The best alternatives to Cognomen are Create A Signature, WiseStamp, and AutographNFT. If these 3 options don't work for you, we've listed a few more alternatives below.
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WiseStamp allows companies and organizations to create and manage email signatures that look great and work flawlessly on all email platforms - no coding needed. The company's solution is ideal for both individuals and companies of all sizes looking to boost their brand presence.
AutographNFT.io is the 1st product built on @AlchemyNFT, it uses 2 components of AlchemyNFT: The EVM-based smart contracts and TokenScript Attestation. It enables anyone to get his/her NFTs signed by his/her favourite people. Make his/her NFTs more valuable.
Collect autographs on your iPhone and iPad by finger from celebrities and friends. Turn your camera on, record your screen in the app and collect autographs with recorded face (the moment of signing the autograph is captured).