---
title: "Proof | Recovea"
description: "Re-derive a Recovea ledger chain in your browser, and see what an armed cap answers."
canonical: "https://recovea.ai/proof/"
source: "https://recovea.ai/proof/"
---

Ledger verifier

# Check the chain yourself.

Re-derived in your browser. Nothing is sent anywhere.

Sample month · rows 53,999 to 54,010 of 75,037

Alter one row

1. 53,999claude-sonnet-4-5$0.146862—Deriving
2. 54,000claude-sonnet-4-5$0.145392—Deriving
3. 54,001claude-sonnet-4-5$0.077398—Deriving
4. 54,002gpt-4.1-nano$0.000049—Deriving
5. 54,003claude-sonnet-4-5$0.170979—Deriving
6. 54,004claude-sonnet-4-5$0.073132—Deriving
7. 54,005claude-sonnet-4-5$0.189384—Deriving
8. 54,006claude-sonnet-4-5$0.164490—Deriving
9. 54,007claude-sonnet-4-5$0.063947—Deriving
10. 54,008claude-sonnet-4-5$0.075856—Deriving
11. 54,009claude-sonnet-4-5$0.132441—Deriving
12. 54,010claude-sonnet-4-5$0.082800—Deriving

Deriving.

The published recovea-chain-v1 recipe over the sample month’s ledger. Field order in the [docs](https://recovea.ai/docs/products/prove/).

The refusal

## An armed cap refuses the request before it reaches your provider, and answers 402.

Designed to fail open: if the gateway degrades, traffic goes straight to your provider. The only stop is a cap you armed.

[Read the contract](https://recovea.ai/docs/products/cap/)

- Status402
- Typeinsufficient_quota
- Codebudget_exceeded

Measured

- 2026-08-07580 of 580Probes answered 200 while a bad deploy rolled itself back. One drill, one service, not an availability claim.
- 2026-08-078m 42sTime for a deliberately broken revision to trip the alarm. It rolled back 43 seconds later.
- 2026-07-2541 rowsProduction receipts exported and re-derived outside our systems. The chain head matched.

Export

## Take the ledger and check it without us.

Export the chain and verify it offline, with a tool that has none of our code.

[Download the ledger](https://recovea.ai/proof/sample-chain.csv) — 75,037 rows. Regenerate the month from seed 20260831, hash it under the recipe, and the head is ed6c…0e57.

The same rows, off our machines.