PranaNet
AQI 311
← bkc-01.prananet.eth
← #461#463 →

Reading #462

193Moderate

bkc-01.prananet.eth · cell te7u6n · 7/11/2026, 03:01:00 IST

PM2.5
87.9 µg/m³
PM10
87.9 µg/m³
Temperature
21.5 °C
Humidity
72.4 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0x1a28ea4553ebb9865535a4c478ae1d7d74d0286cc6fb60e9b92b3ac92b6b4eba
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
10/11/2026, 03:02:06 IST (3 days after the reading)
Queryable attributes
device = 0x4379c30ae56431f0485731f6e730ee0084e955c0ens = bkc-01.prananet.ethgeohash = te7u6nepoch = 1794000660nonce = 462pm25_x10 = 879pm10_x10 = 879simulated = false
Query that finds this record
from("prananet.reading").where(device = 0x4379c30ae56431f0485731f6e730ee0084e955c0 && nonce = 462).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
    1deviceaddress200x4379c30ae56431f0485731f6e730ee0084e955c00x4379c30ae56431f0485731f6e730ee0084e955c0
    2epochuint2563217940006600x000000000000000000000000000000000000000000000000000000006aee4714
    3pm25_x10uint256328790x000000000000000000000000000000000000000000000000000000000000036f
    4pm10_x10uint256328790x000000000000000000000000000000000000000000000000000000000000036f
    5temp_x10int256322150x00000000000000000000000000000000000000000000000000000000000000d7
    6hum_x10uint256327240x00000000000000000000000000000000000000000000000000000000000002d4
    7nonceuint256324620x00000000000000000000000000000000000000000000000000000000000001ce
    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 0xa9319af061b7571c7ce6c57c51294a2efa94082413b18fa8f51a6b67fdd01ff8
    s 0x4a6089c64519e4dde5f167a94b49d96e9dafecc0c8943d7c4bb082bd306ec5c4
    v 28
    recovered …
  4. …
    Step 4

    Compare with the registered device key

    registered 0x4379c30ae56431f0485731f6e730ee0084e955c0
  5. ✓
    Step 5

    Nonce strictly increases

    Nonce 462 follows #461, 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": "0x4379c30ae56431f0485731f6e730ee0084e955c0",
  "ens": "bkc-01.prananet.eth",
  "geohash": "te7u6n",
  "epoch": 1794000660,
  "pm25_x10": 879,
  "pm10_x10": 879,
  "temp_x10": 215,
  "hum_x10": 724,
  "nonce": 462,
  "signature": "0xa9319af061b7571c7ce6c57c51294a2efa94082413b18fa8f51a6b67fdd01ff84a6089c64519e4dde5f167a94b49d96e9dafecc0c8943d7c4bb082bd306ec5c41c",
  "simulated": false
}