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Frequently asked questions (FAQ)
Q 1
When should the term bitcoin be capitalized?


  • Use bitcoin (lowercase) in all cases.

Example: "I installed bitcoin software, downloaded the bitcoin blockchain, and received 1 bitcoin after giving my bitcoin address to my employer. I received 0.03 bitcoins as a tip. Maybe I'll sell my bitcoins on a bitcoin exchange."

Former good articleBitcoin was one of the Engineering and technology good articles, but it has been removed from the list. There are suggestions below for improving the article to meet the good article criteria. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake.
Article milestones
July 14, 2010Articles for deletionDeleted
August 11, 2010Deletion reviewEndorsed
October 3, 2010Deletion reviewEndorsed
December 14, 2010Deletion reviewOverturned
January 26, 2015Good article nomineeNot listed
April 4, 2015Good article nomineeListed
July 26, 2015Good article reassessmentDelisted
Current status: Delisted good article
Stock post message.svg To-do list for Bitcoin: edit·history·watch·refresh· Updated 2019-11-10

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Nice source from Harvard Business Review on energy consumption Thanks! Jtbobwaysf (talk) 10:25, 8 May 2021 (UTC)

might be better to put this in the template:refidea, so it does not get archived away if not added quickly. Emir of Wikipedia (talk) 20:20, 6 June 2021 (UTC)

Bitcoin symbol renders weirdly on this page – is that just me?[edit]

On this page (and other pages where the Bitcoin symbol ₿ is used), the Bitcoin symbol renders for me as appearing like an "Ộ", a letter O with a circumflex above and a dot below. But when I copy and paste the symbol, it appears correctly as the letter B with the vertical lines. While I don't think it's an issue specific to Wikipedia, has anyone else noticed this problem with this symbol on this Wikipedia page or any other page? Paintspot Infez (talk) 17:50, 10 May 2021 (UTC)

Renders normally for me, maybe try asking at WP:VP/T? ‑‑Volteer1 (talk) 09:11, 13 May 2021 (UTC)

Extended-confirmed-protected edit request on 13 May 2021[edit]

Musk said tesla no more accept bitcoin, cause of energy waste and pollution by coal. Voice need to be update-- (talk) 13:34, 13 May 2021 (UTC)

 Not done: please provide reliable sources that support the change you want to be made. Run n Fly (talk) 13:38, 13 May 2021 (UTC)
Are you unable for a google search?-- (talk) 13:54, 13 May 2021 (UTC)

Extended-confirmed-protected edit request on 20 May 2021[edit]

In the design section, there is a graph of the elliptic curve secp256k1. The caption of the photo says this picture is over the algebraic number field of real numbers R^2. The real numbers are not an algebraic number field, it would be more correct to just say the field of real numbers. Also, writing the R in blackboard bold latex font would also be more clear. — Preceding unsigned comment added by (talk) 23:41, 20 May 2021 (UTC)

 Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. Emir of Wikipedia (talk) 19:24, 25 May 2021 (UTC)

Suggested Change: Change the caption of the photo "Graph of the elliptic curve named secp256k1 over the algebraic number field of real numbers, " to "Graph of the elliptic curve named secp256k1 in " — Preceding unsigned comment added by (talkcontribs)

 Partly done: I did that, except just linked real coordinate space as R^2 could be confused with other things anyway. The confusion is that it's actually defined over Z/pZ for primes p, which is a field, but I think whoever originally added it copied it over from bitcoin wiki without understanding what it meant. ‑‑Volteer1 (talk) 15:33, 5 June 2021 (UTC)

Extended-confirmed-protected edit request on 5 June 2021[edit]

citation added.

