CN114358768A - Carbon emission right trading method based on NFT - Google Patents
Carbon emission right trading method based on NFT Download PDFInfo
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Abstract
The invention relates to the technical field of information, in particular to a carbon emission right trading method based on NFT, which comprises the following steps: the enterprise registers to a director, uploads production data and obtains an initial carbon emission right distributed by the director; the method comprises the steps that a host organization generates an NFT and generates an issuing transaction information uploading block chain which transfers the NFT to an enterprise virtual account; after receiving purchase requests of other enterprises and funds, the enterprise generates transaction information which is transferred to a virtual account of the purchasing enterprise on the block chain corresponding to the NFT and uploads the transaction information to the block chain for storage; and the host organization is provided with a verification account on the blockchain, when the enterprise verifies and sells the carbon emission right to perform, the NFT with the carbon emission right amount sum in accordance with the carbon emission amount determined by the host organization is transferred to the verification account, and corresponding verification and selling transaction information is generated and uploaded to the blockchain for storage. The substantial effects of the invention are as follows: the authenticity of carbon emission right trading is ensured, and the regulation effect of the market is enhanced.
Description
Technical Field
The invention relates to the technical field of information, in particular to a carbon emission right trading method based on NFT.
Background
With the increase of the greenhouse effect and the environmental change and climate change caused by global warming, the life of human beings is more and more obviously influenced. Saving energy and reducing carbon emissions have become common knowledge in human society. In addition to using new technologies, economic means for controlling carbon emissions have become important and widely implemented in emission reduction measures. For example, the emission index of carbon dioxide is distributed to each production enterprise, and the annual carbon emission of the enterprise cannot exceed the distributed index, namely the carbon emission cannot exceed the carbon emission right. But the distribution of the metrics is difficult to balance completely and to meet the actual situation. And thus, the enterprises with insufficient carbon emission rights need to purchase the carbon emission rights from the market. Therefore, the trading scheme of carbon emission rights becomes a problem which needs to be solved urgently at present.
For example, chinese patent CN111047303A, published 2020, 4 and 21, discloses a carbon emission right transaction settlement method, which comprises: acquiring fund settlement instruction information and position taking settlement instruction information; carrying out fund transfer treatment on the carbon emission right registration account according to the fund settlement instruction information to obtain fund balance information; carrying out position taking transfer processing on a carbon emission right registration account according to the position taking settlement instruction information to obtain position taking balance information; and performing settlement analysis processing on the position holding balance information and the fund balance information to obtain a settlement analysis result. After the carbon emission right is acquired and registered, the fund balance information and the position holding balance information after the account transaction are registered and registered, and then clearing and settlement analysis processing is carried out on the fund balance information and the position holding balance information through the day-end clearing information in the transaction system, so that a clearing and settlement analysis result is finally obtained, the clearing and settlement method for the carbon emission transaction is realized, and the reliability of the carbon emission right transaction is effectively improved. The technical scheme only provides a solution for settling the carbon emission right transaction, but cannot solve the problems of authenticity verification and transaction tracing existing in the carbon emission right transaction.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problem that a carbon emission right trading scheme which is convenient to trace and can guarantee authenticity is lacked at present. The carbon emission right transaction method based on the NFT is provided, and authenticity and traceability of carbon emission right transaction are achieved by means of heterogeneity of the NFT and authenticity and transparency of a block chain.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method of NFT-based carbon emission rights trading, comprising: the enterprise registers to a director, uploads production data and obtains an initial carbon emission right distributed by the director; the method comprises the steps that a host organization generates NFT and generates an issuing transaction information uploading block chain which transfers the NFT to an enterprise virtual account, wherein the issuing transaction information comprises the NFT, a transfer-out virtual account, a transfer-in virtual account, a timestamp, a carbon emission right amount and an issuing signature, the issuing signature is a signature of a private key of the host organization on an issuing transaction hash value, and the issuing transaction hash value is a hash value of the NFT, the transfer-in virtual account, the timestamp and the carbon emission right amount; after receiving purchase requests of other enterprises and funds, the enterprise generates transaction information which is transferred to a virtual account of the purchasing enterprise on the block chain corresponding to the NFT and uploads the transaction information to the block chain for storage; and the host organization is provided with a verification account on the blockchain, when the enterprise verifies and sells the carbon emission right to perform, the NFT with the carbon emission right amount sum in accordance with the carbon emission amount determined by the host organization is transferred to the verification account, and corresponding verification and selling transaction information is generated and uploaded to the blockchain for storage.
