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Signature validChuva Local

Signed by FullCup.ai. Anyone can check it, without trusting FullCup.ai.

Consumption

Total tokens

4,482,185

1,792,874 prompt · 2,689,311 completion

Cost

$2.42

Model: @cf/openai/gpt-oss-120b
Executed at: 2026-09-10 10:26 UTC
Cup: Chuva Local

A receipt never contains the prompt, the completion, or any user content. Only consumption metadata.

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The signing key is public, so the check does not depend on FullCup.ai.

How to verify

Technical details

Raw JSON for this receipt Signing key document

Work served: ms:ms-chuva-local-2
Price source: Measured by the model host, per request
Public key: 1rRTdW+PHO4U5qlhbmFjnMsvcm1Cih8ZRy1uZjxj1eU=

# canonical field order
["id","cup_id","key_id","model","prompt_tokens","completion_tokens","total_tokens","cost_micro_usd","price_source","upstream_id","workload_tag","created_at"]

node -e '
const https=require("https"),c=require("crypto");
const get=u=>new Promise(r=>https.get(u,s=>{let d="";s.on("data",x=>d+=x);s.on("end",()=>r(JSON.parse(d)))}));
(async()=>{
  const rec=await get("https://api.fullcup.ai/api/receipts/01M25DNWR0ZXX5W9JDDHKPYZK9");
  const wk=await get("https://api.fullcup.ai/.well-known/fullcup-signing-key");
  const ORDER=["id","cup_id","key_id","model","prompt_tokens","completion_tokens","total_tokens","cost_micro_usd","price_source","upstream_id","workload_tag","created_at"];
  const spki=Buffer.concat([Buffer.from("302a300506032b6570032100","hex"),Buffer.from(wk.public_key,"base64")]);
  const pub=c.createPublicKey({key:spki,format:"der",type:"spki"});
  console.log(c.verify(null,Buffer.from(JSON.stringify(rec.receipt,ORDER)),pub,Buffer.from(rec.signature,"base64")));
})()'

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