Reading #6319
311Very Poorbkc-sim-03.sim.prananet.eth · cell te7u6p · 11/11/2026, 05:10:00 IST · simulated device
PM2.5
133.8 µg/m³
PM10
252.0 µg/m³
Temperature
28.5 °C
Humidity
66.4 %
Arkiv entity
Open in Arkiv explorer ↗- Entity key
- 0x96a814c76f0833a505ecca9d7d0af7a6f07b8877de88d11433e265cd30272ae2
- Written by (relayer wallet)
- 0x3a1f21f1c6f05efa35bb7178274b41c8873cca67
- Expires
- 14/11/2026, 05:12:20 IST (3 days after the reading)
- Queryable attributes
- device = 0xd9c632585a2a926bbcecb64241d9cc0ea0d5efd7ens = bkc-sim-03.sim.prananet.ethgeohash = te7u6pepoch = 1794354000nonce = 6319pm25_x10 = 1338pm10_x10 = 2520simulated = true
- Query that finds this record
from("prananet.reading").where(device = 0xd9c632585a2a926bbcecb64241d9cc0ea0d5efd7 && nonce = 6319).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 1794354000 0x000000000000000000000000000000000000000000000000000000006af3ab50 3 pm25_x10 uint256 32 1338 0x000000000000000000000000000000000000000000000000000000000000053a 4 pm10_x10 uint256 32 2520 0x00000000000000000000000000000000000000000000000000000000000009d8 5 temp_x10 int256 32 285 0x000000000000000000000000000000000000000000000000000000000000011d 6 hum_x10 uint256 32 664 0x0000000000000000000000000000000000000000000000000000000000000298 7 nonce uint256 32 6319 0x00000000000000000000000000000000000000000000000000000000000018af 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 6319 follows #6318, 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": 1794354000,
"pm25_x10": 1338,
"pm10_x10": 2520,
"temp_x10": 285,
"hum_x10": 664,
"nonce": 6319,
"signature": "0x",
"simulated": true
}