SlideShare a Scribd company logo
1 of 50
Download to read offline
Arena
Thomas Marckx – theledger.
Part of theCronos Group
ThomasMarckx
thomas.marckx@theledger.be
Blockchain ‘dude’
@ThomasMarckx
Let’s start your blockchain adventure
TRAIN • ADVICE • PROTOTYPE • BUILD
COMMUNITY
TECHNOLOGY • EDUCATION • BUSINESS
“Privacy is the foundation
of free societies”
- Don Tapscott
“A lack of transparency result in distrust
and a deep sense of insecurity”
- ‘the’ Dalai Lama
塊鏈
DEcentralisation
The Internet of Information
Information VS Assets
Subjective theory of value
Value by witness
Consensus by witness
Trust by witness
Business by
Blockchain !
Auditeur
$
BANK
Company BCompany A
Company C Company D
Inefficient – Expensive – VulNerable
Auditeur
$
BANK
Company BCompany A
Company C Company D
Consensus – Provenance – Immutability – Finality
a mechanism to draw
fact-based conclusions
In an auditable way
CONTRACT
CONTRACT
Third party
Asset Transfer
CONTRACT
CONTRACT
ASSETTX
Decentralized
Immutable
Database
PEER
PEER
PEER
…
…
PEER PEER
The Internet of Assets
PEER
PEER
PEER
PEER PEER
School B
School A
STUDENT
Company
Bitcoin Diploma
But wait, there’s more
CONTRACT <contract>1
2
3
4
5
6
7
8
29
30
.
.
.
</contract>
Smart Contract
‘REAL’ Smart contracts
Self-executing contractual
(consistent) states, a.k.a.
distributed business logic
Abstracting distributing
programming to represent
meaningful social or
commercial contracts (beyond
simple coin exchange
between two parties)
Trusted, shared execution
Smart Contracts
Cryptographic tokens with
programmatic behaviors
Programmable currency DAO
Same code + same data =
same result
Implemented smart
contracts and smart
property as trusted tamper
proof code on a blockchain
Smart properties
Digital Assets that
understand their ownership
and can be exchanged P2P
Physical Assets, a Ledger
of Things, linking smart
contracts to IoT
PEER
PEER PEER
PEER PEER
…
…
The Internet of Automation
It’s not a database !
WhERE is it relevant?
Proof of ownership
COntracts
Payments / PRICING / accounting
Digital profile
ASSET Tracking
CROSS Sector
USE CASE
Public sector
Voting
Distributed Ledger network
Smart contract
ballot
Smart contract
ballot
Smart contract
ballot
Smart contract
ballot
Smart contract
ballot
Smart contract
ballot
Smart contract
ballot
USE case – Voting
USE CASE
Cross industries
E-commerce
USE case – e-commerce
<contract>1
2
3
4
5
6
7
8
29
30
.
.
.
</contract>
STORE
€$
¥
Identity
& KYC
Validated IDentity
Trust by Technology
Trustworthy by Reputation
(Government, Banks, …)
Competent
4 life
Competences sharing
Confirm
competence
To the future and beyond…
Short term future
2015 2016 - 2017 2018 - 2024 2025 •••
Explorationand
development
Early adoption Growth maturity
Initial capability and use-
case assessments
Early adaption likely for
internal reconciliation
Leading banks see the
value and begin begin
deployments for asset
classes bilaterally traded
and/or have no central
clearing authority
Regulatory certainty
drives adoption for
external uses
Regulatory authorities
realise the benefits for
auditing and compliance,
rule-making begins
Banks begin to see the
benefits experienced by
early adopters and
combined with regulatory
guidance and certainty the
network effect takes hold
New service providers and
models emerge
Deployments go viral across
numerous asset classes
New products/services are
created; incumbent
processes/services are
discarded
Blockchain adoption is
considered mainstream
and integral to the capital
markets ecosystem
Questions ?
Shout !
… let’s play with blocks
http://blockchainbelgium.be
http://theledger.be @wearetheledger
Veldkant 33B
2550 - Kontich
info@theledger.be
+32 479 52 61 10
B-Hive / Eggsplore – Identity
Tele-ticketing – sale & resale of tickets
Digipolis– Competence registration
Blockchain evolution
Blockchain 1.0
Blockchain 2.0
Blockchain 3.0
Digital currency : the deployment of cryptocurrencies in applications
related to cash transfers, remittances and payment systems
State machine / distributed DB
Digital contracts (shared P2P business logic): the entire panoply of
economic, market and financial applications using the blockchain and
that are more extensive (complex multi-party) than simple currency
transfers: i.e. stocks, bonds, futures, loans, mortgages, titles, smart
property (IoT + Blockchain) and smart contracts (code deployed on
blockchain)
Digital applications beyond Fintech (currency, finance, markets). Areas
such as government, health (records), science, literacy, culture, art…
Blockchain 3.0
Skynet is coming
Middle term future – WEB 3.0
Decentralized web hosting via blockchain tech
Ownership of website
No more ddos attack
Real privacy (bye bye nsa)
We talk with or via smart contracts, not through centralized servers
Dao’s
Distributed autonomous/automated organizations
Rise of sentient enterprises on a blockchain
Everyone a sans-papiers
Combination with other technologies
e.g. Iot, machine learning
Long term future – WEB 3.0
CRYPTO ECONOMy 3.0 – The ROBOCORPS
Tradenet
Robocorps, DAO’s en DAC’s
Taxis, government, Agencies
Distributed Autonomous Government
Virtual realityand the blockchain
Liquid Currencies
Proof-of-Concept
2
Production
Think
Is it a Use-case?
Stakeholders?
Requirements
Workshop Collaboration
Digital token
Smart contract
sandbox
Integration
Front-end
Iterations
Live
Blockchain
environment
Next steps
build Deliver
Technologies everywhere
Hyperledger - Fabric
Ethereum
Multichain
Bigchaindb
Hyperledger - Corda
NEM
Aeternity
Hyperledger - Irohu
Hyperledger
- saw tooth lake
… blockchain READY!
MULTIPLE DEPARTMENTS
START WITHA ‘FEW’ NODES
GROW NETWORK – ADD MORE NODES
INCREASE DECENTRALIZATION
MULTIPLE FUNCTIONALITIES
START WITH‘ONE’ FUNCTION– E.G. Simple Asset registration
Grow application– more complex smart contracts
INCREASE automation
PEER
PEER
PEER
PEER PEER
The SANDBOX experience Blockchain-Ops
Cloud solutions
IBM – 4 hyperledger fabric nodes
+ 1 memberschip services
Microsoft – 10+ Ethereum nodes
+ Mining nodes
On Premise
Hyperledger Fabric
Ethereum
Bigchaindb
Combination possible
Monitoring tools available
’Howdy … partner
Microsoft
IBM
Chainthat
HOWEST
JURU
Consensys

