CN109784886B - Custodable limited circulation dual account model - Google Patents
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Abstract
The dual-account model which can be monitored and controlled and limits circulation provides a centralized way to issue and exchange token, the circulation of the token in the system is limited, and the country can easily monitor and control, so that the risks of stir-frying and speculation are eliminated, the incentive mechanism of the token is used for ensuring, the block chain is open and transparent, the essence of the token is exerted, the dregs are removed, and the basis of large-scale application landing is ensured. The centralized platform controls the issuance of the tokens, the exchange records of the RMB and the tokens can be inquired on a chain, and the auditing nodes have auditing rights for the operations of the tokens on the chain and under the chain. The token of the consumption account is used for the consumption of products on the chain, and the token of the equity account is used for the incentive on the chain to exchange the transaction income on the chain. Tokens cannot be circulated between accounts, thereby ensuring that tokens can only be used for consumption and the rights and interests are accounted, thereby eliminating the risk of stir-frying and gambling. Automatic settlement of transactions is achieved through smart contracts.
Description
Technical Field
The invention provides a supervised circulation-limiting double-account model, and realizes a positive incentive accreditation economic solution which is stable on a block chain, limits stir-frying and speculation.
Background
The existing public chain technology and the generated digital currency are realized by a decentralized algorithm without the supervision of any national government department and related institutions, and the value of the currency is completely established by consensus.
For example: bitcoin according to the algorithm, the total amount of money is limited to 2100 million, the money is generated by digging the mine by using the hash calculation power of the nodes, a block is generated every 10 minutes, each block is awarded 50 btc from the beginning, and then the half is reduced every four years. Since the bit currency is the first digital currency, and the total amount is limited, completely decentralized, and as long as the bit currency network exists, the personal assets never disappear, so that the bit currency has a good collection value, called digital gold, but the value of the bit currency itself fluctuates greatly, and it is impossible to use the bit currency for large-scale application.
Eth is also produced by mining and Gas is consumed to perform intelligent contracts, and the user is also required to spend money when using the ether house application. Also eth is a very price-fluctuating and therefore lacks the basis for landing on a large scale.
In summary, if the blockchain is to be applied to a large-scale ground, the existing public-link general certification economic model is unreasonable, and a digital currency with a manageable and stable price needs to be circulated in the blockchain application.
The existing widely used stable coins are mainly of the legal asset mortgage type, and represent: tether (USDT).
The USDT issued by Tether corporation as a precedent for the stable currency, the virtual currency anchored with US dollars 1:1. In other words, whenever a user purchases a USDT's voucher, the Tether company will add a dollar reserve of funds to their account. When the user needs to exchange dollars, the Tether will destroy the corresponding pass certificate and pay 5% of the commission charge. The method is simple and easy to understand and the flow is simple. The mortgage assets are not on the blockchain as valid legal currency, avoiding potential hacking.
The internal USDT is composed of three layers:
the initial layer is the bitcoin public chain, the USDT itself is based on digital assets published over the bitcoin public chain by the Omni protocol.
The second Layer is Omni Layer protocol Omni protocol is capable of generating and destroying digital currency (USDT) on the bitcoin public chain. Info and Omnicore APIs enable tracking and reporting of transactions per USDT. At the same time, the agreement ensures that the USDT can be stored and transacted in a secure anonymous encryption environment through Omni Wallet, an open source browser network Wallet.
Finally, tether Limited is an entity company of Tether that receives legal currency, i.e., U.S. dollars, and then issues USDTs for the U.S. dollar mortgage. When the user withdraws the collateral, the teter destroys the corresponding USDT. The Tether keeps all legal currency mortgaged in the circulating USDT. And publishes all audit results including Proof of Reserves.
