Exploiting a bug in bitcoin is unethical, but is it illegal? Suppose I found a bug in bitcoin or any other cryptocurrency that allows me to create as many coins as I want. What would be the legal implications in jurisdictions like: USA Europe (UK, Germany, France) Asia (China, India, Russia)
Any answer is somewhat speculative, because there are no significant legal precedents. That said, you are probably not in breach of counterfeiting laws, as they typically protect physical currencies. However, due to the way that laws are written, their scope may be somewhat fuzzy in areas that were not foreseen, so you may find that a law unintentionally does cover your act. However, even if the act would fall under the law as written, jurisdiction remains an issue. Where would this counterfeiting happen, legally? Again, as this was not foreseen by lawmakers, it's possible that you may fall under foreign jurisdictions, e.g. because you spend the fake BitCoin and the the recipient lives in a country that assumes jurisdiction because their citizen was defrauded.
someone could ... mistakenly assume that by playing the game he can win 100 gold coins aging 2500+ years. Yes someone could, if they were an idiot, however, that is not the legal criteria. The legal criteria is if a reasonable person would.
Ideas (methods of playing, game mechanics, strategy, goals) cannot be protected by copyright. But any part of a creative work can. So, no copying of drawings, patterns, images, sounds, or the element. I suppose copying the software code is not an issue here, but it can, obviously, also not be copied. And nothing in your game can look like someone's else trademark.
Cheating in video games is not against the law. (If it's not for profit) IANAL The legality of cheating in video games has already been challenged in a court of law. You see, Nintendo didn't want people to cheat. Fearing it would lower the financial value of their games if you can beat them in just a few minutes. It was argued in court that a video game is no different than a book. If you want to read the end of the book, skip to your favorite chapter or skim quickly through a boring part you can. The conclusion is the game is yours to enjoy in anyway you want. Nobody can tell you how to play your game. There's an interesting and short documentary about the legal history of cheating in video games by the gaming historian. Also it doesn't matter what the TOS says. TOS is not legally binding Good news: another federal judge has ruled that violating a website terms of service is not a crime. But there's bad news, too — the court also found that bypassing technical or code-based barriers intended to limit access to or uses of a website may violate California's computer crime law. However, I've read you can be sued for breach of contract, if the site can prove any damages based on your cheating. I found that answer here on Law.SE and they didn't provide a source so I can't verify if it's true.
This kind of quotation, for commentary, criticism, or reference, is generally allowed without obtaining permission. In the US, this falls under fair use (see 17 USC 107. In the UK and most commonwealth countries, it falls under fair dealing. In other countries there are various exceptions to copyright that will probably cover this. Even answers that do not directly quote the rule books often use information from those rulebooks to write an answer. Facts and ideas are never protected by copyright, so this is not going to be an issue. See 17 USC 102(b), which provides: (b) In no case does copyright protection for an original work of authorship extend to any idea, procedure, process, system, method of operation, concept, principle, or discovery, regardless of the form in which it is described, explained, illustrated, or embodied in such work. As a comment by user Trish reminds, game rules are facts and are not protected, although their exact wording may be.
It infringes the copyright. It can easily be proved that both XOR1 and XOR2 derive from the source work by XOR-ing the streams with each other. It's just like any encrypted copy: it infringes the copyright, but only those who can decrypt it are in a position to know that it infringes the copyright. The posts on the forum are illegal because they infringe the copyright; it doesn't matter that they are derived works rather than the work itself, just as your drawing of a copyright-protected image infringes copyright because it is a derived work without being the work itself.
I see that this would put me under heavy US regulation, and I'd like to avoid that, since it would require huge funding to hire lawyers to do something like that. There are many reasons for financial and banking industry regulations; namely, fraud protection, corruption and money laundering preventions, use of crypto to avoid taxes and records, etc. If you're serious about a startup that involves financial transaction, one of the first things you do is find a law firm to advise you on the legal plausibility of an idea. And be prepared to spend thousands and thousands of dollars in legal fees for regulatory approval. Would doing something like this solve my problem? You're really going to trust randos on the web for legal advice?
Presumably by &quot;is illegal&quot; you mean &quot;violates copyright law&quot;. Copyright infringement is simply &quot;copying / distributing without authorization&quot;, which refers to the original work and not some other work. The act of originally writing a book is not &quot;copying&quot; (likewise &quot;taking a picture&quot;, etc), so the act of writing a book using pirated software is also not copying and not infringement. Nevertheless, the scope of remedies for the original infringement is not limited to just the cost of the infringed work. Under 17 USC 504(b), The copyright owner is entitled to recover the actual damages suffered by him or her as a result of the infringement, and any profits of the infringer that are attributable to the infringement and are not taken into account in computing the actual damages. This is sufficiently open-ended that profits from the sale of an original work created using infringed software could be attributable to the infringement.