Preferably, an enterprise issues an NTF owned by an intelligent contract sale on a blockchain, the intelligent contract discloses an NFT and a sale price, the intelligent contract stores a virtual account of the enterprise, the intelligent contract has a contract account, the enterprise generates a transaction information uploading blockchain storage for transferring the corresponding NFT into the contract account, the enterprise wanting to purchase the NFT transfers a digital asset corresponding to the sale price into the contract account of the intelligent contract, the intelligent contract verifies the digital asset, generates a transaction information uploading blockchain storage for transferring the NFT into the virtual account of the purchasing enterprise, generates an enterprise virtual account for transferring the digital asset out of the NFT, and then executes self destruction.
Preferably, after the contract account receives the digital assets, whether the received digital assets are in accordance with the selling price is checked, if not, the digital assets are transferred back to the source virtual account, if so, transaction information of transferring the NFT into the virtual account of the purchasing enterprise is generated and uploaded to a block chain for storage, the virtual account of the enterprise for transferring the digital assets into the NFT is generated, whether the received digital assets still exist under the name of the contract account is checked, if so, the digital assets are transferred back to the source virtual account, and if not, the intelligent contract is destroyed.
Preferably, any enterprise that wants to purchase NFT issues a joint purchase intelligent contract on a blockchain, the joint purchase intelligent contract comprising a demand table and an expiration time, the demand table recording a number of purchase demands, the purchase demands comprising a purchase account address, a unit price and a desired purchase amount, the joint purchase intelligent contract having a purchase virtual account; before the deadline is reached, other enterprises which want to buy NFT fill a plurality of own purchase demands into a demand sheet, and transfer corresponding pre-paid digital assets to a purchase virtual account; when the deadline is reached, the combined purchase intelligent contract searches for the intelligent contracts for selling the NFT existing on the block chain, calculates the unit price of the carbon emission rights of the intelligent contracts for selling the NFT, and arranges the intelligent contracts for selling the NFT in ascending order of the unit price; the combined purchase intelligent contract arranges the purchase demands of each enterprise in the demand table according to unit price descending order, and the highest unit price in the purchase demands is used as the initial value of the marking unit price; generating a scribing unit price: counting a sum of expected purchase amounts equal to the total purchase demand of the ruling unit price as a total purchase amount, and counting a carbon emission right amount of the intelligent contract for selling the NFT equal to or less than the ruling unit price as a total sale amount; if the total purchase amount is less than the total sale amount, setting the marking unit price as the next unit price in the purchase demand sequence, and executing the step of generating the marking unit price again until the total purchase amount under the marking unit price is more than or equal to the total sale amount; the scribing unit price is returned to the previous unit price, the purchasing demands with the unit price equal to the scribing unit price in the demand table are read in combination with the purchasing intelligent contracts, a plurality of intelligent contracts selling NFT are read from the intelligent contract sorting selling NFT according to the time sequence submitted by the purchasing demands, and the difference between the sum of carbon emission limits of the intelligent contracts selling NFT and the expected purchasing quantity is minimized; using the pre-paid digital assets to purchase a plurality of matched intelligent contracts for selling NFT, and transferring corresponding certificates into purchase account addresses recorded by purchase demands; matching the purchase demand with the next unit price equal to the scribing unit price in the demand table, and if the carbon emission right quota in the intelligent contract sequencing for selling the NFT is larger than the expected purchase amount, ignoring the corresponding purchase demand; until the purchase demand with the unit price equal to the marking unit price in the demand table is matched, or the unit price in the intelligent contract sequencing for selling the NFT exceeds the marking unit price; the remaining portion of the prepaid digital asset paid by the business is returned to the corresponding virtual account of the business.
Preferably, before the joint intelligent contract for purchase reaches the cut-off time, the joint intelligent contract for purchase is accepted, the joint intelligent contract for purchase is limited to only accept the digital assets transferred by buying the virtual account, after the cut-off time is reached, the unpurchased joint intelligent contract for sale is transferred to the virtual account of the corresponding enterprise through the certificate, and destruction is executed.
Preferably, when the enterprise fills the purchase request into the demand form, the enterprise encrypts the purchase request by using a public key of the purchase virtual account, and before the deadline arrives, the joint purchase intelligent contract does not decrypt the purchase request.