More Related Content

What's hot

Blockchain and Accounting-Auditing v1
Blockchain and Accounting-Auditing v1Blockchain and Accounting-Auditing v1
Blockchain and Accounting-Auditing v1
Jaiveer Singh
 

What's hot (20)

Crypto currencies The internet of Money
Crypto currencies The internet of MoneyCrypto currencies The internet of Money
Crypto currencies The internet of Money
 
Blockchain Organiseren
Blockchain OrganiserenBlockchain Organiseren
Blockchain Organiseren
 
Visa digital currency
Visa digital currencyVisa digital currency
Visa digital currency
 
Blockchain technology a primer
Blockchain technology   a primerBlockchain technology   a primer
Blockchain technology a primer
 
Hacking Finance: Crypto & Math based Currencies, Smart contracts and Blockch...
Hacking Finance: Crypto & Math based Currencies, Smart contracts  and Blockch...Hacking Finance: Crypto & Math based Currencies, Smart contracts  and Blockch...
Hacking Finance: Crypto & Math based Currencies, Smart contracts and Blockch...
 
What is decentralized finance ( de fi )
What is decentralized finance ( de fi )What is decentralized finance ( de fi )
What is decentralized finance ( de fi )
 
Btl; Imagine a World
Btl; Imagine a WorldBtl; Imagine a World
Btl; Imagine a World
 
Anonymous CBDC? No thanks.
Anonymous CBDC? No thanks.Anonymous CBDC? No thanks.
Anonymous CBDC? No thanks.
 
