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From YouTube: Build Your First Contract with the Wizard of OZ
Description
Visit the https://archive.devcon.org/ to gain access to the entire library of Devcon talks with the ease of filtering, playlists, personalized suggestions, decentralized access on Swarm, IPFS and more.
https://archive.devcon.org/archive/watch/6/build-your-first-contract-with-the-wizard-of-oz/
Whether you are a new developer writing your first contract, or an advanced one starting a new project, the OpenZepplin wizard is here to help you bootstrap your smart contract contracts. Let's see how to use it, from the basic contract idea to its deployment, in under 5 minutes!
Speaker(s): Hadrien Croubois
Track: Developer Infrastructure
Keywords: Smart contract,Solidity,Cairo
Follow us: https://twitter.com/efdevcon, https://twitter.com/ethereum
Learn more about devcon: https://www.devcon.org/
Learn more about ethereum: https://ethereum.org/
Devcon is the Ethereum conference for developers, researchers, thinkers, and makers.
Devcon 6 was held in Bogotá, Colombia on Oct 11 - 14, 2022.
Devcon is organized and presented by the Ethereum Foundation, with the support of our sponsors. To find out more, please visit https://ethereum.foundation/
A
A
Thank
you
for
coming:
I'm
Adrian,
I
work
at
open,
Zeppelin
and
today,
I'm,
going
to
show
you
how
you
can
very
quickly
build
your
first
contract
with
open,
ziplin
Wizards
very
quickly,
a
few
points
about
open
Zeppelin.
You
may
know
us,
but
our
testis
now
is
that
there
is
a
trillion
dollar
open
economy
being
built
on
Smart
contracts,
and
we
are
not
the
one
that
are
going
to
build
it.
You
guys
the
builders
are
going
to
do
that
through
your
dabs
through
device
through
everything.
A
We
do
that
through
many
offerings
or
it's
obviously
a
Defender
that
I
encourage
you
to
try
if
you
haven't
tried
it
already
for
for
managing
your
contract
and
and
also
the
open,
the
print
contract
Library,
obviously,
and
we
support
a
lot
of
network
so
last
year.
One
thing
we
did
on
the
contract
team
is
create
the
the
contract
Wizard
and
basically
so
it
should
be
animated,
but
it's
a
PDF.
So
sorry,
you'll
see
interaction
later
the
contract
with
are
basically
a
website
that
allows
you
to
bootstrap.
A
Basically,
a
lot
of
contract.
Trc20,
721s
Governors,
we'll
see
that
together
and
the
idea
is
to
remove
as
much
pain
as
possible
in
the
early
stage
of
building
your
contract
by
providing
what
is
common
to
everybody.
What
is
easy
so
that
you
can
then
focus
on
either
just
deploying
them
and
building
your
your
app
on
top
of
it
or
customizing
it
with
some
logic.
So
yeah
we
don't
have
much
time.
A
So,
let's
just
go
to
a
demi,
so
you
know
how
the
network
is
so
I'm
just
running
a
local
instance
here,
but
you
can
get
that
through
wizard.thensepin.com
and,
for
example,
today
I
propose
that
we
both
create
a
governor
Dao
that
we
could
all
be
participating
and
our
participation
in
this
Dio
will
be
represented
by
an
nft.
So
we'll
start
by
building
an
nft
contract.
So
we're
going
to
take
a
nearest
721
contract,
we're
going
to
make
it
mintable
and
you
see
the
code
change.
A
So
if
you
are
teaching
solidity
like
using,
that
is
also
a
great
tool
for
for
for
showcasing
how
like
adding
features,
modifies
your
contract,
so
I'm
putting
the
vote
module.
Obviously,
because
that
will
help
us
a
lot
I'm
using
roles
instead
of
own
ability.
But
you
see
that
the
wizard
updates
everything
very
nicely,
and-
and
that's
it
that's
a
very
simple-
maybe
make
it
burnable,
that's
a
very
simple
nft
contract.
A
So
once
you
have
that
you
can
just
copy
paste
download
it,
but
what
we're
going
to
do
is
open
it
in
remix
and
it's
also
a
local
instance
of
freemix,
because
Network
and
if
this
one
and
and
here
you
see
that
your
your
code
is
here-
it
just
got
put
into
into
this
part
here.
So
we
have
the
file
and
we
are
ready
to
work
on
it.
But
we
want
to
do
a
governor,
so
we
just
need
more
than
than
just
an
nft.
A
So
we're
going
to
go
back
to
Here
and
Now
go
to
the
governor
and
let's
make
a
governor
that
is
pretty
simple
with
a
current,
that's
at
least
10
nft
holders
we
need
to
participate.
