No black box. Just addresses.
CAPX is a thin, honest interface over machinery that already exists on Base. Here is exactly what it reads, and where you can check it yourself.
The issuer mints a B20 token
A regulated issuer holds the underlying share and mints a matching B20 token on Base. B20 extends ERC-20 for real-world assets and is asset-agnostic. These tokens are native precompiles rather than separately deployed contracts, audited by Base and Spearbit with ongoing Cantina and HackerOne bounty coverage.
Chainlink publishes a total-return mark
Each asset has a Chainlink feed on Base reporting price × multiplier, WAD-scaled, running 24/5 and freezing through corporate actions. CAPX reads updatedAt on every round and flags a feed that has missed a session instead of showing you a confident number that isn't.
Corporate actions move the multiplier
Splits and dividends do not rewrite balances. They adjust a WAD-precision multiplier, so one token is not permanently one share. CAPX applies the current multiplier everywhere a share count appears — portfolio quantities use scaledBalanceOf, and supply figures are multiplier-adjusted share-equivalents.
Policies gate transfers, not holding
Onchain policy registries enforce allowlists and blocklists, and a transfer to a sanctioned address reverts. Holding and secondary transfer are otherwise permissionless — KYC applies at mint and redeem with the issuer, not between wallets.
CAPX reads, you sign
Prices, supply and balances are read straight from Base. Trades are routed by aggregating every venue on the chain — Aerodrome concentrated liquidity, Uniswap v3 and v4, PancakeSwap — because equity liquidity moves between them and no single pool tells the truth. Every fill is checked against the Chainlink mark before it is offered, and CAPX refuses to route anything more than 15% away from it.
Every B20 address begins 0xb2 — they are native precompiles on Base, not deployed bytecode.
Straight answers
Is one token one share?
No. Redemption applies the current onchain multiplier, which absorbs splits and dividends. CAPX shows the multiplier on every asset page and adjusts every share count it displays.
Why does an asset show zero onchain supply?
The Chainlink feed is live for all thirteen assets, but tokens are only minted as demand arrives. A supply of zero means nothing has been minted on Base yet — the mark is still real, there is just nothing to trade against.
Why can't I trade every asset?
Secondary trading needs minted supply and a venue holding it. Four assets route today at roughly the oracle mark; the rest have nothing minted on Base yet, so CAPX marks them mint-only rather than inventing a fill. The markets table labels each one.
Who can use this?
Tokenized equities are not available to US persons. Connect your own wallet and CAPX holds nothing. Fund an account with Tanzanian shillings and CAPX holds those assets for you, recording your entitlement in its own ledger — that is custody, and it is the trade-off for not needing a wallet. Nothing here is investment advice.