
Brand Extender
Brand extender creates fully on-chain derivative NFTs from existing collections.

What is Brand Extender?
As part of a brand partnership, brand activation, or brand extension, Brand Extender allows any NFT with open IP rights to be used to create a fully on-chain derivative NFT or set of NFTs. It connects original NFT rights. It establishes IP, secondary market, and royalties for new and future NFT holders. Brand Extender can mint 1/1 pieces or entire derivative collections to partner, collaborate, support, or create royalties.
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ERC-4337 UserOperation packing vulnerability
On March 7th, 2023, Alchemy and members of the open source community, identified calldata decoding issues with the ERC-4337 EntryPoint contract and the example VerifyingPaymaster contract.

Introducing user operation overrides
User Operation Overrides give you fine grain control over gas fees. Gas fee markets move fast on L2s, and when that happens pending UOs might fail.
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