Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A lightweight BFT consensus protocol for blockchains   We present a general consensus framework that allows to easily introduce a
customizable Byzantine fault tolerant consensus algorithm to an existing
(Delegated) Proof-of-Stake blockchain. We prove the safety of the protocol
under the assumption that less than 1/3 of the validators are Byzantine. The
framework further allows for consensus participants to choose subjective
decision thresholds in order to obtain safety even in the case of a larger
proportion of Byzantine validators. Moreover, the liveness of the protocol is
shown if less than 1/3 of the validators crash.
  Based on the framework, we introduce Lisk-BFT, a Byzantine fault tolerant
consensus algorithm for the Lisk ecosystem. Lisk-BFT integrates with the
existing block proposal mechanism, requires only two additional integers in
blocks and no additional messages. The protocol is simple and provides safety
in the case of static validators if less than 1/3 of the validators are
Byzantine. For the case of dynamically changing validators, we prove the safety
of the protocol assuming a bound on the number of Byzantine validators and the
number of honest validators that can change at one time. We further show the
liveness of the Lisk-BFT protocol for less than 1/3 crashing validators.

29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th