# Contribution ENG

In **Bitcoin Aid**, participants have the opportunity to make a contribution by locking their BTCA in the distribution smart contract for **15 or 30 days**, depending on the user's choice. This mechanism is designed to reward community members who contribute directly to strengthening the ecosystem.

The advantages are clear:  by staking, the user can receive **50%** or **100%** of the dollar amount contributed, depending on the period chosen. In other words, after **15 days**, the user receives **50% of** the amount contributed, and after **30 days**, they receive **100%**. This model follows a **halving** pattern, similar to bitcoin, with gradual reductions in rewards over time, starting with **50% and 130%**, then **40% and 110%**, then **30% and 90%**, and finally **20% and 70%**.

The minimum contribution to participate is **10 dollars in BTCA**, and at the end of the period, the user will receive the equivalent amount in **BTCA**, plus the benefit. For example, with a contribution of **10 dollars in BTCA for 15 days**, the participant would receive 15 dollars in **BTCA** at the end of the period.

As well as rewarding users, the stake contribution process also plays a fundamental role in strengthening the community, as the coins locked and **distributed help to burn tokens**, reducing the total supply and promoting the appreciation of **BTCA**.

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NOTE: Halvings occur when supply currencies begin to decline, more details on the halving page.
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