Abstract: Systems and methods are provided that authorize blockchain network transactions based on a work requirement. A blockchain network has a plurality of nodes. At least one node of the plurality of nodes is configured to determine whether a token has satisfied a work requirement. The work requirement represents participation of performing work within the blockchain network. The at least one node is further configured to approve a transaction as a function of determining that the work requirement has been satisfied and, to disapprove the transaction as a function of determining that the work requirement has not been satisfied. By enabling the transaction to be approved based on a work requirement, the token, for example, can be authenticated as having an inherent functional value. In this way, the blockchain network or token exchange can attest to the token not being a security, which would be subject to federal securities and regulations.

Abstract: A system and corresponding method exchange a nonfungible token (NFT) via blockchain cross-chain fungible token transfers. The system comprises first and second blockchains. The first blockchain holds the NFT in a first escrow digital wallet. The NFT is available for trade by a seller and is associated with a trade value. The first blockchain monitors a balance of fungible tokens, owned by a buyer, that are transferred from a second blockchain to a second escrow digital wallet of the first blockchain. In response to detecting that the balance monitored represents the trade value, the first blockchain transfers, simultaneously, (i) the NFT from the first escrow digital wallet to a first digital wallet of the first blockchain, the first digital wallet owned by the buyer, and (ii) the balance of fungible tokens from the second escrow digital wallet to a second digital wallet of the second blockchain, the second digital wallet owned by the seller.