A method for a protocol in digital asset trading includes step as follow. Trading information is exchanged between the first and the second nodes, in which a first digital currency belonging to the first node and a second digital currency belonging to the second node are expected to be exchanged, and prices of the first and second digital currencies are time-dependent. An atomic swap script and a smart contract are generated. A compensation fee to be paid to the second node by the first node is computed. A redeeming or refunding event is performed in response to the atomic swap script and the smart contract with paying the compensation fee to the second node, in which the compensation fee is dependent on the prices of the first and second digital currencies such that is time-dependent.

A method for signing a new block of a blockchain of a distributed blockchain consensus network (DBCN), comprising a mining computing entity (MCE) and a node computing entity, includes the step of signing and/or encrypting of predefined MCE information by the MCE, using a secret key of a public key/secret key key pair of the MCE to obtain hidden information (HI). The new block is signed by the MCE using the secret key and block information comprising block height information to create a signature for the new block. In a case of at least one further signing of a different block with the respective same block height information by the MCE, reveal information is provided to reveal the HI to the DBCN by another node computing entity of the DBCN when the node computing entity has received two signatures comprising the same corresponding block height information.

A method comprises: receiving, via a processor, an audio content of a first file; generating, via the processor, a first acoustic fingerprint from the audio content; comparing, via the processor, the first acoustic fingerprint against a second acoustic fingerprint stored in a record of a database, wherein the record includes an identifier; identifying, via the processor, a match between the first acoustic fingerprint and the second acoustic fingerprint; accessing, via the processor, the identifier responsive to the match; performing, via the processor, an assignment of a digital token from a first user to a second user responsive to the match, wherein the identifier identifies the second user; and alerting, via the processor, the second user of the assignment.

The disclosed embodiments include a computer-implemented method for performing a token escrow swap on a network of nodes. The method includes placing buy/sell orders through a broker-dealer node and sending signed buy/sell order transactions with cryptocurrency wallets to the token escrow swap node. The method further includes performing a buy-order filling operation by requesting a transfer of currency tokens to the token escrow swap node and receiving the currency tokens via the buyer node. For each sell order, security tokens are transferred to the token escrow swap node via the seller node. The security tokens are sent from the token escrow swap node. For each sell order, the currency tokens are sent to the seller node. The method includes an analogous operation to fill a sell order.

A method of social key recovery for a first communication device supporting blockchain technology with asymmetric cryptographic algorithm is disclosed. The method comprises transmitting a device identity of the first communication to a second communication on the blockchain, performing a verification operation with the second communication device, receiving a message including a verification code of the first communication device and a public key of the second communication device, from the second communication device, wherein the first message is encrypted with a public key of the first communication device, decrypting the message with a private key of the first communication device, to obtain the public key of the second communication device, and transmitting seed phrases encrypted with the public key of the second communication device for restoring a crypto wallet on the blockchain, to the second communication device.

There is provided a processor(s) executing a blockchain smart contract, for: managing a primary reserve of primary tokens and a secondary reserve of secondary tokens, receiving a transaction request, obtaining an external price of the primary token, compute an updated value of the primary reserve according to the external price, in response to the updated total value of primary reserve being unequal to an initial staked value of the primary reserve, adjust primary and secondary dynamic reserve weights, wherein a total value computed by a function of the primary reserve after being increased or decreased by a target amount of primary tokens and using the adjusted primary and secondary dynamic reserve weights, is equal to the initial staked value of the primary reserve, and the total value of the primary reserve is maintained at a predefined ratio to a total value of the secondary reserve, and executing the transaction request.

Systems and methods are disclosed for generating a parts logbook using blockchain technology. The method may include: receiving, by a processor, part information of a part from a first user device; adding, by the processor, a first block including the received part information to a copy of a blockchain database of a blockchain network; verifying, by the processor, the received part information of the part via the blockchain network; when the received part information of the part is verified, generating, by the processor, a parts logbook for the part based on the verified part information of the part; and transferring, by the processor, the generated parts logbook for the part to a second user device for displaying the generated parts logbook on the second user device.

Apparatus and methods are provided for the approximation of two bones, the apparatus including a first anchor that is rotationally driven into a first bone by a second bone anchor, which receives driving torque from a driver tool. After the first anchor is secured in the first bone, the second anchor is disengaged from the first anchor but remains connected to the first anchor by a flexible link of a designed length. The second bone anchor is secured in the second bone and has provisions to be lengthened or shortened to adjust the overall length of the implant, thereby adjusting the approximation between the two bones.

A non-fungible blockchain token (NFT) transferable from wallet to wallet on a blockchain represents ownership of a physical diamond custodied in a secure vault. The NFT can be sold and resold to investors wishing to use the diamond as a store of value. The NFT owner, who may only be known by a blockchain wallet address, can communicate with the custodian, the issuer, auditors, and more by writing signal messages into the blockchain NFT. A diamond custody controller unit at the custodian includes a trusted program module to handle private cryptographic key functions and to output retrieval and shipping instructions when a signal message indicates the NFT owner instructs the custodian to move the diamond to a new custodian. The NFT owner can also write signal messages into the NFT to instruct other parties, such as auditors, to perform services relating to the diamond.

Tokenized assets with associated value are transferred from a designated server to a mobile device. The associated value is removed from the designated server. The tokenized assets are transferred to a first trusted electronic device. The first trusted electronic device is associated with the mobile device. At least a portion of the tokenized assets are transferred to a second trusted electronic device such that the portion of the tokenized assets are only stored on the second trusted electronic device after the transfer. The second electronic device is associated with a second mobile device. The transfer occurs at a time when both the mobile device and the electronic device are offline.