Halving is a scheduled event in some cryptocurrency protocols, such as Bitcoin, which occurs from time to time to halve the reward given to miners for each block of transactions validated and added to the blockchain.

Main points about the Halving:

1. **Reward reduction:** During the normal operation of a halving cryptocurrency, miners receive a reward in the form of new coins (tokens) every time they manage to solve a new block of transactions. With the halving, this reward is cut in half.

2. **Scarcity mechanism:** The purpose of halving is to limit the supply of new coins entering circulation, thus creating a scarcity mechanism over time. This is critical for cryptocurrencies like Bitcoin, which have a set maximum supply.

3. **Periodicity:** The halving happens at predefined and regular intervals. In the case of Bitcoin, for example, it occurs approximately every 4 years (every 210,000 mined blocks). With each subsequent halving, the bounty is halved again, and so on.

4. **Impact on supply:** As the reward for miners is halved, the rate of new coin creation also decreases. This effect, combined with rising demand, could lead to a rise in the price of the halving-affected cryptocurrency as supply decreases.

5. **Expected Event:** The halving is known in advance and is widely anticipated by the community. It is often associated with a feeling of optimism and can generate significant attention in the media and cryptocurrency markets.

It is important to note that the halving is just one of several factors that can influence the price and behavior of cryptocurrencies. Other factors such as adoption, regulation, technological developments and macroeconomic conditions also play important roles in the cryptocurrency market.