Preferably, the carbon emission right amount of the NFT is derived from a preset denomination set, the leader structure issues a plurality of NFTs for the enterprise, and the sum of the carbon emission right amounts of the NFTs is equal to the amount of the initial carbon emission right of the enterprise.
The substantial effects of the invention are as follows: the carbon emission right is a unique carrier of the carbon emission right by the heterogeneous characteristic of NFT, so that the carbon emission right is effectively prevented from being counterfeited and confused, the authenticity of the carbon emission right transaction is ensured, and the carbon emission right transaction process can be conveniently traced and supervised by the traceability and transparency of the transaction process on the block chain; the short-term fluctuation of the carbon emission right market price is restrained by means of the combined purchase intelligent contract, so that the actual supply and demand relationship can be more accurately reflected by the market price, and the market regulation effect is enhanced.
Drawings
FIG. 1 is a schematic diagram of a carbon emission trading method according to an embodiment.
Fig. 2 is a schematic diagram of intelligent contract transferred carbon emissions in accordance with an embodiment.
Fig. 3 is a schematic diagram of an intelligent contract execution method according to an embodiment.
FIG. 4 is a diagram illustrating an embodiment of a method for trading carbon two emissions.
Wherein: 10. business, 11, purchasing business, 12, digital assets, 20, smart contracts, 21, transaction information, 30, blockchain.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
The first embodiment is as follows:
a method for trading carbon emission rights based on NFT, referring to fig. 1, comprising: step A01) the enterprise 10 registers with the governing body, uploads the production data, and obtains the initial carbon emission right distributed by the governing body; step A02) the master authority generates NFT, generates an issued transaction information uploading block chain 30 which transfers the NFT to the virtual account of the enterprise 10, wherein the issued transaction information comprises the NFT, a transferred virtual account, a timestamp, a carbon emission right amount and an issued signature, the issued signature is a signature of the private key of the master authority on an issued transaction hash value, and the issued transaction hash value is a hash value of the NFT, the transferred virtual account, the timestamp and the carbon emission right amount; step a 03) after enterprise 10 receives the purchase request of purchasing enterprise 11 and receives the funds, it generates transaction information 21 that will transfer the corresponding NFT to the virtual account of the purchasing enterprise on blockchain 30 and uploads the transaction information to blockchain 30 for storage; step A04), the governing organization sets a verification account on the blockchain 30, when the enterprise verifies and sells the carbon emission right to perform, the NFT with the carbon emission right amount sum conforming to the carbon emission amount determined by the governing organization is transferred to the verification account, and corresponding verification and selling transaction information 21 is generated and uploaded to the blockchain 30 for storage. The NFT is a string of unique characters on the blockchain 30, and is an abbreviation of Non-fungal Tokens, which means Non-interchangeable notations. NFTs have unique and indivisible properties. Compared with other general evidences, the minimum unit of the bit currency on the bit chain is smart, 1 smart =10^ -8BTC, namely, one bit currency can be divided into 10^8 parts at most. The rights and interests represented by one bitcoin and another bitcoin are identical. And the rights represented by the NFT are the assets bound to it. In the blockchain 30 ledger, NFT is under the name, and represents under the name of the asset bound to the NFT. Thus, when asset rights require transfer, proof of the transfer of the asset can be formed simply by generating a transaction on blockchain 30 that transfers the corresponding NFT. This has great advantages for ownership certification of virtual assets. Such as game items, digital paintings, etc., which are difficult to prove and verify in a traditional manner. By using NFT, the ownership can be conveniently verified, and a complete ownership change process can be traced. The carbon emission quota of NFT is taken from a preset denomination set, and the recommended preset denomination set is {1,100 }. The hosting structure issues a number of NFTs to the enterprise, the sum of the carbon emission limits of the number of NFTs being equal to the amount of the initial carbon emission of the enterprise. If the initial carbon emission quota allocated to the enterprise is 635 tons, 6 NFTs with the denomination of 100 and 35 NFTs with the denomination of 1 are generated for the enterprise. The preferred embodiment deals NFT only in a denomination of 100 and businesses that purchase carbon emissions also purchase multiples of the amount of 100. Another preferred embodiment is to trade NFT with a denomination of 100 and NFT with a denomination of 1 in two groups.