Proof of of resources (PoR) is a consensus algorithm. Each USDT corresponds to one dollar in the limit. This means that the number of USDTs in the system should be exactly the same as the USD in the Tether account. Since USDT is a digital currency put on the bitcoin public chain. Each transaction can be tracked. Therefore, the total amount of the USDT circulating at any time can be checked. While Tether will send audit report periodically to inform user of the amount in reserve. All transaction histories, circulating USDT, can be looked up from omnihost.
However, at the same time as addressing the risk of floating, the sacrifice is the decentralization that cryptocurrency would have had. Tether, a centralized custodian of dollars, may present the same problems as traditional financial institutions. Because the information is not transparent, the dark box operation and the excessive sending are difficult to avoid, and whether the Tether book has the equivalent dollar is rather controversial.
The USDT is realized in a centralized mode as the stable currency, and due to the fact that good supervision is not available, the USDT cannot be abused. The USDT has good liquidity, the price of the USDT is easy to be controlled by a speculator, so that large fluctuation is generated, and the maximum fluctuation of the USDT is more than 20%. The USDT as a digital currency can be circulated without supervision, which is not feasible in China.
Disclosure of Invention
The invention aims to provide a supervised circulation-limiting double-account model, and realizes a synusia economic solution which is stable on a block chain, limits stir-frying and speculation and has positive excitation.
The technical scheme adopted by the invention is as follows.
The improvement of the dual account model capable of monitoring and limiting circulation is that the model comprises a user, a wallet, a block chain and a centralized platform;
the wallet creates a consumption account and a equity account of the user, the consumption account for consumption in the blockchain, the equity account storing earnings obtained in the blockchain; the consumption account and the equity account hold tokens only; the equity accounts of the users can transfer money to own consumption accounts, but the consumption accounts cannot transfer money to the equity accounts, and all accounts between the two users cannot transfer money to each other;
the centralized platform provides goods or services and provides docking with the payment platform to realize exchange between legal currency and tokens;
the users call the online trading intelligent contract through the consumption account, the trading intelligent contract defines the commodity or service price, the division of each user and the centralized platform is agreed, and the profits generated through consumption are directly distributed to the rights and interests accounts of the participants through the trading intelligent contract;
after receiving legal currency paid by a payment platform, the centralized platform calls a token management contract on the block chain to issue a token, the token is sent to a consumption account of a user wallet, the total amount of the token is increased, and the block chain stores a payment bill, a payment amount, the token amount, a consumption account address and the total amount of the token; when a user submits through a rights and interests account, a token management intelligent contract is called, the token management intelligent contract records the number of money submissions of a presenter, the rights and interests account of the presenter and the address of an account outside a submitting chain, the presented token is locked, a centralized platform is informed to call a payment platform, legal money is transferred to the address of the account of the off-chain payment platform, the payment platform calls an interface provided by the centralized platform to inform a payment result, and the centralized platform calls the token management contract to destroy the presented token and reduce the total amount of the token.
Before executing the transaction intelligent contract, the bottom-layer chain checks whether a caller is a legal consumption account and whether the consumption account has enough consumption tokens or not, the calling operation of the intelligent contract is continued if the conditions are met, and otherwise, the transaction execution is terminated;
before the intelligent contract for token management is executed to embody the transaction, the bottom-layer chain checks whether a caller is a legal interest account and whether the caller has enough withdrawal tokens, the calling operation of the intelligent contract is continued if the conditions are met, and otherwise, the transaction execution is terminated.
The block chain is provided with the supervision node, all data on the chain are synchronized, and all data on the inquiry chain, even if being privacy data, also inquire data of off-chain transactions in the centralized server.
When a user creates a wallet account, a program transparently creates two public and private key pairs, wherein one public and private key is a consumption account, and the other public and private key is a rights and interests account;
the user sets a transaction password, generates a symmetric key through the transaction password, and then encrypts private keys of the consumption account and the rights and interests account by using the symmetric key.
