Abstract: Methods and systems described herein may implement blockchain cryptocurrency transactions in a variety of environments. An online transaction processor may provide operations for user activity detection for locking cryptocurrency conversions. The transaction processor may detect used activities for a user online or at a physical location and determine that those activities indicate that the user will engage in electronic transaction processing at an upcoming time. The transaction processor may determine that the user has available cryptocurrency and may want to convert at least a portion of the cryptocurrency to another currency for the electronic transaction processing. Using a cryptocurrency exchange, the transaction processor may determine a price to convert the cryptocurrency to the other currency and may lock that price for a time period for the user. A notification may be transmitted to the user with a user interface element to accept this offer.

Abstract: A silicon carbide MOSFET device which contains a N-Channel MOSFET, and a JFET connected to the N-Channel MOSFET such that their drain-source current paths are connected in series. A gate of the JFET is connected to a gate of the N-Channel MOSFET device via a voltage divider, which is formed monolithically with the silicon carbide substrate and the first to fourth silicon carbide layers. The protection gate structure can shield the trench oxide from high drain voltage during off-state. The voltage divider is configured to restrict a gate voltage of the JFET such that a SiC PN diode formed within the silicon carbide MOSFET device is turned off when the N-Channel MOSFET is on or off.

Abstract: Methods and systems are presented for providing a framework for facilitating offline cryptocurrency transactions. A first application executed in a first secure enclave of a first device can register itself with a cryptocurrency computer network for initiating offline cryptocurrency transactions and reserve a denomination of cryptocurrency for the offline cryptocurrency transactions based on a token. The first application initiates an offline cryptocurrency transaction with a second application executed in a second enclave of a second device by transmitting a request comprising the token via a peer-to-peer connection. The second application verifies the request based on the token and attributes associated with the first application and the first secure enclave. Upon accepting the request, the second application stores the token in the second secure enclave.

Abstract: Novel technical ways of analyzing a blockchain system using machine learning are presented, including structures and techniques that can facilitate blockchain address risk assessment via graph analysis. In various embodiments, a system can access a blockchain. The system can build a transaction graph based on analysis of the blockchain. Nodes of the transaction graph can respectively represent blockchain addresses that are recorded in the blockchain. In various cases, edges in the transaction graph can respectively represent blockchain transactions between different ones of the blockchain addresses that are recorded in the blockchain. The system can calculate risk scores respectively corresponding to the blockchain addresses, based on analyzing the transaction graph via at least one machine learning algorithm. These techniques can improve computer operational efficiency by avoiding the execution of unnecessary blockchain transactions.

Abstract: Methods and systems described herein improve blockchain storage operations in a variety of environments. A blockchain compression system may determine that a blockchain compression condition associated with a blockchain having a first plurality of blocks has been satisfied. In response, the system compresses the first plurality of blocks using a first hash tree into a first root hash value and stores the first plurality of blocks in a first database. The blockchain compression system generates a first new era genesis block that includes the first root hash value and a first database address of the first database at which the first plurality of blocks are stored. The blockchain compression system stores the blockchain at one or more nodes in a blockchain network. The blockchain includes the first new era genesis block and any previous new era genesis blocks. This may effectively reduce storage requirements for the blockchain, in various embodiments.

Abstract: Novel technical ways of analyzing a blockchain system using machine learning are presented. In various embodiments, A system can deploy, by a first entity, a policy smart contract on a blockchain to analyze a first smart contract deployed by a second entity, wherein the policy smart contract is governed by a set of rules, wherein the policy smart contract performs a first assessment that includes analyzing a set of functionalities of the first smart contract and detects a set of vulnerabilities associated with the first smart contract based on the set of rules. The system can determine at a first time a risk score corresponding to the first smart contract based on the analyzing and the detecting. In response to determining that the risk score is above a threshold score, the system can restrict users of a first platform corresponding to the first entity from accessing the first smart contract.

Abstract: There are provided systems and methods for automated configuration of augmented and virtual reality avatars for user specific behaviors. A user may view a virtual environment and/or capture visual data utilizing a device at a location, where the visual data includes one or more real-world objects, or may interact with a virtual reality environment. An augmented or virtual reality experience may be displayed with virtual objects, graphics, avatars, and/or other virtual visualizations and interactions. A service provider may detect real-time data of the user's behaviors and current events or parameters for the corresponding augmented or virtual reality. Using available avatar customizations and configurations, the service provider may automatically configure avatars for presentation in such digital environments.

Abstract: Different communication and software protocols may be used by different blockchain networks. Cross-chain communication is provided via a software bridge configured to enable specific operations. An event request may be sent from a first blockchain network to a second blockchain network. The event request may be processed using a first protocol of the first network to provide a first output. An offer of equivalent processing provided by the second network may be verified by: processing the event request using a second protocol of the second network to provide a second output, and confirming that the second output matches the offer of equivalent processing. A processing equivalence of the event request may be established between the first network and the second network based on the first output of the event request processed using the first protocol and the second output of the event request processed using the second protocol.

Abstract: One embodiment provides a semiconductor device. The device comprises a substrate having a first face and a second face, a well region, a source region disposed in the well region, a contact region contacting the well region and the source region, a Schottky region, and a source metal layer. A first part of the source metal layer contacts the Schottky region to form a Schottky diode. The Schottky region is surrounded by the contact region and the well region in a first plane perpendicular to a direction from the first face toward the second face.

