BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//21btc.cc//Bitcoin calendar//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Bitcoin calendar · 21btc.cc
BEGIN:VEVENT
UID:genesis-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20090103
DTEND;VALUE=DATE:20090104
RRULE:FREQ=YEARLY
SUMMARY:₿ Genesis Block Day
DESCRIPTION:Block 0 was mined on 3 Jan 2009.\nhttps://mempool.space/block/0
 00000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
URL:https://21btc.cc/calendar#sx-calendar-h-genesis-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:v01-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20090108
DTEND;VALUE=DATE:20090109
RRULE:FREQ=YEARLY
SUMMARY:₿ Bitcoin v0.1 release day
DESCRIPTION:Satoshi announced the first release on 8 Jan 2009.\nhttps://sat
 oshi.nakamotoinstitute.org/emails/cryptography/16/
URL:https://21btc.cc/calendar#sx-calendar-h-v01-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:etf-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20240110
DTEND;VALUE=DATE:20240111
RRULE:FREQ=YEARLY
SUMMARY:₿ US spot ETF approval day
DESCRIPTION:The SEC approved spot bitcoin ETPs on 10 Jan 2024.\nhttps://www
 .sec.gov/news/statement/gensler-statement-spot-bitcoin-011023
URL:https://21btc.cc/calendar#sx-calendar-h-etf-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:first-tx-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20090112
DTEND;VALUE=DATE:20090113
RRULE:FREQ=YEARLY
SUMMARY:₿ First transaction day
DESCRIPTION:Satoshi sent 10 BTC to Hal Finney on 12 Jan 2009.\nhttps://memp
 ool.space/tx/f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9
 e16
URL:https://21btc.cc/calendar#sx-calendar-h-first-tx-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:sbr-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20250306
DTEND;VALUE=DATE:20250307
RRULE:FREQ=YEARLY
SUMMARY:₿ US Strategic Bitcoin Reserve day
DESCRIPTION:The executive order was signed on 6 Mar 2025.\nhttps://www.whit
 ehouse.gov/fact-sheets/2025/03/fact-sheet-president-donald-j-trump-establi
 shes-the-strategic-bitcoin-reserve-and-u-s-digital-asset-stockpile/
URL:https://21btc.cc/calendar#sx-calendar-h-sbr-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:satoshi-bday@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:19750405
DTEND;VALUE=DATE:19750406
RRULE:FREQ=YEARLY
SUMMARY:₿ Satoshi's stated birthday
DESCRIPTION:Satoshi's P2P Foundation profile gave 5 April 1975 as his date 
 of birth.\nhttps://en.wikipedia.org/wiki/Satoshi_Nakamoto
URL:https://21btc.cc/calendar#sx-calendar-h-satoshi-bday
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:pizza-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20100522
DTEND;VALUE=DATE:20100523
RRULE:FREQ=YEARLY
SUMMARY:₿ Bitcoin Pizza Day
DESCRIPTION:10\,000 BTC for two pizzas on 22 May 2010.\nhttps://bitcointalk
 .org/index.php?topic=137.0
URL:https://21btc.cc/calendar#sx-calendar-h-pizza-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:domain-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20080818
DTEND;VALUE=DATE:20080819
RRULE:FREQ=YEARLY
SUMMARY:₿ bitcoin.org birthday
DESCRIPTION:The domain was registered on 18 Aug 2008.\nhttps://en.wikipedia
 .org/wiki/History_of_bitcoin
URL:https://21btc.cc/calendar#sx-calendar-h-domain-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:segwit-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20170824
DTEND;VALUE=DATE:20170825
RRULE:FREQ=YEARLY
SUMMARY:₿ SegWit activation day
DESCRIPTION:SegWit activated at block 481\,824 on 24 Aug 2017.\nhttps://mem
 pool.space/block/0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a19021
 67f9893
URL:https://21btc.cc/calendar#sx-calendar-h-segwit-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:el-salvador-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20210907
DTEND;VALUE=DATE:20210908
RRULE:FREQ=YEARLY
SUMMARY:₿ Bitcoin legal tender day (El Salvador)
DESCRIPTION:El Salvador's Bitcoin Law took effect on 7 Sep 2021.\nhttps://e
 n.wikipedia.org/wiki/Bitcoin_in_El_Salvador
URL:https://21btc.cc/calendar#sx-calendar-h-el-salvador-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:whitepaper-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20081031
DTEND;VALUE=DATE:20081101
RRULE:FREQ=YEARLY
SUMMARY:₿ Whitepaper Day
DESCRIPTION:The whitepaper was published on 31 Oct 2008.\nhttps://satoshi.n
 akamotoinstitute.org/emails/cryptography/1/
