Marry3 introduction
Marry3 is an on-chain Dapp developed based on the ERC721-520 standard contract. Its core implements: Marry3 Certificate, implemented based on the ERC721-520 standard, has some special features, such as non-transferable, non-saleable, and one address can only have one Token at the same time. The Marry3 contract and Dapp realize the logic of payment and multi-signature verification (analogous to negotiating marriage proposals, negotiating divorce, etc. in the real world).