Abstract: An example method of configuring a plurality of aspects of a system includes providing, by a computing system, a control smart contract and a plurality of subordinate smart contracts on a blockchain, wherein each subordinate smart contract receives a respective input regarding a respective one of the plurality of aspects and outputs a respective decision, and wherein the control smart contract controls a configuration process incorporating the subordinate contracts according to the decisions of the subordinate contracts. The method further includes conducting, by a computing system, the configuration process according to the control smart contract; and configuring the aspects of the system according to the decisions of the subordinate smart contracts.

Abstract: Methods and systems are presented for authenticating web content. A request to authenticate web content is received from a user device. A first document object model (DOM) tree representing elements of the web content within a hierarchical structure is accessed. A hash value for each node of the first DOM tree is calculated based on the corresponding element of the web content represented by that node. A second DOM tree associated with a host of the web content is retrieved from a database. The second DOM tree represents predefined elements of the web content. The hash value calculated for each node of the first DOM tree is compared with a hash value associated with a corresponding node of the second DOM tree to determine whether the first DOM tree matches the second DOM tree. The web content is authenticated when the first DOM tree matches the second DOM tree.

Abstract: Different communication and software protocols may be used by different blockchain networks. Cross-chain communication is provided via a software bridge configured to enable specific operations. An event request may be sent from a first blockchain network to a second blockchain network. The event request may be processed using a first protocol of the first network to provide a first output. An offer of equivalent processing provided by the second network may be verified by: processing the event request using a second protocol of the second network to provide a second output, and confirming that the second output matches the offer of equivalent processing. A processing equivalence of the event request may be established between the first network and the second network based on the first output of the event request processed using the first protocol and the second output of the event request processed using the second protocol.

Abstract: A semiconductor device includes a device cell including a gate component configured to receive a gate control signal and a temperature sensing component adjacent to the device cell. Each of the temperature sensing component and the gate component includes polycrystalline silicon.

Abstract: There are provided systems and methods for automated configuration of augmented and virtual reality avatars for user specific behaviors. A user may view a virtual environment and/or capture visual data utilizing a device at a location, where the visual data includes one or more real-world objects, or may interact with a virtual reality environment. An augmented or virtual reality experience may be displayed with virtual objects, graphics, avatars, and/or other virtual visualizations and interactions. A service provider may detect real-time data of the user's behaviors and current events or parameters for the corresponding augmented or virtual reality. Using available avatar customizations and configurations, the service provider may automatically configure avatars for presentation in such digital environments.

Abstract: Methods and systems described herein may implement blockchain asset authentication. A verification system may generate an encryption key associated with a digital asset, wherein the digital asset is associated with a first entity. The verification system may sign the digital asset using the encryption key. The verification system may generate a first key and a second key based on the encryption key, wherein the first key and the second key are part of a set of multi-party secret keys. The verification system may send the first key to the first entity and store the second key on the verification system. The verification system may receive a request to authenticate the digital asset. The verification system may in response to the request to authenticate, generate the encryption key based on the first key and the second key. The verification system may authenticate the digital asset based on the recreated first secret.

Abstract: Methods and systems are presented for providing a framework for facilitating offline cryptocurrency transactions. A first application executed in a first secure enclave of a first device can register itself with a cryptocurrency computer network for initiating offline cryptocurrency transactions and reserve a denomination of cryptocurrency for the offline cryptocurrency transactions based on a token. The first application initiates an offline cryptocurrency transaction with a second application executed in a second enclave of a second device by transmitting a request comprising the token via a peer-to-peer connection. The second application verifies the request based on the token and attributes associated with the first application and the first secure enclave. Upon accepting the request, the second application stores the token in the second secure enclave.

Abstract: Methods and systems described herein may implement non-fungible tokens that implement a programmable grammar-based syntax in a variety of environments. In an embodiment, a first non-fungible token that implements a programmable grammar-based syntax standard and includes a first updatable programmable section is generated. The first non-fungible token includes at least one of first executable instructions or first data, and a first portion of the at least one of the first executable instructions or the first data is stored, according to the grammar-based syntax standard, in the first updatable programmable section. The first non-fungible token may then be stored at a first blockchain address on a blockchain, and the first portion of the at least one of the first executable instructions or the first data in the first updatable programmable section of the first non-fungible token is subsequently changed to at least one of second executable instructions or second data.

Abstract: Methods and systems described herein improve blockchain storage operations in a variety of environments. A blockchain compression system may determine that a blockchain compression condition associated with a blockchain having a first plurality of blocks has been satisfied. In response, the system compresses the first plurality of blocks using a first hash tree into a first root hash value and stores the first plurality of blocks in a first database. The blockchain compression system generates a first new era genesis block that includes the first root hash value and a first database address of the first database at which the first plurality of blocks are stored. The blockchain compression system stores the blockchain at one or more nodes in a blockchain network. The blockchain includes the first new era genesis block and any previous new era genesis blocks. This may effectively reduce storage requirements for the blockchain, in various embodiments.

Abstract: Novel technical ways of facilitating secured execution of blockchain transactions are presented.

Abstract: Methods and systems described herein may implement blockchain cryptocurrency transactions in a variety of environments. An online transaction processor may provide operations for user activity detection for locking cryptocurrency conversions. The transaction processor may detect used activities for a user online or at a physical location and determine that those activities indicate that the user will engage in electronic transaction processing at an upcoming time. The transaction processor may determine that the user has available cryptocurrency and may want to convert at least a portion of the cryptocurrency to another currency for the electronic transaction processing. Using a cryptocurrency exchange, the transaction processor may determine a price to convert the cryptocurrency to the other currency and may lock that price for a time period for the user. A notification may be transmitted to the user with a user interface element to accept this offer.