CN114266566A - Block chain-based carbon emission right trading method - Google Patents
Block chain-based carbon emission right trading method Download PDFInfo
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Abstract
The invention relates to the technical field of information, in particular to a block chain-based carbon emission right transaction method, which comprises the following steps: the enterprise obtains the initial carbon emission right distributed by a director, and the director issues a certificate; the enterprise generates a certificate, wherein the certificate is a certificate hash value; after the block chain link points verify the initial transaction information, the initial transaction information is received; issuing a sale intelligent contract, wherein the sale intelligent contract comprises a certificate, a sale price, a certificate number, a carbon emission right amount and a collection virtual account; and transferring the digital assets in accordance with the selling price to a contract virtual account, transferring the general certificate to a digital asset source virtual account by the selling intelligent contract, and transferring the digital assets to a collection virtual account. The substantial effects of the invention are as follows: through establishing the certificates corresponding to the certificates one to one on the block chain, the quick ownership verification and transaction tracing of the carbon emission right certificate are realized, and the inspection by a supervisor organization and the supervision of the enterprise performance by the public are facilitated; the short-term fluctuation of the carbon emission unit price is inhibited, and the market regulation effect is strengthened.
Description
Technical Field
The invention relates to the technical field of information, in particular to a block chain-based carbon emission right trading method.
Background
The industrial production activities of human beings since the last century emit a large amount of greenhouse gases such as carbon dioxide into the atmosphere, which leads to the aggravation of global greenhouse effect. The temperature rise brings a series of meteorological disasters and climate changes, and increasingly severe influences are generated on the survival development of human beings. In order to cope with the greenhouse effect which is still increasing, measures for reducing carbon emissions are being made in many countries and regions. Among them, the management of carbon emission rights has been gaining a lot of attention and research as one of the most widely used measures. Carbon emissions have become valuable assets that can be exchanged as commodities on the market. Enterprises with difficult emission reduction can purchase carbon emission rights to enterprises with easy emission reduction, and the enterprises with difficult emission reduction can complete emission reduction tasks and gain profits at the same time. Businesses with insufficient carbon emissions are required to incur additional costs and thus have the potential to scale down production or improve process equipment. At present, the way for enterprises to obtain the carbon emission rights is mainly the initial distribution of governing bodies and the acquisition of market trading. And allocating a certain initial carbon emission right by a competent organization according to the industry and production data of the enterprise. If the carbon emission reduction of the enterprises is insufficient, the carbon emission rights are acquired from other enterprises with surplus carbon emission rights through market trading. So can manage and control the total carbon emission of whole enterprises, help reducing greenhouse gas's whole emission. However, the carbon emission right is a virtual asset, and a transaction scheme which can not only carry out carbon emission right transaction conveniently, but also check the authenticity of the carbon emission right and trace the transaction is not available 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 transaction settlement of the carbon emission right, and the problems of authenticity verification of the carbon emission right and transaction tracing cannot be solved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: at present, the technical problems of the lack of a convenient carbon emission right authenticity verification and transaction tracing scheme are solved. The block chain-based carbon emission right transaction method is provided, and by means of the authenticity and traceability of the block chain, the rapid authenticity verification and transaction tracing of the carbon emission right transaction are realized.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a blockchain-based carbon emission right trading method, comprising: the method comprises the steps that an enterprise obtains an initial carbon emission right distributed by a governing body, and the governing body issues a certificate, wherein the certificate comprises a certificate number, a carbon emission right amount, a distribution timestamp and a certificate signature, the certificate signature is a signature of a private key of the governing body on a certificate hash value, and the certificate hash value is the certificate number, the carbon emission right amount and a hash value of an enterprise virtual account; an enterprise generates a certificate, wherein the certificate is a certificate hash value, initial transaction information which is used for transferring the certificate to a virtual account of the enterprise is generated and uploaded to a block chain, and the initial transaction information is attached with a certificate signature; the block chain nodes search whether the same certified transaction records exist on the block chain, if so, the initial transaction information is discarded, if not, the block chain nodes verify whether a certificate signature attached to the initial transaction information is consistent with a virtual account of an enterprise, and if so, the initial transaction information is accepted; the method comprises the steps that an enterprise publishes a sale intelligent contract on a block chain, wherein the sale intelligent contract comprises a certificate, a sale price, a certificate number, a carbon emission right amount and a collection virtual account, the sale intelligent contract is provided with a contract virtual account, and the enterprise transfers a certificate to be sold to the contract virtual account; the enterprise wanting to buy the certificate transfers the digital assets in accordance with the selling price to the contract virtual account, after the intelligent contract for selling receives the digital assets, the certificate is transferred to the digital assets source virtual account, and the digital assets are transferred to the collection virtual account.
