Harmonic Laboratories (HLabs for short) is an R&D firm born and focused solely on the Cardano ecosystem.

Harmonic Laboratories supports and maintains a considerable portion of the TypeScript tooling for the Cardano ecosystem, which the majority of Cardano developers use, either directly, or indirectly via other libraries that depend on code written and maintained by HLabs.

The mission of HLabs is for true decentralization to become the baseline of application development, not only a nice-to-have feature.

This proposal funds Gerolamo, the first production-ready Cardano node that runs in the browser, at 5 FTE.

Cardano's eUTxO design and low-footprint protocol make it the only major blockchain where a fully-validating, in-browser node is technically realistic. This is not a research demo or a stripped-down SPV client; it is a real, fully-validating node. Shipping it turns a latent property of the protocol into a Cardano-specific competitive advantage that no other ecosystem can replicate without redesigning their base layer.

A separate proposal funds Pebble and ongoing TypeScript tooling maintenance at 5 FTE and is voted on independently.

Duration & Milestones

This proposal spans over 12 months, throughout which there will be several deliveries and demos. The key delivery is:

• a production-ready light node that runs in the browser (Gerolamo).

Total Budget Ask

The estimated USD budget is of $1,000,000 (or ₳4,000,000) + 15% in refundable contingency (₳600,000); for a total ask of 4,600,000 ADA.