When a user creates a wallet account, a program transparently creates two public and private key pairs, wherein one public and private key is a consumption account, and the other public and private key is a rights and interests account;
the user sets a transaction password, generates a symmetric key through the transaction password, and then encrypts private keys of the consumption account and the rights and interests account by using the symmetric key.
The method comprises the steps that a public key and a private key of a wallet account are managed by a server, a transaction password is salted, the salt value of each user is different, and then the salt value is encrypted and stored in a database.
The centralized platform controls the issuance of the token, the exchange records of the RMB and the token can be inquired on a chain, and the auditing node has auditing rights for the operation of the token on the chain and under the chain. The token of the consumption account is used for the consumption of products on the chain, and the token of the rights and interests account is used for the incentive on the chain to exchange the transaction income on the chain. No tokens can be circulated between accounts, thereby ensuring that tokens can only be used for consumption and the rights and interests are kept, and eliminating the risk of stir-frying and gambling. Automatic settlement of transactions is achieved through smart contracts.
Drawings
Fig. 1 is a flow chart of wallet account generation in the present invention.
Figure 2 is a flow diagram of a fiat currency purchasing token.
Figure 3 is a primary interface, notification event, and storage model for a token management smart contract.
Figure 4 token cash-out fiat currency flow diagram.
FIG. 5 is a consumption transaction contract flow diagram.
FIG. 6 is a model of the primary interface, notification events, and storage of consumption transaction contracts.
Detailed Description
The invention includes a user, a wallet program, a blockchain, and a centralized platform.
1. Wallet program
When a user creates a wallet account, a program transparently creates two public and private key pairs, wherein one public and private key is a consumption account, and the other public and private key is a rights and interests account.
The consumption account is only for consumption purposes, can be reward points sent by the system, can also be tokens and the like which are transferred from the equity account to be used for consumption purposes, and can only consume, cannot be transferred to the equity account and cannot be presented.
The equity account is the income obtained by the user selling the product or service, the user calls the on-chain transaction intelligent contract through the equity account, and the transaction intelligent contract deposits the token obtained by the user into the equity account according to the defined selling price and dividing proportion. Tokens for equity accounts may be transferred to a user's pay bank, weChat or bank account through a centralized platform.
The user sets a transaction password, generates a symmetric key through the transaction password, and then encrypts private keys of the consumption account and the rights and interests account by using the symmetric key, so that the security of the private keys is ensured. The transaction password is not stored, and the symmetric key is dynamically calculated through a program according to the transaction password when the transaction is needed, so that the encrypted private key is decrypted.
If the account is the public key and the private key of the server-side escrow wallet account, the transaction password needs to be salted, the salt value of each user is different, and then the salt value is encrypted and stored in the database.
The wallet program provides import and export functions for public and private keys.
The user can see the token amount of the consumption account and the interest account at any time through the wallet program.
The wallet program is linked with the block chain, and the consumption account and the rights and interests account are updated at any time.
Please refer to fig. 1 for the above wallet account generation process.
2. Centralized platform
The centralized platform provides products or services and provides docking with a payment platform, and the centralized platform is accessed to a Software Development Kit (SDK) provided by the payment platform, such as a Payment treasure, a WeChat or a bank account. The centralized platform can receive and sell the corresponding token by the legal currency (hereinafter referred to as legal currency) paid by the user through the treasure payment, the WeChat or the bank account, and the token can be consumed and used in the block chain. The centralized platform provides for the consumption of the product or service or the sale of the product or service to obtain revenue. The transaction behavior in the centralized platform is realized and supervised through corresponding intelligent contracts on the blockchain, and the purposes of non-tampering and safety are achieved.