IBM Blockchain Experience - Suwat - 20161027
IBM Blockchain Experience - Suwat - 20161027IBM Blockchain Experience - Suwat - 20161027
IBM Blockchain Experience - Suwat - 20161027
 
Blockchain for Financial Institutions (the beginning)
Blockchain for Financial Institutions (the beginning)Blockchain for Financial Institutions (the beginning)
Blockchain for Financial Institutions (the beginning)
 
The Studio On Air : blockchain & AI
The Studio On Air : blockchain & AIThe Studio On Air : blockchain & AI
The Studio On Air : blockchain & AI
 
Blockchain and Accounting-Auditing v1
Blockchain and Accounting-Auditing v1Blockchain and Accounting-Auditing v1
Blockchain and Accounting-Auditing v1
 
John Davies of C24 - BlockChain - Blockbuster or Bullshit?
John Davies of C24 - BlockChain - Blockbuster or Bullshit?John Davies of C24 - BlockChain - Blockbuster or Bullshit?
John Davies of C24 - BlockChain - Blockbuster or Bullshit?
 
Columbia Law School - Decentralized Ledgers Presentation on 4/7/2014
Columbia Law School - Decentralized Ledgers Presentation on 4/7/2014Columbia Law School - Decentralized Ledgers Presentation on 4/7/2014
Columbia Law School - Decentralized Ledgers Presentation on 4/7/2014
 
Blockchain @ Capitant FinTech Day Antwerp
Blockchain @ Capitant FinTech Day AntwerpBlockchain @ Capitant FinTech Day Antwerp
Blockchain @ Capitant FinTech Day Antwerp
 
Use Cases
Use CasesUse Cases
Use Cases
 
Blockchain case study powerpoints: Brief intro
Blockchain case study powerpoints: Brief introBlockchain case study powerpoints: Brief intro
Blockchain case study powerpoints: Brief intro
 
What is DeFi ? | Decentralized Finance
What is DeFi ? | Decentralized Finance What is DeFi ? | Decentralized Finance
What is DeFi ? | Decentralized Finance
 
From 7331 to legal : a selection of blockchain discussion topics
From 7331 to legal : a selection of blockchain discussion topicsFrom 7331 to legal : a selection of blockchain discussion topics
From 7331 to legal : a selection of blockchain discussion topics
 
Can a blockchain solve the trust problem?
Can a blockchain solve the trust problem?Can a blockchain solve the trust problem?
Can a blockchain solve the trust problem?
 

Similar to Blockchain for Business - The Ledger - ARENA

Similar to Blockchain for Business - The Ledger - ARENA (20)

Blockchain for Digital Transformation in Telco
Blockchain for Digital Transformation in TelcoBlockchain for Digital Transformation in Telco
Blockchain for Digital Transformation in Telco
 
Openbar 10 - Leuven - The Past, Present. And future of shared ledger technolo...
Openbar 10 - Leuven - The Past, Present. And future of shared ledger technolo...Openbar 10 - Leuven - The Past, Present. And future of shared ledger technolo...
Openbar 10 - Leuven - The Past, Present. And future of shared ledger technolo...
 
Use case of block chain unit 4 AKTU
Use case of block chain unit 4 AKTUUse case of block chain unit 4 AKTU
Use case of block chain unit 4 AKTU
 
Blockchain Trends & Business Cases
Blockchain Trends & Business CasesBlockchain Trends & Business Cases
Blockchain Trends & Business Cases
 
Exploring Blockchain Technology, Risks, and Emerging Trends
Exploring Blockchain Technology, Risks, and Emerging TrendsExploring Blockchain Technology, Risks, and Emerging Trends
Exploring Blockchain Technology, Risks, and Emerging Trends
 
The Blockchain Imperative: The Next Challenge for P&C Carriers
The Blockchain Imperative: The Next Challenge for P&C CarriersThe Blockchain Imperative: The Next Challenge for P&C Carriers
The Blockchain Imperative: The Next Challenge for P&C Carriers
 
Upsc science AND technology
Upsc   science AND technologyUpsc   science AND technology
Upsc science AND technology
 
TGC12 e book
TGC12 e bookTGC12 e book
TGC12 e book
 
Evolution of blockchain protocols & Towards Mass Adoption
Evolution of blockchain protocols & Towards Mass AdoptionEvolution of blockchain protocols & Towards Mass Adoption
Evolution of blockchain protocols & Towards Mass Adoption
 