Preferably, after the contract virtual account selling the intelligent contract 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, the general certificate is transferred to the digital asset source virtual account, the digital assets are transferred to the collection virtual account, whether the received digital assets exist under the name of the contract virtual 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 wishing to purchase a certificate issues a joint purchase intelligent contract on a blockchain, the joint purchase intelligent contract comprises a demand table and an expiration time, the demand table records a plurality of purchase demands, the purchase demands comprise purchase account addresses, unit prices and expected purchase amounts, and the joint purchase intelligent contract has a purchase virtual account; before the ending time is reached, other enterprises which want to purchase certificates fill a plurality of purchase demands into a demand sheet and transfer corresponding pre-paid digital assets to the purchase virtual account; when the deadline is reached, the joint purchasing intelligent contracts search for selling intelligent contracts existing on the block chain, calculate the unit price of carbon emission right for selling the intelligent contracts, and arrange the selling intelligent contracts according to the 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 sale intelligent contract 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 marking unit price is returned to the previous unit price, the purchase demands with the unit price equal to the marking unit price in the demand table are read in combination with the intelligent contract purchase, and a plurality of intelligent contracts are read from the selling intelligent contract sequence according to the time sequence submitted by the purchase demands, so that the difference between the sum of the carbon emission rights of the intelligent contracts and the expected purchase quantity is minimum; using the pre-paid digital assets to purchase a plurality of matched sale intelligent contracts and transferring corresponding proofs into purchase account addresses recorded by purchase demands; matching the purchase demand with the next unit price equal to the marking unit price in the demand table, and if the carbon emission weights in the ordering of the intelligent contracts for sale are all 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 sequence of selling the intelligent contracts 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 demand into the demand form, the enterprise encrypts the purchase demand 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 demand.
Preferably, if the purchase demand of the enterprise equal to the scribing unit price does not match the selling intelligent contract, the joint purchase intelligent contract reads the purchase demand corresponding to the unit price of the enterprise higher than the scribing unit price by one grade; matching the sales intelligent contracts for the purchase demand in the sales intelligent contract sequencing to minimize the difference between the sum of the carbon emission rights of a plurality of sales intelligent contracts and the expected purchase quantity; and (4) purchasing a plurality of matched sale intelligent contracts by using the pre-paid digital assets, and transferring corresponding certificates into the purchase account address recorded by the purchase demand.
Preferably, the carbon emission right amount of the certificate is taken from a preset denomination set, the executive structure issues a plurality of certificates for the enterprise, and the sum of the carbon emission right amounts of the plurality of certificates is equal to the initial carbon emission right amount of the enterprise.
The substantial effects of the invention are as follows: through establishing the certificates corresponding to the certificates one to one on the block chain, the quick ownership verification and transaction tracing of the carbon emission right certificate are realized, and the inspection by a supervisor organization and the supervision of the enterprise performance by the public are facilitated; through the joint purchase mechanism, the carbon emission right unit price short-term fluctuation inhibiting effect is achieved, the price can reflect the actual supply and demand relationship, the market adjusting effect is strengthened, and the failure of the market effect is avoided.
Drawings
Fig. 1 is a flow chart of a carbon emission right transaction method according to an embodiment.
FIG. 2 is a diagram illustrating a method for inspecting digital assets according to an embodiment.
FIG. 3 is a diagram of an embodiment federated purchase intelligence contract execution method.
FIG. 4 is a diagram of a method for supplementing a deal with a bigeminal purchasing intelligent contract, according to an embodiment.
