change-check

Kairostamp change check: server-side fetch of one public http/https URL, compared against a caller-supplied prior SHA-256 or prior Kairostamp receipt id.

Kairostamp change check: server-side fetch of one public http/https URL, compared against a caller-supplied prior SHA-256 or prior Kairostamp receipt id. Returns whether the response body changed, both digests, and a new time-stamped evidence receipt with its tamper-evident hash-chain entry. One call performs one check; repeat monitoring means calling again.

UNRATEDDelisted

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.01 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0xdb6f694a…37808453

URL

https://kairostamp.com/api/v1/change-check

Seen

first 35 days ago · last 13 days ago

54 free handshakes

Payment

Pays through

x402

Offered on?

Base Sepolia USDC

Listed on?

Base

Disagrees with the offer

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.728 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.272: 0.072 uncertain ? + 0.200 short ? · 0.072 to B

How the composite of 0.728 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
liveness it answered at all	0.60	1.00	0.879		0.528	0	−0.072
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.728	gap to 1.000 = 0.272 · 0.200 short · 0.072 uncertain	0.728	−0.200	−0.072

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

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.879   liveness       
+ 0.200 × 1.000   price stability
= 0.728           → UNRATED: 51 of 30 paid calls      weights 2026.09.6 · 51 samples · seed cap_01M1A5A5K08419B92PGE9T70S9|2026-08-27T04:29:23.238Z|2026.09.6

Verify it yourselfnpx teppi-check https://kairostamp.com/api/v1/change-checkcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5A5K08419B92PGE9T70S9