REAL CLASSROOM VIDEO — SOURCE AND LICENSE

Original: Session 1: Introduction, 15.S12 Blockchain and Money, Fall 2018.
Instructor: Gary Gensler. Publisher and copyright holder: Massachusetts Institute of Technology / MIT OpenCourseWare.
Source: https://ocw.mit.edu/courses/15-s12-blockchain-and-money-fall-2018/resources/session-1-introduction/
Official download: https://archive.org/download/MIT15.S12F18/MIT15_S12F18_lec01_300k.mp4
Original timed captions: https://ocw.mit.edu/courses/15-s12-blockchain-and-money-fall-2018/20bc3a67ada855098f6514ce837a6b0f_EH6vE97qIP4.vtt
License: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International.
https://creativecommons.org/licenses/by-nc-sa/4.0/

Changes: selected source excerpts (15:48.570–15:59.700, 17:13.859–17:56.490 and 18:30.330–18:49.920); concatenated as three educational chapters; added independent currency graphics, titles, source notices, original English captions and a Chinese translation. No alteration to the instructor's face, voice, performance or original spoken meaning.

The resulting adapted video and associated subtitle files are distributed under CC BY-NC-SA 4.0. They are for noncommercial educational use. They may not be used as commercial promotion under this license. The instructor and MIT do not endorse or sponsor AUREON LAB. The material was recorded in 2018 and is presented as a historical foundational lecture, not as current market analysis.

Further change: the four independent currency illustrations now use continuous leftward 3D Y-axis rotation. The original lecture audio and performance remain unchanged.