## Description

There are two changes proposed here:
1. A runtime upgrade of Coretime system chain to 1.6.0.
2. Increasing the number of cores from 66 to 100.

The runtime upgrade is meant to fix the current Coretime [situation](https://forum.polkadot.network/t/april-2025-coretime-purchase/12526) on Polkadot. It does this by the following:

1. We configure a minimum price of 10 DOT, to prevent prices to drop to unreasonable low values, which cause the system to take forever to recover in case demand picks up.
2. Renewals are now no longer completely decoupled from the market, but will be adjusted to cost at least the end price of the current sale. Immediate effect will be that renewals will be adjusted to the minimum price too.

Details are outlined in https://github.com/polkadot-fellows/RFCs/pull/149.

Some fellowship members had a call with all parachain teams describing changes of RFC-149 in detail and from what I know they were on board and want the coretime issue get fixed.

The enactment block of the proposal was chosen to be https://polkadot.subscan.io/block/26803000.
Note however, that both changes will take place in the next sale period after the enactment, which is around July 25/26.

## Build

```
opengov-cli build-upgrade --network polkadot --only --coretime "1.6.0"
# modify the build call to 0x630004000100b50f04082f0000060202eb4353e21a0600a428020800095b5a86cc8055e729b7b8660f2f551d8bfe6712b24d2e637a0624444addcc8d2e32128c00
opengov-cli submit-referendum \
    --proposal "0x630004000100b50f04082f0000060202eb4353e21a0600a428020800095b5a86cc8055e729b7b8660f2f551d8bfe6712b24d2e637a0624444addcc8d2e32128c00" \
    --network "polkadot" --track whitelistedcaller --at 26803000
```

#1629 Upgrade Coretime system chain to 1.6.0 and 100 cores

No Active Proposals