PranaNet
AQI 334
← bkc-01.prananet.eth
← #359#362 →

Reading #361

197Moderate

bkc-01.prananet.eth · cell te7u6n · 7/11/2026, 01:20:00 IST

PM2.5
89.1 µg/m³
PM10
89.1 µg/m³
Temperature
28.5 °C
Humidity
57.3 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0x870357d89c38b59773ba60b75726d69fc834fad0b8b85376db92c1f886c3f3b3
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
10/11/2026, 01:21:18 IST (3 days after the reading)
Queryable attributes
device = 0x4379c30ae56431f0485731f6e730ee0084e955c0ens = bkc-01.prananet.ethgeohash = te7u6nepoch = 1793994600nonce = 361pm25_x10 = 891pm10_x10 = 891simulated = false
Query that finds this record
from("prananet.reading").where(device = 0x4379c30ae56431f0485731f6e730ee0084e955c0 && nonce = 361).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
    2epochuint2563217939946000x000000000000000000000000000000000000000000000000000000006aee2f68
    3pm25_x10uint256328910x000000000000000000000000000000000000000000000000000000000000037b
    4pm10_x10uint256328910x000000000000000000000000000000000000000000000000000000000000037b
    5temp_x10int256322850x000000000000000000000000000000000000000000000000000000000000011d
    6hum_x10uint256325730x000000000000000000000000000000000000000000000000000000000000023d
    7nonceuint256323610x0000000000000000000000000000000000000000000000000000000000000169
    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 0xb48a546710a1f937c677469d5e7d926bd55d2374d19cf777fd0273c7b14391a3
    s 0x0ce57ee4c322760b79750c5073524b0fa23796753fa6c1e884291c3e459582d0
    v 28
    recovered …
  4. …
    Step 4

    Compare with the registered device key

    registered 0x4379c30ae56431f0485731f6e730ee0084e955c0
  5. ✓
    Step 5

    Nonce strictly increases

    Nonce 361 follows #359, 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": 1793994600,
  "pm25_x10": 891,
  "pm10_x10": 891,
  "temp_x10": 285,
  "hum_x10": 573,
  "nonce": 361,
  "signature": "0xb48a546710a1f937c677469d5e7d926bd55d2374d19cf777fd0273c7b14391a30ce57ee4c322760b79750c5073524b0fa23796753fa6c1e884291c3e459582d01c",
  "simulated": false
}