To put a signature on behalf of the multisig-account of the application in order to use the resources of the common bandwidth, the community generates a pair of private-public keys. The public key is stored securely in the blockchain, while the private community key is stored in a secure part of the service (normally, a website). The signature on the use of resources is stamped with a private key, and the check is performed with a public key. Signers of a multisig-account can at any time change the common private key to access the bandwidth in case of inappropriate use. The private key allows you to use bandwidth, but does not allow it to be liquidated or sold (for example, on any exchange).