PranaNet
AQI 59
← bkc-sim-01.sim.prananet.eth
← #6272#6274 →

Reading #6273

74Satisfactory

bkc-sim-01.sim.prananet.eth · cell te7u6n · 11/11/2026, 04:24:00 IST · simulated device

PM2.5
40.1 µg/m³
PM10
74.2 µg/m³
Temperature
28.1 °C
Humidity
61.3 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0xa21743a4f89e568f1199dc85598a108c5da2fdf3bb5ae902ae5c9156137ef4e2
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
14/11/2026, 04:26:24 IST (3 days after the reading)
Queryable attributes
device = 0xe8cd0141e98eee436fdbd4bd6e2a11914182b2a6ens = bkc-sim-01.sim.prananet.ethgeohash = te7u6nepoch = 1794351240nonce = 6273pm25_x10 = 401pm10_x10 = 742simulated = true
Query that finds this record
from("prananet.reading").where(device = 0xe8cd0141e98eee436fdbd4bd6e2a11914182b2a6 && nonce = 6273).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
    1deviceaddress200xe8cd0141e98eee436fdbd4bd6e2a11914182b2a60xe8cd0141e98eee436fdbd4bd6e2a11914182b2a6
    2epochuint2563217943512400x000000000000000000000000000000000000000000000000000000006af3a088
    3pm25_x10uint256324010x0000000000000000000000000000000000000000000000000000000000000191
    4pm10_x10uint256327420x00000000000000000000000000000000000000000000000000000000000002e6
    5temp_x10int256322810x0000000000000000000000000000000000000000000000000000000000000119
    6hum_x10uint256326130x0000000000000000000000000000000000000000000000000000000000000265
    7nonceuint2563262730x0000000000000000000000000000000000000000000000000000000000001881
    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 0xe8cd0141e98eee436fdbd4bd6e2a11914182b2a6
  5. ✓
    Step 5

    Nonce strictly increases

    Nonce 6273 follows #6272, 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": "0xe8cd0141e98eee436fdbd4bd6e2a11914182b2a6",
  "ens": "bkc-sim-01.sim.prananet.eth",
  "geohash": "te7u6n",
  "epoch": 1794351240,
  "pm25_x10": 401,
  "pm10_x10": 742,
  "temp_x10": 281,
  "hum_x10": 613,
  "nonce": 6273,
  "signature": "0x",
  "simulated": true
}