Register a Stake Pool with Metadata

Make sure you have access to:

File Content
payment.vkey payment verification key
payment.skey payment signing key
stake.vkey staking verification key
stake.skey staking signing key
stake.addr registered stake address
payment.addr funded address linked to stake
cold.vkey cold verification key
cold.skey cold signing key
cold.counter issue counter
node.cert operational certificate
kes.vkey KES verification key
kes.skey KES signing key
vrf.vkey VRF verification key
vrf.skey VRF signing key

Registering your stake pool requires:

  • Create JSON file with your metadata and store it in the node and in a url you maintain.

  • Get the hash of your JSON file

  • Generate the stake pool registration certificate

  • Create a delegation certificate pledge

  • Submit the certificates to the blockchain

WARNING: Generating the stake pool registration certificate and the delegation certificate requires the cold keys So, when doing this on mainnet you may want to generate these certificates in your local machine taking the proper security measures to avoid exposing your cold keys to the internet.

Create a JSON file with your pool’s metadata

  "name": "TestPool",
  "description": "The pool that tests all the pools",
  "ticker": "TEST",
  "homepage": ""

Store the file in a url you control. For example You can use a GIST in github, make sure that the URL is less than 65 characters long.

Get the hash of your metadata JSON file:

This validates that the JSON fits the required schema, if it does, you will get the hash of your file.

cardano-cli shelley stake-pool metadata-hash --pool-metadata-file pool_Metadata.json


Generate Stake pool registration certificate

cardano-cli shelley stake-pool registration-certificate \
--cold-verification-key-file cold.vkey \
--vrf-verification-key-file vrf.vkey \
--pool-reward-account-verification-key-file stake.vkey \
--pool-owner-stake-verification-key-file stake.vkey \
--mainnet \
--pool-relay-ipv4 <RELAY NODE PUBLIC IP> \
--pool-relay-port <RELAY NODE PORT> \
--metadata-url \
--metadata-hash <POOL METADATA HASH> \
--out-file pool-registration.cert
Parameter Explanation
stake-pool-verification-key-file verification cold key
vrf-verification-key-file verification VRS key
pool-pledge pledge lovelace
pool-cost operational costs per epoch lovelace
pool-margin operator margin
pool-reward-account-verification-key-file verification staking key for the rewards
pool-owner-staking-verification-key-file verification staking keys for the pool owners
out-file output file to write the certificate to
pool-relay-port port
pool-relay-ipv4 relay node ip address
metadata-url url of your json file
metadata-hash the hash of pools json metadata file

You can use a different key for the rewards, and can provide more than one owner key if there were multiple owners who share the pledge.

The pool-registration.cert file should look like this:

type: StakePoolCertificateShelley
title: Free form text

Generate delegation certificate pledge

To honor your pledge, create a delegation certificate:

cardano-cli shelley stake-address delegation-certificate \
--stake-verification-key-file stake.vkey \
--cold-verification-key-file cold.vkey \
--out-file delegation.cert

This creates a delegation certificate which delegates funds from all stake addresses associated with key stake.vkey to the pool belonging to cold key cold.vkey. If we there are many staking keys as pool owners in the first step, we need delegation certificates for all of them.

Submit the pool certificate and delegation certificate to the blockchain

To submit the pool registration certificate and the delegation certificates to the blockchain by including them in one or more transactions. We can use one transaction for multiple certificates, the certificates will be applied in order.

Draft the transaction

cardano-cli shelley transaction build-raw \
--tx-in <UTXO>#<TxIx> \
--tx-out $(cat payment.addr)+0 \
--ttl 0 \
--fee 0 \
--out-file tx.draft \
--certificate-file pool-registration.cert \
--certificate-file delegation.cert

Calculate the the fees

cardano-cli shelley transaction calculate-min-fee \
--tx-body-file tx.raw \
--tx-in-count 1 \
--tx-out-count 1 \
--mainnet \
--witness-count 1 \
--byron-witness-count 0 \
--protocol-params-file protocol.json

For example:

> 184685

Registering a stake pool requires a deposit. This amount is specified in protocol.json . For example, for Shelley Testnet we have:

“poolDeposit”: 500000000

Calculate the change for –tx-out

All amounts in Lovelace

expr <UTxO BALANCE> - <poolDeposit> - <FEE>

Build the transaction:

cardano-cli shelley transaction build-raw \
--tx-in <UTXO>#<TxIx> \
--tx-out $(cat payment.addr)+<CHANGE IN LOVELACE> \
--ttl <TTL> \
--fee <FEE> \
--out-file tx.raw \
--certificate-file pool-registration.cert \
--certificate-file delegation.cert

Sign the transaction:

cardano-cli shelley transaction sign \
--tx-body-file tx.raw \
--signing-key-file payment.skey \
--signing-key-file stake.skey \
--signing-key-file cold.skey \
--mainnet \
--out-file tx.signed

Submit the transaction:

cardano-cli shelley transaction submit \
--tx-file tx.signed \

Verify that your stake pool registration was successful.

Get Pool ID

cardano-cli shelley stake-pool id --verification-key-file cold.vkey

Check for the presence of your poolID in the network ledger state, with:

cardano-cli shelley query ledger-state --mainnet | grep publicKey | grep <poolId>