Here's an example smart contract in Lua that burns an NFT after 12 months from the minted date.

subscription-365-days.lua

-- Smart contract to burn an NFT after 12 months from the minted date

function constructor()
  state.var {
    nft = state.nft('nft'),
    owner = state.address('owner'),
    minted_date = state.value(),
    burn_date = state.value()
  }
end

function deploy()
  owner:set(system.get_sender())
  minted_date:set(os.time())
  burn_date:set(os.time() + 31536000)  -- 12 months in seconds
  nft:initialize('Your NFT', 'YNFT')
end

function burn_nft()
  if os.time() >= burn_date:get() then
    nft:burn(system.get_sender())
  else
    error('NFT cannot be burned yet')
  end
end

In this contract, we use state.nft to create an NFT, and state.address to store the owner's address. We also use state.value to store the minted date and burn date as Unix timestamps.

In the deploy function, we set the owner to the sender of the transaction, and initialize the NFT with a name of 'MoltenChain NFT' and ticker/symbol of 'MCNFT'. We also set the minted date to the current time, and the burn date to 12 months from the minted date.

The burn_nft function checks if the current time is greater than or equal to the burn date, and if so, burns the NFT using nft:burn. If the burn date has not yet been reached, the function throws an error.

This contract can be modified to fit your specific needs, such as changing the NFT name and ticker, or adjusting the burn date.