This invention discloses a novel system and method for distributing electronic ticketing such that the ticket is verified at the entrance to venues by means of an animation or other human perceptible verifying visual object that is selected by the venue for the specific event. Tins removes the need to use a bar-code scanner on an LCD display of a cell phone or other device and speeds up the rate at which human ticket takers can verify ticket holders.

Systems and methods for transferring value. A method includes posting, by a user device to a blockchain, a deposit transaction comprising a deposit value and conditions and updating, by the user device, a state according to a transaction amount. The method also includes transmitting, by the user device, a state update of the state to a server computer and responsive to transmitting the state update, and receiving, by the user device, a payment complete message comprising a tuple from the server computer. The method also includes verifying, by the user device, the conditions and processing, by the user device, a server deposit transaction on the blockchain in response to verifying.

A method, a computer device, and a non-transitory computer-readable recording medium for preventing an erroneous deposit of cryptocurrency are provided. A method of preventing an erroneous deposit of cryptocurrency includes providing an interface for inputting transaction request information including a target coin and a wallet address; verifying at least one of the target coin and the wallet address using a trading environment of a target exchange corresponding to the transaction request information; and processing a transaction according to the transaction request information based on a verification result.

A digital platform enables 3D printing where the designs are protected from piracy/redistribution. A single board computer (SBC) communicates with a first server and a second server. The SBC requests a unique hardware ID from the first server, which assigns and sends the ID to the SBC. The SBC submits the ID and a secret key to the second server to request registration of a user and a printer, and the second server sends private certs, a client ID, and a unique public identifier to the SBC. The second server also receives and stores 3D print designs through a designer portal, and on-demand displays the designs in a GUI screen. The SBC user may purchase a 3D print design, and the second server, in response, sends an access token to the SBC. The SBC redeems the access token for a selected 3D print, and the second server adjusts geode for the selected 3D design for the particular printer, and streams the adjusted geode to the printer through the SBC, thereby protecting the code from unauthorized user/replication.

A method for verification of a data value via a Merkle root includes: storing, in a memory of a processing server, a Merkle root; receiving at least a data value, a nonce, and a plurality of hash path values; generating a combined value by combining the data value and the nonce; generating a first hash value via application of a hashing algorithm to the combined value; generating a subsequent hash value via application of the hashing algorithm to a combination of the first hash value and a first of the plurality of hash path values; repeating generation of the subsequent hash value using a combination of the next hash path value of the plurality of hash path values and the most recent subsequent hash value; and verifying the data value based on a comparison of the Merkle root and the last generated subsequent hash value.

An example operation may include one or more of receiving a data block for storage on a blockchain from an orderer node, the data block comprising a full-step hash of a storage request and a reduced-step hash of the storage request, performing an approximate hash verification on the data block based on the reduced-step hash of the storage request included in the data block, and in response to a success of the approximate hash verification, committing the data block among a hash-linked chain of data blocks stored within a distributed ledger of a blockchain.

The technology teaches a distributed gaming system, comprising a server-side node configured to administer transactions for a gambling casino, selling and redeeming chips using a private database, and recording transactions on a distributed ledger using crypto-tokens for a house account, with a token vault wallet that has a unique identifier and private key to track transactions. Customer wallets, intermediary accounts and one-way redemption wallets track transactions on the distributed ledger. Client-side nodes accept token purchase messages and transfer tokens in the ledger and record in the database, accept token-to-chip messages from an intermediary account and transfer tokens on the ledger to the redemption wallet to extinguish and record the exchange, accept chip-to-token messages from an intermediary account and transfer tokens from the vault to the customer account and record the exchange, and accept token-to-fiat messages from an intermediary account and transfer tokens to extinguish, and record the exchange.

There is discussed a method of authorising an electronic transaction in which a user device receives a shared secret and a shared secret identifier. Subsequently, on receipt of transaction data from a transaction terminal, the user device calculates a one-way hash of data comprising the shared secret to generate a hash value, generates authentication data comprising the hash value and the shared secret identifier, and transmits the authentication data to the transaction terminal.

The invention provides a secure method for exchanging entities via a blockchain. The invention incorporates tokenisation techniques, and also techniques for embedding metadata in a redeem script of a blockchain transaction. Embodiment(s) provide a method of: generating a first script, the first script comprising: a first set of metadata associated with a first invitation for the exchange of a first entity by a first user, the first set of metadata comprising an indication of the first entity to be offered for exchange and a first location condition for the exchange, a first user public key (P1A) associated with the first user, wherein the first user public key (P1A) is part of an asymmetric cryptographic pair comprising the first user public key (P1A) and a first user private key (V1A). The script may further comprise and a first third-party public key (P1T) associated with a first third-party, wherein the first third-party public key (P1T) is part of an asymmetric cryptographic pair comprising the first third-party public key (P1T) and a first third-party private key (V1T) The method further comprises the steps of hashing the first script to generate a first script hash and publishing the first script and the first script hash on a distributed hash table (DHT).

Example embodiments relate to methods of proving digital assets. The method includes identifying users on an asset transaction platform. The method includes generating a snapshot for each identified user at a first time. Each snapshot includes a user identity and user assets amount for the user at the first time. The user assets amount is a total amount of digital assets held by the user on the asset transaction platform at the first time. The method includes transforming each snapshot into a string combined hash value. Each string combined hash value is generated by hashing one of the snapshots of the user identity and the user assets amount for the first time. The method includes generating a merkle tree. The merkle tree includes a leaf node for each of the string combined hash values. The method includes performing an audit process of the asset transaction platform for the first time.