The control of carbon emission is an important measure for inhibiting greenhouse effect, if a paper-based carbon sink certificate is adopted, paper is consumed, the paper is easy to counterfeit and forge, and the anti-counterfeiting authentication cost is high. If an electronic management system is adopted, a centralized risk exists. Once the data of the electronic system is attacked or maliciously tampered, the management of carbon emission is also leaked. This embodiment combines the NFT and the electronization systems on the blockchain 30. The electronic system is responsible for confirming the initial distribution of the carbon emission rights of the enterprise and verifying whether the enterprise completes the carbon emission performance. NFT is responsible for resolving the flow of carbon emissions between enterprises and providing proof of authenticity of carbon emissions owned by enterprises. The NFT is adopted to track the transaction process of the carbon emission rights, so that loss, forgery, falsification and the like of the ownership certificate of the carbon emission rights can be avoided, and real and reliable carbon emission rights tracing is provided.
Referring to fig. 2, when an enterprise needs to transfer surplus carbon emission rights, an intelligent contract 20 is issued on a blockchain 30 to sell an owned NTF, the intelligent contract 20 discloses an NFT and a selling price, as shown in table 1, the intelligent contract 20 stores a virtual account of the enterprise, the intelligent contract 20 has a contract account, the enterprise generates and stores transaction information 21 for transferring a corresponding NFT into the contract account in an uploading blockchain 30, the enterprise wanting to purchase the NFT transfers digital assets 12 corresponding to the selling price into the contract account of the intelligent contract 20, after the intelligent contract 20 verifies the digital assets 12, the intelligent contract generates and transfers the NFT into the transaction information 21 for purchasing the virtual account of the enterprise to store in the uploading blockchain 30, generates and transfers the digital assets 12 into an enterprise virtual account for selling the NFT, and then performs self destruction. The destroyed smart contract 20 will no longer be called out and executed. But its information can still be queried on the blockchain 30, which can serve as a source. The data on the block chain 30 has the characteristic of being not tampered, so that the transfer process of the carbon emission right can be completely and really inquired, the reality and credibility of the management of the carbon emission right are ensured, and the management and control of the carbon emission are realized.
TABLE 1 Intelligent contract
| NFT | CHVCTLSMY3QQTYT447A5K2 |
| Selling price/ten thousand yuan | 20 |
The enterprise to be purchased can check the issued transaction information according to the NFT query blockchain 30, and the issued transaction information contains the signature of the governing authority, so that the authenticity of the NFT can be verified. The NFT transaction process, as well as the selling price of each transaction, can also be looked up on blockchain 30. The issued transaction information also includes carbon emission limits. The leader inquires the block chain 30, and can find out which enterprises sell the carbon emission right NFT reversely on the market, intervene and manage the enterprises on the condition of need, effectively maintain the regulation function of the market, and inhibit the speculative behavior on the market. The NFT issuance transaction information shown in table 1 shows transfer to virtual account 0xD0182E … 547C9B0 with a carbon emission credit of 100 tons.
The NFT transaction is performed by the smart contract according to the following steps, referring to fig. 3, including: step B01), after receiving the digital assets 12, the contract account of the intelligent contract checks whether the received digital assets 12 are consistent with the selling price, if not, the step B02) is executed to transfer the digital assets 12 back to the source virtual account, if so, the step B03) is executed to generate the transaction information 21 uploading blockchain 30 for transferring the NFT to the virtual account of the purchasing enterprise to be stored; step B04) generating an enterprise virtual account for transferring the digital asset 12 to sell NFT; step B05) checks whether the received digital assets 12 still exist under the contract account name, if so, the step B06) is executed to transfer the digital assets 12 back to the source virtual account, and then the step B07) is executed, if not, the step B07) is directly executed to execute destruction of the intelligent contract.
The beneficial technical effects of this embodiment are: the carbon emission rights are the only carrier of the carbon emission rights through the heterogeneous characteristics of NFT, the carbon emission rights are effectively prevented from being counterfeited and confused, the authenticity of the carbon emission rights transaction is guaranteed, and the carbon emission rights transaction process can be conveniently traced and supervised through the traceability and transparency of the transaction process on the block chain 30.
