Tickers
A ticker enables the execution of code through graffiti.
As for example, the Heroglyphs team launched a game with multiple tickers, allowing people to mint genesis tokens. Visit Game for more information.
Tickers use the Harberger tax system, which means that nobody truly owns a ticker. In fact, there are two ways to lose access to a ticker as an owner:
Deposit reached zero: Tax consumed all your deposit.
Hijacking: Someone bought your ticker.
Create / Update a Ticker
Tax
The tax is straightforward: you can set a price for your ticker, indicating the amount you are willing to accept for someone to hijack your ticker. This price must be repaid over the year.
If the tax consumes all your deposit, your ticker will be surrendered to the system, its cost will be set to zero, making it free to be hijacked by anyone.
Hijack
Your ticker has a 7-day protection against hijack starting from the moment you own it. After that period, anyone can buy it at your set price to take ownership of your ticker.
Use case
Tickers are permissionless, so anyone can create one at the cost of 0.1 ETH. This can be useful if you want to have a "hidden" ticker that interacts with a contract you desire. This way, if the main ticker is hijacked or surrendered, you can still enjoy its benefits, as yours will remain functional.
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