Endpoint · computePOSThash-hmac.underscoredone.com/hash

Give this API any text or binary data and it returns its fingerprint under whichever hash algorithms you choose - SHA-256, SHA-512, MD5, BLAKE2, CRC32 and more.

Give this API any text or binary data and it returns its fingerprint under whichever hash algorithms you choose - SHA-256, SHA-512, MD5, BLAKE2, CRC32 and more. It also signs data with a secret key (HMAC) and safely verifies whether an incoming signature matches, using a timing-safe comparison. Language models cannot hash: they emit a string of the right length and character set that is simply wrong, so every webhook check built on a guessed hash is silently broken.

UNRATEDListed

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?

0xe9740820…0e2c2f08

URL

https://hash-hmac.underscoredone.com/hash

Seen

first 29 days ago · last 15 hr ago

54 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC, Solana

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.729 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.271: 0.071 uncertain ? + 0.200 short ? · 0.071 to B

How the composite of 0.729 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	0.882		0.529	0	−0.071
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.729	gap to 1.000 = 0.271 · 0.200 short · 0.071 uncertain	0.729	−0.200	−0.071

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 × 0.882   liveness       
+ 0.200 × 1.000   price stability
= 0.729           → UNRATED: 52 of 30 paid calls      weights 2026.09.6 · 52 samples · seed cap_01M1RD8D2KAY4DAT0MVTRKQXMP|2026-09-03T03:21:57.983Z|2026.09.6

Verify it yourselfnpx teppi-check https://hash-hmac.underscoredone.com/hashcurl -s https://api.teppi.xyz/v1/trust/cap_01M1RD8D2KAY4DAT0MVTRKQXMP