Example two:
a carbon emission right trading method based on NFT adopts the technical scheme of the first embodiment, so that the price of NFT in the market is easy to fluctuate dramatically. The amount of NFT issued per year is fixed by the annual accounting. In the early and middle of the year, enterprises use their own initial carbon emission rights, NFT price in the market is low, and low-price acquisition of enterprises is likely to occur. In the end of the year, more and more enterprises face the situation of insufficient carbon emission due to the increase of business scale, and need to purchase NFT representing the carbon emission from the market. Resulting in an increase in the price of NFT, the department will earn a profit for the business that purchased NFT at a lower price. In order to avoid the need for the enterprises to undertake the higher-price NFT, the enterprises can actively make a first-time purchase, and the buyers get the first-time purchase. The initial goal of the carbon emissions market was to limit high-emission businesses and encourage the expansion of businesses that are energy efficient, i.e., emit the same amount of carbon, but are able to produce more products. However, according to the technical scheme of the first embodiment, the market is not distributed according to the rule that the higher the energy efficiency of the enterprise is, the higher the carbon emission right is, but is distributed according to the trading enthusiasm. Leading to the discrepancy between market regulation and original purpose and loss of regulation. Meanwhile, the speculative behavior is easy to propagate. If the carbon emission is larger than the amount of issuance as a whole, it will result in the inevitable failure of the department enterprises to perform. To avoid being penalized, the enterprise will increase the NFT representing carbon emissions on the market for price-robbing, resulting in an abnormally high NFT price. Therefore, the embodiment provides a technical scheme of jointly purchasing an intelligent contract, so that an enterprise can know the bearing capacity of the enterprise on the rising of the carbon emission right price, and actively reduce the production scale or improve process equipment before actual carbon emission. The production idea of first producing and then actively purchasing low-price NFT is avoided.
Referring to fig. 3, the method includes: step C01) any enterprise that wants to purchase NFT issues a joint-purchase intelligent contract on blockchain 30, the joint-purchase intelligent contract includes a demand table and a deadline, the demand table records a plurality of purchase demands, the purchase demands include purchase account addresses, unit prices and expected purchase amounts, the joint-purchase intelligent contract has a purchase virtual account; step C02), before the deadline is reached, other enterprises which want to buy NFT fill a plurality of own purchase demands into a demand form and transfer the corresponding prepaid digital assets 12 to the purchase virtual account; step C03), when the deadline is reached, jointly purchasing the intelligent contracts for selling NFTs existing on the intelligent contract search block chain 30, calculating the unit price of the carbon emission right of the intelligent contracts for selling NFTs, and arranging the intelligent contracts for selling NFTs in ascending order of unit price, as shown in table 2.
Table 2 intelligent contracts present on blockchain 30 at cut-off time
| Serial number | NFT | Selling price | Calculated unit price, unit: ten thousand yuan/ton |
| 1 | 0xF86…C19 | 10 | 0.1 |
| … | … | … | … |
| 11 | 0xB12…869 | 10 | 0.1 |
| 12 | 0xE77…668 | 12 | 0.12 |
| … | … | … | … |
| 18 | 0x8F1…253 | 12 | 0.12 |
| 19 | 0x3FD…4C1 | 15 | 0.15 |
| … | … | … | … |
| 27 | 0xC1E…7A1 | 15 | 0.15 |
Step C04) combining the intelligent purchasing contracts to arrange the purchasing demands of each enterprise in the demand list according to unit price descending order, wherein the highest unit price in the purchasing demands is used as the initial value of the marking unit price; step C05) generates a scribing unit price: counting a sum of expected purchase amounts equal to the total purchase demand of the ruling unit price as a total purchase amount, and counting a carbon emission right amount of the intelligent contract for selling the NFT equal to or less than the ruling unit price as a total sale amount; step C06) if the total purchase quantity is less than the total sale quantity, setting the marking unit price as the next unit price in the purchase demand sequence, and executing the step C05) of generating the marking unit price again until the total purchase quantity is more than or equal to the total sale quantity under the marking unit price; step C07) the marking unit price is returned to the previous unit price, the purchasing demands with the unit price equal to the marking unit price in the demand table are read in combination with the purchasing intelligent contracts, a plurality of intelligent contracts selling NFT are read from the intelligent contract sorting selling NFT according to the time sequence submitted by the purchasing demands, and the difference between the sum of the carbon emission right amount of the intelligent contracts selling NFT and the expected purchasing amount is minimized.
