Signed option quotes for Coinbase stocks on Base

Every 15 minutes a pricing agent reads each Chainlink "Coinbase" stock feed on Base, measures realized volatility from the feed's own rounds, and signs a reference quote for a one week call and a one week put near 20 delta.

Loading the latest signed set...

TickerSpotRealized volCall strikeCall premiumPut strikePut premiumExpiry (UTC)
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Call premium is in basis points of the stock notional, paid in the stock. Put premium is in basis points of the strike cash. The sale window is in US session hours only (weekdays 14:35 to 19:55 UTC, never on a US market holiday); outside those hours it is 0, which cannot open a sale. Whether a feed is printing right now: feed status.

Use it



Endpoints: /api/quotes (all tickers, add ?verify=1 to have the edge recover both signers), /api/quotes/{TICKER}, /api/quotes/history, /api/signer, /verify.py, /stats (public read counter). The original TSLAc covered call quote is unchanged at /api/quote.



Check it yourself


    

  1. sha256(signed_payload_canonical) equals attestation_hash, and the EIP-191 signature over it recovers to 0x9653Bf177239C979921DC8C0639eD00409F4Db88.
    2. 

  2. Each quote is an EIP-712 OptionQuote. Their struct hashes are the leaves of a Merkle tree (sorted pairs, OpenZeppelin MerkleProof); one EIP-712 QuoteBatch signature covers the root, and each quote carries its proof.
    3. 

  3. python -I verify.py --multi re-reads every feed round at the signed block on a different public RPC and recomputes volatility, strikes and premiums with its own integer math.
    4.