Seaport is the order-settlement protocol behind OpenSea and a number of other marketplaces: offers and considerations are signed off chain and matched on chain, so a listing costs nothing until it fills. Version 1.6 is deployed on Robinhood Chain at the same canonical address it uses elsewhere. Separately, DefiLlama credits OpenSea’s DEX aggregator with $1.56M over 24 hours and $102.9M all time on this chain on 18 September 2026.

opensea.io · @opensea

Seaport contracts on Robinhood Chain

• Seaport 1.6 0x0000000000000068f116a894984e2db1123eb395

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