device-auth

Canonicalizes device_id, nonce and message, computes an HMAC-SHA256 tag with caller-supplied ephemeral key material, and optionally compares a claimed tag in constant time.

Canonicalizes device_id, nonce and message, computes an HMAC-SHA256 tag with caller-supplied ephemeral key material, and optionally compares a claimed tag in constant time. It does not provision devices, store keys or replace asymmetric device identity; do not submit long-lived production secrets.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.002 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x2880edff…771c4e5e

URL

https://iot.halowerk.com/v1/device-auth

Seen

first 29 days ago · last 4 days ago

53 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.711 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held back by sample size, not by the seller · gap to 1.000 is 0.289: 0.178 uncertain ? + 0.111 short ? · 0.089 to B

How the composite of 0.711 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	0.90	0.606		0.364	−0.060	−0.176
latency p95 it answered as fast as its class	0.20	0.74	0.735		0.147	−0.051	−0.002
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.711	gap to 1.000 = 0.289 · 0.111 short · 0.178 uncertain	0.711	−0.111	−0.178

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.600 × 0.606   liveness       
+ 0.200 × 0.735   latency p95    
+ 0.200 × 1.000   price stability
= 0.711           → UNRATED: 49 of 30 paid calls      weights 2026.09.6 · 49 samples · seed cap_01M1RDAENCP68FVFYEA00C9HDC|2026-09-01T03:41:38.971Z|2026.09.6

Verify it yourselfnpx teppi-check https://iot.halowerk.com/v1/device-authcurl -s https://api.teppi.xyz/v1/trust/cap_01M1RDAENCP68FVFYEA00C9HDC