https://wiki.polkadot.com/learn/learn-assets/
Asset Hub Overview - Polkadot Wiki
Learn about fungible tokens, NFTs, and asset management on Polkadot's Asset Hub.
asset huboverview polkadot
https://wiki.polkadot.com/learn/learn-hyperbridge/
Hyperbridge Overview - Polkadot Wiki
Explore Hyperbridge, Polkadot's innovative cross-chain interoperability solution, including its coprocessor model and underlying technologies.
overview polkadotwiki