In 2025, the 15 million USD DEXX donation plan jointly initiated by Hong Kong HashKey Exchange implemented transparent fund allocation through blockchain technology. After a certain NGO used it, the time for funds to arrive was shortened from 7 days to 2 hours, and the trust of donors increased by 40%. This case marks the transition of cryptocurrency donations from "experimental exploration" to "large-scale application". By integrating the automatic execution of smart contracts and the privacy protection of zero-knowledge proofs, the trust mechanism of charitable donations is reconstructed.
Technical Architecture: Immutability of Blockchain and Smart Contracts
Tencent Cloud's "blockchain public welfare platform" adopts a three-layer smart contract architecture of "donation initiation-fund allocation-result feedback".
- Donation initiation : Users donate ETH through WeChat Mini Program, and the smart contract automatically generates a unique donation ID. After a certain university foundation is connected, the efficiency of donation record query is increased by 80%.
- Fund allocation : preset triggering conditions such as "disaster relief" and "education support". When a disaster area meets the condition of "rainfall > 500mm", the smart contract automatically transfers USDT to the local relief account. After a charity uses it, the fund disbursement time is shortened from 3 days to 2 hours.
- Result feedback : The recipient uploads the material receipt voucher to the blockchain, and the donor can view the flow of funds in real time. After a certain enterprise customer uses it, the transparency of the donation process is increased by 90%.
The "Anonymous Donation Agreement" of SERO public chain implements dual privacy protection through zk-SNARKs Technology.
- Donor anonymity : When an artist donates $2 million worth of NFTs, he hides his identity information through zero-knowledge proof to avoid public pressure caused by public donations.
- Grantee privacy : In the African medical project, the personal information of the grantee is stored through homomorphic encryption, and the risk of data leakage is reduced by 95% after being used by an international organization.
HashKey Exchange's "compliance workbench" integrates dynamic key sharding technology to complete donation audits without exposing the original data source. After being used by a multinational charity, quarterly compliance costs were reduced by 60%.
Practice compliance: cross-border donations and tax optimization
The European Union Anti Money Laundering Regulation requires:
- KYC Penetration : A platform uses DID authentication, combined with on-chain address correlation analysis, to identify high-risk transactions with 89% accuracy.
- Data Localization : HashKey Exchange deploys compliance nodes in Hong Kong to achieve cross-border data flow through cross-chain protocols. After being used by a multinational charity, the compliance review cycle was shortened from 6 months to 45 days.
CoinLedger's "Tax-Friendly Donation" Program:
- Capital Gains Tax Avoidance : A US user donates Bitcoin held for 2 years to avoid paying $230,000 capital gains tax and receives an equal amount of charitable tax credit.
- Smart contract tax reporting : A freelancer automatically generates donation vouchers through smart contracts, and the annual tax dispute rate is reduced to zero.
HashKey Exchange's "dynamic key sharding" technology supports tax declaration without exposing transaction details. After a high net worth client used it, tax compliance efficiency increased by 300%.