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flag Spain’s Red Cross launches RedChain, a blockchain aid system using Ethereum and zero-knowledge proofs for private, verifiable donations and secure digital payments.

flag The Spanish Red Cross has launched RedChain, a blockchain-based aid system using Ethereum and zero-knowledge proofs to enable private, verifiable donations and digital payments. flag Recipients receive ERC-20 credits in mobile wallets, spendable at local merchants via QR codes, with personal data kept off-chain. flag Only cryptographic hashes and timestamps are recorded on the blockchain, ensuring transparency without exposing identities. flag The system uses decentralized identity verification and privacy-preserving credentials to confirm eligibility while preventing stigma, offering a secure, accountable alternative to traditional aid methods.

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