Harmonic Labs

Making decentralized systems as mainstream as the browser on your phone.

[Harmonic Labs @hlabs_tech]

Harmonic Laboratories is a pioneering technology company at the forefront of blockchain and decentralized applications development.

Specializing in building innovative solutions on the Cardano blockchain.

[🪏 Michele | Harmonic @MicheleHarmonic]

Some even juicier optimizations coming up with @pebble_lang targeting plutus v4

Pebble is not only easy to write and read, but it's probably the best choice if you care about efficiency

Make sure you vote YES for it

[🪏 Michele | Harmonic @MicheleHarmonic]

Upgrading @pebble_lang to target PlutusV4

Make sure your DRep votes YES to get pebble ready to be used in production.

[🪏 Michele | Harmonic @MicheleHarmonic]

Documentation: https://t.co/xMxuHE0BML

Also this is work that I'm anticipating from the first milestone of the proposal, to make sure we deliver on time

[🪏 Michele | Harmonic @MicheleHarmonic]

Starting to implement some low-hanging fruit that is specified in the first milestone of the pebble proposal

In the next version of @pebble_lang you will be able to define contract states (datums) and spending methods only for that state (state transitions)

With pebble, you don't need to worry about matching datums and redeemers

You can just focus on your contract logic

[🪏 Michele | Harmonic @MicheleHarmonic]

I'm starting to see some "divergent votes" supporting pebble but not gerolamo.

Usually pointing to "we need more DeFi as rationale"

I agree, we need more DeFi

And that's why we need BOTH

Pebble & tools are needed to BUILD dapps

Gerolamo is needed to USE dapps

BOTH solve problems with no current solution

BOTH have the ultimate goal of improving the Cardano experience at 360

NOW GO VOTE!

Thank you for your attention to this matter.

[🪏 Michele | Harmonic @MicheleHarmonic]

Both proposals have been submitted

In an effort to contain treasury spending we have reduced our base ask by 125k USD *per proposal*

250k USD less in total

We also reduced the contingency from 25% down to 15%

We need all the community support we can get, don't wait to vote, we can't wait to start working 🫡

[agus 🐦‍⬛ 🇦🇷 @agustinenada]

Vote for Pebble + Gerolamo!!

Super important for Node Diversity, this is the proposal that brings Node Diversity to the browser.

Two days left!!

Supported by @IOHK_Charles 👏

[🪏 Michele | Harmonic @MicheleHarmonic]

BEHOLD A NODE IN THE BROWSER! 😱

soon coming to an extension store near you 😉

[🪏 Michele | Harmonic @MicheleHarmonic]

A light node is NOT a "nice to have"

A light node is the most basic piece of infrastructure for trustless access for the average user

A light node is THE ONLY WAY you can have the full security and decentralization of the blockchain AT YOUR FINGERTIPS

WITHOUT sacrificing UX
Actually, it will even IMPROVE UX

Picture unrelated

[🪏 Michele | Harmonic @MicheleHarmonic]

DID WE JUST SOLVE THE DREP COMPENSATION PROBLEM? 😱

We deployed a contract written in @pebble_lang that not only pays for the fee of your voting transaction

but also leaves you a tip to thank you for you efforts researching the proposal before voting.

You get the voting reward regardless of your vote, as long as you vote for the proposal.

This is a fully open-source, pebble smart contract, executing on mainnet 👀

Just remember that when you vote for it 😜

[🪏 Michele | Harmonic @MicheleHarmonic]

HLabs 2026 proposal, including Pebble and Gerolamo development, is on mainnet

link in the first comment 👇

we also have a special surprise for DReps that involves @pebble_lang

Just give me a couple minutes 👀

[🪏 Michele | Harmonic @MicheleHarmonic]

One of our HLabs engineers discussing and showcasing Gerolamo and Gerolamino (for the browser) at the @IOGroup client diversity workshop in Buenos Aires

[🪏 Michele | Harmonic @MicheleHarmonic]

We are experimenting with runnable examples on the pebble website 👨‍💻

the code you see is not typescript, is a smart contract programming language for Cardano

yes, even with for loops and mutable variables 🙈

Pebble is included in the HLabs budget proposal for 2026 👀

[M₳X 👷‍♂️ @maxalexweber]

A lot of people in Cardano don't appreciate the open source infrastructure & tools that makes this ecosystem actually usable for new developers.

So here's my perspective after shipping a full SAP-Cardano integration over the last few months.

With my Catalyst proposal I wanted to use the most advanced, modern stack available for connecting SAP to Cardano. Native, fast, secure. On the SAP side, it was clear that TS was really the only option that made sense. But on Cardano?

Do i had to learn Haskell first?

No.

Because people in this ecosystem built tools and libraries that let developers from other ecosystems work with Cardano without starting from zero.

Since I went with TypeScript, the biggest shoutout goes to @MicheleHarmonic and the entire @hlabs_tech stack with plu-ts, cardano-ledger-ts, and especially Buildooor as a native TS transaction builder. Not sure what I would have done without it. 👷

Buildooor is significantly easier to use than CSL, by the way. If you've worked with both, you know.

@blockfrost_io and Koios for Cardano APIs. Reliable, well-documented, and they just work.

@blinklabs_io for a dockerized Cardano CLI that I could just pull and use for signing tests. No local node setup, no hours of syncing. Just works.

@_KtorZ_ for Ogmios and its TypeScript client for a live WebSocket connection directly against a Cardano node.

And these are exactly the tools & areas we need to keep developing and funding if we want Cardano to be useful and play a role in the future.

Not more marketing. Not more governance drama.
Better developer tooling, node diversity and infrastructure.

And yes. Now is exactly the right time.
Thank you for your attention.

[Harmonic Labs @hlabs_tech]

At the cost of stating the obvious

Harmonic Laboratories does not have and never will have a token

Anyone that is releasing a token with our name is trying to scam you

Stay safe

[🪏 Michele | Harmonic @MicheleHarmonic]

At HLabs we are planning to submit our budget proposal for 2026 in about 2-3 weeks from now

Before then, I'd love for the community to share their feedback so that we can reflect it in the proposal

Below you find the current draft 👇

Your support is very much appreciated 🙏

[🪏 Michele | Harmonic @MicheleHarmonic]

How HLabs be moving around the Messari report 😭

[🪏 Michele | Harmonic @MicheleHarmonic]

btw gerolamo now comes as an executable

It doesn't do much, follows the chain and offers a minibf (subset of blockfrost) REST API interface

but if you want to play with it you can

https://t.co/vcS40RarL9

[🪏 Michele | Harmonic @MicheleHarmonic]

Everyday I see a coordinated effort to move away from the permissionless and trustless principles, from the tooling and infrastructure layer to the application layer

Everyday I see excuses and justification to rebuild the same financial model where a few entities do have the control over you

It is not enough to have a permissionless L1 but centralized applications on top

This is why we do what we do at Hlabs

Starting from the very bottom with Gerolamo up to applications like @gravitycardano

First principles cannot be compromised with

at any level