# Registration and Activation {% hint style="info" %} CityCoins require the [Stacks Web Wallet](https://hiro.so/wallet/install-web) to interact with the smart contracts on the [Stacks blockchain](https://stacks.co). (see [How do I get started?](/about-citycoins/how-do-i-get-started.md)) {% endhint %} CityCoins only exist through mining, which does not begin until 20 independent wallets signal activation after the contract is deployed. There is no ICO, no pre-sale, and no pre-mine, and there are no CityCoins issued or distributed prior to the start of mining. Once 20 users register to activate the contract, a 150 block (\~24hr) countdown begins, after which anyone is eligible to try and mine the CityCoins within a given Stacks block. {% hint style="info" %} Registration **is not required** once the contract is activated. After this process is complete, anyone who completes a mining or stacking transaction will automatically be registered as a user. {% endhint %} A nominal transaction fee is required in order to send this transaction, paid in STX, and you can optionally include a memo of up to 50 characters that will be recorded on-chain. For a more technical explanation, please see the [contract functions for activation](/contract-functions/activation.md#overview). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.citycoins.co/core-protocol/registration-and-activation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.