TABLE 3 Purchase demand ordering
| Enterprise | Unit price, unit: ten thousand yuan/ton | Desired purchase amount, unit: ton of | Amount of money required |
| Enterprise A | 0.15 | 100 | 15 |
| Enterprise A | 0.12 | 600 | 72 |
| Enterprise A | 0.1 | 1200 | 120 |
| Enterprise B | 0.15 | 300 | 45 |
| Enterprise B | 0.12 | 700 | 84 |
| Enterprise B | 0.1 | 1400 | 140 |
| Enterprise C | 0.15 | 200 | 30 |
| Enterprise C | 0.12 | 200 | 24 |
| Enterprise C | 0.1 | 200 | 20 |
Step C08) using the pre-paid digital assets 12 to purchase a plurality of matched intelligent contracts for selling NFT, and transferring corresponding certificates into the purchase account address recorded by the purchase demand; step C09) matching the next purchase demand with the same unit price as the scribing unit price in the demand table, and if the carbon emission right amount in the intelligent contract sequencing for selling NFT is larger than the expected purchase amount, ignoring the corresponding purchase demand; step C10) until the purchase demand with the unit price equal to the marking unit price in the demand table is matched, or the unit price in the intelligent contract sequence for selling the NFT exceeds the marking unit price; step C11) returns the remainder of the prepaid digital asset 12 paid by the business to the corresponding virtual account of the business.
As shown in tables 2 and 3, when the unit price of the scribe line is 0.15 ten-thousand yuan/ton, the total sales amount is 2700 tons, the total purchase amount is 600 tons, and the total purchase amount is smaller than the total sales amount. Therefore, the marking unit price is reduced to the next one in the unit price sequence, namely the marking unit price is 0.12 ten thousand yuan/ton, the total sale amount is 1800 tons at the moment, the total purchase amount is 1500 tons, and the total purchase amount is less than the total sale amount. Therefore, the marking unit price is reduced to the next one in the unit price sequence, namely the marking unit price is 0.1 ten thousand yuan/ton, the total sale amount is 1100 tons at the moment, the total purchase amount is 2800 tons, and the total purchase amount is larger than the total sale amount. And finishing the inspection step, and obtaining the scribing unit price to be returned to the previous unit price, namely the final scribing unit price is 0.12 ten thousand yuan/ton. At this time, according to the time sequence submitted by the purchase demand, firstly matching the purchase demand of enterprise A with the unit price of 0.12 ten thousand yuan/ton with the intelligent contract, namely matching the intelligent contract with 6 carbon emission rights of 100 tons and the unit price of 0.1 ten thousand yuan/ton, so that the sum of the carbon emission rights of the intelligent contract is the smallest difference from the expected purchase amount and is exactly zero. This is because the present embodiment adopts the value of the carbon emission quota of NFT from the preset set. And the purchase demand submitted by the enterprise is also carried out according to integral multiples of the preset set, so that the method is the best execution mode. Enterprise a supports a total cost of 60 ten thousand dollars, regardless of the commission fees paid to the miners in blockchain 30. Then, an intelligent contract with 5 carbon emission rights of 100 tons and a unit price of 0.1 ten thousand yuan/ton and an intelligent contract with 2 carbon emission rights of 100 tons and a unit price of 0.12 ten thousand yuan/ton are matched for the enterprise B, and the total support cost of the enterprise B is 74 ten thousand yuan regardless of the commission charge required to be paid to miners in the block chain 30. Then, an intelligent contract with the carbon emission right of 100 tons and the unit price of 0.12 ten thousand yuan/ton is matched for the enterprise C, and the total support cost of the enterprise C is 24 ten thousand yuan regardless of the commission charge which needs to be paid to the miners in the block chain 30. The actual unit price of the carbon emission right purchased by the business B is 74 ten thousand yuan/700 ton =0.106 ten thousand yuan/ton, and the actual unit price of the carbon emission right purchased by the business C is 0.12 ten thousand yuan/ton.
In this embodiment, jointly purchasing smart contracts makes it difficult for a business to purchase all of the NFTs at a lower price through aggressive trading. The method can inhibit speculative behaviors in the market, guarantee the benefits of enterprises and promote the orderly implementation of carbon emission rights and agreements. In this embodiment, the enterprise a submits the purchase demand at the earliest time, which is the most active to participate in the market transaction, and the purchase desire of the enterprise a reaches 1200 tons when the unit price is 0.1 ten thousand yuan/ton. If the joint purchase intelligent contract scheme is not adopted, enterprise A buys the intelligent contracts on the market at the unit price of 0.1 ten thousand yuan/ton. Enterprise B then participates in the market trade and will buy an intelligent contract on the market with a price of 0.12 ten thousand dollars/ton. The unit price required to be charged by the enterprise C is up to 0.15 ten thousand yuan/ton. The reason that the carbon emission amount of the enterprise C is small and the enterprise C is insensitive to the carbon emission right price is that the income brought by the unit carbon emission amount is high enough, namely, the energy utilization efficiency is high, and the enterprise C is an enterprise type needing inclination in the energy conservation and emission reduction work. But due to the randomness of market trading, such enterprises are instead charged with the highest carbon emission costs. The enterprise a is very sensitive to the increase of the unit price of the carbon emission right, and the energy utilization efficiency is low. However, when the scheme of the embodiment is not adopted, the scheme purchases the most carbon emission rights at the lowest unit price. I.e. a failure of the market adjustment function occurs. The joint purchase intelligent contract provided by the embodiment can avoid the failure of the market regulation function to a certain extent. If all enterprises participate in market trading by jointly purchasing intelligent contracts, the effect of avoiding the failure of the market regulation function is most remarkable.
