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KES_period.md

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KES Periods

Before we can create a operational certificate for our stake pool, we need to figure out start of the KES validity period. We need to know how long a period is from the genesis file:

cat ff-genesis.json | grep KESPeriod
> "slotsPerKESPeriod": 3600,

So one period lasts 3600 slots. What slot are we currently in?

export CARDANO_NODE_SOCKET_PATH=node1-db/node-socket
cardano-cli shelley query tip --testnet-magic 42
> Tip (SlotNo {unSlotNo = 432571}) ...

Look for unSlotNo value. So in this example we are on slot 432571. For the current period we have:

expr 432571 / 3600
> 120

With this we are able to generate a operational certificate for our stake pool:

cardano-cli shelley node issue-op-cert \
    --hot-kes-verification-key-file kes1-002.vkey \
    --cold-signing-key-file node1.skey \
    --operational-certificate-issue-counter node1.counter \
    --kes-period 120 \
    --out-file node1-002.cert