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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/zk-badges-a-new-primitive-for-self-sovereign-identities/
How to prove that you donated to Gitcoin grants or that you voted for a specific DAO proposal without giving out your Ethereum address?
How to aggregate your reputation from multiple wallets?
Built as a new primitive, ZK Badges enable you to:
- Import reputation from an account to another
- Selectively reveal personal data
- Aggregate your personal data from multiple accounts
Speaker(s): dhadrien
Skill level: Intermediate
Track: ZKPs: Privacy, Identity, Infrastructure, & More
Keywords: ZK,SBT,DID
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
Hi,
my
name
is
Adrian
I'm,
the
founder
of
sismo
and
I'm
excited
to
speak
today
about
GK
buddies
that
are
new,
primitive
for
you
to
leverage
fully
your
own
chain
data.
You
also
bring
data,
so
this
talk
will
cover
the
notion
of
sovereign
occurrence,
self-solving
identities,
but
but
before
getting
into
that,
I'd
just
like
to
spend
a
few
words
about
sismo.
A
We
think
that
there's
too
much
power
in
the
hands
of
big
companies
holding
our
personal
data
and
in
governments
that
can
access
it
at
will,
and
so
what
we
want
to
do
is
really
to
add
a
privacy
and
the
centralization
layer
in
identity
systems,
so
that
will
remain
Sovereign.
We
want
to
protect
human
sobriety,
meaning
that
we
want
to
be
sure
that
individuals
remain
in
control
of
their
societies
and
that
we
keep
unchecked
the
central
entities
that
are
public
or
private
institutions.
A
What
we
do
is
build
Primitives
to
empower
our
self-solving
identities,
so
the
first
primitive
that
we
built
are
ZK
badges.
They
allow
you
to
leverage
your
serving
data
we'll
see
that
later,
but
there
are
soluble
tokens.
There
are
non-trustworld
tokens
that
are
attestation,
meaning
that
when
you
have
SDK
badge
it
means
something
about
your
identity.
Your
data,
your
reputation,
your
history,
they
allow
to
you
to
do
three
things.
First,
they
allow
you
to
import
reputation
from
an
account
to
another.
Let's
say:
I
have
let's
say
that
I
have
a
point.
A
Content
address
and
I
want
to
prove
that
on
another
address,
have
an
attestation
I
I,
get
to
ZK
batch
on
the
new
address
and
I
have
the
proof
that
I
have
a
book.
It
also
allows
me
to
selectively
reveal
what
I
want
from
my
account.
So
granularly
reveals
some
personality.
Let's
say
that
I
have
an
account
with
a
lot
of
data
I'm
able
to
pick
one
piece
of
data.
A
Let's
say
the
crypto
pen,
ownership
and
I'll
be
able
to
reveal
that
to
someone
I
own
that
without
giving
my
address
or
anything
else,
the
the
last
thing
is.
It
allows
you
to
aggregate
your
data.
Let's
say
that
you
have
a
punk
on
an
address
and
a
bank
on
another
one
and
you'd
like
to
prove
that
you
have
two
punks
without
creating
a
link
between
your
accounts.
That's
what
DK
badges
allow
you
to
do
so
it
allows
you
to
do
to
control
your
identities
and
without
creating
links
between
them.
A
So
now,
I
think
that
before
getting
into
the
the
technical
parts
of
the
SDK
badges
I'll
I'd
like
to
spend
some
time
on
self-serving
identities
and
because
that's
what
budgets
for
we
built
that
it's
it's
our
goal
is
really
to
with
DK
Badges
and
generally
with
cismo
is
to
make
our
Sovereign
identities
more
powerful,
better
than
web
2
identities,
so
better
than
your
Google
account.
So
a
web
2
identities
a
web
to
energy
in
the
web
to
world
the
ITT
is
stored
in
an
account.
Let's
say
your
Twitter
account.
A
You
choose
your
username
your
password
and
they
give
you
an
account.
Actually,
they
don't
really
give
you
the
accounts,
it's
still
theirs,
but
you
can
access
it
if
they
are
willing
to,
and
you
start
doing
things
on
Twitter
you
interact
with
others,
and
you
are
starting
to
build
your
identity.
So
here
you
have
an
identity
in
a
webto
account.
That
is
not
yours.
It's
your
identity!
