common/packages/trie-db/README.md

@polkadot/trie-db

An Implementation of the Ethereum Merkle Patricia Tree that uses Blake2 for hashing.

Adapted from Ethereum

The has been adapted from the original EthereumJs implementation with the following changes -

• Introduce TypeScript into the mix
• ES6-ify as applicable (Classes, self -> this, function() {} -> () => {})
• Moves to a Promise-based interface (as applicable)
• Support only Uint8Array key/values (Buffer/String in the original)
• Use utilities from @polkadot/util
• Supports blake2 hashing (sha3 in the original), aligning with the Polkadot tech stack)
• Updated the build steps with sources moved to src/
• Tests updated to use Jest
• Upgrade interfaces to latest levelup
• Removed the secure interface (not applicable for Substrate chains)

... well at least the above is the idea behind the fork ...