Methods and systems for digital asset transaction

Abstract

Provided is a method for matching orders of digital assets. The method comprising: receiving multiple orders of digital asset from multiple addresses on a distributed ledger; and determining in a server that the orders are matched when the orders form a loop.

What is claimed is: 
     
         1 . A method for matching orders of digital assets, the method comprising:
 receiving n orders of digital asset from n addresses on a distributed ledger, wherein n is an integer of at least 2, and wherein the ith order (1≤i≤n) is received from the ith address and comprises
 a type of an ith sell-out digital asset, 
 an amount of the ith sell-out digital asset, 
 a type of an ith buy-in digital asset, 
 an amount of the ith buy-in digital asset; 
   determining in a server that
 the type of the ith buy-in digital asset is the same as the type of the (i+1)th sell-out digital asset (1≤i≤(n−1)), 
 the type of the nth buy-in digital asset is the same as the type of the first sell-out digital asset, and 
 Π i=1   n  r i ≥1, wherein r i  means the ratio between the amount of the ith sell-out digital asset and the amount of the ith buy-in digital asset; and 
   determining in the server that the n orders are matched.   
     
     
         2 . The method of  claim 1 , wherein at least one of the sell-out digital assets is a cryptocurrency. 
     
     
         3 . The method of  claim 1 , wherein the distributed ledger is Bitcoin, Ethereum, Bitcoin Cash, Cardano, Stellar, NEO, Qtum, EOS, IOTA, Monero or BitShares. 
     
     
         4 . The method of  claim 1 , wherein the ith order comprises a digital signature of the ith address. 
     
     
         5 . The method of  claim 1 , wherein the distributed ledger comprises a smart contract. 
     
     
         6 . The method of  claim 5 , further comprising sending a transaction to the smart contract on the distributed ledger. 
     
     
         7 . The method of  claim 6 , wherein the transaction comprises digital signatures of each of the n addresses and a signature of the server. 
     
     
         8 . The method of  claim 7 , wherein the distributed ledger, after receiving the smart contract, determines that each of the n addresses is not overspending. 
     
     
         9 . The method of  claim 8 , wherein the distributed ledger, after determining that each of the n addresses is not overspending, completes the transaction according to the n orders. 
     
     
         10 . A non-transitory readable storage medium including instructions, executable by a processor in a terminal, for matching orders of digital assets, the method comprising:
 receiving n orders of digital asset from n addresses on a distributed ledger, wherein n is an integer of at least 2, and wherein the ith order (1≤i≤n) is received from the ith address and comprises
 a type of an ith sell-out digital asset, 
 an amount of the ith sell-out digital asset, 
 a type of an ith buy-in digital asset, 
 an amount of the ith buy-in digital asset; 
   determining in a server that
 the type of the ith buy-in digital asset is the same as the type of the (i+1)th sell-out digital asset (1≤i≤(n−1)), 
 the type of the nth buy-in digital asset is the same as the type of the first sell-out digital asset, and 
 Π i=1   n  r i ≥1, wherein r i  means the ratio between the amount of the ith sell-out digital asset and the amount of the ith buy-in digital asset; and 
   
       determining in the server that the n orders are matched. 
     
     
         11 . The non-transitory readable storage medium of  claim 10 , wherein at least one of the sell-out digital assets is a cryptocurrency. 
     
     
         12 . The non-transitory readable storage medium of  claim 10 , wherein the distributed ledger is Bitcoin, Ethereum, Bitcoin Cash, Cardano, Stellar, NEO, Qtum, EOS, IOTA, Monero or BitShares. 
     
     
         13 . The non-transitory readable storage medium of  claim 10 , wherein the ith order comprises a digital signature of the ith address. 
     
     
         14 . The non-transitory readable storage medium of  claim 10 , wherein the method further comprises generating a smart contract. 
     
     
         15 . The non-transitory readable storage medium of  claim 14 , wherein the smart contract comprises digital signatures of each of the n addresses and a signature of the server. 
     
     
         16 . The non-transitory readable storage medium of  claim 14 , further comprising sending a transaction to the smart contract on the distributed ledger. 
     
     
         17 . The non-transitory readable storage medium of  claim 16 , wherein the distributed ledger, after receiving the smart contract, determines that each of the n addresses is not overspending. 
     
     
         18 . The non-transitory readable storage medium of  claim 8 , wherein the distributed ledger, after determining that each of the n addresses is not overspending, completes the transaction according to the n orders. 
     
     
         19 . A method for exchanging digital assets, the method comprising:
 receiving a smart contract from a server, wherein the server generates the smart contract via a method comprising:
 receiving n orders of digital asset from n addresses on a distributed ledger, wherein n is an integer of at least 2, and wherein the ith order (1≤i≤n) is received from the ith address and comprises
 a type of an ith sell-out digital asset, 
 an amount of the ith sell-out digital asset, 
 a type of an ith buy-in digital asset, 
 an amount of the ith buy-in digital asset, 
 
 determining that
 the type of the ith buy-in digital asset is the same as the type of the (i+1)th sell-out digital asset (1≤i≤(n−1)), 
 the type of the nth buy-in digital asset is the same as the type of the first sell-out digital asset, and 
 Π i=1   n  r i ≥1, wherein r i  means the ratio between the amount of the ith sell-out digital asset and the amount of the ith buy-in digital asset, 
 
 determining that the n orders are matched, and 
 generating the smart contract; 
   determining that each of the n addresses is not overspending; and   completing the transaction according to the n orders.   
     
     
         20 . The method of  claim 19 , wherein at least one of the sell-out digital assets is a cryptocurrency. 
     
     
         21 . The method of  claim 19 , wherein the distributed ledger is Bitcoin, Ethereum, Bitcoin Cash, Cardano, Stellar, NEO, Qtum, EOS, IOTA, Monero or BitShares. 
     
     
         22 . The method of  claim 19 , wherein the ith order comprises a digital signature of the ith address. 
     
     
         23 . The method of  claim 19 , wherein the smart contract comprises digital signatures of each of the n addresses and a signature of the server.