Reading #6209
348Very Poorbkc-sim-04.sim.prananet.eth · cell te7u3y · 11/11/2026, 03:18:00 IST · simulated device
PM2.5
182.2 µg/m³
PM10
336.3 µg/m³
Temperature
29.8 °C
Humidity
64.0 %
Arkiv entity
Open in Arkiv explorer ↗- Entity key
- 0x1d496bd0d2f91ff03b01108688042293e277bf3b890b2f8e0a60c53087399cf6
- Written by (relayer wallet)
- 0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
- Expires
- 14/11/2026, 03:20:37 IST (3 days after the reading)
- Queryable attributes
- device = 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5ens = bkc-sim-04.sim.prananet.ethgeohash = te7u3yepoch = 1794347280nonce = 6209pm25_x10 = 1822pm10_x10 = 3363simulated = true
- Query that finds this record
from("prananet.reading").where(device = 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5 && nonce = 6209).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 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5 2 epoch uint256 32 1794347280 0x000000000000000000000000000000000000000000000000000000006af39110 3 pm25_x10 uint256 32 1822 0x000000000000000000000000000000000000000000000000000000000000071e 4 pm10_x10 uint256 32 3363 0x0000000000000000000000000000000000000000000000000000000000000d23 5 temp_x10 int256 32 298 0x000000000000000000000000000000000000000000000000000000000000012a 6 hum_x10 uint256 32 640 0x0000000000000000000000000000000000000000000000000000000000000280 7 nonce uint256 32 6209 0x0000000000000000000000000000000000000000000000000000000000001841 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 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5 - ✓Step 5
Nonce strictly increases
Nonce 6209 follows #6208, 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": "0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5",
"ens": "bkc-sim-04.sim.prananet.eth",
"geohash": "te7u3y",
"epoch": 1794347280,
"pm25_x10": 1822,
"pm10_x10": 3363,
"temp_x10": 298,
"hum_x10": 640,
"nonce": 6209,
"signature": "0x",
"simulated": true
}