Reading #6357
309Very Poorbkc-sim-03.sim.prananet.eth · cell te7u6p · 11/11/2026, 05:48:00 IST · simulated device
PM2.5
131.3 µg/m³
PM10
231.2 µg/m³
Temperature
29.0 °C
Humidity
64.0 %
Arkiv entity
Open in Arkiv explorer ↗- Entity key
- 0x7380e7367c29f3470fe11a862f6cfe8aef9e8ee9d5eaf760ecd802544f66095f
- Written by (relayer wallet)
- 0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
- Expires
- 14/11/2026, 05:50:20 IST (3 days after the reading)
- Queryable attributes
- device = 0xd9c632585a2a926bbcecb64241d9cc0ea0d5efd7ens = bkc-sim-03.sim.prananet.ethgeohash = te7u6pepoch = 1794356280nonce = 6357pm25_x10 = 1313pm10_x10 = 2312simulated = true
- Query that finds this record
from("prananet.reading").where(device = 0xd9c632585a2a926bbcecb64241d9cc0ea0d5efd7 && nonce = 6357).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.
- ✓Step 1
Rebuild the 264-byte message
# Field Type Bytes Value Packed hex 1 device address 20 0xd9c632585a2a926bbcecb64241d9cc0ea0d5efd7 0xd9c632585a2a926bbcecb64241d9cc0ea0d5efd7 2 epoch uint256 32 1794356280 0x000000000000000000000000000000000000000000000000000000006af3b438 3 pm25_x10 uint256 32 1313 0x0000000000000000000000000000000000000000000000000000000000000521 4 pm10_x10 uint256 32 2312 0x0000000000000000000000000000000000000000000000000000000000000908 5 temp_x10 int256 32 290 0x0000000000000000000000000000000000000000000000000000000000000122 6 hum_x10 uint256 32 640 0x0000000000000000000000000000000000000000000000000000000000000280 7 nonce uint256 32 6357 0x00000000000000000000000000000000000000000000000000000000000018d5 8 chainId uint256 32 11155111 0x0000000000000000000000000000000000000000000000000000000000aa36a7 9 readingsContract address 20 0x9192Fc053e1493EB2B7355192aa3F8e57AAE01d8 0x9192fc053e1493eb2b7355192aa3f8e57aae01d8 abi.encodePacked, no padding between fields. chainId and contract stop replay on other chains. Total: 264 bytes. - …Step 2
Hash it with keccak256
… - …Step 3
Recover the signer from the EIP-191 signature
r 0xs 0xv NaNrecovered … - …Step 4
Compare with the registered device key
registered 0xd9c632585a2a926bbcecb64241d9cc0ea0d5efd7 - ✓Step 5
Nonce strictly increases
Nonce 6357 follows #6356, so this reading can't be replayed. - ✓Step 6
Cross-checked against neighbours
Not flagged. The value agrees with neighbouring devices within the verifier's threshold.
Raw reading JSON
{
"device": "0xd9c632585a2a926bbcecb64241d9cc0ea0d5efd7",
"ens": "bkc-sim-03.sim.prananet.eth",
"geohash": "te7u6p",
"epoch": 1794356280,
"pm25_x10": 1313,
"pm10_x10": 2312,
"temp_x10": 290,
"hum_x10": 640,
"nonce": 6357,
"signature": "0x",
"simulated": true
}