As of 11 May 2020,[1] the reward amounted to 6.25 newly created bitcoins per block added to the blockchain,[2] plus any transaction fees from payments processed by the block. Wish.big (talk) 15:05, 5 June 2021 (UTC)

 Not done: SEC filings—like court filings—are considered either WP:PRIMARY or self-published sources and are not considered reliable. JBchrch talk 16:13, 5 June 2021 (UTC)

Info about Salvador the infobox[edit]

Hi, I don't know whether the legal status of Bitcoin in El Salvador should be in the lead or not, but I think it should be in the infobox in any case. Template:Infobox currency has a field called "using_countries" but Template:Infobox cryptocurrency does not. Should we add such a field to the cryptocurrency infobox only to cover the case of El Salvador and Bitcoin (for now)? A455bcd9 (talk) 09:28, 9 June 2021 (UTC)

Agree probably infobox template should be edited. Probably need to have a discussion on the template itself. @David Gerard: thoughts? Jtbobwaysf (talk) 11:23, 9 June 2021 (UTC)
I think it would be better to wait and see whether more countries adopt cryptos as legal tender. For the moment, it may be an isolated event. JBchrch talk 11:42, 9 June 2021 (UTC)
Plausible, but this entire El Salvador bitcoin deal is weird. I would say this is a case for not-immediatism. The law being passed this morning is pretty article-significant, I should be clear - David Gerard (talk) 12:11, 9 June 2021 (UTC)
Agree on the wait and see position of David and JB, infobox is the ultimate level of wikivoice, we should be cautious Jtbobwaysf (talk) 13:53, 9 June 2021 (UTC)
Also worth noting: the law does not take effect until 90 days from now, or when (per art. 14) the Trust is established, whichever happens second - David Gerard (talk) 15:05, 9 June 2021 (UTC)
It appears it has been added anyhow, apparently without talk page consensus. My concern about the current version of the infobox states "users" as El Salvador. However, we also have in the article that Zug accepts bitcoin for some type of payments, and we also have millions of bitcoin "users" (aka people). I think this requires more thought, and I dont see the urgency to add this to the infobox prior to the 90 day time period that David has referred to, as it implies it can be used today. Can bitcoin be used today in El Salvador? Jtbobwaysf (talk) 09:32, 11 June 2021 (UTC)
Hi, Yes sorry I posted this message about the infobox then thought actually I should do it and didn't wait for answers, sorry... Regarding the terminology, "Official user(s)" is the one used in Template:Infobox currency, that's why I used it, assuming there was a consensus for this terminology. But I think that the name of the variable ("using_countries") is probably better. A455bcd9 (talk) 07:55, 12 June 2021 (UTC)

A455bcd9, all the sources say that the law was adopted on the 9th. [3][4][5] Why are you changing it? JBchrch talk 09:22, 11 June 2021 (UTC)

