0age: Seaport, and protocol development with OpenSea

Into the Bytecode

0age is the Head of Protocol Development at OpenSea, and this was a conversation about Seaport, the new marketplace protocol for buying and selling NFTs.

0age takes us through a tour of the Seaport protocol, talking about how it's architected; how conduits and zones work; and we even get into the low level gas optimization work they've done on the contracts. I hope this can be a helpful resource for anyone looking to understand the Seaport protocol or anyone who's building with NFTs more broadly. I also consider 0age to be a true veteran of the space, and hearing him talk through the design of the protocol can be an educational experience in its own rights.

Timestamps:

1:42 why build Seaport

10:20 the Seaport architecture

12:44 EIP712 signatures

14:17 the global concept of a nonce

16:02 EIP1271 and bulk listings

17:18 the Executor and conduits

25:08 zones, additional rules that can be applied on top of an order

29:47 implementing English auctions via zones

32:17 layers of the stack

36:05 fulfillment

40:42 gas optimizations and understanding the low-level behavior of the EVM

58:40 the interaction between OpenSea the product and Seaport the protocol

01:07:06 criteria based items, and partial fills

01:17:50 ideas to build on top of Seaport