Accumulate: An identity-based blockchain protocol with cross-chain support, human-readable addresses, and key management capabilities. (arXiv:2204.06878v1 [cs.CR])

The Accumulate Protocol ("Accumulate") is an identity-based, Delegated Proof
of Stake (DPoS) blockchain designed to power the digital economy through
interoperability with Layer-1 blockchains, integration with enterprise tech
stacks, and interfacing with the World Wide Web. Accumulate bypasses the
trilemma of security, scalability, and decentralization by implementing a
chain-of-chains architecture in which digital identities with the ability to
manage keys, tokens, data, and other identities are treated as their own
independent blockchains. This architecture allows these identities, known as
Accumulate …

and key management blockchain human identity key key management management support