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 block chain based carbon emission right trading method, referring to fig. 1, comprising: step a 01) the enterprise obtains the initial carbon emission rights distributed by the authority, and the authority issues the certificate, as shown in table 1, the certificate includes a certificate number, a carbon emission right amount, a distribution timestamp, and a certificate signature, the certificate signature is a signature of the authority private key on a certificate hash value, and the certificate hash value is a hash value of the certificate number, the carbon emission right amount, and the enterprise virtual account, in this embodiment: CHVCTLSMY3QQTYT447A5K2, the function SIGN () represents a signature function. In the block chain, a public key or a hash value of the public key is usually used as a virtual account, such as MD5(0xD0182E … 547C9B0), and in order to describe the relationship between the execution process and the related parameters, in this embodiment, the public key is directly used as the virtual account, and for example, 0xD0182E … 547C9B0 is a virtual account. Step A02), the enterprise generates a certificate, the certificate is a certificate hash value, initial transaction information which is transferred to the virtual account of the enterprise through the certificate is generated and uploaded to a block chain, and the initial transaction information is attached with a certificate signature. The initial transaction information is: (TOKEN) CHVCTLSMY3QQTYT447A5K2(FROM)0xD0182E … 547C9B0(TO)0xD0182E … 547C9B0(TIME)1637555974(QIANM) SIGN (hash). Wherein TOKEN represents the general evidence, i.e. the string CHVCTLSMY3QQTYT447A5K 2. The certificate number has uniqueness, and thus the certificate is also unique.
Table 1 certificates issued by the present embodiment
| Certificate numbering | 0xFA04FC0311 |
| Carbon emission weight per ton | 100 |
| Assigning timestamps | 1637552785 |
| Certificate signing | SIGN(CHVCTLSMY3QQTYT447A5K2) |
Step A03) searching whether the same certified transaction record exists on the block chain by the block chain link points, if so, discarding the initial transaction information, if not, checking whether the certificate signature attached to the initial transaction information is consistent with the virtual account of the enterprise, and if so, accepting the initial transaction information. After the block chain link point receives the initial transaction information, the transaction records of CHVCTLSMY3QQTYT447A5K2 are inquired on the block chain, and no corresponding record is found, which is represented as first submission. And then decrypting the certificate signature by using a public key of a competent organization, obtaining the certificate number, the carbon emission right and the hash value of the enterprise virtual account, requesting certificate information for the corresponding enterprise, verifying, judging that the certificate is real and transaction information corresponding to the certificate is not established on a block chain, receiving the initial transaction information, and packaging the initial transaction information into blocks for storage. When the certificate is inquired subsequently, the corresponding certificate is shown to be under the name of the enterprise virtual account, and the initial transaction information can be inquired. The initial transaction information can be verified by both subsequent enterprises and the public. The authenticity of the certificate is guaranteed.
Step A04) the enterprise issues a sale intelligent contract on the blockchain, the sale intelligent contract comprises a certificate, a sale price, a certificate number, a carbon emission right amount and a collection virtual account, the sale intelligent contract is provided with a contract virtual account, and the enterprise transfers the certificate to be sold into the contract virtual account.
TABLE 2 sale of intelligent contracts
| General purpose certificate | CHVCTLSMY3QQTYT447A5K2 |
| Selling price/ten thousand yuan | 20 |
| Certificate numbering | 0xFA04FC0311 |
| Carbon emission weight per ton | 100 |
| Virtual account for collection | 0xD0182E…547C9B0 |
Step A05) the enterprise wanting to buy the certificate transfers the digital assets in accordance with the selling price to the contract virtual account, after the intelligent contract receives the digital assets, the general certificate is transferred to the digital assets source virtual account, and the digital assets are transferred to the collection virtual account. There are many types of digital assets on the blockchain, no matter what type of digital asset is used, so long as its value matches the selling price.
Referring to fig. 2, a method for selling smart contracts to check digital assets includes: step B01), after the contract virtual account selling the intelligent contract receives the digital assets, checking whether the received digital assets are in accordance with the selling price, if not, transferring the digital assets to the source virtual account, if so, step B02) transferring the general evidence to the digital assets source virtual account, and transferring the digital assets to the collection virtual account; step B03) checking whether there are any more received digital assets under the contract virtual account name; step B04) if the digital assets exist, the digital assets are transferred back to the source virtual account, and if the digital assets do not exist, the intelligent contract executes destruction. In the embodiment, the condition that the transaction needs to be paid for the transaction on the blockchain is ignored, and the transaction fee is deducted from the received digital asset in actual implementation and then the digital asset is returned to the source virtual account. The purchase general certificate also needs to pay the commission fee, and the embodiment does not describe in detail, and the purchasing enterprise adjusts the paid digital assets according to the commission fee alone. The issuing and execution of intelligent contracts also usually requires payment of commission fees, and therefore issued sold intelligent contracts usually have a high willingness to fulfill deals. Not only does its price have authenticity, but due to the presence of commission fees, businesses selling vouchers are more inclined to set the selling price to what they deem appropriate, undermining the incentive for a virtual premium price. If the virtual premium price does not obtain a deal, the promissory commission of the intelligent contract is lost. Through circulation of the certificate, namely the ownership change representing the certificate, the current certificate is under the virtual account name of which enterprise, namely the certificate representing the carbon emission right is proved to be under the name of the enterprise. The transaction process is convenient to track, and the carbon emission performance of enterprises by administrative agencies and the public is also convenient.
