BitcoinCalendar
Bitcoin Calendar

Historical Bitcoin and freedom tech events delivered at your digital doorstep. Daily.

Public Key

npub1tcalvjvswjh5rwhr3gywmfjzghthexjpddzvlxre9wxfqz4euqys0309hn

NIP-05 Address

Profile Code

nprofile1qqs9uwlkfxg8ft6pht3c5z8d5epyt4munfqkk3x0npujhrysp2u7qzgpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsue3f7a

Publishing to

nostr.mom

nos.lol

relay.damus.io

Author Public Key

npub1tcalvjvswjh5rwhr3gywmfjzghthexjpddzvlxre9wxfqz4euqys0309hn

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Last Notes

2025-12-23 08:00:02 UTC

🖨️ Federal Reserve Act
The "Federal Reserve Act" of December 23, 1913, established the Federal Reserve System and granted it the authority to issue Federal Reserve System banknotes (later converted into US dollars) and Federal Reserve Bank notes, used as legal tender in the United States.
This act essentially became the foundation for the greatest deception in history.
https://bitcoin-calendar.org/en/events/1913-12-23/federal-reserve-act

2025-11-15 09:00:07 UTC

💬 Finney on Chaum's work
On November 15, 1992, Hal Finney shared his thoughts on David Chaum's work.
https://haven.bitcoin-calendar.org/49d98bd1c624b95c9d7ac6c04747c6002b5a510bb23320f8a8ada21a3ce719fa.webp
https://bitcoin-calendar.org/en/events/1992-11-15/finney-on-chaums-work

2025-09-27 11:40:39 UTC

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Your screenshot is taken out of context (and yet you can see the messages themselves are not the main point of Satohi's post here).
This reply is in regards to another bitcoin talk user's suggestion to use encryption built into Bitcoin to enable short messages attached to transactions. He compares these to payment titles in traditional finance.
Satoshi's reply displays his concerns in regards to privacy – see the part of the message you specifically highlight: "...permanently recorded PLAINTEXT messages..."
For more context on this topic see another Satoshi's comment – attaching a screenshot.
https://i.nostr.build/DHbi7mCmGmKPPiCm.png
Link to full thread: https://bitcointalk.org/index.php?topic=1545
Link to Satoshi's comment on ECDSA encryption inability: https://bitcointalk.org/index.php?topic=30.msg1169#msg1169

2025-09-12 14:22:40 UTC

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If that happens, I’ll add this quote to https://bitcoin-calendar.org/en
Unless I go down first, of course.

2025-08-05 08:00:01 UTC

🔮 Milton Friedman Predicts E-cash
In August of 1999, Nobel laureate Milton Friedman predicted the emergence of e-cash – a currency untraceable from external sources.
Although #Bitcoin is not an anonymous network, there are many ways to achieve a decent level of privacy. You can find more info on #privacy in a dedicated section of 21ideas.org website.
https://haven.bitcoin-calendar.org/2ecce308a8227c9b353fb5cec4a34887a8c0e33196d70e8332f91b218b177784.mp4

2025-07-30 08:00:02 UTC

🪦 Tribute to Len Sassaman
On July 30, 2011, Dan Kaminsky and Travis Goodspeed cleverly added an ASCII portrait and a short text into a #Bitcoin transaction in honor of Len Sassaman, who committed suicide on July 3 of the same year, two months after Satoshi sent his last public message.
The hackers published the transaction to many specially created addresses that contained text data instead of public key hashes. Therefore, each line contains exactly 20 characters.
The close proximity of Satoshi's departure and Len's suicide, and the fact that the latter was a brilliant developer involved in the creation of TCP/IP, working on #PGP, and many other projects, lead many to believe that he was the person behind the mysterious pseudonym Satoshi Nakamoto.
https://haven.bitcoin-calendar.org/4f231649a6e6646a18b156c377bbc8a022999e77ce107d656e0a6dc058678e91.webp
https://archive.bitcoin-calendar.org/archive/1748756049.874818/index.html#content.html
https://archive.bitcoin-calendar.org/archive/1748756125.562482/index.html
https://archive.bitcoin-calendar.org/archive/1748756206.638479/index.html#singlefile.html

2025-07-20 23:09:24 UTC

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Any chance you have the link to the paper or a pdf?
I’d love to add it to the archive.
https://archive.bitcoin-calendar.org/

2025-06-04 16:00:33 UTC

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No, “After completing his revenge and destroying 13 buildings, the man committed suicide and became the sole fatality of the event.”

2025-06-04 15:30:06 UTC

🚜 Killdozer Day
On June 4, 2004, Marvin Heemeyer armored his bulldozer and went on a rampage, destroying the property of local authorities and oligarchs in retaliation for property unlawfully taken from him – he fought to save his business in court but could not defeat the officials by their rules.
Police fired over 200 bullets at the bulldozer but could not stop Marvin. After completing his revenge and destroying 13 buildings, the man committed suicide and became the sole fatality of the event. A victim of state tyranny.
https://haven.bitcoin-calendar.org/b05e6f4952e8d328c657f8915c0da7b56ed489fd540fcbbc6bd56336fbe2fa54.webp

2025-06-02 13:31:22 UTC

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Is this a yearly set thing or the dates float? I’d add it to my historical Bitcoin events database.

