LINE+LINK-DEV 2018 - ICON’s Interchain Technology and Developer Tools

©2018 ICON Foundation
ICON Interchain Technology and Development Tools

2@2018 ICON Foundation
How to Survive among Crypto Giants?

How to survive among crypto giants?
How to make enough and valauble transaction?
• Daily Etherium Transaction : 500K
• ETH DApp Transation Rate <15%

How to make
Valauble transaction?

Table of Contents
01. Interchain Protocol
02. Developer-friendly Policies and Tools

ICON Vision
A rhizome has no beginning or end; it is always in the
middle, between things, interbeing, intermezzo. The
tree is filiation, but the rhizome is alliance, uniquely
alliance. The tree imposes the verb "to be" but the fabric
of the rhizome is the conjunction, "and ...
and ...and..."This conjunction carries enough force to
shake and uproot the verb "to be." Where are you going?
Where are you coming from? What are you heading for?
These are totally useless questions.
- Mille Plateaux, Gilles Deleuze & Felix Guattari
"Hyperconnect the world"

ICON Strategy
Hyperconnect the World
Build a community of communities based
on the consensus to our governance and
protocol

Benefit from Interchain Technology
Trade Real-World Assets on Blockchain
• By integrating services, the transactions can gain a legal and trust
• Trade asset with Financial institution service, Government service etc
Disrupt barrier between heterogeneous blockchain users and contract
• Cross change state DB of different blockchain
• Heterogeneous mainnet token value transfer
Oracle Solution based on Private Blockchain & Interchain
• Current Killer Application: New Token Generation, CryptoKitties
• Private Chain is great choice to solve oracle problem
• Trustful data creation time, liability
• Low Reputation Risk
• Mashup service

Enterprise
blockchain
ICON Interchain Solution - Blockchain Transfer Protocol (BTP)
BTP Overview
• Support BTP 0.5 - Relayer based BTP and BTP 1.0 Simulation based Atomic BTP
• ICON Nexus coordinates BTP requests and responses
• C-Rep is responsible for managing BTP messages between ICON and heterogeneous block chains
Ethereum
Blockchain ICON - Nexus
C-repC-rep
P-rep
P-rep

BTP Core Component in BTP 0.5
• C-rep Relayer
Monitor BTP message occurred in their community blockchain
Send BTP Request/response to BMC of target blockchain
• BTP Management Contract - BMC
Receive BTP Request/response and Create the TX
Execute target smart contract function
1. BTP Request
Body
TxHash (Hex) : Transaction that invoked BTP request
From (String) : ID of blockchain
To (String) : ID of blockchain
ChildTargets (Arrays) : Blockchains associated with BTP
Request
Sequence (Positive int) : Sequence of BTP request from same
TxHash
Input (Unknown): BTP Request Input
Output (Unknown) : Expected return of BTP Request
IsQuery (Boolean) : True if the request does not change state
Proof (Unknown) : Proof data that Body exists in blockchain
2. BTP Response
Body
TxHash (Hex): Transaction that invoked BTP request
From (String) : ID of blockchain
To (String) : ID of blockchain
Result (Boolean) : Verification of BTP request
Proof (Unknown) : Proof data that Body exists in blockchain

Enterprise
TRON
ontology
CardanoEOS
Through BMC and Relayer, users can use heterogeneous and cross blockchain service
Ethereum ICON - Nexus
ETH BMC
ETH C-rep
Relayer
TRON
BMC
Enterprise
C-rep Relayer
Enterprise BMC
Enterprise
C-rep Relayer
Ontology BMC
Ontoloty C-rep
Relayer
EOS BMC
EOS C-rep
Relayer
Cardano BMC
Cardano
C-rep Relayer
ETH User TRON Dapp Service
Benefit #1
No need to make multiple wallet
Benefit #2
No need to buy multiple token
TRON DApp
ETH Wallet

BTP 0.5 POC ( Relayer Protocol ) : Request part
Request ChainID for KYC
to participate ICO
Generate BTP Request 1 TX
ETH Blockchain
KOFIA private
Blockchain
ICON Blockchain
(Nexus)
ETH Wallet User
TX
Receipt
ETH BMC
Recognize TX Receipt
of BTP Request
ICON BMC
ETH C-rep
Relayer
Request BTP Request 2 TX
BTP Request 1
Body
TxHash : Ethereum Transaction ID
From : Ethereum ID
To : ChainID ID
Input : (ContractID, MethodName, param1, param2 ….)
Proof
Receipt Merkle path
Block Header
TX
Receipt
Generate BTP Request TX
KOFIA C-rep
Relayer
Recognize TX Receipt
of BTP Request
KOFIA BMC
Request BTP Request 3 TX
TX
Receipt
ChainID
Contract
BTP Request 2
Body
TxHash : ICON Transaction ID
From : ICON ID
To : ChainID ID
Proof
Receipt Merkle path
Block Header
Leader List Proof
BTP Request 3
Body
TxHash : ChainID Transaction ID
From : ICON ID
To : ChainID ID
Proof
Receipt Merkle path
Block Header
Leader List Proof

