Is it against the law to sell Bitcoin at a flea market? I think this would be a cool side gig and I have some ideas about how to make Bitcoin more accessible to the general public. But I don't want to break the law either. These would be normal flea markets where vendors pay $20 for a booth and then sell their wares. Is there an authority I can ask? Do I need a special license?
Since sales are in dollar and the OP does not specify a jurisdiction, I will assume Washington state US. You may need a business license, depending on the municipality. There are various permits required for sale of certain wares, such as food, explosives or poisons, but otherwise no special municipal permits are required. A state money transmitter license is required, and there are a number of bond and auditing requirements that also have to be obeyed. The state has a website which implies the pertinent restrictions, but does not actually explain them or how to comply: you would need to hire a lawyer to determine what you have to to to be legal. Those restrictions are not limited to flea markets, they regulate all bitcoin sales in the state, including internet and yard sale.
How come this is viable? Because it’s legal. What if people use their service to commit crimes? What if people use a Ford in a bank holdup? Or a Glock in a murder? Or the US Postal Service in a Nigerian letter scam? If the goods or services are legal and not provided for an obviously illegal purpose, nothing happens.
Purchasing a lot that contained the keys does not provide any rights to access the locks that those keys would open. What someone who did this would be charged with would vary by both location and also by prosecutorial discretion. The only exception in this scenario would be if the storage locker contained the deed to the property in question.
Illegal to write? No. Notwithstanding the First Amendment which would almost certainly make a law prohibiting it illegal, writing such things is an essential part of an IT security professional’s toolkit. You can’t protect against worms if you don’t know how they work. Illegal to distribute on an unauthorised computer? Absolutely. This would be a clear breach of the Computer Fraud and Abuse Act.
You are conflating the crime against the state of possession stolen goods with the common law tort against the owner for conversion. To your questions: How would this proceed? It seems like it would be very difficult to prove (short of getting public surveillance footage) that I even bought the item. If you read the second paragraph of the page you linked it says: In many jurisdictions, if an individual has accepted possession of goods or property and knew they were stolen, then the individual is typically charged ... If the individual did not know the goods were stolen, then the goods are returned to the owner and the individual is not prosecuted. Proof of the crime involves a "beyond reasonable doubt" standard of evidence of both the fact that you have the goods and that you knew they were stolen. If you become aware that they were stolen (e.g. the police tell you) and try to keep them then you have just committed the crime. Proof of the tort requires a "balance of probabilities" standard of evidence that you have the goods and that they belong to someone else; your knowledge that they were stolen is immaterial. In the first instance, the police would probably knock on your door, tell you why they were there and ask if the version of the story they have from the thief is essentially true. What happens next depends on your response: "Yes, I knew it was stolen; you better arrest me and I will plead guilty." This will play out as you expect. "Yes, I didn't know it was stolen, I will go and get it for you." You return the goods, give a statement and may have to act as a witness in the prosecution of the thief. You are down $1,000 but are now older and wiser. "No, I have no idea what you are talking about." Well, you have now committed the crime of hindering a police investigation and have also committed the crime of possessing stolen goods - you can no longer claim that you didn't know the goods were stolen; the police have told you they are. What happens next depends on if the police believe you or the thief. Surely they couldn't/wouldn't get a warrant to search my house? Want to bet? They certainly have enough to get a search warrant if they want one (probably). Whether they seek one probably depends on the value of the goods, how busy they are and how much you pissed them off. Could I be prosecuted if I didn't know it was stolen? Not if you return it as soon as practicable after being made aware that they were. The scam This seems like a lot of work for a very small return - spend your time worrying about things that are more likely to happen. Good Title All of this is tied up with the concept of good title. Basically, you cannot gain good title to property from someone who does not have good title themselves; if you buy goods from a thief you do not own them. For example, if A has good title to the goods, B steals them and sells them to C who sells them to D then A still owns them and can demand their return from D, D could demand the return of their money from C and C could do likewise with B but as far as A is concerned it doesn't matter that C &amp; B have lost money; that is simply too bad for them.
Note, Washington State Senate Bill 5061 seeks to block certain "untracable" firearms without a serial number. This relates in part to "3D printable" guns, but the act of milling of a 80% lower (in Washington) could be a violation, if and when it passes. But it appears the bill hasn't been made a law yet... Is Washington specific news this issue what drives the question? Federally, the ATF web site says: Receiver blanks that do not meet the definition of a "firearm" are not subject to regulation under the GCA. The ATF has long held that items such as receiver blanks, "castings" or "machined bodies" in which the fire-control cavity area is completely solid and un-machined have not reached the "stage of manufacture" which would result in the classification of a firearm per the GCA. But this gets a bit technical. For further risk mitigation, the Texan could mitigate any risk related to both Federal and Washington state law by shipping it to a federal firearms licensee (FFL) in Washington as if it were a firearm, per ATM instructions which say (in part): Generally, for a person to lawfully transfer a firearm to an unlicensed person who resides out of State, the firearm must be shipped to a Federal Firearms Licensee (FFL) within the recipient’s State of residence. He or she may then receive the firearm from the FFL upon completion of an ATF Form 4473 and a NICS background check. That FFL is then responsible for ensuring the transaction properly conducted in the state of Washington, including federal and state requirements. The FFL I contacted only charged $25.00 (plus collecting the state sales tax). Form 4473 was easy enough; only about one page for me to fill out. Of course, I've got a clean record, so going through channels isn't a problem for me, it took less than an hour. The FFL confirmed for me that it wasn't necessary for something like an antique musket, which legally isn't a firearm by the federal defeinitions. In my case the sender was a nervous "trust" lawyer who wasn't sure, hired yet another lawyer to advise him. The FFL didn't charge me anything for receiving that musket.
united-states The license won't let you sell the .stl file. Probably you have created a derivative work, which means you can't sell it without a copyright license (and the CC-A-NC won't do). If it were licensed under CC-A you could sell it without problems (you'd have to give attribution, of course). You could also sell it under the CC-A-SA, but once you do you have no control over the result -- anyone you sold it to could give it to someone else under the terms of the license. This could work, though, if it were (say) a commission and you only expected to sell one copy. I don't know what the situation would be with the physical objects printed under any of these licenses.
I think the concerns are more economic than legal, although legal concerns are sometimes present. You don't want people to trash the place. You want there to be an &quot;authority figure&quot; whose presence encourages order, deal with unexpected situations, and whom people who aren't tech savvy feel comfortable dealing with, and it can create a better customer service relationship. It really depends on the nature of the premises. There is not a one size fits all rule. There are situations where one doesn't have someone on the premises. There are bank vestibules with automatic teller machines in them. There are coin entry bathroom/shower facilities. There are self-storage facilities that work like that. There are deeply rural places with low traffic that rely on an honor system rather than trying to monitor use (e.g. some campsites). There are AirBnB type rentals. The are car repair shops with after hours drop off boxes. On the other hand, there are some situations where it is pretty much inconceivable that you wouldn't have someone one site monitoring the situation. I'm pretty sure that you have to have someone on premises for a pub. I'm sure it is necessary in places where you have unaccompanied minors (at a minimum, as a practical reality for liability purposes). There aren't many medical services that can be provided in that format (although there might be a few).