Abstract: An example operation may include one or more of sending, by a node A, a signed transaction TrA to a node B to update a token TKNA on a ledger of a blockchain A, submitting, by the node A, the TrA signed by the node B to the blockchain A, receiving from the node B a signed transaction TrB to create a token TKNB on a ledger of a blockchain B, sending the TrB signed by the node A to the node B to be submitted to the blockchain B, and activating, by the node A, the TrA to update the TKNA by submission of a secret value (x) signed by a private key of the node A to the blockchain A and by submission of a secret value (x) to the blockchain B to activate TKNB.

Abstract: Methods, systems, and computer program products in connection with a system for bidding on multi-modal sub-spaces for e-commerce searches is provided herein. A computer-implemented method includes representing, in an embedding space affiliated with at least one electronic commerce website: (i) images related to one or more bids and (ii) items of text related to the one or more bids, the images and the items of text both coming from one or more bidding entities. Such a method also includes mapping a query to the embedding space based on a comparison of features of the query to (i) the images and (ii) the items of text. Further, such a method additionally includes selecting at least one of the one or more bidding entities based on the mapping, and outputting, to at least one user in response to the query, search results associated with the at least one selected bidding entity.

Abstract: An example operation may include one or more of sending, by a node A, a signed transaction TrA to a node B to update a token TKNA on a ledger of a blockchain A, submitting, by the node A, the TrA signed by the node B to the blockchain A, receiving from the node B a signed transaction TrB to create a token TKNB on a ledger of a blockchain B, sending the TrB signed by the node A to the node B to be submitted to the blockchain B, and activating, by the node A, the TrA to update the TKNA by submission of a secret value (x) signed by a private key of the node A to the blockchain A and by submission of a secret value (x) to the blockchain B to activate TKNB.

Abstract: Methods, systems, and computer program products in connection with a system for bidding on multi-modal sub-spaces for e-commerce searches is provided herein. A computer-implemented method includes representing, in an embedding space affiliated with at least one electronic commerce website: (i) images related to one or more bids and (ii) items of text related to the one or more bids, the images and the items of text both coming from one or more bidding entities. Such a method also includes mapping a query to the embedding space based on a comparison of features of the query to (i) the images and (ii) the items of text. Further, such a method additionally includes selecting at least one of the one or more bidding entities based on the mapping, and outputting, to at least one user in response to the query, search results associated with the at least one selected bidding entity.