Miden 1.0.0-rc.0 Brings Major VM and Crypto Changes
Miden has released version 1.0.0-rc.0, a major update to its virtual machine, cryptography and proving tools. The release adopts Eidos as the VM’s native hash, changing some digests, verifier roots and proof formats. It also adds support for cryptographic features including SHA-512, Ed25519, P-256 and ECDSA P-256/SHA-256.
The Miden update introduces configurable limits for deferred precompile work and changes CLI defaults for creating and verifying proofs. It also includes security fixes for Keccak, multi-scalar multiplication, Merkle updates and loop control. Many changes are breaking: developers may need to rebuild packages, cached Merkle data and proofs, and update integrations. The release restores a standalone Poseidon2 API for existing applications, but Poseidon2 is not supported for VM proofs.
Neutral
The release is a substantial technical upgrade, but the article reports no token launch, exchange listing, funding event or direct change to market access. Its likely immediate impact on crypto prices and market stability is therefore limited. Traders may pay attention to Miden ecosystem activity, but the release alone does not establish a clear buy or sell catalyst.
In the short term, breaking changes and migration work could create friction for developers and applications that depend on older proof formats or stored Merkle data. Security fixes may improve confidence, although integrations will need to be updated and tested. Similar infrastructure releases often have a muted market response unless accompanied by measurable adoption, network usage or token-related news.
Over the longer term, the expanded cryptographic support, proving controls and security improvements could strengthen Miden’s developer tooling and ecosystem if teams adopt them successfully. Traders can monitor deployment progress, developer activity and any evidence of increased usage. Until such indicators emerge, a neutral assessment is most appropriate.