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ibm blockchain
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2017-11-14
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ibm在blockchain上的观念和视角,以及预期的blockchain在各个行业的应用
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Blockchain: The Chain of Trust and its Potential to Transform Healthcare – Our Point of View
This white paper is intended to assist the Government with market research/health related research only. It is not intended as a commitment that IBM will further
develop blockchain technology, nor that blockchain technology will address specific health related requirements. IBM is the sole author, creator, and owner of
the submission, or has the right to use the information herein. The submission, to the best of IBM’s knowledge, does not and will not violate or infringe upon the
intellectual property rights, privacy rights, publicity rights, or other legal rights of any third party.
Blockchain: The Chain of Trust and its Potential
to Transform Healthcare – Our Point of View
“Use of Blockchain in Health IT and Health-related
Research” Ideation Challenge
Office of the National Coordinator for Health
Information Technology
IBM Global Business Services Public Sector Team
6710 Rockledge Dr., Bethesda, MD 20817
August 8, 2016

Blockchain: The Chain of Trust and its Potential to Transform Healthcare – Our Point of View
Executive Summary
As it has for centuries, commerce relies on two things: trust and verified identity. Put more simply:
What is being exchanged, and who is confirming it? Yet commerce that was once direct and in-person
is today conducted mostly online and requires intermediaries such as banks, governments, or other
central authorities to verify the identity of each party and establish the needed trust between them.
And whenever there are intermediaries there are inefficiencies – decreased speed, increased cost,
and sometimes even fraud. Privacy, too, can be affected, and the centralized information stores of the
intermediaries can be vulnerable to attacks. The famous 1993 cartoon by Peter Stein in The New Yorker
sums up the trust limitation that is inherent in online commerce: “On the Internet, nobody knows you’re
a dog.” Twenty-three years later, the world is still working to overcome this limitation with a commerce-
ready method of validating identity and establishing trust without validation by an intermediary.
Welcome to blockchain, often called the chain of trust. Blockchain technology can support a new
generation of transactional applications and streamlined business processes by establishing the trust,
accountability, and transparency that are essential to modern commerce. The Internet of Information has
been built on protocols such as TCP/IP for machine communication, HTTP for web content, SMTP for
email, and FTP for file transfer. Blockchain facilitates trust and validates identity without intermediate third
parties, enabling an Internet of Value. What TCP/IP has been for the exchange of information, blockchain
can be for the exchange of value. The Economist stated it well, calling blockchain “the trust machine”
and “the great chain of being sure about things”.
As the technology behind the bitcoin
digital currency, blockchain’s birth is
traced to the pseudonymous, unidentified
person (or group) known as Satoshi
Nakamoto. In recent years blockchain
has gained more widespread use in
other realms, with a variety of new
blockchain-enabled businesses and
services entering the market – many with
potential to upend established industries.
Blockchain technologies can be used to
share a ledger of transactions across a
business network without control by any
single entity. The distributed ledger makes it easier to create cost-efficient commercial relationships
where virtually anything of value can be tracked and traded without requiring a central point of control.
Blockchain promises to put privacy and control of data back in the hands of citizens. Trust and integrity
will be established without reliance on third-party intermediaries. IBM believes blockchain is an
extraordinarily important phenomenon with the potential to transform industries and upend business
models. In this paper, we discuss the challenges in the healthcare system and how blockchain can
potentially solve them.
“Over the past two decades, the Internet has
revolutionized many aspects of business and
society... Yet the basic mechanics of how people
and organizations execute transactions… have
not been updated for the 21st century. Blockchain
could bring to those processes the openness and
efficiency we have come to expect
in the Internet Era.”
—Arvind Krishna
Senior VP, IBM Research
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Blockchain: The Chain of Trust and its Potential to Transform Healthcare – Our Point of View
Healthcare Challenges and How Blockchain Can Solve Them
The healthcare ecosystem is complex, with multiple stakeholders and intricate, sensitive interactions.
This leads to both data security and privacy challenges and operational inefficiencies. Ownership and
trusted access to medical information and administrative data is critical, yet the process must be made
simpler and less costly.
In healthcare, new research is seeking to apply blockchain’s distributed ledger and decentralized
database solutions to the critical issues of interoperability, security, record universality, and more.
Intriguing uses in other industries are being extended to healthcare, such as extending blockchain’s
smart contracts to provider network management or connecting myriad medical devices through
common, blockchain-enabled systems of information relationships. While technical consensus on a
distributed ledger for healthcare has yet to emerge, with debate ongoing regarding scalability, security,
and regulatory compliance, blockchain technology and encryption will drive innovation in healthcare
services and administration.
With blockchain, a business network allows members to exchange items of value through a distributed
ledger that each member possesses and whose content is always in sync. Its cost-efficiency and
accountability is driven by these key supporting concepts:
- Bit-string cryptography that ensures the integrity of ledger content without violating HIPAA
requirements, which have traditionally limited the utility of health data and delayed its use
in real time
[16]
- Consensus in which the majority of chain nodes confirm transaction validity
- Smart contracts that authorize and notarize each transaction
Table 1 lists today’s most prominent healthcare industry pain points and IBM’s views on blockchain’s
potential impact on them.
Pain Points Current Challenges Blockchain’s Impact
Interoperability,
accessibility,
and data integrity
- Providers-payers not
accountable for interoperability
under Health Information
Technology for Economic and
Clinical Health (HITECH) Act
[8]
- Data silos and data complexity
limiting interoperability and data
sharing
- Lack of clear data ownership
- Inadequate analytic capabilities
to support PCOR, precision
medicine, and other national
healthcare delivery priorities
- Blockchain eliminates data silos and aggregates
clinical data from EMRs (whether the Department
of Defense, Veteran’s Administration, or private
vendors) driving seamless interoperability between
healthcare systems.
- Records are guaranteed to be cryptographically
secure, with no possibility of bad actors threatening
data integrity.
[10]
- Outside auditing is made easier.
[5]
- Outcomes research and precision medicine
initiatives can be better supported; patients can
control what data is shared with whom, achieving
improved interoperability and increased anonymous
data samples.
Table 1: Healthcare pain points and potential blockchain solutions
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