You
have
the
same
with
Facebook,
with
with
Instagram
with
LinkedIn.
You
have
your
identities
that
are
on
rented
accounts.
A
An
interesting
thing
about
this
identities
is
that
you
still
have
some
control
over
them.
You
can
use
them
to
connect
to
other
services.
That's
the
singer.
Sign-On,
for
instance,
I
can
connect
to
typefully
with
my
Twitter
account,
and
it
allows
me
to
I
can
bring
some
part
of
my
identity
that
is
on
on
Twitter
to
type
free.
So
there
is
some
sort
of
portability,
but
of
course
it's
super
easy
restricted
at
any
point.
If
Twitter
thinks
that
I
produce
is
competing
with
Twitter,
they
will
remove
the
access
of
these
accounts.
A
So
we
see
that
yeah
web
2
identities
are
not
yours.
It's
super
restricted.
What
you
can
do
as
your
identities.
Of
course,
there's
no
possibility
to
link
your
identities
together,
meaning
that
it's
impossible
to
create
an
event
where
you
in
you
invite
your
Facebook
friends,
your
Twitter
friends,
your
LinkedIn
friends,
because
they
are
actually
competing
on
your
accounts
like
it's,
not
your
accounts,
it's
theirs,
it's
their
asset,
that's
how
they
make
money.
They
want
you
to
put
as
much
data
on
it
as
possible,
and
so
that's
not
your
Idols.
A
You
cannot
fully
leverage
it
and
on
the
other
side,
we
have
the
Self
Storage
accounts
data,
for
instance,
ethern
wallet,
it's
owned
by
a
private
key,
meaning
that
the
private
key
is
the
thing
that
you
must
have
the
priority
to
do
anything
with
these
accounts.
What's
amazing,
too,
is
that
is
permissionless?
Anyone
can
create
a
self
surrender
accounts
without
asking
permission
to
anyone.
So,
okay,
that's
great
what
I
can
do
with
it?
A
A
A
They
are
bigger
than
that,
because,
okay,
you
can
use
the
private
key
to
send
transaction
to
to
use
different
applications,
but
you
can
you
also
use
them
to
log
in
on
into
your
app
I,
think
you
know
using
snapshot
or
other
applications
that
now
you
have
login
system
stems
based
on
wallets,
that's
called
sign
in
with
ethereum,
and
you
can
log
into
an
app
traditional
app,
but
instead
of
an
email
and
password
you
log
in
with
your
wallet,
so
they
also
awareness.
Also
an
identities.
A
Accounts
are
better
than
than
traditional
accounts,
even
at
work
to
stuff.
So,
okay,
I
can
connect
to
snapshot
with
my
ethereum
wallet.
I,
send
a
message:
they
say:
okay,
you're
logged
in
and
what's
great,
is
that
you
bring
your
whole
identity
to
the
app.
So
what
does
Snapshot
is
okay,
you're
logged
in
as
data
entities?
Oh
you
have
some
other
or
you
have
some
uni
swap
tokens.
You
can
vote
on
my
governance
with
it.
So
that's
where
you
cannot
you.
You
start
to
see
the
sovereignty
that
we
have
over
our
identities
with
wallets.
A
That
I
can
bring
my
identity
to
the
app,
but
that's
something
that
is
less
cool
because
it's
the
beginning.
We
immature
is
the
fact
that
when
I
do
this
I
actually
share
everything
all
my
identity.
Let's
say
that
I
have
An
Occurrence
my
menu
account.
That
is
private.
With
a
lot
of
data.
My
erc20s
my
assets,
my
nfts
so
many
things
and
that
I
want
to
access
an
app
to
let's
say
that
are
created
by
crypto
pen
Corners,
because
I
just
want
to
be
part
of
a
cool
community
and
access.
A
The
chat
app
using
sign
in
with
ethereum
I
would
have
to
connect
with
my
main
wallet
and
give
so
much
data
about
myself
here.
What
we
saw
is
that,
at
every
time
that
I
connect
to
an
app
with
learning
with
them,
I
bring
all
my
data.
But
again
the
sales
training
accounts
are
amazing,
they're
controlled
by
a
private
key,
and
you
can
do
even
more.