BTP 1.0 POC ( Simulation based Atomic Protocol ) : Commit within 5 Step
Nexus
Chain A
Chain B
Simulating BTP
Request &
Register
BTP Requests
Lock State
Lock State
Register
Locking Evidence
Commit
State
Commit
State
BTP Request
BTP Request BTP
Response
BTP
Response
BTP Commit
BTP Commit

ICON with Full
BTP Interoperability
Connect heterogeneous
blockchains and real world

We understand benefits in enterprises, key puzzle

We understand the benefits, challenges, and opportunities in enterprises
Exchanges
Online banking certificate issued by 25
securities firms on blockchain
CHAIN ID
A campus crypto platform on a smart
vending machine.
Pilot service running at Sogang
University and Postech University
U-coin
Pilot test with Kyobo Life Insurance, a major life
insurance company in South Korea
Automated Insurance Claim

Unchain Blockchain Platform
 The LINK ecosystem is based on LINK Chain, built by Unchain
using ICON platform & technologies
LINK Chain
Joint Venture
Co-founded by
Features
 Consortium Blockchain + Private Key Management
 High Throughput
Mass Token Transfer (ex>1M Batch) /Root chain-leaf chain
 DApp
User-friendly Interface Layer / LINK Framework (API Server)
 Scalability
Scalable to process over 10M DAU data

Building the Next Generation Election System
 Online voting facilitates a simple and reliable system
 Data becomes reliable by adopting blockchain to the
institutions, voter authentication and vote verification
Online Voting System based on Blockchain Major Issues
 Issue institutional certification on blockchain
 Issue voter certification on blockchain
 Implements voting wallet using tokens based on blockchain

Customs Clearance on Blockchain
 Customs
e-C/O(Certificate of Origin) issue request/validation
 Express Carriers
Uploadfare and shipping information
 E-Commerce Service Provider
Upload information on products, identification, price
Smart Personal Clearance Service Platform
특송업체
Node
특송업체
Node
전자상거래
Node
전자상거래
Node
관세청
UNI-PASS
Node Goal
 Share accurate logistics flow and customs information by
uploading custom list on blockchain

Seoul Metropolitan Government Blockchain Test Pilot
 Establish a trust system of the used-car trade
Prevent forgery/ modulation by storing used-car history in blockchain
 Citizen Participatory Democracy (M-Voting)
Achieve reliability and transparency of vote-counting verification by
applying the blockchain system to online election
Commercial Use Case
Proof of Concept
 Integrated certification of Seoul citizen card
 Seoul Mileage Integration
 Automatic sub-contract payment
중고차
M-Voting
Citizen card

Table of Contents
01. Interchain Protocol
02. Developer-friendly Policies and Tools

Developer tools comparison
ETH EOS ICON
Smart Contract Development Solidity C/C++ Python
SDK to call Smart Contract JS, JAVA, Python Node, Ruby JS, Python JS, JAVA, Python, Swift
Dev tool to interface Node Remix ( Web ) Cleos ( CLI ) Tbears ( CLI )
Local Blockchain Environment GETH EOSIO Tbears
Block Tracker https://etherscan.io/ https://eostracker.io/
https://tracker.icon.foundation
https://trackerdev.icon.foundation/

Developer-friendly ICON on-chain governance
Delegated Proof of Contribution Reasonable Dapp usage Fee Incentive System for Developers
• Incentive system that allocates
block rewards based on level of
contribution (e.g. Smart Contract
operators)
• Fee can be shared by Smart
Contract operators and users
• Smart contract operators can save
fee by staking ICX tokens
• Major Incentive will be distributed
for DApp developers according to
IISS(ICON Incentive Score System)
• IISS has a lot of importance to
developers who can make
transactions

DEVELOPMENT ENVIRONMENT: T-Bears
 Programming Language: Python
 Developed locally, distributed to Store
before testing
 Runs on Native Runtime Environment like
Container (CPython)
 Composed of loopchain nodes deployed
to Docker
SCORE
(Smart Contract On Reliable
Environment)
 Dev tools for easy development of ICON’s
Smart Contract(SCORE) and ICX
Transaction
 Localdevelopmentand localexecution
 Available to deploy to testnet/mainnet after
finishing the development
[Use Cases]
 SmartContractfor token generation
 IIP,IRC tokenstandard
 Smart Contract Address
 Deployed to testnet and mainnet with
contract codes on Tx instead of
 Future VM support (Solidity, Java)
T-bears