URL:https://21btc.cc/calendar#sx-calendar-h-whitepaper-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:taproot-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20211114
DTEND;VALUE=DATE:20211115
RRULE:FREQ=YEARLY
SUMMARY:₿ Taproot activation day
DESCRIPTION:Taproot activated at block 709\,632 on 14 Nov 2021.\nhttps://me
 mpool.space/block/0000000000000000000687bca986194dc2c1f949318629b44bb54ec0
 a94d8244
URL:https://21btc.cc/calendar#sx-calendar-h-taproot-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:halving-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20121128
DTEND;VALUE=DATE:20121129
RRULE:FREQ=YEARLY
SUMMARY:₿ First halving anniversary
DESCRIPTION:Block 210\,000 halved the reward on 28 Nov 2012.\nhttps://mempo
 ol.space/block/000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba17
 1342e
URL:https://21btc.cc/calendar#sx-calendar-h-halving-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:satoshi-last-day@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20101212
DTEND;VALUE=DATE:20101213
RRULE:FREQ=YEARLY
SUMMARY:₿ Satoshi's last forum post
DESCRIPTION:Satoshi's last BitcoinTalk post is dated 12 Dec 2010.\nhttps://
 satoshi.nakamotoinstitute.org/posts/bitcointalk/543/
URL:https://21btc.cc/calendar#sx-calendar-h-satoshi-last-day
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:tabconf-8@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261012
DTEND;VALUE=DATE:20261016
SUMMARY:TABConf 8
LOCATION:Atlanta\, USA
DESCRIPTION:Technical Bitcoin conference for builders and developers.\nhttp
 s://8.tabconf.com/
URL:https://8.tabconf.com/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:planb-week-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261019
DTEND;VALUE=DATE:20261029
SUMMARY:Plan ₿ Week
LOCATION:Lugano\, Switzerland
DESCRIPTION:Ten days of Bitcoin around the forum: startups\, builders\, edu
 cation workshops and social events.\nhttps://planb.lugano.ch/planb-forum/
URL:https://planb.lugano.ch/planb-forum/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:planb-capital-markets-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART:20261022T070000Z
DTEND:20261022T173000Z
SUMMARY:The Future of Capital Markets
LOCATION:Piazza Bernardino Luini 6\, Lugano\, Switzerland
DESCRIPTION:Plan ₿ satellite event: regulators\, issuers and investors on
  Bitcoin\, tokenisation and capital formation.\nhttps://planb.lugano.ch/pl
 anb-forum/
URL:https://planb.lugano.ch/planb-forum/
TRANSP:OPAQUE
END:VEVENT
BEGIN:VEVENT
UID:planb-preregistration-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART:20261022T130000Z
DTEND:20261022T170000Z
SUMMARY:Plan ₿ Forum: pre-registration
LOCATION:Convention Center\, Piazza Indipendenza 4\, Lugano\, Switzerland
DESCRIPTION:Collect your badge early: show the QR pass from the ticket emai
 l. Regular registration opens 23 Oct at 08:00.\nhttps://planb.lugano.ch/pl
 anb-forum/agenda/
URL:https://planb.lugano.ch/planb-forum/agenda/
TRANSP:OPAQUE
END:VEVENT
BEGIN:VEVENT
UID:planb-lugano-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261023
DTEND;VALUE=DATE:20261025
SUMMARY:Plan ₿ Forum Lugano 2026
LOCATION:Palazzo dei Congressi (Convention Center)\, Piazza Indipendenza 4\
 , Lugano\, Switzerland
DESCRIPTION:Two days\, 4 stages\, 119 speakers. Pre-registration 22 Oct 15:
 00–19:00\, registration 23 Oct from 08:00 (Convention Center\, Piazza In
 dipendenza 4).\nhttps://planb.lugano.ch/planb-forum/
URL:https://planb.lugano.ch/planb-forum/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:run-for-hal-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART:20261023T050000Z
DTEND:20261023T060000Z
SUMMARY:Run For Hal 5K
LOCATION:Villa Ciani Gate\, Lugano\, Switzerland
DESCRIPTION:Free 5K run along Lake Lugano for all abilities\, supporting th
 e Hal Finney ALS Research Fund.\nhttps://planb.lugano.ch/planb-forum/
URL:https://planb.lugano.ch/planb-forum/
TRANSP:OPAQUE
END:VEVENT
BEGIN:VEVENT
UID:cypher-tank-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART:20261026T080000Z
DTEND:20261026T170000Z
RRULE:FREQ=DAILY;UNTIL=20261027T235959Z
SUMMARY:Cypher Tank
LOCATION:Lugano\, Switzerland
DESCRIPTION:Bitcoin startup pitch competition: five finalists\, live 9:00
 –18:00\, paid entry (per @LuganoPlanB).\nhttps://x.com/LuganoPlanB/statu
 s/2107123661685817692
URL:https://x.com/LuganoPlanB/status/2107123661685817692
