[Spanish Red Cross Launches Blockchain-Based Aid System RedChain] Odaily Planet Daily News: The Spanish Red Cross has launched a blockchain-based aid distribution system called RedChain. The system is technically supported by BLOOCK and Billions Network and aims to digitize the entire process of managing aid from donation to distribution. RedChain uses ERC-20 tokens on the Ethereum blockchain to replace paper vouchers and prepaid cards. Beneficiaries can use QR codes via mobile wallets to make payments at partner merchants. Beneficiaries' identity information and case records are stored in the Spanish Red Cross's off-chain system, while the public blockchain is only used to verify transaction hashes, timestamps, and integrity proofs. This ensures transparency in the flow of donated funds while protecting the privacy of beneficiaries.