Reading #461
302Very Poorbkc-sim-02.sim.prananet.eth · cell te7u6n · 7/11/2026, 02:21:00 IST · simulated device
PM2.5
122.1 µg/m³
PM10
236.1 µg/m³
Temperature
29.0 °C
Humidity
64.4 %
Arkiv entity
Open in Arkiv explorer ↗- Entity key
- 0xbbebf608e7aaade23eb58739be799e8aed994c718ba7482b92da308bfa435442
- Written by (relayer wallet)
- 0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
- Expires
- 10/11/2026, 02:22:49 IST (3 days after the reading)
- Queryable attributes
- device = 0x83161be053d4d23dc940dcfc94fcf0ba39582c44ens = bkc-sim-02.sim.prananet.ethgeohash = te7u6nepoch = 1793998260nonce = 461pm25_x10 = 1221pm10_x10 = 2361simulated = true
- Query that finds this record
from("prananet.reading").where(device = 0x83161be053d4d23dc940dcfc94fcf0ba39582c44 && nonce = 461).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 0x83161be053d4d23dc940dcfc94fcf0ba39582c44 0x83161be053d4d23dc940dcfc94fcf0ba39582c44 2 epoch uint256 32 1793998260 0x000000000000000000000000000000000000000000000000000000006aee3db4 3 pm25_x10 uint256 32 1221 0x00000000000000000000000000000000000000000000000000000000000004c5 4 pm10_x10 uint256 32 2361 0x0000000000000000000000000000000000000000000000000000000000000939 5 temp_x10 int256 32 290 0x0000000000000000000000000000000000000000000000000000000000000122 6 hum_x10 uint256 32 644 0x0000000000000000000000000000000000000000000000000000000000000284 7 nonce uint256 32 461 0x00000000000000000000000000000000000000000000000000000000000001cd 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 0x83161be053d4d23dc940dcfc94fcf0ba39582c44 - ✓Step 5
Nonce strictly increases
Nonce 461 follows #460, 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": "0x83161be053d4d23dc940dcfc94fcf0ba39582c44",
"ens": "bkc-sim-02.sim.prananet.eth",
"geohash": "te7u6n",
"epoch": 1793998260,
"pm25_x10": 1221,
"pm10_x10": 2361,
"temp_x10": 290,
"hum_x10": 644,
"nonce": 461,
"signature": "0x",
"simulated": true
}