53 releases (35 breaking)
0.44.0 | Sep 26, 2024 |
---|---|
0.43.0 | Jul 18, 2024 |
0.41.0 | Jul 12, 2024 |
0.36.0 | Mar 18, 2024 |
0.8.0-alpha.5 | Mar 24, 2020 |
#2 in #difficulty
54 downloads per month
Used in polkadot-sdk
1MB
19K
SLoC
Proof of work consensus for Substrate.
To use this engine, you can need to have a struct that implements
PowAlgorithm
. After that, pass an instance of the struct, along
with other necessary client references to import_queue
to setup
the queue.
This library also comes with an async mining worker, which can be
started via the start_mining_worker
function. It returns a worker
handle together with a future. The future must be pulled. Through
the worker handle, you can pull the metadata needed to start the
mining process via MiningWorker::metadata
, and then do the actual
mining on a standalone thread. Finally, when a seal is found, call
MiningWorker::submit
to build the block.
The auxiliary storage for PoW engine only stores the total difficulty.
For other storage requirements for particular PoW algorithm (such as
the actual difficulty for each particular blocks), you can take a client
reference in your PowAlgorithm
implementation, and use a separate prefix
for the auxiliary storage. It is also possible to just use the runtime
as the storage, but it is not recommended as it won't work well with light
clients.
License: GPL-3.0-or-later WITH Classpath-exception-2.0
Release
Polkadot SDK stable2409
Dependencies
~93MB
~2M SLoC