Endpoint · onchainGETkairostamp.com /api/v1/verify ?receipt_id=85cd424c-b68b-440e-8f4f-e02147799f30
Receipt verification: read-only hash-chain verification of one existing Kairostamp receipt id.
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Receipt verification: read-only hash-chain verification of one existing Kairostamp receipt id. Recomputes the canonical SHA-256 digest, compares it with the stored chain hash, checks linkage to the preceding entry and reports whether the entry is covered by an on-chain checkpoint. Performs no outbound fetch. Single GET query parameter (receipt_id).Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.001 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://kairostamp.com/api/v1/verify?receipt_id=85cd424c-b68b-440e-8f4f-e02147799f30
Seen
first 35 days ago · last 12 days ago
56 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
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
| 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_01M1A5ABSYRHAVWVQCGR5B8QGG|2026-08-27T07:39:51.021Z|2026.09.6
Verify it yourself
npx teppi-check https://kairostamp.com/api/v1/verify?receipt_id=85cd424c-b68b-440e-8f4f-e02147799f30curl -s https://api.teppi.xyz/v1/trust/cap_01M1A5ABSYRHAVWVQCGR5B8QGG