PranaNet
AQI 288
← bkc-01.prananet.eth
← #362#365 →

Reading #364

197Moderate

bkc-01.prananet.eth · cell te7u6n · 7/11/2026, 01:23:00 IST

PM2.5
89.1 µg/m³
PM10
89.1 µg/m³
Temperature
28.9 °C
Humidity
56.9 %

Arkiv entity

Open in Arkiv explorer ↗
Entity key
0x6dd86d25cb82cd7e0f6c07b85e8d7e05ff7cdc113409378253bf1d72a0ea1b15
Written by (relayer wallet)
0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
Expires
10/11/2026, 01:24:19 IST (3 days after the reading)
Queryable attributes
device = 0x4379c30ae56431f0485731f6e730ee0084e955c0ens = bkc-01.prananet.ethgeohash = te7u6nepoch = 1793994780nonce = 364pm25_x10 = 891pm10_x10 = 891simulated = false
Query that finds this record
from("prananet.reading").where(device = 0x4379c30ae56431f0485731f6e730ee0084e955c0 && nonce = 364).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
    2epochuint2563217939947800x000000000000000000000000000000000000000000000000000000006aee301c
    3pm25_x10uint256328910x000000000000000000000000000000000000000000000000000000000000037b
    4pm10_x10uint256328910x000000000000000000000000000000000000000000000000000000000000037b
    5temp_x10int256322890x0000000000000000000000000000000000000000000000000000000000000121
    6hum_x10uint256325690x0000000000000000000000000000000000000000000000000000000000000239
    7nonceuint256323640x000000000000000000000000000000000000000000000000000000000000016c
    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 0xb836ca36e91a2c9efec76c38b56500dee76d4cc5a81a80b24cb93c08cd6c6674
    s 0x76397211aacdd556d6789202bb646f0ac45547ed9c9fcddeb92bcbfd61c00ae9
    v 28
    recovered …
  4. …
    Step 4

    Compare with the registered device key

    registered 0x4379c30ae56431f0485731f6e730ee0084e955c0
  5. ✓
    Step 5

    Nonce strictly increases

    Nonce 364 follows #362, 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": 1793994780,
  "pm25_x10": 891,
  "pm10_x10": 891,
  "temp_x10": 289,
  "hum_x10": 569,
  "nonce": 364,
  "signature": "0xb836ca36e91a2c9efec76c38b56500dee76d4cc5a81a80b24cb93c08cd6c667476397211aacdd556d6789202bb646f0ac45547ed9c9fcddeb92bcbfd61c00ae91c",
  "simulated": false
}