utxoCostPerWord in the ProtocolParameters needs to be renamed to utxoCostPerByte

[Jimbo4350]

No description provided.

[Jimbo4350]

In the Babbage era

[JaredCorduan]

for context, in case it's helpful: cardano-foundation/CIPs#265

[gitmachtl]

@JaredCorduan can the current tags/1.35.0 handle the change to utxoCostPerByte? will utxoCostPerWord go away with the change or will it stay for a while in parallel?

[JaredCorduan]

@gitmachtl the semantic change in the protocol is attached to the Babbage era, and will go into effect at the moment of the hardfork.

The cardano-api, however, is still translating the new Babbage parameter coinsPerUTxOByte into a "per word" value:

https://github.com/input-output-hk/cardano-node/blob/42809ad3d420f0695eb147d4c66b90573d27cafd/cardano-api/src/Cardano/Api/ProtocolParameters.hs#L1743

In other words, 1.35 is ready to move to the new min-utxo calculation when the hardfork happens, but the CLI will still convert the protocol parameter to be measuring words (not bytes), even though the new calculation will be used. This issue is to not make this conversion.

[gitmachtl]

ah ok thx, this explains why the miniprotocol is sending the CostPerByte value, thx!

[lehins]

If I understand correctly this renaming also needs to be applied to ProtocolParametersUpdate:

https://github.com/input-output-hk/cardano-node/blob/0cd6878769a10097e7c780e15efb9919fb94f669/cardano-api/src/Cardano/Api/ProtocolParameters.hs#L1304-L1305

[gitmachtl]

And the removal of the *8 😄