Casper

Implements Casper FFG (the Friendly Finality Gadget), a Proof-of-Stake finality protocol that can be layered on any block proposal mechanism.

Background

Implements a Casper FFG smart contract, written in Vyper.
See this Casper the Friendly Finality Gadget paper by Vitalik Buterin and Virgil Griffith introducing Casper FFG.
EIP-1011: specification of the Casper the Friendly Finality Gadget (FFG) PoW/PoS consensus model.

For macOS, with brew installed:

brew install　pandoc # required for a python dependency
brew install leveldb

For all systems:

pip3 install -r requirements.txt

NOTE: pip3 is a version of pip using python version 3. NOTE: we suggest using virtualenv to sandbox your setup.

Feel free to ask questions in our Gitter room or open an issue for feature requests or bug reports. Feel free to make a PR!

pytest tests

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casper	Add GAS opcode to list of banned opcodes and update test deployment	Jun 14, 2018
misc	sighash and sig_hasher removal	May 9, 2018
tests	update types to reflect Vyper updates	Jun 14, 2018
.gitignore	[custom-units] downgrade py-evm/eth-tester to eliminate performance i…	Jun 6, 2018
.travis.yml	fix installing requirements twice and remove sudo	May 10, 2018
IMPLEMENTATION.md	[deprecate-impl-guide] remove copy from impl guide and add deprecatio…	Apr 26, 2018
LICENSE	README: update for standard readme compliance, including adding a LIC…	May 31, 2018
README.md	Add requirements for brew install	Jun 5, 2018
VALIDATOR_GUIDE.md	Logged in check description mismatch	May 30, 2018
requirements.txt	[custom-units] upgrade web3.py to 4.3.1	Jun 6, 2018