This January 2018 Cannabis Science Inc. plans pre-launch sales of its own proprietary blockchain and will commence ICO trading with a unique three symbol trading symbol on a number of blockchain currency exchange markets after pre-launch sales have completed with similar Bitcoin type ICO trading to follow. The Cannabis Science blockchain white papers are being finalized now for January 2018 release. 

From Wikipedia:

Initial coin offering (ICO) is a controversial means of crowdfunding via use of cryptocurrency,[1][2] which can be a source of capital for startup companies.[3] In an ICO, a percentage of the newly issued cryptocurrency is sold to investors in exchange for legal tender or other cryptocurrencies such as Bitcoin or Ethereum.

Early token sales were held by Mastercoin in July 2013 and Ethereum and Karmacoin in 2014, but "mainstream" ICOs began with messaging app developer Kik in September 2017. By November 2017 there were around 50 offerings a month.

ICOs may fall outside existing regulations or may need to be regulated[4][5] depending on the nature of the project, or banned altogether in some jurisdictions, such as China and South Korea. [6][7]

A blockchain,[1][2][3] originally block chain,[4][5] is a continuously growing list of records, called blocks, which are linked and secured using cryptography.[1][6] Each block typically contains a hash pointer as a link to a previous block,[6] a timestamp and transaction data.[7] By design, blockchains are inherently resistant to modification of the data. The Harvard Business Review describes it as "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way."[8] For use as a distributed ledger, a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks, which requires collusion of the network majority.

Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain.[9] This makes blockchains potentially suitable for the recording of events, medical records,[10][11] and other records management activities, such as identity management,[12][13][14] transaction processing, documenting provenance, food traceability[15] or voting.[16]

The first blockchain was conceptualized in 2008 by an anonymous person or group known as Satoshi Nakamoto and implemented in 2009 as a core component of bitcoin where it serves as the public ledger for all transactions.[1] The invention of the blockchain for bitcoin made it the first digital currency to solve the double spending problem without the need of a trusted authority or central server. The bitcoin design has been the inspiration for other applications.[1][3]

About Cannabis Science, Inc. 

Cannabis Science, Inc. takes advantage of its unique understanding of metabolic processes to provide novel treatment approaches to a number of illnesses for which current treatments and understanding remain unsatisfactory. Cannabinoids have an extensive history dating back thousands of years, and currently, there are a growing number of peer-reviewed scientific publications that document the underlying biochemical pathways that cannabinoids modulate. The Company works with leading experts in drug development, medicinal characterization, and clinical research to develop, produce, and commercialize novel therapeutic approaches for the treatment for illnesses caused by infections as well as for age-related illness. Our initial focus is on cancers, HIV/AIDS, and neurological conditions. The Company is proceeding with the research and development of its proprietary drugs as a part of this initial focus: CS-S/BCC-1, CS-TATI-1, and CS-NEURO-1, respectively.

Forward-Looking Statements

This Press Release includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Act of 1934. A statement containing words such as "anticipate," "seek," intend," "believe," "estimate," "expect," "project," "plan," or similar phrases may be deemed "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Some or all of the events or results anticipated by these forward-looking statements may not occur. Factors that could cause or contribute to such differences include the future U.S. and global economies, the impact of competition, and the Company's reliance on existing regulations regarding the use and development of cannabis-based drugs. Cannabis Science, Inc., does not undertake any duty nor does it intend to update the results of these forward-looking statements. Safe Harbor Statement. The Private Securities Litigation Reform Act of 1995 provides a 'safe harbor' for forward looking statements. Certain of the statements contained herein, which are not historical facts are forward looking statements with respect to events, the occurrence of which involved risks and uncertainties. These forward-looking statements may be impacted, either positively or negatively, by various factors. Information concerning potential factors that could affect the company is detailed from time to time in the company's reports filed with the Securities and Exchange Commission.