A KERI witness that anchors key events on Cardano blockchain.
- Cardano Address is derived from the same Ed25519 seed (private key) used to derive the prefix of the backer
- Anchoring KELs from multiple prefixes
- Queue events during a period of time to allow several block confirmations as a safety meassure
- Optional funding address to fund the backer address
- keri-roots
- original
keripyPR
pip install -e .
Check installation and available commands:
$ backer --help
usage: backer [-h] command ...
options:
-h, --help show this help message and exit
subcommands:
command
info Display registrar backer information
query Query KEL on ledger for a given prefix
start Runs KERI backer controller
./tests/start_backer.sh
Check variables and environmental variables that you can pass to configure the backer.
API KEY from Blockfrost. It's the only REQUIRED variable and it's needed to interact with the Cardano blockchain. Block Frost provide a free tier service with limits. Additionally, you can select Cardano mainnet or a testnet.
Be aware that the Backer Cardano address needs to be funded (transfer ADA or tADA to it). If you are using the testnet, you can fund it at Testnets faucet.
This is an OPTIONAL variable to provide the Private Key of funding address as CBOR Hex. Must be an Enterprice address (no Staking part) as PaymentSigningKeyShelley_ed25519. Note that storing private keys in an environmental variable is highly insecure !
This environmental variable is used by start_backer.sh script to specify the directory to place the configuration files.
This environmental variable is used by start_backer.sh script to specify the directory to create the database and keystore.
This environmental variable is used by start_backer.sh script to specify the URL of the backer needed to resolve OOBI and to receive queries from the agents.
This environmental variable is used by start_backer.sh script to specify the PORT of the backer needed to resolve OOBI and to receive queries from the agents.
This environmental variable is used by start_backer.sh script that passes it to the kli init as a SALT parameter. It's a qualified base64 salt for creating key pairs, that means that you can regenerate a backer with same AID and Cardano address.
See DOCKER.md for instructions on how to deploy using Docker.