attest

Witness the SHA-256 fingerprint of a literary work: submit a title, content hash, and optional pen name; receive a tamper-evident, hash-chained receipt.

Witness the SHA-256 fingerprint of a literary work: submit a title, content hash, and optional pen name; receive a tamper-evident, hash-chained receipt. Timestamping, not endorsement. We never see the work itself.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.05 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x19ea1e95…b964c53d

URL

https://www.pennypress.org/witness/attest

MCP server on this host: io.github.con-scribe/penny-press

Seen

first 8 days ago · last 14 hr ago

8 free handshakes

Payment

Pays through

x402 · MPP x402

Offered on?

Base USDC

Listed on?

Base

Buy it through Teppi

?Pay on delivery: 0.055000 USDC (0.050000 to the seller, 0.005000 fee)
Where: https://api.teppi.xyz/v1/via/cap_01M4Z1JX47C1X0KCPRJKHVVFQE
?Ask the price: curl -si -X POST https://api.teppi.xyz/v1/via/cap_01M4Z1JX47C1X0KCPRJKHVVFQE -H 'content-type: application/json' -d '{}'

About

?Description

URL

https://www.pennypress.org/witness/attest

Method

POST

Class

compute

?Checkable to

Endpoint id

cap_01M4Z1JX47C1X0KCPRJKHVVFQE

?Badge

Reads live. UNRATED until paid calls earn a letter.

Markdown: [![Teppi](https://api.teppi.xyz/badge/cap_01M4Z1JX47C1X0KCPRJKHVVFQE.svg)](https://teppi.xyz/endpoint/cap_01M4Z1JX47C1X0KCPRJKHVVFQE)
HTML: <a href="https://teppi.xyz/endpoint/cap_01M4Z1JX47C1X0KCPRJKHVVFQE"><img src="https://api.teppi.xyz/badge/cap_01M4Z1JX47C1X0KCPRJKHVVFQE.svg" alt="Teppi delivery record"></a>
Image: https://api.teppi.xyz/badge/cap_01M4Z1JX47C1X0KCPRJKHVVFQE.svg

Verify it yourselfnpx teppi-check https://www.pennypress.org/witness/attestcurl -s https://api.teppi.xyz/v1/trust/cap_01M4Z1JX47C1X0KCPRJKHVVFQE