In order to realize the function, the centralized platform comprises a centralized database for storing various data and transactions, and a conversion program and a cash withdrawal monitoring program for calling corresponding intelligent contracts on the block chain, wherein the conversion program receives the notice that the payment of the user is successful and informs a server, the token of the block chain is called to manage the intelligent contract issuing, the total amount of the token is increased, and related data is recorded on the chain. The user withdraws money through the equity account, the token of the equity account of the user is transferred into the token to manage intelligent contract security, and the token management intelligent contract records the withdrawal amount of the withdrawal person, the equity account of the withdrawal person and the account address outside the withdrawal chain. And then notifying a cash withdrawal monitoring program outside the chain through the event, wherein the cash withdrawal monitoring program stamps legal money into an account outside the chain of the corresponding cash withdrawer, and after receiving the account arrival notification of the WeChat or the Payment treasure, the program outside the chain calls a token management intelligent contract to destroy the corresponding token.
The user consumes or earns money in a centralized platform using tokens. The revenue obtained by the user may be extracted from the centralized platform as legal currency.
The centralized platform is responsible for providing butt joint with a payment treasure, weChat or bank account, and realizes the transfer of the RMB.
The centralized platform serves as a bridge for exchanging RMB to the token and the token to the RMB.
3. Block chain (token chain)
The bottom chain forbids the circulation of the token between the accounts through the code, and cancels the Transfer operation. Namely: and forbidding circulation between the consumption accounts, the equity accounts and the consumption accounts to the equity accounts between the two users. Only principal entitlement accounts are allowed to circulate to principal consumption accounts.
The block chain runs transaction intelligent contracts, token management intelligent contracts and currency issuing intelligent contracts.
The user calls the intelligent contract on the transaction chain through the consumption account, the bottom chain checks whether the caller is a legal consumption account and whether the consumption account has enough consumption tokens, the calling operation of the intelligent contract is continued if the conditions are met, and otherwise, the transaction execution is stopped.
The trade intelligent contract defines commodity price, share, and the like, contracts each user and the share of the platform, and the profit generated by the trade intelligent contract is directly distributed to the right and interest account of the participant through the profit generated by consumption, please refer to fig. 5, and the main interface, the notification event and the storage model of the consumption trade contract refer to fig. 6.
On one hand, the intelligent token management contract receives information of payment transaction completion transmitted by the centralized platform, generates tokens and increases the total amount of the tokens; and on the other hand, the tokens in the cash withdrawal equity account are paid to the payment treasure, the WeChat or the bank account through the centralized platform.
The supervision node is arranged to synchronize all data on the chain, the supervision node can inquire all data on the chain even if the data are privacy data, and the supervision node can also inquire data of transactions out of the chain in the centralized server. When the user purchases, the WeChat or Payment treasure account of the user plays money to the corresponding account of the platform to replace the token. When the user presents, the WeChat or Payment bank account of the platform puts the corresponding legal currency into the account corresponding to the user. These operation supervision nodes can also query the centralized server for historical transaction records.
Based on the above architecture, the process of purchasing tokens by legal currency and the process of exchanging tokens for the legal currency are introduced, and the key is completed by a centralized platform, a wallet program and a token management intelligent contract.
1. A fiat currency purchase token:
the user purchases the token from the centralized platform through the WeChat, the Payment treasure or the bank account, and the centralized platform calls the token management intelligent contract on the chain after receiving the payment bill. The purchase process is shown in FIG. 4. The main interfaces, notification events, storage models of the token management smart contract are shown in figure 3.
Calling parameters: transaction billing information (bill number, amount of consumption, product consumed, etc.), legal currency amount, amount of tokens, purchaser's consumption account address (address on blockchain).
The caller of the token management smart contract can only be a signed transaction by the platform wallet account.
The token management intelligent contract records transaction billing information.
The token management intelligence contracts increase the number of tokens, recording the total number of tokens circulated on the chain.
The coin-freed intelligence contract sends the purchased tokens to the purchaser's consumption account.
The amount of total tokens increases. And a database on the chain can store related data.
The steps are monitored by the monitoring node.
