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Beit Midrash
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Question: I have been learning about bitcoin. Is it considered like money or a shtar (document) for a variety of halachic issues, e.g., marrying a woman, buying property?
Answer: We will not express a view about the value or danger (there are claims of links to money laundering and other criminal activity, dangerous volatility, …) but will look at a few areas in halacha in which determining bitcoin’s status would be significant.
Kiddushin can be accomplished by a groom giving a bride anything of value, whether a currency, a commodity (Kiddushin 2a), or theoretically even a service (see the complication discussed in Kiddushin 63a and Shulchan Aruch, Even Haezer 28:15). If a groom transfers to the bride rights to a debt a third party owes to him, even if done by speech without handing her a shtar, it can still work (Shulchan Aruch ibid. 13). The important thing is that he provides value, as long it is done positively, as opposed to something such as forgiving paymentof a debt (ibid. 10). Even in the latter case, if one says he is marrying her with the benefit she receives by forgiving the debt, it is valid (ibid.). Therefore, with the right wording, a bitcoin transfer from groom to bride can work (it is a good question at what point in the electronic process the kiddushin would take effect).
Bemare Habazak - Rabbis Questions (654)
Rabbi Daniel Mann
213 - Filling in a Copy of the Ketuba Late
214 - Halachic Status of Bitcoin
215 - Early Reading of Megillat Esther
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Halacha distinguishes between currency (tiv’a) and commodities (peiri). One contemporary application relates to the kinyan of chalifin(appr., barter), which applies to commodities and not money(see Bava Metzia 44a-45a). Another is in terms of a Rabbinic form of ribbit (usury) called se’ah b’se’ah. That is, that it may be (depending on complicated parameters) forbidden to lend a certain amount of a commodity, demanding that it be replaced by the same amount of that type of commodity. This is because loans are defined in terms of currency. If one borrows 5 lbs. of apples costing $10, he is to return $10 in some form (including apples), and not 5 lbs. of apples, if the price has changed. If one borrows $100 of cash, he is to return $100, even if the dollar’s value has gone up or down. In these regards, bitcoin is a commodity, not a currency. The clearest reason is that bitcoin is not presently universally accepted as payment (Bava Metzia ibid.). Even a national currency has that status only in a country in which it is widely accepted among people. Bitcoin is not yet close to achieving that.
Rabbis in Midrash
Lessons
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Kuzari -Rabbi Ari Shvat Kuzari class 9 - "Seeing is Believing" (parag. 21-30)
These paragraphs elaborate on the theme that seeing and knowing is better than any attempt to prove logically, and begins explaining the difference between Israel and gentiles.
Ein Aya Various Universal Stages of the Geula Process
Rav Kook examines the various stages of redemption, explaining how (in addition to the obvious oft-mentioned stages of ingathering the exiles, reviving the Hebrew language, army, state etc.) the messianic dream of world prosperity, the State of Israel and world unity can and are realistically and logically gradually coming true.
Kuzari -Rabbi Ari Shvat Kuzari class 8- "Answering Questions on the Kuzari's Proof from Mass Revelation
How do we know that the "claim" of mass revelation to 2,000,000 witnesses at Mt. Sinai is really true? This important class answers all of the questions skeptics ask about this claim of the Kuzari.
Ein Aya Armies Still Necessary for Balance & the War Against Wars
Rav Kook explains why the world was originally divided into the various seemingly contradicting ideologies and cultures, in order to develop each one respectively. Swords or armies symbolize how each respective ideology defends themselves, as well as deters their opposing ideologies and cultures. On the other hand, the messianic era will be one of peace, and Rav Kook explains the transition to that stage, which mankind is already undergoing.
The Land of Israel LGBT'S IN ISRAEL
The question was asked, how can one make Aliyah with the LGBT parades?
Kuzari -Rabbi Ari Shvat Kuzari class 7 - Five Accumulative Proofs of G-d
As a preparation for the Kuzari's classic proof of G-d from the mass-revelation at Sinai, we start here with 5 other directions to strengthen our belief which also contribute to what the Kuzari will present as well.
Ein Aya Muscle & Meaning: The Dual Nature of Gevurah (Physical Strength)
Is physical strength and fitness a necessity or an ideal? Although it if often totally overlooked among topics of Judaism, Rav Kook writes that it clearly is also a necessity to deter the many enemies of Israel, but even in Y'mot HaMashiach, in the Messianic era, to a certain extent, it's ideal continues even after our enemies will have been finished off.
