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Hydra update
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noonio committed Oct 17, 2024
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---
title: Hydra Team Update
slug: 2024-10-17-hydra
authors: [noonio]
tags: [hydra]
hide_table_of_contents: false
---

### High-level summary

The last few weeks have seen a solid amount of work and changes to the
user-facing side of Hydra; namely great progress on incremental commits and
using Aiken for our commit validator which has [yielded size/cost
savings](https://github.com/cardano-scaling/hydra/pull/1680#issue-2565734963).
This has also allowed us to support PlutusV3 validators and keep up to date
with the cardano-api. We also made a breaking change (improvement) to the
server output `SnapshotConfirmed` to make it easier to work with signed
snapshots. Finally, we made good progress on blockfrost support by adding an
option to follow the chain via blockfrost, instead of through a cardano-node.
Next up we continue our focus on incremental commits and general improvements,
while planning the next release.

### What did the team achieve?

* Added the raw CBOR datum in transaction outputs [#1543](https://github.com/cardano-scaling/hydra/issues/1543)
* Used Aiken for commit validator [#1680](https://github.com/cardano-scaling/hydra/pull/1680)
* Updated to cardano-api 9.4 [#1706](https://github.com/cardano-scaling/hydra/pull/1706)
* Implemented the off-chain user journey for incremental commits [#1522](https://github.com/cardano-scaling/hydra/issues/1522)
* Documentation on the incremental commits feature [#1704](https://github.com/cardano-scaling/hydra/pull/1704)
* Some cleanup of unused modules and functions
* Full transaction information in `SnapshotConfirmed` event [#1685](https://github.com/cardano-scaling/hydra/pull/1685)
* Added blockfrost mode to hydra-chain-observer [#1631](https://github.com/cardano-scaling/hydra/pull/1631)

### What's next?

* Continued work on incremental commits [#199](https://github.com/cardano-scaling/hydra/issues/199)
* Improvements to memory usage [#1618](https://github.com/cardano-scaling/hydra/issues/1618)
* DevEx improvements to split out components of the `hydra` monorepo
* Start to plan the [0.20.0 release](https://github.com/cardano-scaling/hydra/issues?q=is%3Aopen+is%3Aissue+milestone%3A0.20.0)

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