Blockchains For The IOT - EVRYTHNG
Blockchains For The IOT - EVRYTHNGBlockchains For The IOT - EVRYTHNG
Blockchains For The IOT - EVRYTHNG
 
ACC presentation on tokenization of everything - February-March 2018
ACC presentation on tokenization of everything - February-March 2018ACC presentation on tokenization of everything - February-March 2018
ACC presentation on tokenization of everything - February-March 2018
 
Blockchain for Insurance
Blockchain for InsuranceBlockchain for Insurance
Blockchain for Insurance
 
What are distributed ledgers (actually) good for?
What are distributed ledgers (actually) good for?What are distributed ledgers (actually) good for?
What are distributed ledgers (actually) good for?
 
Blockchain@next18 event
Blockchain@next18 eventBlockchain@next18 event
Blockchain@next18 event
 
VIVA Investment Partners Briefing Number 1 - Digital Securities w/Tal Elyashiv
VIVA Investment Partners Briefing Number 1 - Digital Securities w/Tal ElyashivVIVA Investment Partners Briefing Number 1 - Digital Securities w/Tal Elyashiv
VIVA Investment Partners Briefing Number 1 - Digital Securities w/Tal Elyashiv
 
Openbar 3 - Leuven - The Ledger - Where's the business in Blockchain
Openbar 3 - Leuven - The Ledger - Where's the business in BlockchainOpenbar 3 - Leuven - The Ledger - Where's the business in Blockchain
Openbar 3 - Leuven - The Ledger - Where's the business in Blockchain
 
Blockchain for Enterprise
Blockchain for EnterpriseBlockchain for Enterprise
Blockchain for Enterprise
 
Hyperledger - MMA Impact Forum Brasil 2019
Hyperledger - MMA Impact Forum Brasil 2019Hyperledger - MMA Impact Forum Brasil 2019
Hyperledger - MMA Impact Forum Brasil 2019
 
Blockchain for Digital Transformation in Banking
Blockchain for Digital Transformation in Banking Blockchain for Digital Transformation in Banking
Blockchain for Digital Transformation in Banking
 
Blockchain and drones @ Dronemasters, Berlin
Blockchain and drones @ Dronemasters, BerlinBlockchain and drones @ Dronemasters, Berlin
Blockchain and drones @ Dronemasters, Berlin
 

More from Knight Moves

More from Knight Moves (6)

ARENA - A patient's journey (Knight Moves).pdf
ARENA - A patient's journey (Knight Moves).pdfARENA - A patient's journey (Knight Moves).pdf
ARENA - A patient's journey (Knight Moves).pdf
 
Arena - Designing for trust
Arena - Designing for trust Arena - Designing for trust
Arena - Designing for trust
 
ARENA - Accessibility
ARENA - AccessibilityARENA - Accessibility
ARENA - Accessibility
 
ARENA • The Future of Work
ARENA • The Future of WorkARENA • The Future of Work
ARENA • The Future of Work
 
ARENA - Human-Centred Organisations
ARENA - Human-Centred OrganisationsARENA - Human-Centred Organisations
ARENA - Human-Centred Organisations
 
Sneaking Service Design into large organisations
Sneaking Service Design into large organisationsSneaking Service Design into large organisations
Sneaking Service Design into large organisations
 

Recently uploaded

Russian Escort Abu Dhabi 0503464457 Abu DHabi Escorts
Russian Escort Abu Dhabi 0503464457 Abu DHabi EscortsRussian Escort Abu Dhabi 0503464457 Abu DHabi Escorts
Russian Escort Abu Dhabi 0503464457 Abu DHabi Escorts
Monica Sydney
 
一比一原版田纳西大学毕业证如何办理
一比一原版田纳西大学毕业证如何办理一比一原版田纳西大学毕业证如何办理
一比一原版田纳西大学毕业证如何办理
F
 
Russian Call girls in Abu Dhabi 0508644382 Abu Dhabi Call girls
Russian Call girls in Abu Dhabi 0508644382 Abu Dhabi Call girlsRussian Call girls in Abu Dhabi 0508644382 Abu Dhabi Call girls
Russian Call girls in Abu Dhabi 0508644382 Abu Dhabi Call girls
Monica Sydney
 
