Abstract: A method includes, during an initial time: receiving a manifest request, for a video, from a device associated with a first address; generating an identifier associated with the first address; generating a manifest defining a set of segments available for the video; and serving the manifest. The method further includes, during a first time: receiving a first request for a first segment, in the set of segments, the first request associated with the first address and the identifier; and based on association between the first address and the identifier, serving the first segment to the first address. The method also includes, during a second time: receiving a second request for a second segment in the set of segments, the second request associated with a second address and the identifier; and based on disassociation of the second address and the identifier, withholding delivery of the second segment to the second address.

Abstract: A retinal vessel shadow view optical coherence tomography (RVSV-OCT) image can be created by receiving, at an enhanced OCT processing system, volumetric OCT scan of a patient. The system can segment the volumetric OCT scan to determine layer boundaries and delineate a boundary of interest based on the determined layer boundaries of the segmented volumetric OCT scan. En face vascular information can be extracted to create an RVSV-OCT image by determining a first offset from the boundary of interest and a second offset from the boundary of interest; extracting volumetric data from an area between the first offset and the second offset to create a three-dimensional volume; and identifying a two-dimensional surface from the three-dimensional volume, the two-dimensional surface being the RVSV-OCT image. The RVSV-OCT image can be provided for analysis, for example, to evaluate retinal vascular disease in preterm infants at risk for retinopathy of prematurity.

Abstract: A machine and process for making and for using a machine. The process includes receiving, by the computer over a network, a notification of a payment comprising an amount of cryptocurrency and a first cryptocurrency address, and effectuating, by the computer, the purchase by using the amount and the cryptocurrency address from which a first public key can be derived, and applying the computer system to verifying that a digitally represented human or entity purporting to have made a purchase with cryptocurrency is entitled to obtain value for the purchase.

Abstract: A machine and process for making and for using a machine. The process includes receiving, by the computer over a network, a notification of a payment comprising an amount of cryptocurrency and a first cryptocurrency address, and effectuating, by the computer, the purchase by using the amount and the cryptocurrency address from which a first public key can be derived, and applying the computer system to verifying that a digitally represented human or entity purporting to have made a purchase with cryptocurrency is entitled to obtain value for the purchase.