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THE PRE-TRADE VERIFICATION LAYER ON BASE

Know what you’re
really trading.

From token identity to the market behind it.
Six evidence topics across five Guard checks.

Read-only. No approvals. Your keys stay yours.

THE VERIFICATION LAYER06 EVIDENCE TOPICS / BASE MAINNET
01Identity
02Shares
03Price
04Transfers
05Wallet
06Market
ONE EXPLAINABLE RESULT
INDEPENDENT BY DESIGNScroll to see what’s underneath BUILT ON EVIDENCE

Live Chainlink reference prices

THE QUESTION BEFORE THE TRADE

A ticker is a starting point.
Evidence is what comes next.

You found a tokenized stock. Before you take a position, follow it from its contract to its market — and see what B20Stocks actually verifies.

Evidence topic 1 of 6: Token identity. A familiar name proves nothing. B20Stocks matches the contract address to the canonical token registry, so a copied ticker cannot pass as the real asset. Evidence source: Canonical B20 token registry.

THE ANATOMY OF A GUARD CHECKSkip to the result

TOPIC 01 / 06

Is this the real token?

Start with the original.
Not the imitation.

A familiar name proves nothing. B20Stocks matches the contract address to the canonical token registry, so a copied ticker cannot pass as the real asset.

EVIDENCE SOURCE

Canonical B20 token registry

GUARD REPORTILLUSTRATIVE
N
NVDAcNVIDIA tokenized stock
Base
Building the evidence trail1 / 6 topics
  1. 01
    Token identityCanonical contract matched
  2. 02
    Share valueAwaiting this topic
  3. 03
    Price healthAwaiting this topic
  4. 04
    Transfer statusAwaiting this topic
  5. 05
    Wallet eligibilityAwaiting this topic
  6. 06
    Verified market routeAwaiting this topic
EVIDENCE IN PROGRESS

Follow each evidence topic as you scroll

Illustrative example. Run a check for current evidence.

SCROLL TO CONTINUE

01 / Token identity

Start with the original. Not the imitation.

A familiar name proves nothing. B20Stocks matches the contract address to the canonical token registry, so a copied ticker cannot pass as the real asset.

Evidence source: Canonical B20 token registry

02 / Share value

Your balance. In actual share terms.

Token units and share equivalents aren't always the same. We read the current multiplier and your raw balance, then show how one becomes the other.

Evidence source: B20 balance + multiplier

03 / Price health

A price has a source. And an expiry.

We inspect the official Chainlink reference feed for validity and freshness. A stale or unavailable reference blocks verification, even when the displayed number looks plausible.

Evidence source: Official Chainlink reference feed

04 / Transfer status

An authentic asset. Can still be paused.

The issuer can pause token transfers. B20Stocks reads the token's transfer status before treating an active market as evidence that the asset can move.

Evidence source: B20 token contract · isPaused

05 / Wallet eligibility

The token can move. Can it move to you?

We check the wallet against the token's receiving policy. No wallet, missing authorization, or inconclusive data remains unresolved. It never becomes an assumed pass.

Evidence source: B20 PolicyRegistry · isAuthorized

06 / Verified market route

The asset is one thing. The market is another.

We inspect the registry-verified direct USDC route, its liquidity, and a read-only quote simulation. A missing verified route is disclosed; it isn't proof that no market exists elsewhere.

Evidence source: Verified DEX registry + onchain simulation

THE POINT ISN’T A GREEN LIGHT.

It’s knowing
where you stand.

Every result includes the evidence, its source, and a plain-language reason. A clean result is information, never a recommendation to trade.

READY

The checks passed.

The evaluated evidence is confirmed. Review the report before making your own decision.

!   CAUTION

Something needs a closer look.

A material concern needs attention. The report explains it, including a route that could not be registry-verified.

×   BLOCKED

The evidence isn’t enough.

A check failed or required data could not be confirmed. Missing information never turns into a pass.

FROM UNDERSTANDING TO ACTION

Your next move.
In three steps.

  1. 01

    Choose the asset.

    Select a tokenized stock. Add an address for wallet-specific evidence.

    Explore stocks
  2. 02

    Read the report.

    Run a Guard Check and inspect the result, its sources, and anything unresolved.

    Open Guard Check
  3. 03

    Decide for yourself.

    If you choose to trade, continue on a supported external platform. Execution stays outside B20Stocks.

    Always read-only

CLEAR BOUNDARIES. BETTER DECISIONS.

A guard for your process.
You stay in control.

What is a tokenized stock?

An equity issued onchain on Base using the B20 token standard — not custody of the actual shares, but an onchain representation of their economics, including a multiplier that adjusts for corporate actions like splits or dividends.

Source: Base's official B20 specification

What is B20?

Base's own token standard — an extension of ERC-20 designed to be asset-agnostic. Tokenized stocks are one use case; the same standard is built to support other real-world assets too.

Source: Base's official B20 specification

Does B20Stocks trade or hold my assets?

No. B20Stocks reads onchain information and simulates supported market quotes without submitting a trade. It does not request token approvals or take custody.

Why six evidence topics across five Guard checks?

Guard Check displays five checks: token identity, share value, price health, transfer eligibility, and the verified market route. This story explores six evidence topics because transfer status and wallet eligibility are two parts of the same transfer eligibility check.

What if a market route isn’t verified?

It means B20Stocks has no registry-verified direct USDC route for that stock. It does not mean the token cannot be traded elsewhere. The result explains this distinction.

Is this an official Coinbase or Base product?

No. This is an independent experimental project, not affiliated with or endorsed by Coinbase or Base. It has not been audited and does not provide investment advice.

FIVE GUARD CHECKS. YOUR DECISION.

Before the trade.
Find the proof.

Run a Guard Check

Independent verification for tokenized stocks on Base.

B20Stocks

Less assumption. More evidence.

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THE INDEPENDENT VERIFICATION LAYER.

Independent project. Not affiliated with, endorsed by, or operated by Coinbase or Base. Informational only; not investment advice. B20Stocks does not execute trades.

Tokenized stocks are available only to eligible persons in permitted jurisdictions outside the United States. Confirm eligibility with the issuer and venue. Experimental software. No audit has been performed. Use at your own risk.

© 2026 B20StocksBASE / ETHEREUM L2