A
You
can
do
zero
knowledge
proofs,
and,
with
this
account
you
can
basically
select
a
piece
of
data
that
you
want
to
share
and,
and
that's
it
so
again,
it's
super
powerful
and
that's
everything.
That's
that's
what
badges
are
about.
It
allows
you
to
selectively
reveal
some
part
of
your
Sovereign
data.
So
again
what
they
are.
They
are
tokenized
at
attestation,
meaning
that
when
a
wallet
has
this
SBT,
this
non-trustable
token,
it
means
that
it
means
something
about
the
identity.
It's
an
attitation
like
they
have
a
crypto
plane,
the
Virgin
Island
governance.
A
They
have
a
certain
number
of
Twitter
followers
stuff,
like
that.
It's
DK,
because
it's
it's
minted
by
a
ZK
attester.
This
is
a
smart
contract
that
accepts
zero
knowledge,
proofs
and
okay.
You
brought
me
the
knowledge
proof
that
you
have
a
crypto
bank.
Now
I
give
you
the
badge
that
you
have
a
crypto
pack
and
it's
on
evm
chance.
A
It's
deployed
currently
on
polygon,
but
we
plan
to
go
everywhere,
especially
on
on
layer
2,
of
course,
now
a
small
thing
about
badges
that
small
Nuance,
that's
not
very
important,
but
still
these
are
ERC
1155.
Each
batch
has
a
token
ID
in
this
contract,
and
that
means
that
each
bus,
each
badge
is
a
sort
of
erc20.
It's
not
really
a
NFC,
so
erc20
and
for
the
same
batch
you
can
have
different
balances.
So
we'll
see
that
later.
A
A
A
The
accessor
validates
that
okay,
the
legend
that
it
has
a
punk
I
value,
that
I
mean
the
badge,
but
the
SDK
tester
at
no
point
will
know
about
my
address
last
thing
he
does
is
that
it
stores
only
fires,
we'll
see
that
later
so
to
to
really
understand
better
GK
badges
I
like
to
use
two
identities.
Let's
say
that
I
have
my
public
wallet
again,
they
do
not
use
I.
A
Have
my
ens
names
I
donated
a
Bitcoin
I'm,
a
verified
human
meaning
that
I
docs
myself
I
uploaded
the
video
with
my
name,
Master
name,
and
it's
linked
to
my
address.
So
this
address
is
completely
docked.
Like
everybody
can
know
everything
about
it.
I
have
some
nfts
I
only
need
two
conferences.
So
I
have
some,
perhaps
and
actually
I
have
another
wallet.
This
is
this
mine
is
my
private
wallet.
That's
where
I
do
my
DJ
and
stuff
I
have
a
lot
of
transaction
I,
maybe
have
a
lot
of
assets.
Hopefully
that's
the
dream.
A
A
A
So
what
I'll
do
is
that
I
will
have
the
proof
of
humanity,
the
key
batch
online
wallet
and
it
will
just
reveal
what
I
need
that
is
I'm
a
human
I
have
somewhere
a
Social
account
that
is
doxed
and
I
was
able
to
do
this
badge
only
once.
Okay,
so
now
we'll
get
into
the
technicalities.
How
everything
is
done.
The
zkr
tester
I
told
you
about
the
one
we
currently
use
is
the
Hydra
s1z
cat
tester
Hydra
S1
is
for
the
proving
scheme,
because
we,
this
statistor,
accept
a
certain
type
of
GK
proofs
and
I'll.
A
Explain
what
those
UK
proofs
are
so
behind
the
hydration
tester
there's
always
a
group
of
eligible
accounts,
that's
how
it
works.
So,
for
instance,
behind
the
ZK.
The
proof
of
humanity
is
the
cable.
There
is
the
list
of
all
the
registrants
that
are
on
the
poh
registry.
So,
of
course
there
is
my
address.
We
see
this
that
there
is
a
value
to
each
address
to
each
account,
and
this
value
will
be
the
balance
of
the
batch,
and
with
this
you
can
you
you
can
use
it
to
to
code
some
sort
of
tiers.
A
So
let's
say
imagine
that
in
V2
poh
have
a
super
verified
user
like
it's
verified,
but
very
well
with
kyc
or
I,
don't
know
what
you
could
have.
Maybe
the
element
is
with
the
value
2
and
it
will
give
the
badge
with
the
balance
too,
and
everyone
that
has
two
badges
like
that.