The carbon emission weight of the certificate is taken from a preset denomination set, such as {1,100}, unit ton. The governing structure issues a number of certificates for the enterprise, the sum of the number of carbon emissions rights of the number of certificates being equal to the amount of initial carbon emissions rights for the enterprise. If the initial carbon emission weight is 320 tons, a certificate with a 3 carbon emission weight of 100 tons and a 20 carbon emission weight of 1 ton is issued. Therefore, the carbon emission rights are conveniently traded among enterprises. The carbon emission of the enterprise can be determined by the administrative agency every year, the enterprise needs to transfer corresponding certificates to the virtual account specified by the administrative agency during the verification and sale period, and the sum of the carbon emission rights of the certificates corresponding to the certificates is consistent with the carbon emission of the determined enterprise.
The beneficial technical effects of this embodiment are: through establishing the certificates corresponding to the certificates one to one on the block chain, the quick ownership verification and transaction tracing of the carbon emission right certificate are realized, the inspection by a supervisor organization and the supervision of the enterprise performance by the public are facilitated, and a quick, convenient, real, reliable and high-transparency transaction scheme is provided.
Example two:
the technical scheme of the embodiment I can bring the problem of severe fluctuation of unit price of the carbon emission right in actual transaction, easily bring loss or unexpected profits to enterprises, weaken the regulation effect of the market, and even breed speculative stir-frying behaviors on the market. Therefore, the embodiment provides a technical means for jointly purchasing the intelligent contract on the basis of the first embodiment in order to inhibit the short-term fluctuation of the carbon emission right unit price. Referring to fig. 3, the method includes: step C01) any enterprise wanting to purchase the certificate issues a joint purchase intelligent contract on the blockchain, the joint purchase intelligent contract comprises a demand table and a deadline, the demand table records a plurality of purchase demands, the purchase demands comprise purchase account addresses, unit prices and expected purchase amounts, and the joint purchase intelligent contract has a purchase virtual account; step C02), before the deadline is reached, other enterprises which want to buy certificates fill a plurality of own purchase demands into a demand form and transfer corresponding prepaid digital assets to the purchase virtual account; step C03), when the deadline is reached, jointly purchasing the sold intelligent contracts existing on the intelligent contract searching block chain, calculating the unit price of the carbon emission right of the sold intelligent contracts, and arranging the sold intelligent contracts according to the ascending order of the unit price;
TABLE 3 Smart contracts for sale present on Block chain at deadline
| Certificate numbering | Total carbon emission per unit price, unit: ton of | Calculated unit price, unit: ten thousand yuan/ton |
| 0xF86…C19|…|0xB12…869 | 1100 | 0.1 |
| 0xE77…668|…|0x8F1…253 | 700 | 0.12 |
| 0x3FD…4C1|…|0xC1E…7A1 | 900 | 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 sale intelligent contract 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 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;
TABLE 4 Purchase Requirements List
| 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 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 selling intelligent contracts are read from the selling intelligent contract sequence according to the time sequence submitted by the purchasing demands, and the difference between the sum of the carbon emission rights of the plurality of selling intelligent contracts and the expected purchasing quantity is minimum;
as shown in tables 3 and 4, 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. Thus, the inspection step is ended, and the scribing unit price is obtained to be returned to the previous unit price, that is, 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, the purchase demand of enterprise a with the unit price of 0.12 ten thousand yuan/ton is firstly matched with the intelligent sale contract, namely, the intelligent sale contract with the unit price of 0.1 ten thousand yuan/ton and the 6 carbon emission amount of 100 tons is matched, so that the sum of the carbon emission amount of the intelligent sale contract is the smallest difference with the expected purchase amount and is exactly zero. This is because the present embodiment employs the carbon emission right value of the certificate 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 charges that need to be paid to the blockchain nodes. Then, a sale intelligent contract with 5 carbon emission rights of 100 tons and a unit price of 0.1 ten thousand yuan/ton and a sale 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 procedure fee to be paid to the block chain node. Then, 2 intelligent contracts for selling with the carbon emission right of 100 tons and the unit price of 0.12 ten thousand yuan/ton are matched for the enterprise C, and the total support cost of the enterprise C is 24 ten thousand yuan regardless of the commission charge required to be paid to the block chain nodes. 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.
