Coinbase B20

What a B20 token is

Coinbase B20 tokens are tokenized stocks on Base issued via Coinbase Onchain SPV Ltd (ADGM). Each token is a beneficial-interest wrapper in deposited property — not a Robinhood Jersey debt token, and not registered shareholder title in the listed company. Wrapper symbols such as AAPLc and NVDAc map to cash underliers AAPL and NVDA. Identify the token by contract address, not by a mutable on-chain symbol.

Separate from RHJ

Do not mix Coinbase supply or basis with RHJ Asset Stock Tokens. Different issuer, different chain (Base, not Robinhood Chain 4663), different decimals, different inventory. This monitor shows B20 as its own ticket. Combined rank may take the max of venue scores; it does not sum the two supplies into one number.

On this site, circulating supply prefers on-chain totalSupplyUI() when that selector exists. The initial Coinbase set reverts it, so the live figure is totalSupply / 10^decimals. Asset tokens elsewhere use 6–18 decimals; Coinbase stocks report 8 — never decode as 18. Never multiply a UI figure again. Token basis is DEX mid / cash reference − 1 on a Base pair whose baseToken is the Coinbase contract.

What this is not

• Not the listed US share. No voting claim against the underlier issuer as if you held the cash stock.
• Not an RHJ Stock Token and not a Classic RHEU contract.
• Not an unofficial ticker copy. Authenticate the B20 contract against the seeded registry before mapping it to a US ticker.

See NVDA for a name that carries both an RHJ block and a Coinbase B20 block, labeled apart. Mechanics and rank rules: methodology.