哪里办理美国迈阿密大学毕业证(本硕)umiami在读证明存档可查
哪里办理美国迈阿密大学毕业证(本硕)umiami在读证明存档可查哪里办理美国迈阿密大学毕业证(本硕)umiami在读证明存档可查
哪里办理美国迈阿密大学毕业证(本硕)umiami在读证明存档可查
ydyuyu
 
Top profile Call Girls In Dindigul [ 7014168258 ] Call Me For Genuine Models ...
Top profile Call Girls In Dindigul [ 7014168258 ] Call Me For Genuine Models ...Top profile Call Girls In Dindigul [ 7014168258 ] Call Me For Genuine Models ...
Top profile Call Girls In Dindigul [ 7014168258 ] Call Me For Genuine Models ...
gajnagarg
 
pdfcoffee.com_business-ethics-q3m7-pdf-free.pdf
pdfcoffee.com_business-ethics-q3m7-pdf-free.pdfpdfcoffee.com_business-ethics-q3m7-pdf-free.pdf
pdfcoffee.com_business-ethics-q3m7-pdf-free.pdf
JOHNBEBONYAP1
 
一比一原版(Curtin毕业证书)科廷大学毕业证原件一模一样
一比一原版(Curtin毕业证书)科廷大学毕业证原件一模一样一比一原版(Curtin毕业证书)科廷大学毕业证原件一模一样
一比一原版(Curtin毕业证书)科廷大学毕业证原件一模一样
ayvbos
 
一比一原版(Offer)康考迪亚大学毕业证学位证靠谱定制
一比一原版(Offer)康考迪亚大学毕业证学位证靠谱定制一比一原版(Offer)康考迪亚大学毕业证学位证靠谱定制
一比一原版(Offer)康考迪亚大学毕业证学位证靠谱定制
pxcywzqs
 
一比一原版(Flinders毕业证书)弗林德斯大学毕业证原件一模一样
一比一原版(Flinders毕业证书)弗林德斯大学毕业证原件一模一样一比一原版(Flinders毕业证书)弗林德斯大学毕业证原件一模一样
一比一原版(Flinders毕业证书)弗林德斯大学毕业证原件一模一样
ayvbos
 
一比一原版奥兹学院毕业证如何办理
一比一原版奥兹学院毕业证如何办理一比一原版奥兹学院毕业证如何办理
一比一原版奥兹学院毕业证如何办理
F
 

Recently uploaded (20)

20240508 QFM014 Elixir Reading List April 2024.pdf
20240508 QFM014 Elixir Reading List April 2024.pdf20240508 QFM014 Elixir Reading List April 2024.pdf
20240508 QFM014 Elixir Reading List April 2024.pdf
 
Nagercoil Escorts Service Girl ^ 9332606886, WhatsApp Anytime Nagercoil
Nagercoil Escorts Service Girl ^ 9332606886, WhatsApp Anytime NagercoilNagercoil Escorts Service Girl ^ 9332606886, WhatsApp Anytime Nagercoil
Nagercoil Escorts Service Girl ^ 9332606886, WhatsApp Anytime Nagercoil
 
Russian Escort Abu Dhabi 0503464457 Abu DHabi Escorts
Russian Escort Abu Dhabi 0503464457 Abu DHabi EscortsRussian Escort Abu Dhabi 0503464457 Abu DHabi Escorts
Russian Escort Abu Dhabi 0503464457 Abu DHabi Escorts
 
一比一原版田纳西大学毕业证如何办理
一比一原版田纳西大学毕业证如何办理一比一原版田纳西大学毕业证如何办理
一比一原版田纳西大学毕业证如何办理
 
Russian Call girls in Abu Dhabi 0508644382 Abu Dhabi Call girls
Russian Call girls in Abu Dhabi 0508644382 Abu Dhabi Call girlsRussian Call girls in Abu Dhabi 0508644382 Abu Dhabi Call girls
Russian Call girls in Abu Dhabi 0508644382 Abu Dhabi Call girls
 
20240510 QFM016 Irresponsible AI Reading List April 2024.pdf
20240510 QFM016 Irresponsible AI Reading List April 2024.pdf20240510 QFM016 Irresponsible AI Reading List April 2024.pdf
20240510 QFM016 Irresponsible AI Reading List April 2024.pdf
 
