Updating Stake Pool Information
Important Reminder Any changes made in this section take effect in two epochs. A common mistake is lowering the pledge amount and removing funds too soon. This results in zero rewards as the current live pledge amount is no longer met.
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Need to change your pledge, fee, margin, pool IP/port, or metadata? Simply resubmit your stake pool registration certificate.
Reminder: There is no requirement to pay the 500 ADA stake pool deposit again.
First, generate the protocol-parameters.
block producer node
cardano-cli query protocol-parameters \
--mainnet \
--out-file $NODE_HOME/params.json
If you're changing your poolMetaData.json, remember to calculate the hash of your metadata file and re-upload the updated poolMetaData.json file. For more details, refer to the section Registering Your Stake Pool.
block producer node
cardano-cli stake-pool metadata-hash --pool-metadata-file poolMetaData.json > poolMetaDataHash.txt
If you changed your poolMetaData.json, copy poolMetaDataHash.txt to your cold environment.
Update the below registration-certificate transaction with your desired stake pool settings.
metadata-url must be no longer than 64 characters.
air-gapped offline machine
cardano-cli stake-pool registration-certificate \
--cold-verification-key-file $HOME/cold-keys/node.vkey \
--vrf-verification-key-file vrf.vkey \
--pool-pledge 1000000000 \
--pool-cost 345000000 \
--pool-margin 0.20 \
--pool-reward-account-verification-key-file stake.vkey \
--pool-owner-stake-verification-key-file stake.vkey \
--mainnet \
--single-host-pool-relay <dns based relay, example ~ relaynode1.myadapoolnamerocks.com> \
--pool-relay-port 6000 \
--metadata-url <url where you uploaded poolMetaData.json> \
--metadata-hash $(cat poolMetaDataHash.txt) \
--out-file pool.cert
minPoolCost is 340000000 lovelace or 340 ADA. Therefore, your
--pool-cost must be at a minimum this amount.Here we are pledging 1000 ADA with a fixed pool cost of 345 ADA and a pool margin of 20%.
Copy pool.cert to your hot environment.
Pledge stake to your stake pool.
air-gapped offline machine
cardano-cli stake-address delegation-certificate \
--stake-verification-key-file stake.vkey \
--cold-verification-key-file $HOME/cold-keys/node.vkey \
--out-file deleg.cert
Copy deleg.cert to your hot environment.
You need to find the tip of the blockchain to set the invalid-hereafter parameter properly.
block producer node
currentSlot=$(cardano-cli query tip --mainnet | jq -r '.slot')
echo Current Slot: $currentSlot
Find your balance and UTXOs.
block producer node
cardano-cli query utxo \
--address $(cat payment.addr) \
--mainnet > fullUtxo.out
tail -n +3 fullUtxo.out | sort -k3 -nr > balance.out
cat balance.out
tx_in=""
total_balance=0
while read -r utxo; do
type=$(awk '{ print $6 }' <<< "${utxo}")
if [[ ${type} == 'TxOutDatumNone' ]]
then
in_addr=$(awk '{ print $1 }' <<< "${utxo}")
idx=$(awk '{ print $2 }' <<< "${utxo}")
utxo_balance=$(awk '{ print $3 }' <<< "${utxo}")
total_balance=$((${total_balance}+${utxo_balance}))
echo TxHash: ${in_addr}#${idx}
echo ADA: ${utxo_balance}
tx_in="${tx_in} --tx-in ${in_addr}#${idx}"
fi
done < balance.out
txcnt=$(cat balance.out | wc -l)
echo Total available ADA balance: ${total_balance}
echo Number of UTXOs: ${txcnt}
Run the build-raw transaction command.
The invalid-hereafter value must be greater than the current tip. In this example, we use current slot + 10000.
block producer node
cardano-cli transaction build-raw \
${tx_in} \
--tx-out $(cat payment.addr)+${total_balance} \
--invalid-hereafter $((${currentSlot}+10000)) \
--fee 0 \
--certificate-file pool.cert \
--certificate-file deleg.cert \
--out-file tx.tmp
Calculate the minimum fee:
block producer node
fee=$(cardano-cli transaction calculate-min-fee \
--tx-body-file tx.tmp \
--tx-in-count ${txcnt} \
--tx-out-count 1 \
--mainnet \
--witness-count 3 \
--byron-witness-count 0 \
--protocol-params-file params.json | awk '{ print $1 }')
echo fee: $fee
Calculate your change output.
block producer node
txOut=$((${total_balance}-${fee}))
echo txOut: ${txOut}
Build the transaction.
block producer node
cardano-cli transaction build-raw \
${tx_in} \
--tx-out $(cat payment.addr)+${txOut} \
--invalid-hereafter $((${currentSlot}+10000)) \
--fee ${fee} \
--certificate-file pool.cert \
--certificate-file deleg.cert \
--out-file tx.raw
Copy tx.raw to your cold environment.
Sign the transaction.
air-gapped offline machine
cardano-cli transaction sign \
--tx-body-file tx.raw \
--signing-key-file payment.skey \
--signing-key-file $HOME/cold-keys/node.skey \
--signing-key-file stake.skey \
--mainnet \
--out-file tx.signed
Copy tx.signed to your hot environment.
Send the transaction.
block producer node
cardano-cli transaction submit \
--tx-file tx.signed \
--mainnet
Changes take effect in two epochs. After the next epoch transition, verify that your pool settings are correct.
block producer node
cardano-cli query ledger-state --mainnet > ledger-state.json
jq -r '.esLState._delegationState._pstate._pParams."'"$(cat stakepoolid.txt)"'" // empty' ledger-state.json
Last modified 6mo ago