DEVELOPMENT ENVIRONMENT: Open Source
https://github.com/icon-project

ICON Developers Portal: icondev.io
A community portal for ICON DApp ecosystem
Getting Started
Tutorials for developers to get started
SCORE
Details on ICON’s Smart Contract, SCORE
Community
Forum for Korean/English developers to discuss and communicate
DApp
Overview of ICON DApp Partners
Testnet Service
Test out on ICON Mainmet / Testnet

DEVELOPMENT ENVIRONMENT: Components
Type Name Desc Features Notes
SDK
Java SDK V3
Java-based SDK that works with
ICON network
- ICON block/tx browsing
- ICX transfer
- SCORE execution
- Available to create applications that connect to ICON in a Java-base
environment
- Supports SCORE execution as well as ICX transfer
- Connects with ICON network by only using SDK, instead of impleme
ting JSON-RPC specification directly
Python CLI
Python-based CLI tool that works with
ICON network
- Wallet creation and management
- ICX transfer
- Supports CLI-based wallet creation and ICX transfer processing
- Supports CLI-based wallet balance browsing
- Available to add various CLI-based utility functions
Python SDK V3
Python-based SDK that works with ICON
etwork
- ICX transfer
- SCORE execution
- Available to create applications that connect to ICON in a Python-b
ed environment
- Supports SCORE execution as well as ICX transfer
- Connects with ICON network by only using SDK, instead of impleme
ting JSON-RPC specification directly
Service T-Bears
Python-based SCORE Development
and Emulation Tool
- SCORE download and execution emulation
- ICX transfer emulation
- Step emulation
- SCORE deployment and execution linked with ICON n
twork
- ICX transfer linked with ICON network
- Compatible network connection with ICON mainnet a
d private ICON
- SCORE development/debugging available without actual blockchain
etwork deployment for DApp development
- SCORE deployment available on mainnet and various ICON compat
e networks
- Lint and validator features will be added in the near future
Core
ICON Service
Module supporting ICON main functions,
linked with blockchain core
- Linked with loopchain
- SCORE download and execution
- ICX transfer processing
- Step processing
- ICON main functions (including Tx propagation/validation,
consensus) available
- IISS(scoring system for incentives) and governance will be
in the near future
loopchain
Blockchain engine that supports
LFT-based consensus
- Supports LFT-based consensus algorithm
- Tx prevalidate, validate, voting, commit
- Linked with ICON Service
- BTP(Blockchain Transfer Protocol) will be supported in the near
Citizen Node
Full node that does not participate in
consensus but supports all functions
- loopchain + ICON Service w/o consensus
- Provides separate instructions for Citizen node configuration, deplo
ment, and operation

DEVELOPMENT ENVIRONMENT: Components
Type Name Desc Features Notes
Wallet
ICONex Desktop Desktop wallet for Chrome browser plugin
- ICON Wallet creation, import/export, deletion
- ICX transfer
- ETH Wallet creation, import/export, deletion
- ETH transfer
- ETH ICX Token exchange with ICON ICX
- ICX transfer linked with third party Web Applicati
ns- Support for Ledger Nano S
- Allows third parties to develop various ICON wallets for deskt
ps
- Smart contract call function added
- Supports smart contract features for Web Applications
ICONex Android Wallet app for Android
- ICON Wallet creation, Import/Export, Deletion
- ICX transfer
- ETH Wallet creation, Import/Export, Deletion
- ETH transfer
- Allows third parties to develop various ICON wallets for Andr
d
- Supports smart contract features for Android apps
ICONex iOS Wallet app for iOS
- ICON Wallet creation, Import/Export, Deletion
- ICX transfer
- ETH Wallet creation, Import/Export, Deletion
- ETH transfer
- Allows third parties to develop various ICON wallets for iOS
- Supports smart contract features for iOS apps
Nano S
Integration
ICONex Desktop and Ledger Nano S HW w
let support module
- BOLOS Application
- JS Library for the application
- Tokens will be supported in the near future

ICONex Wallet
Multiple
Cryptocurrencies
 ICX/ETH coin &
token storage,
withdrawal,
remittance
 ICX ERC20 token
swap
 DEX (To-be)
ICON’s official wallet supports various cryptocurrencies Including ICX and ETH
User-friendly UX/UI
 All-in-one Wallet
 Wallet Lock
 ICONick(To-be)
Smart Contract
 Desktop wallets
available for Third
Parties development
 Smart Contract
function call
 Web Application
integrated with
Smart Contract
Android, iOS, Ledger Nano S Available Now

200+ members are putting their most precious time in ICON Blockchain
Consensus
New
Core Infra
Public Dev
EnterpriseGlobal
Marketing
Council Member
(4)
Basic Tech
ConsultingBusiness Dev QA
Planning
Communication
Product Dev
Development
(150+)
Operation
(10)
Business
(40+)
Finance
Legal
Biz Support
Investment
HR
Dex Dev

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