---
title: "State-Proof Verifier"
method: POST
path: "/v1/tools/verify_eth_state_proof"
tags: ["TODO_TAGS_REVIEW", "TODO_AP2_EXPORT_REVIEW"]
---

# State-Proof Verifier

`POST /v1/tools/verify_eth_state_proof`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/verify_eth_state_proof`
- Auth: none declared

Verifies an EIP-1186 (eth_getProof) account and storage Merkle-Patricia-Trie proof against a caller-supplied trusted state root using a pure-JavaScript keccak-256 plus RLP decoder and bounded trie walk. Zero-egress, no RPC call. Does not verify that the state root itself belongs to a real canonical block; consensus-proof (light-client header) verification is out of scope. Persona: fund administrator or auditor confirming tokenized-MMF or deposit-token holdings without trusting an RPC provider.

**Tool URL:** https://ainumbers.co/chaingraph/art-279-state-proof-verifier.html

## Request body

- object
  - `account_proof` unknown[], required
    - unknown
  - `address` string: type not evidenced by kernel source
  - `block_state_root` string: type not evidenced by kernel source
  - `storage_slots` unknown[], required
    - unknown

## Response `200`

Successful tool execution result

- object
  - `account` string
  - `account_exists` boolean
  - `address` string
  - `block_state_root` string
  - `bounded_limits` object
    - `max_account_proof_nodes` integer
    - `max_node_hex_len` integer
    - `max_storage_proof_nodes` integer
    - `max_storage_slots` integer
  - `diagnostic` string
  - `errors` string[]
  - `proof_nodes_consumed` integer
  - `receipt_statement` string
  - `regulatory_note` string
  - `storage_results` unknown[]
    - unknown
  - `verdict` string

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)