Has
balance
two
of
these
batch
means
they
are
super
verified.
So
again,
yes,
here
is
just
you
have
pH
UI
in
the
group
with
one
you
are
not
you're,
not
in
the
group,
so
you
have
the
group
of
eligible
accounts.
A
These
are
the
accounts
that
will
be
able
to
meet
the
badge
and
we
put
them
in
a
Merkel
tree.
It's
a
position,
Local
3,
so
that
it's
not
friendly,
which
is
that,
but
in
the
leaves
you
have
all
the
eligible
accounts.
We
have
the
root,
we
publish
the
root
and
chain
and
we'll
see
what
we
do
use
everything.
So,
the
the
the
the
way
the
the
badges
minted
is.
First,
you
go
to
your
front
end.
A
So
I
wantismo
I'm,
connected
with
the
adrenal,
is
the
four
seconds
I
first
I
upload
the
Merkel
tree
now
I
have
in
iPhone
10
everything
happens
on
the
front
end.
That's
what
guarantees
the
Privacy
so
on
in
my
front
end
I
have
the
marker,
3
I
have
my
account
and
what
I
will
do?
I
will
do
three
things.
First,
I
will
prove
that
I'm,
the
owner
of
daily,
not
eat,
and
these
three
things
will
be
done
in
the
SDK
circuit.
So
first
thing
I'm
the
owner
of
the
adrian.t.
A
Second,
the
original.e
is
in
the
Mercury
Beyond
local
proof,
and
the
third
thing
is
I
actually
own.
The
destination
account.
Let's
make
sure
that
I
cannot
give
budgets
to
others
or
that
I
cannot
spam
another
account.
So
these
three
things:
I
I'm,
daniel.is
Source,
account
destination,
accounts,
I'm
part
of
the
tree.
I
do
that
in
the
ZK
snack
I
get
a
ZK
proof.
The
ZK
proof
reveals
nothing,
but
there
is
an
address
that,
like
this
users
has
proved
to
have
an
address
that
is
part
of
the
tree.
A
I
give
that
to
the
zika
tester
and
the
decalter
does
two
things.
First,
it
verifies
the
proof:
okay,
it's
valid,
ZK
magic
and
then
it
register
a
nullifier
I
think
that
there
was
some
presentation
defconable
this,
but
it's
a
way
to
make
sure
that
from
One
Source
I
can
do
only
one
batch
and
for
this
I
register
on
unifier,
it's
the
anonymized
version
of
my
address.
Basically,
that's
great
and
now
I
have
my
badge
on
my
destination
account
and
there's
no
leak.
Nobody
can
know
from
this
destination
account
what
account
was
used
to
generate
it.
A
So
again
we
saw
that
this
DK
tester
allows
you
to
prove
from
a
group
to
create
from
a
group
SDK
badge,
and
actually
this
is
a
complete
accessor.
Anyone
here
in
the
in
the
room
can
create
its
own
Decay
batch.
That's
what
we
build
system
we're
going
to
build
this
mode
to
do
some,
Partnerships
or
stuff,
like
that,
it's
a
primitive
everything
is
open
source
of
course,
and
very
easily
in
15
minutes.
If
you
are
developers,
we
have
a
tutorial
that
helps
you
with
that.
A
You
can
fetch
from
your
subgraph
from
bigquery
from
anything
you
can
fetch.
Your
group
choose
the
metadata
for
your
badge,
choose
the
visual
and
that's
done
so
again.
Anybody
can
create
this.
Dk
badge
can
create
the
group
SDK
version
and
we
just
released
today
the
factory
of
sismo.
It
allows
for
even
people
that
are
neither
coder
or
designer
to
build
a
GK
badge.
It
works
that
way.
You
you
add
metadata.
We
have
a
SVGA
Editor
to
create
your
CK
badge
and
then
you
have
just
to
copy
past
the
list
of
address.
A
You
push
the
button
and
done
you
have
your
ZK
badge
available.
So
that's
I
think
that's
super
great,
so
I
invite
you
to
try
that
and
before
that
I'd
like
to
before
getting
yeah
now
I
want
to
speak
about
the
protocol.
So
we
saw
that
this
one
is
open.
Anybody
can
add
its
group,
it
will
have
your
their
own
ZK
badge
for
their
user
Community,
but
even
better.
