Reading #6325
301Very Poorbkc-sim-04.sim.prananet.eth · cell te7u3y · 11/11/2026, 05:16:00 IST · simulated device
PM2.5
121.6 µg/m³
PM10
224.2 µg/m³
Temperature
30.0 °C
Humidity
63.7 %
Arkiv entity
Open in Arkiv explorer ↗- Entity key
- 0xda559cc4eada335247f7659295df7b020dbf1ac3d1b8bfef24ac2ea87f039b60
- Written by (relayer wallet)
- 0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
- Expires
- 14/11/2026, 05:18:27 IST (3 days after the reading)
- Queryable attributes
- device = 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5ens = bkc-sim-04.sim.prananet.ethgeohash = te7u3yepoch = 1794354360nonce = 6325pm25_x10 = 1216pm10_x10 = 2242simulated = true
- Query that finds this record
from("prananet.reading").where(device = 0x35025af20ff45df8ac04d45f8b91ff1baa61e5a5 && nonce = 6325).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 1794354360 0x000000000000000000000000000000000000000000000000000000006af3acb8 3 pm25_x10 uint256 32 1216 0x00000000000000000000000000000000000000000000000000000000000004c0 4 pm10_x10 uint256 32 2242 0x00000000000000000000000000000000000000000000000000000000000008c2 5 temp_x10 int256 32 300 0x000000000000000000000000000000000000000000000000000000000000012c 6 hum_x10 uint256 32 637 0x000000000000000000000000000000000000000000000000000000000000027d 7 nonce uint256 32 6325 0x00000000000000000000000000000000000000000000000000000000000018b5 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 6325 follows #6324, 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": 1794354360,
"pm25_x10": 1216,
"pm10_x10": 2242,
"temp_x10": 300,
"hum_x10": 637,
"nonce": 6325,
"signature": "0x",
"simulated": true
}