ETHAddress.md

Ethereum Account on ChainLink

Read this first

Please make sure that you have the PRIVATE_KEY_PASSWORD variable set within your .env file BEFORE running the rake oracle:initialize command to initialize the database.

If you ran the initialization command before making sure that your private key password was what you want it to be, you will need to drop the nayru_development database and reinitialize (this will change your coordinator keys).

Install your node

Follow along the instructions here to get your node up and running.

Create the keystore file

Connect to the database

sudo su postgres
psql nayru_development

Select the data

SELECT encrypted_private_key FROM key_pairs WHERE owner_type = 'Ethereum::Account';

It should look like this:

{"crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"771873094bd263c5431c4378d7cd015e"},"ciphertext":"fa1664b9574da817a0f1bec2492586874e4091cbdc023d90daac172f1b83e89d","kdf":"pbkdf2","kdfparams":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"3c31f12ce61b645a61eda11f76372a9c65380d9f346fc1033136143542a21a95"},"mac":"294a57a913c3eaea1ab1e8f599fc13f01bcb3966708cfaa06f0906ceea2df566"},"id":"ebecccc5-681b-4681-a12b-0fdeb2924c90","version":3,"address":"0xC7b1F27285325c9030d47B7Ce875A98ff76ae116"}

You can copy/paste this into a text file. This is what makes up a keystore file. You can now open it up with any application that uses keystore files with the password given to the PRIVATE_KEY_PASSWORD variable in the .env file.

Via Rails Console

If using separate instances and you cannot log into the console for PostgreSQL, you can still access the data via ActiveRecord and the Rails console.

docker run -it --env-file=.env smartcontract/chainlink rails runner "puts KeyPair.select(\"encrypted_private_key\").where(\"owner_type = 'Ethereum::Account'\").as_json"

You will need to remove the escaped quotes, but the data itself is the same as if you were to connect to the database directly.

Questions / Issues

I already initialized my database without a value set for PRIVATE_KEY_PASSWORD, what do I do?

Assuming you haven't actually sent LINK to the address that was created, you can simply drop the nayru_development database and run the initize command to recreate it with your password set.

Connect to PostgreSQL

sudo su postgres
psql

Drop the database

DROP DATABASE nayru_development;

Exit out of the psql and the postgres user

\q
exit

Make sure your environment variables are set in the .env file

edit .env

Reinitialize the database

docker run -it --env-file=.env smartcontract/chainlink rake oracle:initialize

What is the other address for in the key_pairs table?

That was used for testing in a previous release of the ChainLink software and will be deprecated in the future

Will I also need to send ETH to the address for gas to move LINK?

Yes, you will need some ETH to be used for gas. The amount can vary depending on how many assignments the node will accept.

Commands

Obtain the node's public address

docker run -it --env-file=.env smartcontract/chainlink rails runner "puts Ethereum::Account.default.key_pair.ethereum_address"

Obtain the node's associated private key

docker run -it --env-file=.env smartcontract/chainlink rails runner "puts Ethereum::Account.default.key_pair.private_key"