Obviously
we
are
going
to
use
erc721
votes.
We
don't
want
a
time
lock,
but
we
want
to
make
it
upgradable
to
your
UPS,
so
yeah.
So
that's
a
governor
that
is
upgradable
and
since
it's
upgradable,
maybe
we
don't
want
to
have
the
setting
updatable
you
will
update
and
to
upgrade
you
do
what
you
want.
A
That's
that's
just
our
code,
so
it
turns
out
to
be
a
pretty
small
piece
of
code.
But
if,
if
I
had
put
that,
like
you
see
that
there
is
a
lot
of
overall,
specifically
some
overrides
that
are
sometimes
painful,
so
the
wizard
is
here
to
to
help
you
figure
that
out
and
so
know
that
I'm
happy
with
my
Governor
I'm,
going
to
just
open
that
in
mix.
A
Leave
this
one
remix
is
a
bit
strange,
but
now
I
should
have
both
files
here,
my
token
and
my
Governor,
so
let's,
let's
deploy
so
I'm
going
to
use
a
local
compiler
because
authorize
it's
not
going
to
work
without
network
and
I'm
going
to
compile
this
file.
This
is
possibly
the
longest
part
of
deploying
a
contract
is
actually
compiling
it's
in
the
remix
in
this
case.
Hopefully
it
doesn't
take
too
long,
because
I
only
have
three
minutes
left.
Okay,
it's
good.
A
One
thing
we
could
do
is
like
this
is
ownable,
but
here
we
could
just
modify
that
and
make
it
only
governance
so
that
your
your
great
ability
would
be
managed
not
by
the
owner
that
we
can
remove,
but
by
the
by
the
governor's
Governor
itself.
So
this
is
a
good
time
for
you
to
like
modify
your
contract,
a
bits
I
hope
you
hopefully
I,
haven't
made
any
type
on.
It
will
compile
again,
always
the
longest
part.
Yes,
it's
good
I
also
need
to
compile
this,
which
is
my
token
so
here.
A
And
now
that
this
is
compiled,
yes,
I
can
just
go
here.
Take
my
token,
so
my
token
is
here:
it's
on
your
system.
21
I
can
just
deploy
it
again
to
a
local
instance,
we're
not
going
to
wait
for
for
girly.
Oh
I
removed
it
yeah.
This
is
okay.
This
is
my
token
here.
I've
got
a
lot
of
features,
so
I
can
just
take
my
address
here
and
paste
it
into
safe
mint
to
Mint
myself,
one
to
three
tokens.
Yeah
I've
got
three
tokens.
A
If
you
could
look
at
my
balance,
I've
got
three
tokens.
I
need
to
delegate
this
to
myself,
so
I'm,
just
calling
the
delegate
function
and
right
now,
if
I
go
to
get
votes
here,
you'll
see
that
my
wallet
has
also
three
votes.
So
that's
good
know
that
we
have
this.
We
are
going
to
deploy
the
second
part,
which
is
our
governor.
A
Where
is
the
governor?
It's
not
here.
Do
I
need
to
yeah
okay.
My
Governor
is
here.
We
remember
that
the
governor
was
an
upgradable
contract.
So
basically,
what
is
going
to
happen
is
that
freemix
is
going
to
understand
that
and
is
going
to
deploy.
First
implementation
and
then
the
proxy,
which
it's
great
from
remix,
to
support
that.
So
now
you
see
that
I
have
to
contracts
the
governor
and
this
and
if
I
go
there
and
I
just
again
copy
paste.
The
address
of
my
my
account
and
I
see
is
the
get
passed
vote.
A
Oh,
it's
in
the
view
function,
I've
got
the
get
votes
that
allows
me
to
check
what
were
my
votes
at
block
number
six
and
I
broke
number
six
I
had
three
votes
that
was
after
I
I
delegated
that
book
number
three
I
had
zero
votes.
That
was
before
my
delegation.
So
we're
not
going
to
do
a
proposal
or
anything
we
are
out
of
time,
but
you
could
take
this
put
it
into
Defender
to
propose
easily
from
open
the
plane
Defender.
A
You
could
also
link
that
to
tally
so
that
your
user
and
your
nft
holders
can
vote
easily
and
so
basically,
in
seven
minutes
we
managed
to
to
deploy
an
entire
governance
system,
Benson
nft
and
that
wouldn't
have
been
possible
without
the
wizard.
So
yeah,
that's
what
we
are
very
proud
of,
that
we
want
you
to
use
and
yeah
and
I
should
have
put
the
advice.
The
address
is
wizard.openzaplin.com.