2. Token exchange for legal currency:
the user invokes the intelligent contract for token management, the underlying chain checks whether the caller is a legitimate equity account and has enough cash-up tokens, and continues the invoking operation of the intelligent contract if the conditions are met, otherwise, the transaction execution is terminated, as shown in fig. 4.
Calling parameters: cash-up token amount, weChat or Payment account number address or bank account information.
The token of the user interest account is transferred into a token management intelligent contract to be kept, and the token management intelligent contract records the withdrawal amount of the cashing person, the interest account of the cashing person and the account address outside the cashing chain. The method comprises the steps of locking a token for cash withdrawal, informing a centralized platform to call an SDK (security data Key) provided by a payment platform, then informing an off-chain cash withdrawal monitoring program through an event, printing legal currency to an off-chain account of a corresponding cash drawer by the cash withdrawal monitoring program, calling a token management intelligent contract by the off-chain program after receiving an account arrival notice of WeChat or a payment treasure, destroying the corresponding token, calling a payment result by the payment platform through an interface provided by the centralized platform, calling the token management contract by the centralized platform, destroying the cash withdrawn token and reducing the total amount of the token. Calling parameters: billing information, legal monetary amount, token amount, cash drawer equity account address. A 1% token fee is charged. The token is issued and exchanged in a centralized mode, the circulation of the token in the system is limited, and the state can easily supervise, so that the risks of frying and speculating are eliminated, the incentive mechanism of the token is used for ensuring, a block chain public and transparent value system is realized, the essence of the token is exerted, the dregs are removed, and the basis of large-scale application landing is ensured.
The centralized platform controls the issuance of the tokens, the exchange records of the RMB and the tokens can be inquired on a chain, and the auditing node has auditing rights for the operation of the tokens on the chain and under the chain. The token of the consumption account is used for the consumption of products on the chain, and the token of the equity account is used for the incentive on the chain to exchange the transaction income on the chain. Tokens cannot be circulated between accounts, thereby ensuring that tokens can only be used for consumption and the rights and interests are accounted, thereby eliminating the risk of stir-frying and gambling. Automatic settlement of transactions is achieved through smart contracts.
Taking block chaining + music copyright as an example:
1. the copyright platform has the right to uniquely issue and redeem musical currency.
2. The user who buys the copyright right of use buys the RMB to the copyright platform through the payment treasured and buys the music coin, and the payment bill record is as purchasing the deposit certificate on the chain. The purchased music currency is deposited into a consumption account.
3. The user can use the music coin of the consumption account to purchase the use right of the music copyright on the chain, the use right is realized through an intelligent contract, the intelligent contract stores the dividend proportion of a writer and a copyright platform, the profit is automatically distributed during purchase transaction, and the music coin of the profit is stored in the intelligent contract. The beneficiary needs to extract the profits in the intelligent contract into the own equity account. The intelligent contract ensures that non-profit persons can not extract the profits of the non-profit persons. The user can exchange the music token in the own equity account with the money on the copyright platform, the exchange record is also recorded on the chain as a deposit certificate, and the exchange needs to collect 1 percent of commission charge which is settled by the token. And the exchanged music currency is to be destroyed on the chain.
4. The third party regulator has a completely transparent check right for the transaction operation on the chain. It also has completely transparent inspection right for RMB and music currency to operate under the chain when they are exchanged mutually.
The circulation of the music currency is limited between the accounts on the chain through the underlying technology. The music coin can only consume or withdraw the rights and interests through the intelligent contract. The on-chain account can only circulate (buy and cash out) music coins with the platform account.