In order to attract more NFTs to sell on the blockchain 30, before the combined intelligent contract purchase reaches the cut-off time, the targeted sale contract is accepted, the targeted sale contract only receives the digital assets 12 transferred by buying the virtual account, and after the cut-off time is reached, the targeted sale contract which is not purchased transfers the evidence back to the virtual account of the corresponding enterprise, and destruction is executed. When the enterprise fills the purchase request into the demand form, the public key of the purchased virtual account is used for encryption, and before the deadline arrives, the purchase demand is not decrypted by jointly purchasing the intelligent contract.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (7)
1. A carbon emission right trading method based on NFT is characterized in that,
the method comprises the following steps:
the enterprise registers to a director, uploads production data and obtains an initial carbon emission right distributed by the director;
the method comprises the steps that a host organization generates NFT and generates an issuing transaction information uploading block chain which transfers the NFT to an enterprise virtual account, wherein the issuing transaction information comprises the NFT, a transfer-out virtual account, a transfer-in virtual account, a timestamp, a carbon emission right amount and an issuing signature, the issuing signature is a signature of a private key of the host organization on an issuing transaction hash value, and the issuing transaction hash value is a hash value of the NFT, the transfer-in virtual account, the timestamp and the carbon emission right amount;
after receiving purchase requests of other enterprises and funds, the enterprise generates transaction information which is transferred to a virtual account of the purchasing enterprise on the block chain corresponding to the NFT and uploads the transaction information to the block chain for storage;
and the host organization is provided with a verification account on the blockchain, when the enterprise verifies and sells the carbon emission right to perform, the NFT with the carbon emission right amount sum in accordance with the carbon emission amount determined by the host organization is transferred to the verification account, and corresponding verification and selling transaction information is generated and uploaded to the blockchain for storage.
2. The NFT-based carbon emissions trading method of claim 1, wherein,
an enterprise publishes NTF owned by intelligent contracts on a block chain, the intelligent contracts disclose NFT and selling price, the intelligent contracts store virtual accounts of the enterprise, the intelligent contracts have contract accounts, the enterprise generates transaction information uploading block chain storage for transferring the corresponding NFT to the contract accounts, the enterprise wanting to purchase the NFT transfers digital assets conforming to the selling price to the contract accounts of the intelligent contracts, after the intelligent contracts verify the digital assets, the intelligent contracts generate transaction information uploading block chain storage for transferring the NFT to the virtual accounts of the purchasing enterprise, the enterprise virtual accounts for transferring the digital assets to the sold NFT are generated, and then self destruction is executed.
3. The NFT-based carbon emissions trading method of claim 2, wherein,
after the contract account receives the digital assets, whether the received digital assets are in accordance with the selling price or not is checked, if not, the digital assets are transferred back to the source virtual account, if so, transaction information of a virtual account transferring the NFT to a purchasing enterprise is generated and uploaded to a block chain for storage, an enterprise virtual account transferring the digital assets to the NFT is generated, whether the received digital assets still exist under the name of the contract account is checked, if so, the digital assets are transferred back to the source virtual account, and if not, the intelligent contract is destroyed.
