x0000000000000000000000000000000000000000000000000000000000001885
    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 0x6ba7ec7f9de29074c329cadb667a6f5412419397
  5. ✓
    Step 5

    Nonce strictly increases

    Nonce 6277 follows #6276, so this reading can't be replayed.
  6. ✕
    Step 6

    Cross-checked against neighbours

    Flagged by the verifier: 50.7 µg/m³ (station outlier). The signature is genuine, but the value disagrees with its neighbours by more than 50% and 25 µg/m³.

Raw reading JSON
{
  "device": "0x6ba7ec7f9de29074c329cadb667a6f5412419397",
  "ens": "bkc-sim-05.sim.prananet.eth",
  "geohash": "te7u6q",
  "epoch": 1794351480,
  "pm25_x10": 507,
  "pm10_x10": 967,
  "temp_x10": 292,
  "hum_x10": 621,
  "nonce": 6277,
  "signature": "0x",
  "simulated": true
}