Taiko Mainnet Set for BCR Protocol Upgrade to Version 1.7.0

Taiko
has
announced
an
upcoming
upgrade
of
its
BCR
mainnet
protocol
to
version
1.7.0,
scheduled
for
July
1st.
According
to

taiko.mirror.xyz,
this
release
maintains
ABI
compatibility
with
the
current
Taiko-geth
and
client
releases
but
introduces
underlying
protocol
changes
that
will
impact
block
proposers
and
provers.

Hekla
Protocol
Already
Upgraded

The
Hekla
protocol
has
already
been
upgraded,
which
may
lead
to
failures
in
some
block
proposals
and
proving
transactions.
Block
proposers
and
provers
are
encouraged
to
update
their
transaction
parameters
promptly
to
avoid
disruptions.

Breaking
Changes
for
Proposers
and
Provers

The
new
protocol
mandates
that
the
block’s
assigned
prover
must
also
be
the
proposer.
As
a
result,
certain
block
proposal
parameters
will
be
deprecated
and
ignored.
This
change
aims
to
optimize
gas
usage
by
eliminating
hook
calls,
which
are
considered
expensive.

Block
proposers
must
now
also
prove
their
own
blocks,
or
risk
forfeiting
their
liveness
bond.
Those
working
with
a
prover
partner
or
using
two
EOAs
for
proposing
and
proving
blocks
will
need
to
deploy
a
contract
to
call

proposeBlock
and

proveBlock
functions
in
the
TaikoL1
contract.
Detailed
information
can
be
found
in
the

ProverSet
contract
code.

Additionally,
block
provers
must
verify
whether
the

stateRoot
of
an
existing
transition
is
zero.
If
it
is,
the
protocol
will
only
compare
the

blockHash
to
determine
if
another
transition
is
a
contestation.
Currently,
all
existing
transitions
have
non-zero

stateRoot
values,
and
the
protocol
compares
both
the

stateRoot
and
the

blockHash
to
ascertain
if
two
transitions
are
identical.

Other
Changes

The
upgrade
will
also
reduce
the
liveness
bond
and
SGX
proofs’
validity
and
contestation
bond
by
50%,
allowing
more
participants
in
Taiko’s
permissionless
transaction
sequencing
with
lower
capital
costs.
Additionally,
several
minor
changes
to
data
persistence
on
Ethereum
will
reduce
gas
costs,
expected
to
decrease
the
gas
footprint
on
L1
post-upgrade.
These
changes
will
be
reflected
in
the

Dune
Dashboard.

For
a
complete
list
of
changes,
refer
to
the

1.7.0
release
note.

Request
for
Feedback

Taiko
invites
feedback
from
proposers,
provers,
Ethereum
researchers,
and
all
users
to
help
improve
the
protocol.
Feedback
is
especially
valuable
before
the
establishment
of
a
DAO.

Contribute
to
Taiko

Contributors
can
participate
in
Taiko’s
development
on
GitHub
and
earn
a
GitPOAP,
with
recognition
as
a
contributor
on
the
README.
Interested
individuals
can
get
started
with
the

contributing
manual.

Image
source:
Shutterstock