4. The NFT-based carbon emission trading method of claim 2 or 3, wherein,
any enterprise wishing to purchase NFT issues a joint purchase intelligent contract on a blockchain, the joint purchase intelligent contract comprising a demand table and an expiration time, the demand table recording a number of purchase demands, the purchase demands comprising a purchase account address, a unit price, and a desired purchase amount, the joint purchase intelligent contract having a purchase virtual account;
before the deadline is reached, other enterprises which want to buy NFT fill a plurality of own purchase demands into a demand sheet, and transfer corresponding pre-paid digital assets to a purchase virtual account;
when the deadline is reached, the combined purchase intelligent contract searches for the intelligent contracts for selling the NFT existing on the block chain, calculates the unit price of the carbon emission rights of the intelligent contracts for selling the NFT, and arranges the intelligent contracts for selling the NFT in ascending order of the unit price;
the combined purchase intelligent contract arranges the purchase demands of each enterprise in the demand table according to unit price descending order, and the highest unit price in the purchase demands is used as the initial value of the marking unit price;
generating a scribing unit price: counting a sum of expected purchase amounts equal to the total purchase demand of the ruling unit price as a total purchase amount, and counting a carbon emission right amount of the intelligent contract for selling the NFT equal to or less than the ruling unit price as a total sale amount;
if the total purchase amount is less than the total sale amount, setting the marking unit price as the next unit price in the purchase demand sequence, and executing the step of generating the marking unit price again until the total purchase amount under the marking unit price is more than or equal to the total sale amount;
the scribing unit price is returned to the previous unit price, the purchasing demands with the unit price equal to the scribing unit price in the demand table are read in combination with the purchasing intelligent contracts, a plurality of intelligent contracts selling NFT are read from the intelligent contract sorting selling NFT according to the time sequence submitted by the purchasing demands, and the difference between the sum of carbon emission limits of the intelligent contracts selling NFT and the expected purchasing quantity is minimized;
using the pre-paid digital assets to purchase a plurality of matched intelligent contracts for selling NFT, and transferring corresponding certificates into purchase account addresses recorded by purchase demands;
matching the purchase demand with the next unit price equal to the scribing unit price in the demand table, and if the carbon emission right quota in the intelligent contract sequencing for selling the NFT is larger than the expected purchase amount, ignoring the corresponding purchase demand;
until the purchase demand with the unit price equal to the marking unit price in the demand table is matched, or the unit price in the intelligent contract sequencing for selling the NFT exceeds the marking unit price;
the remaining portion of the prepaid digital asset paid by the business is returned to the corresponding virtual account of the business.
5. The NFT-based carbon emissions trading method of claim 4, wherein,
and receiving the oriented sale contract before the combined purchase intelligent contract reaches the cut-off time, wherein the oriented sale contract only limits to receive the digital assets transferred by the purchased virtual account, and after the cut-off time is reached, the oriented sale contract which is not purchased transfers the evidence back to the virtual account of the corresponding enterprise and executes destruction.
6. The NFT-based carbon emissions trading method of claim 4, wherein,
when the enterprise fills the purchase request into the demand form, the public key of the purchased virtual account is used for encryption, and before the deadline arrives, the joint purchase intelligent contract does not decrypt the purchase demand.
7. The NFT-based carbon emission trading method of any one of claims 1 to 3,
the carbon emission right amount of the NFT is valued from a preset denomination set, the leader structure issues a plurality of NFTs for the enterprise, and the sum of the carbon emission right amounts of the NFTs is equal to the amount of the initial carbon emission right of the enterprise.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114723500A (en) * | 2022-05-07 | 2022-07-08 | 北京天德科技有限公司 | Multi-chain system cooperation architecture for NFR digital transaction |
| CN116452334A (en) * | 2023-04-06 | 2023-07-18 | 北京金风零碳能源有限公司 | Multi-carbon transaction method and system for industrial park based on blockchain |
| WO2023250501A1 (en) * | 2022-06-24 | 2023-12-28 | 4652327 Corporation | Non-fungible token based sustainability credits and marketplace |
| KR102635992B1 (en) * | 2022-09-02 | 2024-02-13 | 윈클 주식회사 | A service platform that provides a marketplace for trading carbon credits, and system and method for providing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114723500A (en) * | 2022-05-07 | 2022-07-08 | 北京天德科技有限公司 | Multi-chain system cooperation architecture for NFR digital transaction |
| WO2023250501A1 (en) * | 2022-06-24 | 2023-12-28 | 4652327 Corporation | Non-fungible token based sustainability credits and marketplace |
| KR102635992B1 (en) * | 2022-09-02 | 2024-02-13 | 윈클 주식회사 | A service platform that provides a marketplace for trading carbon credits, and system and method for providing the same |
| CN116452334A (en) * | 2023-04-06 | 2023-07-18 | 北京金风零碳能源有限公司 | Multi-carbon transaction method and system for industrial park based on blockchain |
| CN116452334B (en) * | 2023-04-06 | 2024-05-14 | 北京金风零碳能源有限公司 | Multi-carbon transaction method and system for industrial park based on blockchain |
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