The joint purchase intelligent contract provided by the embodiment makes it difficult for enterprises to buy all low-price certificates through active transactions, and forces other enterprises to buy high-price certificates. 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 sold 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 for sale at a price of 0.12 ten thousand dollars/ton on the air market. The unit price required to be charged by the enterprise C is up to 0.15 ten thousand yuan/ton. The reason why the enterprise C has a small carbon emission amount and is not sensitive to the carbon emission right price is that the income per unit carbon emission amount is sufficiently high, i.e., the energy utilization efficiency is high. Is an enterprise type needing inclination in the energy-saving and emission-reducing 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 adjusting function is most remarkable.
Step C08) using the pre-paid digital assets to buy a plurality of matched sale intelligent contracts 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 marking unit price in the demand table, and if the carbon emission right in the ordering of the intelligent contract is larger than the expected purchase quantity, 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 selling intelligent contract sequence exceeds the marking unit price; step C11) returns the remainder of the prepaid digital asset paid by the business to the corresponding virtual account of the business. When the enterprise fills the purchase demand 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.
In order to attract more certificates to be sold on the blockchain, the targeted sale contract is accepted before the combined purchase intelligent contract reaches the cut-off time, the targeted sale contract limits that only the digital assets transferred by the purchased virtual account are received, after the cut-off time is reached, the targeted sale contract which is not purchased transfers the certificate back to the virtual account of the corresponding enterprise, and destruction is carried out.
For purchase demand for which a deal is not obtained, executing a supplementary deal step in conjunction with the purchase intelligent contract, including: step D01) if the purchase demand of the enterprise equal to the scribing unit price does not match the selling intelligent contract, the combined purchase intelligent contract reads the purchase demand corresponding to the unit price of the enterprise higher than the scribing unit price by one grade; step D02) matching the sales intelligence contracts for purchase demand in a sales intelligence contract ranking such that the sum of the carbon emission right amounts of a number of sales intelligence contracts differs minimally from the desired purchase amount; step D03) using the prepaid digital assets to purchase the matched plurality of sales intelligence contracts, and transferring the corresponding certificates into the purchase account address recorded by the purchase demand.
Through the joint purchase mechanism, the carbon emission right unit price short-term fluctuation inhibiting effect is achieved, the price can reflect the actual supply and demand relationship, the market adjusting effect is strengthened, and the failure of the market effect is avoided.
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 block chain-based carbon emission right trading method is characterized in that,
the method comprises the following steps:
the method comprises the steps that an enterprise obtains an initial carbon emission right distributed by a governing body, and the governing body issues a certificate, wherein the certificate comprises a certificate number, a carbon emission right amount, a distribution timestamp and a certificate signature, the certificate signature is a signature of a private key of the governing body on a certificate hash value, and the certificate hash value is the certificate number, the carbon emission right amount and a hash value of an enterprise virtual account;
an enterprise generates a certificate, wherein the certificate is a certificate hash value, initial transaction information which is used for transferring the certificate to a virtual account of the enterprise is generated and uploaded to a block chain, and the initial transaction information is attached with a certificate signature;
the block chain nodes search whether the same certified transaction records exist on the block chain, if so, the initial transaction information is discarded, if not, the block chain nodes verify whether a certificate signature attached to the initial transaction information is consistent with a virtual account of an enterprise, and if so, the initial transaction information is accepted;
the method comprises the steps that an enterprise publishes a sale intelligent contract on a block chain, wherein the sale intelligent contract comprises a certificate, a sale price, a certificate number, a carbon emission right amount and a collection virtual account, the sale intelligent contract is provided with a contract virtual account, and the enterprise transfers a certificate to be sold to the contract virtual account;
the enterprise wanting to buy the certificate transfers the digital assets in accordance with the selling price to the contract virtual account, after the intelligent contract for selling receives the digital assets, the certificate is transferred to the digital assets source virtual account, and the digital assets are transferred to the collection virtual account.
