Roberto Capodieci
TECHNOLOGY INFRASTRUCTURE
REQUIREMENTS TO SUPPORT
A (NEW) BLOCKCHAIN
GLOBAL BLOCKCHAIN CONFERENCE 2018
ROBERTO CAPODIECI – BLOCKCHAIN ZOO - 23-24 APRIL 2018

Roberto Capodieci
Topics of this speech:
• What technologies are essential in a blockchain?
• What technologies are essential in a bc wallet
• Interaction flow wallet / blockchain
• What makes a blockchain secure?
• Weaknesses of a new blockchain project
• Protecting a (new) blockchain from DDoS attacks

Roberto Capodieci
What technologies are essential in a
blockchain?
• Peer to peer network
• Cryptography
• Data storage
• Validation rules
(consensus)

Roberto Capodieci
What technologies are essential in a bc wallet?
• Peer to peer network protocol
• Cryptography
• Validation rules for each transaction type
• Secure storage of private keys and signing
process

Roberto Capodieci
Interaction flow wallet / blockchain
HARDWARE WALLET
CLIENT APPLICATION
(WEB, MOBILE, DESKTOP, INTEGRATION, ETC)
I N T E R N E T
MIDDLEWARE | P2P .
NODE API | NETWORK
NODE STORAGE & APPLICATIONS
< SAFETY LAYER
< AIRGAP
< FULL APPLICATION
< OUT: P2P, IN: API
< MIDDLEWARE API
< IN: P2P, OUT: API
< THE CORE PART

Roberto Capodieci
What makes a blockchain secure?
• Solid core protocol
• Large P2P network
• Diversified node management and ownership
• No central points of access
• Diverse core node software implementations

Roberto Capodieci
Weaknesses of a new blockchain project
• Illiteracy of the architect and implementation team
• Many nodes, a single admin
• Many nodes, a single hosting provider
• Many nodes, a single type of deployment
• Many nodes, a single node software application
• Many nodes, a single point of access

Roberto Capodieci
Protecting a (new) blockchain from DDoS attacks
USER 1 USER 2 USER 3 USER 4 USER 5 USER 6
USERS DOWNLOAD WEB APP AND CONNECT TO P2P
DOMAIN NAME (CLOUDFLARE W| LOAD BALANCER)
LOAD BALANCER + DDoS PROTECTION
WEB S1 WEB S2 WEB S3 WEB S4 WEB S5 WEB S6
INTRANET (NODES LOCAL IP TALKS WITH WEB SERVS)
API 01 API 02 API 03 API 04 API 05 API 06 API 07
P2P 01 P2P 02 P2P 03 P2P 04 P2P 05 P2P 06 P2P 07
READ ONLY ON PEER TO PEER NETWORK (PUBLIC IPS)

Roberto Capodieci
Questions & Actions
Roberto Capodieci
+62 822 62226666 (only via Telegram app)
roberto.capodieci@blockchainzoo.com
Consultant on Blockchain, big data, and LI for LEAs