PranaNet
AQI 143
← bkc-01.prananet.eth
← #395#397 →

Reading #396

194Moderate

bkc-01.prananet.eth · cell te7u6n · 7/11/2026, 01:55:00 IST

PM2.5
88.2 µg/m³
PM10
88.2 µg/m³
Temperature
29.6 °C
Humidity
57.2 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0x65e07c67a193653460cb48c58b3713a166046e173ffed6afa666586d4cd2bafd
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
10/11/2026, 01:56:14 IST (3 days after the reading)
Queryable attributes
device = 0x4379c30ae56431f0485731f6e730ee0084e955c0ens = bkc-01.prananet.ethgeohash = te7u6nepoch = 1793996700nonce = 396pm25_x10 = 882pm10_x10 = 882simulated = false
Query that finds this record
from("prananet.reading").where(device = 0x4379c30ae56431f0485731f6e730ee0084e955c0 && nonce = 396).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
    2epochuint2563217939967000x000000000000000000000000000000000000000000000000000000006aee379c
    3pm25_x10uint256328820x0000000000000000000000000000000000000000000000000000000000000372
    4pm10_x10uint256328820x0000000000000000000000000000000000000000000000000000000000000372
    5temp_x10int256322960x0000000000000000000000000000000000000000000000000000000000000128
    6hum_x10uint256325720x000000000000000000000000000000000000000000000000000000000000023c
    7nonceuint256323960x000000000000000000000000000000000000000000000000000000000000018c
    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 0xc6dd53f50aa0439d3052d399958c2fe56248af6fd6cc3e081051a19897a36701
    s 0x6b922ab121621602f114f1d665f79a321f153f43bcf2cedb83465465e57a81fd
    v 28
    recovered …
  4. …
    Step 4

    Compare with the registered device key

    registered 0x4379c30ae56431f0485731f6e730ee0084e955c0
  5. ✓
    Step 5

    Nonce strictly increases

    Nonce 396 follows #395, 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": 1793996700,
  "pm25_x10": 882,
  "pm10_x10": 882,
  "temp_x10": 296,
  "hum_x10": 572,
  "nonce": 396,
  "signature": "0xc6dd53f50aa0439d3052d399958c2fe56248af6fd6cc3e081051a19897a367016b922ab121621602f114f1d665f79a321f153f43bcf2cedb83465465e57a81fd1c",
  "simulated": false
}