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  1. OpenSea is the world's first and largest web3 marketplace for NFTs and crypto collectibles. Browse, create, buy, sell, and auction NFTs using OpenSea today.

  2. Sep 26, 2022 · Opensea will help you auction or transfer the NFTs you own or build. There are some prerequisites for this tutorial. You must have the Metamask plugin installed on your browser and “Rinkeby testnet” network added to it.

  3. In order to interact with a smart contract on Ethereum, you will need to create an OpenSea account (or sign in with your existing wallet provider) and put some Ether in it. Start by going to the OpenSea testnet website and creating an account by clicking the "Login" button in the top right corner.

  4. The Polygon Amoy testnet is now live on OpenSea. Amoy replaces Mumbai as the Polygon Proof-of-Stake testnet chain based on Sepolia. Mumbai was based on Goerli, which is deprecated. You can now use the chain amoy in testnet API queries - please be sure you're on the testnets-api.opensea.io subdomain when interacting

  5. OpenSea is the world's first and largest web3 marketplace for NFTs and crypto collectibles. Browse, create, buy, sell, and auction NFTs using OpenSea today.

  6. Sep 2, 2022 · Web3 developer platform Alchemy announced that it has partnered with OpenSea and helped it go live on Ethereum Goerli testnet. Developers can start testing smart contracts on OpenSea on Goerli.

  7. Add a description, image, and links to the opensea-testnet topic page so that developers can more easily learn about it. Curate this topic

  8. May 16, 2022 · Our Testnets API is a great way to learn about the OpenSea API and get started with your own project. Check out the Testnets API documentation here! Developer Action: You no longer need to request an API key to use the Testnets API and can make calls to these endpoints without an API key.

  9. Newbie info idea: Use TEST NET first. Save gas and bandwidth on main net. Put this up on your page, sell it, gift it, spread the news. Fifth artpiece of the "Gallery Ery". Limited Edition.

  10. In this tutorial we will create a non-fungible token (NFT) and deploy to a public testnet. ERC721 is a standard for representing ownership of non-fungible tokens, that is, where each token is unique such as in real estate or collectibles. We will use Presets contracts in OpenZeppelin Contracts 3 to create an ERC721 and deploy using Remix.