Coinbase

Abstract Methods, systems, and devices for data management are described. Techniques described herein may enable a user and a service provider to each obtain a portion of a secret key. For example, the user may generate a user portion of the secret key, encrypt the user portion of the secret key using a public encryption key, and transmit the encryption of the user portion of the secret key to the service provider. The service provider may generate a service provider portion of the secret key, encrypt the service provider portion, and transmit the encryption of the service provider portion of the secret key to the user. The user may recover the user portion of the secret key by retrieving the encryption of the user portion of the secret key from the service provider, or may generate the full secret key by decrypting the service provider portion of the secret key.

Abstract In some embodiments, in connection with an API request to transact with an entity, a first conversion rate associated with a first time may be determined, where the first conversion rate is a current conversion rate for an on-chain asset at the first time; Based on a monitoring of a blockchain, a receipt of the on-chain asset at a second blockchain address from a first blockchain address associated with the user may be detected on the blockchain. In response to the detection, the on-chain asset may be converted to an off-chain asset at a second time associated with a second conversion rate, the second conversion rate being the current conversion rate for the on-chain asset at the second time. An amount of the off-chain asset may be transmitted to the entity, where the amount of the off-chain asset sent to the entity is based on the first conversion rate.

Abstract Methods, systems, and devices for data management are described. A custodial token platform may (e.g., via a data synchronizer or a server) route requests received from one or more client applications to one or more compute clusters that execute a set of blockchain nodes for supporting the blockchain network. The platform may assign cookies to the client applications such that subsequent requests from a same client application are routed to the correct compute cluster such as to avoid or limit data synchronization errors. The initial routing may be based on one or more routing factors. The custodial token platform may additionally support an external node validator which validates and caches data from multiple external blockchain data service providers, and the cached data may be used to service blockchain data requests. An inline data validation procedure may be performed if a request results in a cache miss.

Abstract Methods, systems, and devices for data management are described. A wallet application may display one or more messages sent via a messaging service from a second user at a first user interface associated with a first user. The first user interface may receive one or more inputs to initiate a process for sending a crypto token to the second blockchain address of the second user. The wallet application may broadcast a message configured to transfer the crypto token from the first blockchain address to the second blockchain address via a blockchain network associated with the crypto token. The wallet application may update the first user interface to indicate the broadcasted message via the blockchain network. As such, users of the wallet application may transfer crypto tokens from a blockchain address via a blockchain network while, in a same user interface, sending and receiving messages via a messaging service.

Abstract To support token recovery at a token management system, a custodial token platform may receive via a user interface, an identifier of a first blockchain transaction that is associated with a crypto token that is not supported by the custodial token platform and that is to be recovered from an inbound address of the custodial token platform. Information associated with the first blockchain transaction may be displayed, and the user interface may receive an indication of a user address associated with a user and that is external to the custodial token platform. The custodial token platform may verify the user address using a signed message and may broadcast, subsequent to verifying that the message is signed, a second blockchain transaction configured to transfer the crypto token from the inbound address to the user address.

Abstract A custodial token platform may implement wallet orchestration techniques. For example, the custodial token platform may process a corpus of transaction data associated with a custodial token platform. The data may indicate movements of a crypto token between outbound addresses of the custodial token platform and a cold address managed by the custodial token platform. The custodial token platform may simulate movements of the crypto token between the outbound addresses and the cold address using a plurality of balance configurations that define one or more balance thresholds for the outbound addresses and determine a balance configuration for the outbound address and the cold address based on the simulation. The custodial token platform may then broadcast one or more transactions that are configured to move the crypto token between the outbound addresses and the cold address based at least in part on the determined balance configuration.

Abstract Methods and systems use a second dataset comprising independently validated data based on labeled blockchain operations previously processed through the blockchain network. The use of the second dataset in conjunction with the dataset comprising labeled blockchain characteristics data received from a plurality of sources provides a comprehensive input for a machine learning model to identify and label suspicious blockchain operations. By doing so, the system mitigates fraudulent, criminal, or suspicious transactions. For example, the system may send an alert to a user if a behavior type is deemed a high risk by the machine learning model; the system may furthermore hold the funds associated with the blockchain operation in a separate account while the transaction is manually reviewed. Thus, the system may generate alerts to notify a user of a suspicious behavior type or suspicious blockchain operation, divert funds associated with the transaction, and conduct a manual review of suspicious blockchain operations.

Abstract A custodial token platform may implement wallet orchestration techniques. For example, the custodial token platform may monitor an inbound address that is associated with a user of the custodial token platform and configured to receive a plurality of different inbound transactions. The custodial token platform may also identify one or more inbound transactions that indicate transfer of a crypto token from a first external user address to the inbound address controlled by the custodial token platform and broadcast, based on a ratio between addresses a second transaction configured to transfer the amount of the crypto token from the inbound address to the outbound address that is controlled by the custodial token platform. The custodial token platform may also broadcast a withdrawal transaction configured to transfer an amount of the crypto token attributed to the outbound address to a second user address external to the custodial token platform.