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1 200 OK Date: Thu, 02 Jul 2026 16:54:21 GMT Content-Type: text/html; charset=utf-8 Vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Sec-Fetch-Site,Accept-Encoding, Accept, X-Requested-With ETag: W/"26dfd90bfcac5e8fd65691a38e8d86b0" Cache-Control: max-age=0, private, must-revalidate Strict
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A user's client provides presence information (presence state) via a network connection to a presence service , which is stored in what constitutes their personal availability record (called a presentity ) and can be made available for distribution to other users (called watchers ) to convey their availability for
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1 200 OK date: Fri, 03 Jul 2026 06:26:03 GMT server: mw-web
1 200 OK date: Fri, 03 Jul 2026 00:09:41 GMT server: mw-web
1 200 OK Date: Thu, 02 Jul 2026 19:47:09 GMT Content-Type: text/html; charset=utf-8 Vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Sec-Fetch-Site,Accept-Encoding, Accept, X-Requested-With ETag: W/"4ad4d37c9015c110ecc0e7ddb593aeec" Cache-Control: max-age=0, private, must-revalidate Strict
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(Top)
1 History
2 Terminology
Toggle Terminology subsection
2.1 Altcoins
2.1.1 Stablecoins
2.1.2 Memecoins
3 Physical crypto
4 Architecture
Toggle Architecture subsection
4.1 Blockchain
4.2 Nodes
4.2.1 Timestamping
4.3 Mining
4
1 200 OK date: Thu, 02 Jul 2026 13:02:28 GMT server: mw-web
1 200 OK date: Thu, 02 Jul 2026 10:51:19 GMT server: mw-web
1 200 OK Date: Thu, 02 Jul 2026 17:06:44 GMT Content-Type: text/html; charset=utf-8 Vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Sec-Fetch-Site,Accept-Encoding, Accept, X-Requested-With ETag: W/"47aa9c1d17c88f3a190a8326a978c3c3" Cache-Control: max-age=0, private, must-revalidate Strict
com
kagi2pv5bdcxxqla5itjzje2cgdccuwept5ub6patvmvn3qgmgjd6vid
1 200 OK date: Fri, 03 Jul 2026 06:24:50 GMT server: mw-web
History [ edit ] The standard was proposed by Martijn Koster , [ 1 ] [ 2 ] when working for Nexor [ 3 ] in February 1994 [ 4 ] on the www-talk mailing list, the main communication channel for WWW-related activities at the time
1 200 OK date: Thu, 02 Jul 2026 00:42:46 GMT server: ATS/9
com | Subject:demo=20run|Date:July=205,=202005=203:44:08=20PM=20-0700; bh=MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI=; b=dzdVyOfAKCdLXdJOc9G2q8LoXSlEniSbav+yuU4zGeeruD00lszZ VoG4ZHRNiYzR where the tags used are: v (required), version a (required), signing algorithm d (required), Signing Domain Identifier (SDID) s
1 200 OK date: Thu, 02 Jul 2026 15:19:07 GMT server: mw-web
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[ 7 ] Initial WWW project (1989–1991) [ edit ] In March 1989, Sir Tim Berners-Lee proposed a new project to his employer CERN , with the goal of easing the exchange of information between scientists by using a hypertext system
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(Top)
1 Representation
Toggle Representation subsection
1.1 Choice of scaling factors
1.2 Exact values
1.3 Comparison with floating-point
2 Applications
3 Operations
Toggle Operations subsection
3.1 Addition and subtraction
3.2
1 200 OK date: Thu, 02 Jul 2026 03:01:32 GMT server: ATS/9
org /pub /png (home site) Portable Network Graphics ( PNG , officially pronounced / p ɪ ŋ / PING , [ 3 ] [ 4 ] colloquially pronounced / ˌ p iː ɛ n ˈ dʒ iː / PEE -en- JEE [ 5 ] ) is a raster-graphics file format that supports lossless data compression
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YouTube Show dark mode version of logo Show light mode version of logo Logo used since October 22, 2024 YouTube search results, May 2025 Type of business Subsidiary Type of site Online video platform , social media platform Founded February 14, 2005 ; 21 years ago  ( 2005-02-14 ) Headquarters 901
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