The Spanish Purple Cross (Creu Roja) has launched RedChain, a brand new blockchain-based help distribution system that guarantees real-time donor transparency with out revealing the identities of these receiving help.
The platform was developed in collaboration with Barcelona-based infrastructure supplier BLOOCK and zero-knowledge credential firm Billions Community and goals to digitize “your complete help lifecycle, from donation to cost,” in response to a launch shared with Cointelegraph.
It replaces paper vouchers and pay as you go playing cards with ERC-20 help credit issued on the Ethereum (ETH) blockchain. This credit score is delivered to your cell pockets by way of a fast response (QR) code to be used at taking part retailers.
Beneficiary information, together with names, contact data, and case information, is saved utterly off-chain inside Creu Roja’s proprietary methods. Public blockchains are used purely as a verification layer, pinning hashes, timestamps, and proof of transaction integrity moderately than non-public data.
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RedChain goals to separate transparency from identification
Whereas donors and directors can audit when and the place funds are allotted and spent, the system is designed to forestall events from reconstructing particular person identities from on-chain information.
sauce: Purple Cross
“Donors will be capable of see aggregated and verifiable details about how their funds are allotted and spent, together with how a lot was distributed throughout the program and when disbursements had been made,” a Creu Roja spokesperson instructed Cointelegraph. However “what donors won’t ever see is the identification and private circumstances of the beneficiaries.”
A spokesperson mentioned RedChain is “explicitly designed in order that transparency applies to flows and outcomes, not people, permitting the Purple Cross to be accountable to donors with out compromising the privateness or dignity of beneficiaries.”
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Humanitarians demand verifiable help flows
Creu Roja constructed RedChain in response to growing stress on humanitarian organizations to show that help can obtain its supposed targets with out turning susceptible communities into information sources.
“Individuals searching for help mustn’t have to decide on between receiving help and defending their privateness,” Francisco López Romero, chief know-how officer at Creu Roja Catalunya, mentioned in a launch.
Recipients obtain digital credit of their telephone wallets and pay by means of common checkouts, making transactions indistinguishable from common purchases and avoiding seen markers that point out somebody is an help recipient.
“We give them credit score and so they can store at grocery store chains that adjust to laws and comply with our program,” the spokesperson mentioned. “We can not exclude anybody attributable to technical limitations.”
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Blockchain as a notary for help
This method implements a hybrid belief mannequin. ERC-20 tokens signify the allotted help, whereas spending information and eligibility checks stay in an off-chain database linked to on-chain proofs.
BLOOCK describes its function as working a “blockchain as an authentication layer” structure, with cryptographic anchors permitting it to detect tampering with inside information with out exposing the underlying information.
BLOOCK CEO Lluis Libre instructed Cointelegraph: “All related state modifications are cryptographically mounted to the general public blockchain, so any subsequent modifications to inside information will instantly fail validation in opposition to the immutable on-chain proof.”
He mentioned blockchain basically “acts as a notary public, confirming the prevalence of an occasion with out revealing its content material or who was concerned.”
Billions Community, however, gives a zero-knowledge authentication layer that enables beneficiaries to show their eligibility and authorization with out disclosing their identification or attributes. Proof is saved within the consumer’s personal pockets, moderately than in a centralized identification registry.
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