[Music]
[Applause]
okay so hi everyone my name is el gusto
I have been working with the Radian
project for the past two years and today
I'm going to present to you guys what we
have done for the past year and what is
included in Developer Preview so for
those of you that doesn't know our Aidan
is Ana scalability solution that we have
built for idiom and it can be scaled to
a padded million of transactions per
second okay so I'm gonna give you a
quick agenda of my talk this is going to
be split into parts and the first ten
minutes I'm going to talk about Radin
and the second half for this the last
ten minutes we are going to talk about
the micro rating so for the raiden we're
gonna talk about the Radian api's rating
is exposing an HTTP restful api so that
you guys can use to build applications
on top of it and at the go of my
presentation today is to explain to of
you how you can use Radian to be build
apps and of that regard we're going to
talk about how can you join the rail
network once you have joined the radio
network how can you make transfers and
how can you react to transfer that you
know it has received
so that's agenda so first things first
the setup phase so written is an open
source project we have it available in
github and under the release basic pages
we have an app image that any of you
guys can use from cell Rayden it's an
executable you can just download and
start running in your machine right now
Rayden only works on Linux we are fixing
some issues with Mac OS in a week in the
next release you should be able to use
Radian on Mac OS q for the moment we
don't support Windows and also I want to
point out that Braden is not an eighth
note Radian is a separate process that
communicates within a theory node so to
use Braden you will also need an
ethereal node running on the machine
that you're working on and for that for
the Brayton process to communicate with
the fear node we you will need to enable
JSON RPC because that's the current
interface that we use to communicate so
once you have this set up then let's
decide how to talk about how you've
written so the first thing that you want
to do once you have read installed is
you can actually read in network
and the Raiden Network in the in the
rating process we have to api's to
connect to the network the first one
that I'm going to present to you guys
it's the endpoint for connections this
is an automatic way of setting up
channels that rating is going to manage
for you guys and in the the goal of this
this end point is for you guys to
configure Raiden telling how much token
Raiden should use to manage and open
channels with the network so our goal is
to never start using the tokens for that
account that's configured with Raiden
without user permission and you need to
use that endpoint telling us how much
funds do you want to use once you have
used the endpoint Rana knows which funds
you want to use how much of it you're
allowing Raiden to use and then reading
will manage channels for you on your
behalf so that's the automatic channel
management you can use it with the port
verb in the API one connections endpoint
if you don't want to use the automatic
management you can open channels by hand
that's done by the put a verb in the
channels endpoint and that's basically
the same thing but you're going to
manage the channels on your own you just
specify everything that you want you use
in the JSON that's going to be sent to
the server and the Raiden will use the
data that you provide to it to open
channels so everything like the token
address the amount of funds the target
know that you're connecting to it's
defined by you so these are the two
api's for connecting to the network once
you have connected to a network
you have channels available to be
managed the way that you can manage the
channels open with Raiden is by using
the patch keyword the patch verb for the
HTTP and now you can then patch the
current status of your channel and
increase the deposit if you want you
have more funds to make more transfers
or you can change the state of the
channel by closing it once you close the
channel reading will automatically wait
for the settlement period
letsa period that we have for dispute
resolution and once the dispute is over
Raiden will withdraw your tokens from
the channel using the proofs that was
available by both of the parties in the
in the channel so that's everything that
we need to know on how to connect to the
radio network
and once you have connected to trade and
networking or have channels opened you
can make transfers so to make transfers
you can use the post verb with the
transfers and end point and that an end
point is going to expose you guys hash
time lock mediated transfers so hash
time locks are a nice abstraction that
we can use and that makes for a
concealable and expire both transfers so
that's the best kind of transitions that
we have that expose the nicest error
model for people to build applications
on top for making transfers there is an
important detail that resin is not part
of your application
Bradon is a server that's running on a
computer that you're going to
communicate through recipe ice and you
need to provide some knowledge or some
application specific data to read in so
that both of the nodes the one that
Spain and the one that's receiving the
payment know what the payment is regards
you so let's assume that you're building
an e-commerce application or something
that needs to make a payment for the
e-commerce application you can give an
identifier to a cart and I use that
identifier as part of the transfer so
that's the way that the client
application can tell the the part the
node that's being paid what the payment
is about currently we don't allow in the
current version of the API which is an
arbitrary data that may change in the
future that's just the current transport
that we have available ok so once you've
made transfers that's two parts of the
agenda the last thing that you want to
do is react to receiving payments for
the radio network and that can be done
by pulling for events in the radio node
we are just providing a simple API for
the moment with pulling in the future
view we will add maybe a long pulling or
a different transport that can push
events for you but the way that you can
react to payments is by watching for the
even transfer received that even is
emitted every time that you receive a
payment and then you can react to it and
that event will have the identifier and
the token and the amount of the transfer
that you received so that's everything
that you need to know about the
endpoints available in Braden and with
that you can be replications on top of
it
that
payments using the brilliant Network so
if you want your tears Raylan we
currently are doing a Developer Preview
so it's not available in the manor
it's only available wraps in a test
network and on the robson that test
network we have deployed hourly rate in
our smart contracts and including the
Radian test open and with the Braeden
test open we have made available a mint
method that are you can use to mentor
yourself some test tokens and use that
test token to make payments in the test
network so once you have used the brain
best tokens you get yourself some tokens
in the test Network you can connect you
some notes and here is a note that you
