MainNet Bellatrix Timing Options

Key Dates

11 August - Consensus layer call where fork epoch and TTD are agreed. Clients begin preparing releases.
18 August - DAG size increase takes 5gb mining cards out. Confirm fork epoch and TTD don't need to be changed on ACD
19 August - Release client versions with config included

Then give 2 weeks for users to upgrade and schedule Bellatrix fork epoch somewhere between Thursday 1 September and Tuesday 6 September.

Possible Fork Epochs

Can use the Upgrade Scheduler at https://slots.symphonious.net to help pick suitable epochs.

Note that (+1) in the times below indicate the time is the day after.

Thursday, 1 September

Note: This is likely just less than 2 weeks after client releases even if they are out very quickly after ACD.

Epoch Slot UTC New York Brisbane
143775 4600800 12:00:23 08:00:23 22:00:23
143780 4600960 12:32:23 10:32:23 22:32:23
143850 4603200 20:00:23 16:00:23 06:00:23 (+1)

Friday, 2 September

Upside: Fabulously round numbers.
Downside: Late Friday night for APAC.

Epoch Slot UTC New York Brisbane
144000 4608000 12:00:23 08:00:23 22:00:23
144080 4610560 20:32:23 16:32:23 06:32:23 (+1)

Monday, 5 September

Epoch Slot UTC New York Brisbane
144680 4629760 12:32:23 08:32:23 22:32:23
144750 4632000 20:00:23 16:00:23 06:00:23 (+1)

Tuesday, 6 September

Epoch Slot UTC New York Brisbane
144896 4636672 11:34:47 07:34:47 21:34:47
144900 4636800 12:00:23 08:00:23 22:00:23
145000 4640000 22:40:23 18:40:23 08:40:23 (+1)

Proposed to use epoch 144896, slot 4636672 as it aligns with the historical block root accumulator well.

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