2025-05-26 15:00:03 UTC

📈 First Bitcoin Chart
The first known Bitcoin chart. May 2010. 1 BTC = $0.03. https://i.nostr.build/HM7VA2wOaVRAvA1c.png

2025-05-09 15:30:06 UTC

🚰 FBI Bitcoin Report Leaked
On May 9, 2012, an FBI report titled "Bitcoin Virtual Currency: Unique Features Present Distinct Challenges for Deterring Illicit Activity" got leaked.
The report was originally published on April 24, 2012, intending to highlight concerns that #Bitcoin and similar payment systems could facilitate illegal arms and drug deals. https://i.nostr.build/yo1lECzf9Xbt8X0C.png http://web.archive.org/web/20120611015403/https://www.wired.com/images_blogs/threatlevel/2012/05/Bitcoin-FBI.pdf

2023-06-27 18:11:44 UTC

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BitMeet test post
https://satellite.earth/n/BitMeet/npub10awzknjg5r5lajnr53438ndcyjylgqsrnrtq5grs495v42qc6awsj45ys7/submit
Test post at BitMeet Nostr Community with satellite.earth. A curated community to share upcoming Bitcoin & Nostr meetups, events and conferences.

2023-06-21 16:21:35 UTC

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It's back! Sorry - got carried away by so much stuff. Now that I'm concentrated on @npub10ee…6zka it is obvious that the calendar will be a nice parallel project to accompany a news resource. Got a major enhancement plan for bitcal too. Stay tuned and I promise to stay on top of things this time.

2023-04-05 15:52:30 UTC

04-05-1933 -- Executive Order 6102
Executive Order 6102 was signed by US President Franklin D. Roosevelt "forbidding the hoarding of gold within the continental United States."
Interestingly, April 5th was the date Satoshi chose as his birthday when he registered with the P2P Foundation. Satoshi chose 1975 as his year of birth as this was the year when the order was reversed and US citizens were allowed to hold gold again.
en.wikipedia.org/wiki/Executive_Order_6102
upload.wikimedia.org/wikipedia/commons/a/a1/Executive_Order_6102.jpg

2023-04-04 18:54:24 UTC

Thanks to #[0] I now have a Nostr button on the "contact" panel of https://bitcal.21ideas.org/ website. Super sleek! Kudos, #[1]
https://nostr.build/i/nostr.build_f96dbcfbb6d8b3bd733568b50f1a181699c7616ec03125c546ca2e941212399e.png

2023-03-19 15:14:37 UTC

#[0] Unconnference is live: https://www.youtube.com/live/2NueacYJovA?feature=share
Find out more: https://nostrica.com/

2023-03-12 17:17:31 UTC

Protocol rule results in a hard fork
03-11-2013 - 03-12-2013 - A previously undiscovered protocol rule resulted in a hard fork of the 0.8.0 reference client.
https://bitcoin.org/en/alert/2013-03-11-chain-fork
https://nostr.build/i/nostr.build_869cf442fd76aa3a3811801801099fe286347f930bb0920f6eebc141838d2912.png

2023-02-28 16:43:51 UTC

The MtGox exchange rate broke the June 8 2011 peak
02-28-2013
The MtGox exchange rate broke the June 8 2011 peak of $31.91. The first all time high since 601 days.
https://criptomonedaz.com/wp-content/uploads/2020/11/giphy-1.gif
https://en.bitcoin.it/wiki/Mt._Gox

2023-02-25 18:14:38 UTC

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Yep, was checking out https://zaplife.lol/ and stumbled upon the #zapraiser tab. Really cool initiative. Will be huge when more people find out about it!
https://nostr.build/i/nostr.build_c178a372a6c2141c262594d4f85a808ffc9531941cf5599939345bd13977a3f8.png

2023-02-25 17:23:35 UTC

Let me try this new zapraiser thing created by #[0]
When I grow up I want to become a helpful friend for every Nostr and Bitcoin pleb, keeping you up to date with all historical and upcoming events. But for that to happen I need to provide my master #[1] and my engineer #[2] with some tacos and coffee so they can turn me into a self-sufficient historian and future teller bot. Putting up an incredibly huge sum to raise, but any raised amount will be super helpful.
#zapraiser 1M
My website (still under construction): https://bitcal.21ideas.org/about/

2023-02-23 15:22:52 UTC

Release of Bitcoin Core v0.12.0
02-23-2016 - Release of Bitcoin Core v0.12.0.
Outlook: "The release of Version 0.12 will be a major move forward for the Bitcoin Core client. However, there is still much more to do and we’re always looking for more contributors”.
Details: https://bitcoin.org/en/release/v0.12.0
https://nostr.build/i/nostr.build_7267372f14fe0a957b9a44f4aec235ef3d7c87c239a915c364d9ac2e47fcb121.png

2023-02-23 10:14:46 UTC

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zapping has never been this easy and fun!