Generally speaking, no - but it's complicated. Every country has it's own securities regulations regime (which may also interact with other countries' regimes), and nearly every one imposes restrictions, exemptions, etc. on crowd funding (assuming here that you are referring to general solicitation).
For example, you can learn more about 506(c) here (for the USA):
Should you have additional questions regarding your specific domicile and circumstances, we strongly recommend that you consult an experienced attorney who can best advise you. Securities regulations are (depending on the jurisdiction) stringently enforced and can lead to sub-optimal consequences if violated.
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