Request receipt

Signature validSinal Rural

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

Consumption

Total tokens

58,689

23,475 prompt · 35,214 completion

Cost

$0.03

Model: @cf/google/gemma-4-26b-a4b-it
Executed at: 2026-09-20 20:31 UTC
Cup: Sinal Rural

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

Verify it yourself

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

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/01M3088HAN4HYGYVX0WTRZDACD");
  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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