2. The block chain-based carbon emission right trading method according to claim 1,
after the contract virtual account for selling the intelligent contract receives the digital assets, checking whether the received digital assets are consistent with the selling price, if not, transferring the digital assets to the source virtual account, if so, transferring the general evidence to the digital asset source virtual account, transferring the digital assets to the collection virtual account, checking whether the received digital assets still exist under the name of the contract virtual account, if so, transferring the digital assets to the source virtual account, and if not, executing destruction on the intelligent contract.
3. The block chain-based carbon emission right trading method according to claim 1 or 2,
any enterprise wanting to purchase a certificate issues a joint purchase intelligent contract on a blockchain, wherein the joint purchase intelligent contract comprises a demand table and an expiration time, the demand table records a plurality of purchase demands, the purchase demands comprise purchase account addresses, unit prices and expected purchase amounts, and the joint purchase intelligent contract is provided with a purchase virtual account;
before the ending time is reached, other enterprises which want to purchase certificates fill a plurality of purchase demands into a demand sheet and transfer corresponding pre-paid digital assets to the purchase virtual account;
when the deadline is reached, the joint purchasing intelligent contracts search for selling intelligent contracts existing on the block chain, calculate the unit price of carbon emission right for selling the intelligent contracts, and arrange the selling intelligent contracts according to the 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 sale intelligent contract 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 marking unit price is returned to the previous unit price, the purchase demands with the unit price equal to the marking unit price in the demand table are read in combination with the intelligent contract purchase, and a plurality of intelligent contracts are read from the selling intelligent contract sequence according to the time sequence submitted by the purchase demands, so that the difference between the sum of the carbon emission rights of the intelligent contracts and the expected purchase quantity is minimum;
using the pre-paid digital assets to purchase a plurality of matched sale intelligent contracts and transferring corresponding proofs into purchase account addresses recorded by purchase demands;
matching the purchase demand with the next unit price equal to the marking unit price in the demand table, and if the carbon emission weights in the ordering of the intelligent contracts for sale are all 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 sequence of selling the intelligent contracts 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.
4. The block chain-based carbon emission right trading method according to claim 3,
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.
5. The block chain-based carbon emission right trading method according to claim 3,
when the enterprise fills the purchase demand 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.
6. The block chain-based carbon emission right trading method according to claim 3,
if the purchasing requirement of the enterprise equal to the marking unit price is not matched with the selling intelligent contract, reading the purchasing requirement corresponding to the unit price of the enterprise higher than the first grade of the marking unit price by the combined purchasing intelligent contract;
matching the sales intelligent contracts for the purchase demand in the sales intelligent contract sequencing to minimize the difference between the sum of the carbon emission rights of a plurality of sales intelligent contracts and the expected purchase quantity;
and (4) purchasing a plurality of matched sale intelligent contracts by using the pre-paid digital assets, and transferring corresponding certificates into the purchase account address recorded by the purchase demand.
7. The block chain-based carbon emission right trading method according to claim 1 or 2,
the carbon emission right amount of the certificate is taken from a preset denomination set, the supervisor structure issues a plurality of certificates for the enterprise, and the sum of the carbon emission right amounts of the plurality of certificates is equal to the initial carbon emission right amount of the enterprise.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116385164A (en) * | 2023-04-06 | 2023-07-04 | 沈阳工业大学 | Block chain-based carbon asset transaction system and method |
| CN116664140A (en) * | 2023-08-02 | 2023-08-29 | 华北电力大学 | Carbon emission right trading method based on blockchain |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116385164A (en) * | 2023-04-06 | 2023-07-04 | 沈阳工业大学 | Block chain-based carbon asset transaction system and method |
| CN116385164B (en) * | 2023-04-06 | 2024-02-06 | 沈阳工业大学 | Block chain-based carbon asset transaction system and method |
| CN116664140A (en) * | 2023-08-02 | 2023-08-29 | 华北电力大学 | Carbon emission right trading method based on blockchain |
| CN116664140B (en) * | 2023-08-02 | 2023-09-29 | 华北电力大学 | Carbon emission right trading method based on blockchain |
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