Envelop is a flexible cross-chain tool set able to give any NFT new functionality (economic set-up, on-chain royalties, rental mechanism, time/value/event-locks), protection of devaluation and anti-fraud system. Now easily implemented in GameFi, Markeplaces, Art, Metaverces and NFT-rentals. Envelop consists of three parts:

1. Protocol to add the digital assets inside NFTs and set on-chain royalties;
2. Oracle to score the collateral and assess the quality of assets inside NFTs;
3. Index to hedge the position to whole NFT market — becomes one of the first decentralised and collateralised simultaneously market indices for NFT and related assets (synthetic, among others)."