TRANSP:OPAQUE
END:VEVENT
BEGIN:VEVENT
UID:bitcoin-amsterdam-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261105
DTEND;VALUE=DATE:20261107
SUMMARY:Bitcoin Amsterdam
LOCATION:Amsterdam\, Netherlands
DESCRIPTION:Europe's large Bitcoin-only conference.\nhttps://www.bitcoin.am
 sterdam/
URL:https://www.bitcoin.amsterdam/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:btcpp-seoul-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261105
DTEND;VALUE=DATE:20261107
SUMMARY:bitcoin++ Seoul
LOCATION:Seoul\, South Korea
DESCRIPTION:Developer-focused bitcoin++ series.\nhttps://btcpp.dev/seoul
URL:https://btcpp.dev/seoul
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:bitcoin-korea-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261107
DTEND;VALUE=DATE:20261109
SUMMARY:Bitcoin Korea Conference
LOCATION:Seoul\, South Korea
DESCRIPTION:Bitcoin-only conference in Korea.\nhttps://www.bitcoinkoreaconf
 erence.com/en
URL:https://www.bitcoinkoreaconference.com/en
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:bitcoin-historico-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261111
DTEND;VALUE=DATE:20261113
SUMMARY:Bitcoin Histórico
LOCATION:San Salvador\, El Salvador
DESCRIPTION:Bitcoin event in El Salvador's capital.\nhttps://bitcoinhistori
 co.com/
URL:https://bitcoinhistorico.com/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:bitcoin-thailand-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261128
DTEND;VALUE=DATE:20261130
SUMMARY:Bitcoin Thailand
LOCATION:Bangkok\, Thailand
DESCRIPTION:Bitcoin conference in Southeast Asia.\nhttps://bitcointhailand.
 co/
URL:https://bitcointhailand.co/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:africa-bitcoin-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261202
DTEND;VALUE=DATE:20261206
SUMMARY:Africa Bitcoin Conference
LOCATION:Blantyre\, Malawi
DESCRIPTION:Africa's main Bitcoin gathering.\nhttps://afrobitcoin.org/
URL:https://afrobitcoin.org/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:bitcoin-mena-2026@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20261207
DTEND;VALUE=DATE:20261209
SUMMARY:Bitcoin MENA
LOCATION:Abu Dhabi\, UAE
DESCRIPTION:Middle East edition of the Bitcoin conference series. Dates per
  ticket page.\nhttps://tickets.b.tc/event/bitcoin-mena-2026
URL:https://tickets.b.tc/event/bitcoin-mena-2026
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:planb-sv-2027@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20270129
DTEND;VALUE=DATE:20270131
SUMMARY:Plan ₿ Forum El Salvador
LOCATION:San Salvador\, El Salvador
DESCRIPTION:Plan ₿ Forum in El Salvador.\nhttps://planb.sv/
URL:https://planb.sv/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:btc-prague-2027@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20270506
DTEND;VALUE=DATE:20270509
SUMMARY:BTC Prague
LOCATION:Prague\, Czechia
DESCRIPTION:One of Europe's biggest Bitcoin-only events.\nhttps://btcprague
 .com/
URL:https://btcprague.com/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:oslo-freedom-forum-2027@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20270531
DTEND;VALUE=DATE:20270603
SUMMARY:Oslo Freedom Forum
LOCATION:Oslo\, Norway
DESCRIPTION:Human rights forum with a strong Bitcoin track.\nhttps://oslofr
 eedomforum.com/
URL:https://oslofreedomforum.com/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:bitcoin-2027@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20270715
DTEND;VALUE=DATE:20270718
SUMMARY:Bitcoin 2027
LOCATION:Nashville\, USA
DESCRIPTION:The largest annual Bitcoin conference.\nhttps://conference.b.tc
 /
URL:https://conference.b.tc/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:bitcoin-asia-2027@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20270826
DTEND;VALUE=DATE:20270828
SUMMARY:Bitcoin Asia
LOCATION:Hong Kong\, Hong Kong
DESCRIPTION:Asian edition of the Bitcoin conference series.\nhttps://asia.b
 .tc/
URL:https://asia.b.tc/
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:halving-1050000@21btc.cc
DTSTAMP:20261010T063841Z
DTSTART;VALUE=DATE:20280324
DTEND;VALUE=DATE:20280325
SUMMARY:₿ Halving #5 (block 1050000)\, estimate
DESCRIPTION:Estimated from height 970736 and 9.7-min average block time at 
 20261010T063841Z. Reward 3.125 → 1.5625 BTC. The date can shift.
URL:https://21btc.cc/calendar#sx-calendar-halving
TRANSP:TRANSPARENT
END:VEVENT
END:VCALENDAR