may try to use we have made it it's a
programmable node that's just gonna
reply the transfers that you make to it
with a transfer of the same amount and
same token the case the radiant desktop
and if you want you can actually test
and test network using the automatic
connection endpoint we have made
available a test network with a hundred
reading nodes so when you use the
automatic connection management you're
probably going to connect to one of our
nodes and everything is going to work as
expected so these details are I'm not
gonna focus too much on them they are
all available in the documentation and
as an example of an application built on
top of reading we have built the web UI
so the web UI is one of the UI's that we
have available for the Braden project
and the web UI is available in our
source code that you can just find in
the your why folder and that it's built
using these endpoints that I have showed
you guys so that's everything that I
have to show you that's how you need to
note to build applications on top of a
Braden and if you want more additional
details on the format of the JSON files
the response and different verbs are
different endpoints that we have
available you can go to the read and
network read the docs and we have much
more information there including how to
deploy your own tokens and use a
different test network if you don't want
you use the rocket robson test network
so with that I'm just going to live for
blue denim that's going to talk about
micro micro Raylan
[Applause]
hello
I'm Nora Dunham one of the developers
that contributed to micro Radin I'm
gonna tell you today what is micro
grading for what you can use it and I'll
also show you a small live demo of a
token fueled robot so what is micro
Radin micro Radin is a robust of chain
payment channel framework and it's easy
to use off-the-shelf it is good for 80%
of the use cases that someone can think
of when they are thinking of using Radin
for their own service or business it is
a unidirectional many-to-one
implementation which means we don't need
to think about routing issues and
incentivizing fees for users who have
open channels and want to share them
with others that this is why we have off
key transactions that are fast and free
micro Radin is available now on the
Kelvin test net and will be available on
the main net by the end of November
which is by the end of this month so
what can you build with micro Radin for
human consumption the most
straightforward use case is paper use
and we already have two demos one with a
fortune cookie paywall that is online
now and an unpleasent alternate world
where you pay for Wikipedia but the most
interesting use case is the the
machine-to-machine micro payments that
you can do so basically if you have an
API that you want to monetize you can
use micro use micro Rayden
from utilities to data storage to
scheduled API queries and we already
have machine-to-machine demo where we
query the price of ether in u.s. dollars
each second and you can see the entire
lifecycle of our channel from opening to
depositing new tokens to closing it and
also see the off chain micro payments
how are they created and received and
now for the live demo I want you to bear
with me a little bit so this is Robo and
I hope there's a camera yeah Robo has
his own aetherium address
and he uses micro Raiden to be paid in
tokens for his work we already have an
account here with Robo this is the
JavaScript client and we used no dreads
for this dashboard and we can see that
we already have an open channel with a
deposit of 50 tokens and a channel
balance of two tokens which means that
we already paid Robo two tokens for his
services we have a remote control for
him and the buttons for a forward back
right left back left and back right are
connected to a micro payment endpoint
this is the micro Raiden server and we
can see that the JavaScript client has
signed a balance proof for us and that
instantly the micro Raiden server has
received that payment
and sorry I don't have enough time to
show you everything sir and you can see
that the balance has increased with
every press of the button you can of
course do this by timing the robot or
measuring the distance but this was I
mean we implemented this very very fast
in a couple of days so it's not that
complicated
ok what we can do when we remain or
without tokens is go to our account and
deposit more and this is an on chain
transaction so what you've seen until
now are off chain micro payments and to
verify this we can go to either scan and
see that the transaction will be
included in the Box ortley and we can
also see the micro raid and server
registering the event for depositing new
tokens of course when we've finished
everything with Robo we can close the
channel and again we can verify in ether
scan that this is an on chain
transaction and the micro radiance
server has also received this ok going
back to the presentation the code for
this for the examples are in the micro
Raiden repositories
under microwave and microwave and
examples and for the robot the token
hungry car we will link it in the readme
but for now the Jason for setting up the
node Reds dashboard is in one of my
personal repositories so to recap a bit
you can open a channel on chain you can
deposit tokens on chain you can close a
channel on chain but the essence of
micro Radin are the micro payments that
are done off chain fast and free between
closing between opening and closing a
channel I'll try to make it fast a
simple explanation of how it works the
sender and the receiver both keep copies
of the channel data which is receiver
and sender etherium addresses the block
number at which the channel has been
created and the current balance because
we've seen that the balance increases so
it's the last status and also the
receiver has the last balance proof
received from the sender what is the
last balance proof it's basically a
message signed by the sender which
contains the current balance the block
number and the receivers address the
micro payment works like this the sender
sends all this data along with his
signature to the receiver the receiver
provides the resource and also saves
this signed balance proof we also
support the ERC 223 in work standard
along with the ERC 24 opening a channel
and depositing tokens because the RC 223
offers us the possibility of consuming
less gas because we only do one
transaction instead of two for approving
and opening a channel I'm going to skip
this very fast
maybe tell you a little bit about
closing a channel and we can do this we
can find ourselves in three states one
is a cooperative closed which is the
best case scenario when the sender where
is the receiver for a closing signature
and then closes the channel himself by
providing his balance signature and the
receivers closing signature and
everything is well and good if anything
goes from we have a challenge period
where the channel can be closed by the
receiver by providing that last balance
proof saved in conclusion my croydon is
ready to use it is the go-to solution
for frequent fast and free ERC twenty
token-based of chain micro payments on
the etherium blockchain and don't forget
robots also won crypto Thank You
Loredana
you
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