Abstract: Systems and methods for providing identity verification services to users by providing a staking mechanism to incentivize participants in an identity verification system to be truthful and accurate and determining validator accuracy and associated setting of fees for using validator attestations to create an efficient, private and secure system.

Abstract: Embodiments of an integrated laser hot wire deposition head are disclosed. In one embodiment, the deposition head includes a structural frame, a laser process sub-system, a wire feeding device, and a contact tube. The laser process sub-system is mounted within the structural frame to deliver a single beam path laser beam in a longitudinally-oriented direction toward a substrate or a part to be additively manufactured. The wire feeding device and contact tube are mounted within the frame to feed a consumable filler wire toward the substrate or part at an angle with respect to the longitudinally-oriented direction. The deposition head can be moved omni-directionally with respect to the substrate or the part, under the guidance of a motion control system, to additively manufacture the part without having to angularly change an orientation of the single beam path laser beam from the longitudinally-oriented direction or rotate the deposition head.

Abstract: Embodiments of a high speed laser hot wire spraying system are disclosed. In one embodiment, a laser subsystem includes a laser power oscillator and a laser focusing device to generate a laser beam directed toward a substrate. The laser focusing device includes a high velocity coaxial gas nozzle to direct, coaxially with the laser beam, a stream of inert gas toward the substrate. A hot wire subsystem includes a power supply and a wire feeding device to feed a consumable metal wire toward the laser beam while resistively pre-heating a distal portion of the consumable metal wire. The laser beam provides energy to liquefy the distal portion of the consumable metal wire upon intersecting the laser beam. The stream of inert gas has a velocity to cause the distal portion of the consumable metal wire to be sprayed as liquefied particles onto a surface of the substrate.

Abstract: Methods and system of the present invention include hot-wire strip deposition system used in combination with a high heat source, where the system deposits a strip consumable into a molten puddle. During deposition the strip consumable is deposited at an angle relative to the workpiece surface and in some embodiments has a downforce applied to the consumable to maintain contact between the puddle and the consumable. The heating current for the consumable is turned off or greatly reduced when an arcing event is detected. In some embodiments the strip consumable can be curved to promote contact during the deposition process.

Abstract: Embodiments of an integrated laser hot wire deposition head are disclosed. In one embodiment, the deposition head includes a structural frame, a laser process sub-system, a wire feeding device, and a contact tube. The laser process sub-system is mounted within the structural frame to deliver a single beam path laser beam in a longitudinally-oriented direction toward a substrate or a part to be additively manufactured. The wire feeding device and contact tube are mounted within the frame to feed a consumable filler wire toward the substrate or part at an angle with respect to the longitudinally-oriented direction. The deposition head can be moved omni-directionally with respect to the substrate or the part, under the guidance of a motion control system, to additively manufacture the part without having to angularly change an orientation of the single beam path laser beam from the longitudinally-oriented direction or rotate the deposition head.