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# System prepended metadata

title: Summa - Weekly Sync-up Calls

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# Summa - Weekly Sync-up Calls

## 24th Apr

Enrico
- Currently, Debugging and [adding a faster hasher](https://github.com/summa-dev/merkle-sum-tree-rust/pull/1)
	- In the MST circuit, the instance of Poseidon hasher in PSE/halo2 drops the hash result
	- He opened a PR in PSE/halo2 to fix this issue
- High priority: [Improve Prover Performance](https://github.com/summa-dev/circuits-halo2/issues/9)
	- One approach is using a vertical method for custom gates instead of a horizontal one
- For the rest of the first iteration
	- Focus on [adding privacy for the proof of assets](https://github.com/summa-dev/circuits-halo2/issues/6)
	- Integrate the Axiom circuit with Summa

Jin
- One PSE member, blockdev, has been working separately on Vitalik's KGZ implementation in Halo2. It has not been shared yet, but it could be helpful for us
- Currently reviewing [the Merkle Sum Tree refactoring](https://github.com/summa-dev/circuits-halo2/issues/2)
- For the first sprint iteration, I will focus on [the KGZ commitment](https://github.com/summa-dev/circuits-halo2/issues/1) for inclusion checks