<center> <h1>DIDEm</h1>

A simple distributed storage register and p2p messaging service for Decentralised Identities (DID) and Verifiable Claims (VC).

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State

Very much NOT production ready.

Components

Storage

The underlying storage mechanism for the blockchain data is IPFS (Interplanetary File System). IPFS has been chosen for its content-based addressing which is perfect for storing blockchain components.

Node Communication

libp2p provides the multiplexing and p2p components for all internode communication. For the blockchain, gossipsub messaging relays the consensus and block information between each peer.

Blockchain

The blockchain is loosely based on the TenderMint consensus algorithm to provide a simple and efficient agreement on top of permissioned nodes. The blockchain provides a simple storage agreement protocol for recording DID and VC's within IPFS as well as maintaining the active or revoked state of the records.

Each consensus round only has 1 proposer. The round proposers are selected via an external randomness beacon provided by drand.

Blocks contain transactions of an action to add, update or remove DIDs, VCs or nodes, all of which require a cryptographic signature, checked by a validator.

DID/VC & Messaging

The DID and VC data structures are directly taken from the w3c specifications for DIDComm, DID and VC's.

Running

You may use DIDEm by running directly using go or run in a container runtime from the image ghcr.io/tcfw/didem:main (amd64 or arm64)

Configuration

TBC

Contributing

TBC

License

Please see LICENSE file.