Roadmap

Current state

Cardano VCR is in the design phase. The underlying MPFS infrastructure is functional; the VCR protocol layer is being specified.

Available components

Component	Status	Description
cardano-mpfs-onchain	Working	Cage validators (Aiken, Plutus V3)
cardano-mpfs-offchain	Phase 4 complete	Indexer, TxBuilder, RocksDB state
haskell-mts	Working	CSMT + MPF trie implementations
cardano-utxo-csmt	Working	UTxO set Merkle tree, HTTP API

Gaps

Gap	Description	Blocking
MPFS HTTP API	Phase 5 of cardano-mpfs-offchain (Servant API, Docker deployment)	User-facing credential operations
VCR protocol	This repository — schema/credential encoding, proof bundle format	Everything above MPFS

Phase 1: Protocol specification

• Define schema encoding format (compatible with W3C credentialSchema)
• Define credential encoding format (all W3C required + optional fields)
• Define proof bundle format (for off-chain verification)
• Define verifiable presentation format (multi-credential bundles)
• Document resolver interface

Phase 2: Reference implementation

• Schema authority cage configuration (append-only policy)
• Credential issuer cage configuration
• TxBuilder extensions for VCR-specific operations
• Proof bundle serialization (CBOR)

Phase 3: Verification SDKs

• On-chain verification library (Aiken helper functions for Plutus validators)
• Off-chain verification library (Haskell, for proof bundle verification)
• Lightweight verification library (for mobile/browser, minimal dependencies)

Phase 4: Tooling and deployment

• CLI for schema registration and credential operations
• HTTP API for credential issuance, revocation, and verification
• Docker deployment (plutimus.com)
• Documentation and tutorials