PassionProof Uses Solana Token-2022 to Create Non-Transferable Open Source Badges

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A developer has built PassionProof, a Solana-based program that mints soulbound NFT badges to permanently recognize open source contributions. Each badge uses the Token-2022 NonTransferable extension, meaning any transfer attempt is rejected at the protocol level rather than by application logic. Metadata, including a specific reason field describing the milestone earned, is stored directly on the mint account with no reliance on external programs. The project was created for the DEV Community Weekend Challenge and has been deployed and tested on Solana devnet. The developer, a self-taught programmer with a Biochemistry background, built the tool to make contribution records permanent and verifiable beyond a traditional resume.

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