Abstract: A swap check oracle receives a transfer request from a user or smart contract on a first blockchain indicating a first digital asset to be transferred. The swap check oracle verifies the authenticity of the user and/or digital asset and instructs the smart contract to transfer the first digital asset to a custodial blockchain address on the first blockchain. Another swap check oracle performs the same process for a second digital asset from a second user on a second blockchain. A central processing server is notified of the successful transfer of the digital assets to the custodial addresses on both blockchains, verifies the holding of the digital assets by the custodial addresses, and then initiates a release of the digital assets to the new parties on both of the blockchains.

Abstract: A method for transaction settlement using guarantee tokens includes: receiving a transaction request from a first financial institution including a receiving party digital address, a digital token issued by the first financial institution to the receiving party digital address, a sending party address, an asset network identification, and an asset identification; generating a guarantee token against the digital token; generating an asset request transaction including the guarantee token, the receiving party digital address, the sending party digital address, and the asset identification; transmitting the asset request transaction to the asset network; receiving an asset transaction from the asset network including the asset, the receiving party digital address, and the sending party digital address; generating an asset transfer transaction including the receiving party digital address, the sending party digital address, and the asset identification; and transmitting the asset transaction to the receiving part

Abstract: Systems and methods for detecting ions in samples. In one embodiment, the system includes a field-effect transistor sensor and an electronic controller. The field-effect transistor sensor is in contact with the sample and includes a first electrode and a second electrode. The electronic controller is coupled to the field-effect transistor sensor. The electronic controller is configured to apply a pulse wave excitation signal to the first electrode. The electronic controller is also configured to receive a response signal from the second electrode. The electronic controller is further configured to determine an electrical characteristic of the field-effect transistor sensor based on the response signal. The electronic controller is also configured to determine an amount of the ions in the sample based on the electrical characteristic of the field-effect transistor sensor.