I understand from the text of the law and the official website of the Legislative Assembly of El Salvador that the law was adopted on June 8th: "La Asamblea Legislativa decretó este 8 de junio de 2021 un total de 10 artículos como disposiciones generales" [6]
The tweet of the president was posted 5 minutes after midnight, El Salvador time (CST). And by the way, I remember that during the vote, on the live Twitter Spaces, the president and his brother said that the law had been adopted just before midnight (CST). There's a 2-hour difference between El Salvador time and time in NYC (EDT) so for journalists in NYC (and even more in London) the law was adopted on the 9th.
But I agree it's not 100% clear. A455bcd9 (talk) 07:33, 12 June 2021 (UTC)
Just found the Diario Oficial 9 de Junio de 2021.indd which says on page 15 about the Ley Bitcoin: "Dado en el salon azul del palacio legislativo: san salvador, a los ocho dias del mes de junio del ano mil veintiuno." But then: "Casa presidencial: San Salvador, a los nueve dias del mes de junio de dos mil veintiuno." If it works as it does in France (and I assume it does because most countries in Latin America were inspired by the Napoleonic Code), then a law adopted on one day is published on the official journal on the following day, but the publication date is not the date of adoption. So I conclude that the law was published on June 8th. A455bcd9 (talk) 07:43, 12 June 2021 (UTC)
@A455bcd9: I understand your point, but in presence of ambiguous WP:PRIMARY sources, it is necessary to rely on reliable WP:SECONDARY sources with a reputation for fact-checking and accuracy. And here we have the FT, the WSJ and Bloomberg telling us the date is the 9th. Besides, in my experience, it's impossible to determine these kinds of things by looking at government documentation and without a solid understanding of how the specific government in question works. Often—and not only in developing countries—laws are enacted, on one day, adopted on another, published on yet another, officially published on yet another etc etc. It's very confusing. JBchrch talk 10:11, 12 June 2021 (UTC)
The primary sources aren't that ambiguous to me. Regarding secondary sources, I read the Bloomberg article, but which part of the article mentions it was adopted on the 8th? On the WSJ is says: "according to the three-page bill that was submitted Tuesday evening and swiftly approved after midnight by lawmakers of President Nayib Bukele’s New Ideas party", so we have again this question of before/after midnight. Unfortunately, I don't have access to the FT, what does it say about the publication date? A455bcd9 (talk) 15:48, 12 June 2021 (UTC)
WSJ says El Salvador passed a new law on Wednesday. FT says The legislature, which Bukele controls, passed the bill with 62 of 84 possible votes on Wednesday. It's true Bloomberg doesn't state the date, but it's easy to find more sources from top sources: Reuters [7] says El Salvador became the first country in the world to adopt bitcoin as legal tender after Congress on Wednesday approved President Nayib Bukele’s proposal. JBchrch talk 15:57, 12 June 2021 (UTC)
Thanks. So we don't know if it's Wednesday Salvador time or Wednesday for the author. Given the uncertainty I removed the day, I think the month and the year are enough for this article. But the problem persists for the Bitcoin Law article. A455bcd9 (talk) 16:00, 12 June 2021 (UTC)
Do newspapers date their stories with the time at their headquarters? I would be very surprised if that was the case. I am pretty sure that the dates are given relative to the timezone of the relevant place that is being discussed? In addition, I think the exact date is important encyclopedic content, so we have to come to a consensus decision one way or the other. But the consensus among the reliable, secondary and independent sources looks clear to me. JBchrch talk 16:22, 12 June 2021 (UTC)
Yes, the exact date is important for Bitcoin Law (where someone else wrote June 8th) but that for this article about Bitcoin in general I think it's not. And yes the consensus in secondary sources is June 9th (even though it seems wrong to me). I asked the President + the gov on Twitter by the way, but I guess they won't answer... A455bcd9 (talk) 16:29, 12 June 2021 (UTC)
On the website of the Legislative Assembly they have:
I guess next week both links will be updated. A455bcd9 (talk) 16:43, 12 June 2021 (UTC)
I think the key point is that here at wikipedia we follow, we dont lead. We just follow the sources and be careful of what we say in WP:WIKIVOICE. If we editors dont know here on the talk page, we shouldn't be saying it in the mainspace. Bitcoin Law itself says the law is not yet in force, so if it is not in force how can we use it the bitcoin article (this article) as legal tender? Seems these two wikipedia articles are conflicting with each other in a WP:POVFORK (not ok). Thanks! Jtbobwaysf (talk) 10:55, 13 June 2021 (UTC)
Yes, there's, unfortunately, a conflict between these two articles. Regarding the date of adoption, I think Lexology is a quality source, and this article says: "Una vez incorporada la propuesta de Ley BTC fue aprobada a las 00:01 horas del día miércoles 9 de junio, con 62 votos a favor." If true, then the law was indeed adopted on June 9th. Regarding the enforcement date, the 90-day delay is not mentioned in all secondary sources (WSJ and Bloomberg for instance), as if for these journalists it was already taken for granted. But a note could be added to mention that it'll be legal tender on Sept 7th 2021. A455bcd9 (talk) 20:28, 13 June 2021 (UTC)  A455bcd9 (talk) 20:28, 13 June 2021 (UTC)