Actually,
so
that's
what
I
told
you
about
anybody
can
add.
A
A
So,
for
instance,
you
can
use
simr4
it's
another
SDK
scheme
that
will
be
SDK
tester,
but
you
can
also
use
a
public
accessor,
like
the
proof
that
you
would
require
from
user
is
not
a
ZK
proof,
but
a
worker
proof
and
the
signature
easy
recover
or
you
could
even
create
a
centralized
adjuster,
meaning
that
the
proof
that
you
have
to
send
to
get
your
badge
is
a
signature
of
the
third
party.
So
again,
that's
that's.
What
we're
trying
to
do
is
really
primitive
we're
not
here
to
yeah.
A
We
want
you
to
have
fun
with
this,
so
that
you
can
really
control
the
data
of
your
users
and
and
that
you
can
build
weird
stuff
like
if
I
did
in
2020.
It
did
real
stuff
with
composability
between
all
the
financial
applications.
Here.
What
we
want
to
do
is
we'll
stuff
about
the
social
capital
that
you
have.
So
that's
it
again.
All
these
open
source
invite
you
to
read
the
docs
and
I'll,
get
that
so
now
we
get
back
a
bit
to
recap
a
bit.
So
what
it
allows
you
to
do.
A
I
told
you
that
it
allows
you
to
import
reputation
from
the
public
to
an
unknown
wallet,
but
you
can
do
the
reverse
again.
If
I
was
a
degener
in
my
and
on
wallet,
I
could
import
this
reputation
to
my
public
wallet
have
ethernet
power
users,
only
top
0.1
percent
ethernet
users
can
means,
and
so
that
way
approved
as
they
generated
that
I'm
a
Degen
but
I
never
revealed
my
wallet.
So
that's
yeah!
A
When
do
you
think
the
other
thing,
if
you
think
about
it,
what
happens
if
I
mint
the
badge
on
a
one-time
address,
fresh
new
address,
What
I've
Done?
By
doing
this,
is
that
I'm
able
to
reveal
just
exactly
what
I
need?
It's
not
about?
Building
an
identity
is
to
I
need
to
prove
to
someone
that
I
meet
some
quitter
yeah
I
create
a
new
address.
I'm
in
the
batch
there
and
I
will
also
prove
exactly
what
I
need.
So
here
on
the
adrian.e
again.
I
have
a
lot
of
data.
A
That
is
that's.
That's
leveraging
your
data,
that's
what
we
call
it.
So
it's
super
excited
about
this.
The
last
thing
that
we
intend
to
do
that
is
not
life
is
the
way
to
aggregate
your
reputation
in
cismo.
Our
governance
is
not
token
based.
Oh,
it
is
token
basement,
but
not
Financial
token
based
it's
been
is
based
on
contributions,
meaning
that
the
more
contributions
you
did
for
sismo
the
higher
voting
power.
You
have
again
it
reuses
the
thing
that
I
told
you
about
the
balance
of
the
token.
A
Basically,
the
more
contributions
you
did
you,
the
higher
you
will
be
in
the
tier
of
contributor
and
the
higher
voting
power.
So
here
with
ZK
badges,
you
will
be
able
to
aggregate
your
reputation
from
your
private
wallet
that
maybe
you
held
by
using
a
lot
sismo
and
from
your
public
wallet
that
maybe
you
help
by
doing
some
threads
some
communication
about
this
more
so
yeah,
again,
I
think
for
governance
power.
This
is
very,
very
interesting.
A
To
have
reputation
based
governance
instead
of
just
like
who
has
been
like
instead
of
erc20
is
only
that
is
financial
capital
or
communities
that
are
ruled
by
your
nft
that
you
just
have
to
first
come
first
serve
and
it's
like
a
airdrop
Farmers,
this
kind
of
stuff
here
these
tokens
means
a
lot
and
it's
private.
So
you
can
really
speak
your
mind.
There's
no
risk
at
knowing
that
you're,
a
team
member
or
I
don't
know
so
we
are
super
excited
about
this
new
primitive.
A
So
now,
I
I'd
like
to
speak
about
the
long-term
vision
of
system.
Again
I'm
able
to
aggregate
with
you
I
am
able
to
aggregate
data.
