Bäckerei is tooling that we wrote for the Cryptium Tezos Bäckerei. At a high level it manages the payments from us, the baker, to our delegators. Bäckerei is initialised with a TZ1 address which is used for baking. When run, it connects to a full-node and scans the entire transaction history to determine who the delegators are and how much they should get paid. Note that this full-node must be trusted.
You can check out all the configuration options in
You can set your fee, the RPC URL of your full node, etc.
When run, Bäckerei reads and updates a simple JSON database file. You can see ours here. All your delegators can use that file to check whether they have been paid correctly, and on top of it you can build front-ends on it like this one.
Bäckerei also allows you to specify a different payout address. This means that you can pay from a KT1 account on a separate server instead of having to pay directly from your Nano Ledger S.
Note that Bäckerei calculates idealized payouts, not realized payouts. On-chain and off-chain delegators will be paid according to what your baker would have made if you had successfully baked and endorsed all scheduled blocks and endorsement slots (plus realized fees). This is roughly equivalent to insuring liveness.
Initialize Bäckerei with the tz1 address of your baker, for example that of Cryptium Labs, the address you want to send payouts from, the alias associated with that address, the path to your database file, and the first cycle in which you baked or endorsed blocks:
backerei init \ --tz1 tz1eEnQhbwf6trb8Q8mPb2RaPkNk2rN7BKi8 \ --from tz1eEnQhbwf6trb8Q8mPb2RaPkNk2rN7BKi8 \ --from-name payout \ --client-config-file $HOME/.tezos-client/config \ --starting-cycle 11
More options can be passed if desired. Run
backerei init --help for a full
list. You can also edit the config file directly.
Bäckerei is stateful and will calculate outstanding payouts automatically. Simply run:
By default, that command will execute a dry run and only display what payouts need to be sent.
In order to actually send transactions, run:
backerei payout --no-dry-run
In order to run continuously (so that payouts will be sent as soon as new cycle starts):
backerei payout --no-dry-run --continuous
Bäckerei is fairly well tested, but be careful! Ensure you trust the Tezos node to which you are connecting. In any case, you would be well-advised to pay from an isolated account with the minimal requisite balance.
--fee parameter to
backerei init requires the format "n % d" where
d is denominator.
# set up a 9.5% fee backerei init --fee "19 % 200" <...> # set up a 5% fee backerei init --fee "5 % 100" <...>
Different networks such as alphanet may have different constants. You need to specify these constants during initialisation for Backerei to work correctly.
The default values for these constants work on the Tezos mainnet.
--cycle-lengthdefaults to 4096. For alphanet, set to 2048
--snapshot-intervaldefaults to 512. For alphanet, set to 256
--preserved-cycles: defaults to 5. For alphanet, set to 3
Estimated rewards vs final rewards
The payout calculator assumes 100% liveness of your own baking and endorsing node, and pays accordingly. However, the effective rewards for a given baker also depends on the behaviour of other bakers in the network. For example, if bakers fail to endorse your block, or fail to include your endorsment in their block, then your rewards are lower.
Estimated rewards assume perfect behaviour of the entire set of active delegates for a given block. Final rewards take into account the actual faulty behaviour of other nodes (not yours) and are accordingly a few percent lower.
By default, the payouts are paid after
PRESERVED_CYCLES, which corresponds to when
the Tezos network unfreezes them. You may choose to pay them earlier or later:
--payout-delay 2will pay the rewards two cycles (six days) later
--payout-delay -1will pay the rewards one cycle (three days) before you actually get access to them
You cannot set a payout delay of less than negative
PRESERVED_CYCLES because final
rewards can not be computed before the cycle ends. However, you may set up a payout delay
of up to
2*PRESERVED_CYCLES + 1 if you use the
This option will likely pay more than the final fee, so adjust your fee accordingly.
You can find historical payout logs for Cryptium Labs here and cross-check against a payout database generated locally.
Stack required for the build process. Once Bäckerei is installed, you can uninstall Stack.
Not required unless you want to modify the code and contribute upstream.
First, install Hlint:
stack install hlint
To run an interactive REPL with Bäckerei scoped:
To remove all build files:
~/.local/bin will need to be on your
GPLv3. See LICENSE for full terms.