Request receipt

Signature validCoro Aberto

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

Consumption

Total tokens

121,368,069

48,547,227 prompt · 72,820,842 completion

Cost

$65.54

Model: @cf/google/gemma-4-26b-a4b-it
Executed at: 2026-08-25 16:29 UTC
Cup: Coro Aberto

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/01M0WW2GD6FWKFW8WNV0RD6G7X");
  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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