The
way
it
works
is
that
basically
anytime
I
want
to
use
an
account
to
prove
something
about
it.
I
will
send
a
message
with
it
and
it
gives
the
second
the
ability
to
be
in
the
ZK
world,
like
from
now
on
I,
can
prove
everything
about
my
data.
So
the
way
it
works
that
I
will
import
into
the
system.
A
Volt
that
you
encrypted
data
volt
that
is
only
accessible
to
yours.
I
will
store
the
signatures
that
I
told
you
about
so
I
sign
with
daniel.tis
now
I'm
in
the
world,
with
the
unknown
I'm
in
the
world,
and
now,
as
a
user
I'm,
the
only
one
that
has
access
to
all
my
data,
and
now
it
doesn't
matter
whether
it
comes
from
an
address
to
address
or
I,
don't
know
what
I'm,
the
user
I
have.
Yeah,
access
to
everything
and
I
can
use
it
as
I
want.
A
So,
for
instance,
let's
say
that
I
want
to
access
an
airdrop
and
they
require
me
to
prove
that
I'm,
a
human
that
it's
a
CP
resistant
harder.
That
would
be
great
to
have
that,
so
they
require
me
to
prove
and
that
I'm
a
human
and
that
I
don't
know
that
I
traded
a
lot
on
their
platforms
or
that
I
am
a
big
user.
So
that's
what
allows
me
the
world
to
do.
I
can
generate
the
ZK
proof.
A
Let's
say
on
the
one
time
address
on
the
go
and
I
can
give
I
can
connect
with
standing
resistance
to
this
service
and
review
just
what
I
want
the
the
other
thing
that
is
interesting
is
that
you
can,
in
the
long
run
we
are
using
Badges
and
sbts,
because
we
think
that
they
are
tremendously
great
at
standardizing
things,
because
everybody
knows
how
to
fetch
a
token,
how
to
read
your
token
and
that's.
Why
I
think
that
they
have
an
advantage
over
PCS.
A
A
It's
a
big
question:
why
we're
using
tokens
because
they
are
great
at
standardizing
once
you
have
reputation
as
a
token,
it's
super
easy
for
anyone
to
fetch
it
to
know
that
we
have
the
sign
in
with
the
term
tools
and
all
these
things,
but
on
the
long-term
vision,
do
we
really
need
to
send
those
UK
proof
to
a
Smart
contract
to
me
in
the
badge?
If
what
we
want
to
prove
is
to
a
third
party,
let's
say
that
I
want
to
prove
to
a
merch
store
that
I
have
crypto
Bank.
A
Do
I
really
need
to
send
a
badge
on
an
address?
Maybe
not
I
can
directly
send
the
ZK
badge
to
this
third
party.
So
that's
the
the
big
big
vision
of
system
is
ready
to
be
to
be
a
Google
connect
on
top
of
your
server
and
identities.
You
add
your
all.
Your
accounts,
your
Twitter,
account
your
GitHub
account.
You
also
learn
the
address
your
Bitcoin,
whether
it's
your
ethereum
wallet,
you
upgrade
all
of
that
and
then,
when
you
want
to
send
to
an
app
they
say.
A
Okay
I
want
a
bit
like
when
you
connect
to
with
Google
connect.
They
say:
okay,
they
will
access
your
email,
your
contacts,
your
all
these
things.
What
we
don't
hear
is
that
okay,
I
I
connect
with
this
more.
This
app
want
to
see
your
amount
of
I,
don't
know,
nfts
your
total
net
worth
all
these
things
and
you
choose.
A
You
choose
what
you
want
and
if
you
choose
your
food
to
bring
your
full
reputation,
maybe
maybe
you'll
have
access
to
the
best
services,
but
you
can
also
choose
to
just
reveal
what
you
want,
because
if
you
don't
want
to
give
to
this
application
everything
so
yeah,
that's
that's
really
about
system
is
trying
to.
We
have
more
and
more
engine
data.
We
have
more
and
more
great
projects
that
are
bringing
of
chain
data
to
Unchained
data,
but
today
we
cannot
really
leverage
it.
A
We,
the
Privacy,
is
a
real
issue
about
identity
because
we
are
used
to
web
to
Identity
that
are
private
because
they
are
closed.
It's
closed
Gates.
