Reading #6278
89Satisfactorybkc-sim-05.sim.prananet.eth · cell te7u6q · 11/11/2026, 04:29:00 IST · simulated device
PM2.5
50.5 µg/m³
PM10
89.2 µg/m³
Temperature
29.4 °C
Humidity
63.2 %
Arkiv entity
Open in Arkiv explorer ↗- Entity key
- 0xb9fbee7a08fd390c2939980f1b2677447eaa284a140dfee7a33572fa36fa98b8
- Written by (relayer wallet)
- 0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
- Expires
- 14/11/2026, 04:31:54 IST (3 days after the reading)
- Queryable attributes
- device = 0x6ba7ec7f9de29074c329cadb667a6f5412419397ens = bkc-sim-05.sim.prananet.ethgeohash = te7u6qepoch = 1794351540nonce = 6278pm25_x10 = 505pm10_x10 = 892simulated = true
- Query that finds this record
from("prananet.reading").where(device = 0x6ba7ec7f9de29074c329cadb667a6f5412419397 && nonce = 6278).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 0x6ba7ec7f9de29074c329cadb667a6f5412419397 0x6ba7ec7f9de29074c329cadb667a6f5412419397 2 epoch uint256 32 1794351540 0x000000000000000000000000000000000000000000000000000000006af3a1b4 3 pm25_x10 uint256 32 505 0x00000000000000000000000000000000000000000000000000000000000001f9 4 pm10_x10 uint256 32 892 0x000000000000000000000000000000000000000000000000000000000000037c 5 temp_x10 int256 32 294 0x0000000000000000000000000000000000000000000000000000000000000126 6 hum_x10 uint256 32 632 0x0000000000000000000000000000000000000000000000000000000000000278 7 nonce uint256 32 6278 0x0000000000000000000000000000000000000000000000000000000000001886 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 0x6ba7ec7f9de29074c329cadb667a6f5412419397 - ✓Step 5
Nonce strictly increases
Nonce 6278 follows #6277, so this reading can't be replayed. - ✕Step 6
Cross-checked against neighbours
Flagged by the verifier: 50.5 µg/m³ (station outlier). The signature is genuine, but the value disagrees with its neighbours by more than 50% and 25 µg/m³.
Raw reading JSON
{
"device": "0x6ba7ec7f9de29074c329cadb667a6f5412419397",
"ens": "bkc-sim-05.sim.prananet.eth",
"geohash": "te7u6q",
"epoch": 1794351540,
"pm25_x10": 505,
"pm10_x10": 892,
"temp_x10": 294,
"hum_x10": 632,
"nonce": 6278,
"signature": "0x",
"simulated": true
}