File:Root of Merkle tree as published in Widely Witnessed Media.png

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Root_of_Merkle_tree_as_published_in_Widely_Witnessed_Media.png(474 × 210 pixels, file size: 155 KB, MIME type: image/png)

Summary[edit]

Media data and Non-free use rationale
Description Image illustrates widely witnessed publishing concept in context of linking-based time-stamping. Upper-left corner of front page of the Markets section, Financial Times, July 17 2009
Author or
copyright owner
Guardtime / Financial Times
Source (WP:NFCC#4) Scanned by myself
Use in article (WP:NFCC#7) Linked timestamping
Purpose of use in article (WP:NFCC#8) The concept of using widely witnessed media to make the published root hash value immutable.
Not replaceable with
free media because
(WP:NFCC#1)
n.a.
Not replaceable with
textual coverage because
(WP:NFCC#1)
One picture is worth thousand words.
Minimal use (WP:NFCC#3) Old newspaper, lowest legible resolution, cropped.
Respect for
commercial opportunities
(WP:NFCC#2)
n.a.
Fair useFair use of copyrighted material in the context of Linked timestamping//en.wikipedia.org/wiki/File:Root_of_Merkle_tree_as_published_in_Widely_Witnessed_Media.pngtrue

Licensing[edit]

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current00:15, 8 October 2017Thumbnail for version as of 00:15, 8 October 2017474 × 210 (155 KB)DatBot (talk | contribs)Reduce size of non-free image (BOT - disable)
07:11, 30 April 2013No thumbnail627 × 279 (274 KB)RistoLaanoja (talk | contribs)Pink background did not give much context. Include the publishing date.
11:54, 25 April 2013No thumbnail321 × 184 (77 KB)RistoLaanoja (talk | contribs)Uploading an excerpt from a non-free work using File Upload Wizard
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