They
don't
want
to
see
anything
so,
of
course
it's
private
by
Design,
but
on
web3
with
public
by
Design,
but
this
also
caused
some
issues,
so
I
hope
that
that
I
share
my
excitement
about
what
we
can
do
with
serving
identities
and
we're
hiring
by
the
way.
So
if
the
mission
is
exciting
to
you,
we
are
very
small
team.
A
We
are
just
seven,
but
we
are
very
passionate
about
what
we
do
so
feel
free
to
reach
out
and
again
everything
is
open
source.
We
spent
a
lot
of
of
energy
to
the
documentation
to
the
quality
of
our
code,
so
yeah
we're
here
for
the
long
term,
we'd
like
to
have
many
contributors
and
yeah
Reach
Out.
Thank
you
guys.
B
Hi,
thank
you
for
the
talk
that
was
super
interesting,
so
my
question
was
about
updating
of
ZK
badges,
so,
for
example,
in
the
example
you
gave
you
said
you
own
the
punk,
and
then
you
create
the
zika
badge
that
you
own
the
punk.
What
happens
to
that
badge
when
you
transfer
the
punk
and
don't
own
it
anymore?.
A
A
You
could
code
that,
like
the
way
to
for
a
central
party
to
update
the
route
and
make
sure
that
the
badges
that
were
issued
are
no
longer
issued,
but
I
think
that
it's
still
a
bit
complex
and
the
best
way
is
really
to
think
about
DK
badges
as
a
snapshot
attestation,
and
it's
up
to
the
application
to
ask
for
users
to
renew
so
yeah.
That's
really
the
way
we
think
about
it.
Now.
C
Hi,
thank
you
very
much.
Really.
Cool
stuff
lack
of
privacy
is,
of
course,
one
of
the
barriers
in
this
ecosystem.
So
thank
you
for
addressing
that.
I
have
a
general
question
about
how
do
you
collaborate
with
individuals
and
and
projects
within
the
space,
because
at
the
end
of
the
day,
it's
about
going
to
Market
and
it's
it's?
Promoting
your
tool
to
yeah
individuals
and
teams
that
are
building
could.
A
A
So
I
think
we
are
a
project
that
that
should
be
used
by
many
applications.
First,
I
think
that
we
are
one
of
the
first
teams
that
are
using
ZK
for
a
very
concrete
case
and,
as
I
told
you
about,
we
can
have
multiple
zika
testers.
So
if
we
have
a
ZK
team
that
has
created
a
musical
scheme,
we
are
using
row
16
Hydra
as
well.
That
is
very
specific.
A
But
if
another
team
has
another
way
to
create
attestations,
we
can
think
about
change
links
GCO,
for
instance,
they
are
able
to
do
the
characterization
from
web
to
data.
They
will
come
to
visitor
here
and
that's
why
we
beat
it
for
other
teams.
It's
if
you
want
to
do
repetition
within
your
governance.
You
can
create
your
ZK
badge
or
even
better.
You
can
create
your
own
zika
tester
and
build
logic
in
it,
and
so,
whenever
somebody,
let's
say
Minto
ZK
badge
that
I
played
on
on
a
certain
game.
A
D
Have
a
question
here
really
fascinating
talk
super
amazing
and
one
of
the
things
that
popped
into
my
mind
when
you
said
that
this
is
comparable
to
the
D5
movement
of
the
D5
summer.
D5
came
with
a
lot
of
hacks
and
a
lot
of
blood
by
fire.
So
how
do
you
protect
the
Privacy
say
we
put
all
our
addresses.
Have
this
like
great
identity?
And
you
know
how
yeah
some
of
the
risk
of
that,
and
what
do
you
see
for
that?
Yeah.
A
When
I
was
doing,
that
is
that
D5
was
raw.
It
was
the
first
time
we
discovered
like
before
Banks
and
insurance
and
all
like
all
the
financial
services
were
provided
by
webto
applications
that
didn't
talk
together
and
we
discovered
what
I
can
deposit
in
a
lending
tool
and
then
use
that
to
bring
Nicky
duty
to
an
exchange
and
then
use
that
to
take
somewhere
and
it's
huge,
but
we
could
do
the
same
with
social
Capital
like
today,
it's
impossible
to
use
your
let's
say
you
are
Uber
driver
2000
drives
five
stars.