Claims (6)
1. The dual-account model capable of being supervised and limiting circulation is characterized by comprising a user, a wallet, a block chain and a centralized platform;
the wallet creates a consumption account and a equity account of the user, the consumption account for consumption in the blockchain, the equity account storing earnings obtained in the blockchain; the consumption account and the equity account hold tokens only; the equity account of the user can transfer money to the own consumption account, but the consumption account cannot transfer money to the equity account, and all accounts between the two users cannot transfer money to each other;
the centralized platform provides goods or services and provides docking with the payment platform to realize exchange between legal currency and tokens;
the users call the online trading intelligent contract through the consumption account, the trading intelligent contract defines the commodity or service price, the division of each user and the centralized platform is agreed, and the profits generated through consumption are directly distributed to the equity accounts of the participants through the trading intelligent contract;
after receiving legal currency paid by a payment platform, the centralized platform calls a token management contract on the block chain to issue a token, the token is sent to a consumption account of a user wallet, the total amount of the token is increased, and the block chain stores a payment bill, a payment amount, the token amount, a consumption account address and the total amount of the token; when a user submits through a rights and interests account, a token management intelligent contract is called, the token management intelligent contract records the number of money submitted by a presenter, the rights and interests account of the presenter and the address of an account outside a cash submitting chain, the presented token is locked, a centralized platform is informed to call a payment platform, legal money is transferred to the address of the account of an off-chain payment platform, an interface provided by the payment platform is called back to the centralized platform to inform a payment result, the centralized platform calls a token management contract, the presented token is destroyed, and the total amount of the token is reduced.
2. The administrable, circulation-limiting, dual-account model of claim 1, wherein:
before executing the transaction intelligent contract, the bottom-layer chain checks whether a caller is a legal consumption account and whether the consumption account has enough consumption tokens, the calling operation of the intelligent contract is continued if the conditions are met, otherwise, the transaction execution is terminated;
before the intelligent contract for token management is executed to embody the transaction, the bottom-layer chain checks whether a caller is a legal interest account and whether the caller has enough withdrawal tokens, the calling operation of the intelligent contract is continued if the conditions are met, and otherwise, the transaction execution is terminated.
3. The administrable, circulation-restricted, dual-account model of claim 1 or 2, wherein:
and a supervision node is arranged on the block chain, all data on the synchronous chain are synchronized, and all data on the inquiry chain, even if being privacy data, also inquire data of off-chain transactions in the centralized server.
4. The administrable, circulation-restricted, dual-account model of claim 1 or 2, wherein: when a user creates a wallet account, a program transparently creates two public and private key pairs, wherein one public and private key is a consumption account, and the other public and private key is a rights and interests account;
the user sets a transaction password, a symmetric key is generated through the transaction password, and then the private keys of the consumption account and the rights and interests account are encrypted through the symmetric key.
5. The administrable, circulation-limiting, dual-account model of claim 3, wherein: when a user creates a wallet account, a program transparently creates two public and private key pairs, wherein one public and private key is a consumption account, and the other public and private key is a rights and interests account;
the user sets a transaction password, generates a symmetric key through the transaction password, and then encrypts private keys of the consumption account and the rights and interests account by using the symmetric key.
6. The administrable, circulation-restricted, dual-account model of claim 1, 2, or 5, wherein: the server side hosts a public key and a private key of a wallet account, salt addition processing is carried out on a transaction password, the salt value of each user is different, and then the salt value is encrypted and stored in a database.
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| CN110428260A (en) * | 2019-07-31 | 2019-11-08 | 北京米弘科技有限公司 | The account model of block chain |
| CN110782237A (en) * | 2019-10-22 | 2020-02-11 | 深圳前海乐寻坊区块链科技有限公司 | Community incentive method, device and equipment based on double certificates and storage medium |
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| CN111813855A (en) * | 2020-06-22 | 2020-10-23 | 上海申铁信息工程有限公司 | Asset transaction system and device based on block chain intelligent contract |
| CN113034148B (en) * | 2020-07-03 | 2022-05-17 | 北京天德科技有限公司 | Digital legal currency processing method based on block chain token and account book double authentication |
| CN113888290A (en) * | 2021-12-08 | 2022-01-04 | 北京雁翎网卫智能科技有限公司 | Online course transaction method and system based on block chain intelligent contract |
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