# Trust

> Open the receipt. Understand its source, method, claimed checks and limits.

Markdown copy of https://voltfin.vercel.app/trust

## Don’t trust. Open the receipt.

A receipt records a number’s source, request, block and method. Its hash detects changes to that record. Fresh verification must check the evidence independently.

## The Proof Ladder

An educational guide to evidence categories. A derived value takes its weakest input’s level. AI never raises a level.

| Level | Meaning |
| --- | --- |
| L0 Sourced | Named origin and observation time. |
| L1 Traced | Exact request and response identity. Third-party APIs stop here. |
| L2 Reproducible | The exact call, pinned to a block hash. |
| L3 Cross-verified | Matching bytes at the same hash from independent provider families, with no successful dissent. |
| L4 Proven | A verified state witness and header binding for the exact returned value. Consensus anchoring is separate. |

## Name the source

Declared provider metadata from the configured registry. These are declarations, not a current health test or an audited independence guarantee.

| Chain | Provider | Family label | Archive flag | Proof flag |
| --- | --- | --- | --- | --- |
| Ethereum | dRPC | drpc | Declared | Declared |
| Ethereum | MEV Blocker | cow | Declared | Declared |
| Ethereum | Tenderly | tenderly | Declared | Not declared |
| Ethereum | Sentio | sentio | Declared | Not declared |
| Ethereum | Pocket | pocket | Declared | Not declared |
| Ethereum | PublicNode | allnodes | Not declared | Declared |
| Ethereum | thirdweb | thirdweb | Declared | Not declared |
| Ethereum | Blockscout | blockscout | Declared | Not declared |
| Base | Base | coinbase | Declared | Declared |
| Base | dRPC | drpc | Declared | Declared |
| Base | Tenderly | tenderly | Declared | Not declared |
| Base | Sentio | sentio | Declared | Not declared |
| Base | Pocket | pocket | Declared | Not declared |
| Base | PublicNode | allnodes | Not declared | Declared |
| Base | thirdweb | thirdweb | Declared | Not declared |
| Arbitrum One | Tenderly | tenderly | Declared | Not declared |
| Arbitrum One | Sentio | sentio | Declared | Declared |
| Arbitrum One | thirdweb | thirdweb | Declared | Declared |
| Arbitrum One | Arbitrum | offchain-labs | Not declared | Declared |
| Arbitrum One | dRPC | drpc | Not declared | Declared |
| Arbitrum One | Pocket | pocket | Declared | Declared |
| Arbitrum One | PublicNode | allnodes | Not declared | Not declared |
| OP Mainnet | Optimism | op-labs | Declared | Declared |
| OP Mainnet | dRPC | drpc | Declared | Declared |
| OP Mainnet | Tenderly | tenderly | Declared | Not declared |
| OP Mainnet | Sentio | sentio | Declared | Not declared |
| OP Mainnet | thirdweb | thirdweb | Declared | Not declared |
| OP Mainnet | PublicNode | allnodes | Not declared | Declared |
| Polygon PoS | dRPC | drpc | Declared | Declared |
| Polygon PoS | Tenderly | tenderly | Declared | Not declared |
| Polygon PoS | Sentio | sentio | Declared | Not declared |
| Polygon PoS | QuickNode | quicknode | Declared | Not declared |
| Polygon PoS | PublicNode | allnodes | Not declared | Declared |
| Polygon PoS | thirdweb | thirdweb | Declared | Not declared |
| Tron | TronGrid | trongrid | Not declared | Not declared |
| Tron | PublicNode | allnodes | Not declared | Not declared |

- **DefiLlama.** Third-party reference in existing Studio paths. No fetch or quoted figure is enabled on this landing page.
- **DexScreener.** Existing Studio market/indexer paths. No landing integration or republication permission is asserted.
- **Blockscout.** Configured explorer/indexer and selected RPC paths. Hosted-service and software rights are distinct.
- **Sourcify and signature services.** Contract/ABI ecosystem. No new site lookup or database-rights claim.
- **Tron providers.** Latest-only supply observations in supported Studio methods, with named source limitations.

## Limits travel with the number

### This page shows a historical claim

The example’s original body hash is checked for integrity. Its stored checks and claimed level have not been verified here.

### The landing reads only a chain head

The landing page polls the Base head in your browser. It does not run a fresh reconciliation or offer storage proof verification; those happen in Studio.

### A state proof has a narrow scope

A supported storage witness concerns a returned value and its block binding. It does not establish off-chain reserves, economic value or every behavior of a contract.

### Tron supply reads cannot pin a historical block

The current Tron adapter returns a latest-only observation. Do not compare it as a same-block EVM proof.

### Provider capability varies

An endpoint declaration is not a fresh health, archive, proof-support or organizational-independence audit. A missing result remains missing.

### The receipt registry is browser-local

Supported local tools retain receipts in browser memory and can pin selected receipts to local storage. Managed publication, account sync and retention promises are separate launch work.

### Coverage is method-specific

The configured chain registry covers EVM networks and Tron. This landing build does not read Solana or provision warehouse datasets.

### AI does not create evidence

Supported Studio answers use receipt validation, with source and implementation limits. The model-assisted launch is under review; the landing does not run a model.