Abstract: A method, computer system, and a computer program product for controlling access to an asset in a blockchain network is provided. The present invention may include encrypting the asset using a target encryption key. The present invention may also include storing the encrypted asset on a ledger. The present invention may then include receiving a start encryption key to access the asset. The present invention may further include traversing a graph of keys beginning with the start encryption key across a plurality of nodes and edges until reaching the target encryption key. The present invention may also include allowing access to the asset based on reaching the target encryption key.

Abstract: A method, computer system, and a computer program product for controlling access to an asset in a blockchain network is provided. The present invention may include encrypting the asset using a target encryption key. The present invention may also include storing the encrypted asset on a ledger. The present invention may then include receiving a start encryption key to access the asset. The present invention may further include traversing a graph of keys beginning with the start encryption key across a plurality of nodes and edges until reaching the target encryption key. The present invention may also include allowing access to the asset based on reaching the target encryption key.

Abstract: Message grouping using temporal and multi-factor similarity includes grouping multiple messages of a corpus in a group messaging system into a number of message bursts. Each message burst includes a number of messages that have a temporal relationship. Multiple of the number of message bursts are grouped into a message cluster. The grouping is based on a similarity of the number of message bursts as defined by multiple features of the message bursts.

Abstract: A venting closure is provided which retains the contents of a screw-top container yet prevents distortion of the latter under the influence of a pressure differential applied from without. It consists of a cap fitted with a gasket which is supported circumferentially around the entire rim of the container by a plurality of flanges which at no point have a pitch greater than that of the screw threads; and which are disposed in relation to one another so as to permit air that has passed from the outside of the container along the container threads to enter the space between the gasket and the underside of the cap. The gasket normally seals against a central boss depending from the cap underside; however when external pressure exceeds that within the container by a predetermined level it momentarily lifts the gasket from its seat, admits air into the container through a central hole in the gasket, and tends to equalize the pressures.