哪里办理美国迈阿密大学毕业证(本硕)umiami在读证明存档可查
哪里办理美国迈阿密大学毕业证(本硕)umiami在读证明存档可查哪里办理美国迈阿密大学毕业证(本硕)umiami在读证明存档可查
哪里办理美国迈阿密大学毕业证(本硕)umiami在读证明存档可查
 
Top profile Call Girls In Dindigul [ 7014168258 ] Call Me For Genuine Models ...
Top profile Call Girls In Dindigul [ 7014168258 ] Call Me For Genuine Models ...Top profile Call Girls In Dindigul [ 7014168258 ] Call Me For Genuine Models ...
Top profile Call Girls In Dindigul [ 7014168258 ] Call Me For Genuine Models ...
 
pdfcoffee.com_business-ethics-q3m7-pdf-free.pdf
pdfcoffee.com_business-ethics-q3m7-pdf-free.pdfpdfcoffee.com_business-ethics-q3m7-pdf-free.pdf
pdfcoffee.com_business-ethics-q3m7-pdf-free.pdf
 
Trump Diapers Over Dems t shirts Sweatshirt
Trump Diapers Over Dems t shirts SweatshirtTrump Diapers Over Dems t shirts Sweatshirt
Trump Diapers Over Dems t shirts Sweatshirt
 
APNIC Policy Roundup, presented by Sunny Chendi at the 5th ICANN APAC-TWNIC E...
APNIC Policy Roundup, presented by Sunny Chendi at the 5th ICANN APAC-TWNIC E...APNIC Policy Roundup, presented by Sunny Chendi at the 5th ICANN APAC-TWNIC E...
APNIC Policy Roundup, presented by Sunny Chendi at the 5th ICANN APAC-TWNIC E...
 
Real Men Wear Diapers T Shirts sweatshirt
Real Men Wear Diapers T Shirts sweatshirtReal Men Wear Diapers T Shirts sweatshirt
Real Men Wear Diapers T Shirts sweatshirt
 
Best SEO Services Company in Dallas | Best SEO Agency Dallas
Best SEO Services Company in Dallas | Best SEO Agency DallasBest SEO Services Company in Dallas | Best SEO Agency Dallas
Best SEO Services Company in Dallas | Best SEO Agency Dallas
 
一比一原版(Curtin毕业证书)科廷大学毕业证原件一模一样
一比一原版(Curtin毕业证书)科廷大学毕业证原件一模一样一比一原版(Curtin毕业证书)科廷大学毕业证原件一模一样
一比一原版(Curtin毕业证书)科廷大学毕业证原件一模一样
 
一比一原版(Offer)康考迪亚大学毕业证学位证靠谱定制
一比一原版(Offer)康考迪亚大学毕业证学位证靠谱定制一比一原版(Offer)康考迪亚大学毕业证学位证靠谱定制
一比一原版(Offer)康考迪亚大学毕业证学位证靠谱定制
 
Story Board.pptxrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
Story Board.pptxrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrStory Board.pptxrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
Story Board.pptxrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
 
Tadepalligudem Escorts Service Girl ^ 9332606886, WhatsApp Anytime Tadepallig...
Tadepalligudem Escorts Service Girl ^ 9332606886, WhatsApp Anytime Tadepallig...Tadepalligudem Escorts Service Girl ^ 9332606886, WhatsApp Anytime Tadepallig...
Tadepalligudem Escorts Service Girl ^ 9332606886, WhatsApp Anytime Tadepallig...
 
Mira Road Housewife Call Girls 07506202331, Nalasopara Call Girls
Mira Road Housewife Call Girls 07506202331, Nalasopara Call GirlsMira Road Housewife Call Girls 07506202331, Nalasopara Call Girls
Mira Road Housewife Call Girls 07506202331, Nalasopara Call Girls
 
一比一原版(Flinders毕业证书)弗林德斯大学毕业证原件一模一样
一比一原版(Flinders毕业证书)弗林德斯大学毕业证原件一模一样一比一原版(Flinders毕业证书)弗林德斯大学毕业证原件一模一样
一比一原版(Flinders毕业证书)弗林德斯大学毕业证原件一模一样
 
一比一原版奥兹学院毕业证如何办理
一比一原版奥兹学院毕业证如何办理一比一原版奥兹学院毕业证如何办理
一比一原版奥兹学院毕业证如何办理
 

Blockchain for Business - The Ledger - ARENA